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aa6bb135 | 1 | /* |
fecb3aae | 2 | * Copyright 2001-2022 The OpenSSL Project Authors. All Rights Reserved. |
deb2c1a1 | 3 | * |
4a8b0c55 | 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
aa6bb135 RS |
5 | * this file except in compliance with the License. You can obtain a copy |
6 | * in the file LICENSE in the source distribution or at | |
7 | * https://www.openssl.org/source/license.html | |
deb2c1a1 DSH |
8 | */ |
9 | ||
c72fa255 | 10 | /* |
1567a821 | 11 | * This file uses the low-level AES functions (which are deprecated for |
c72fa255 MC |
12 | * non-internal use) in order to implement the EVP AES ciphers. |
13 | */ | |
14 | #include "internal/deprecated.h" | |
15 | ||
743694a6 MC |
16 | #include <string.h> |
17 | #include <assert.h> | |
8c84b677 | 18 | #include <openssl/opensslconf.h> |
5158c763 MC |
19 | #include <openssl/crypto.h> |
20 | #include <openssl/evp.h> | |
21 | #include <openssl/err.h> | |
5158c763 | 22 | #include <openssl/aes.h> |
743694a6 MC |
23 | #include <openssl/rand.h> |
24 | #include <openssl/cmac.h> | |
25f2138b | 25 | #include "crypto/evp.h" |
39147079 | 26 | #include "internal/cryptlib.h" |
25f2138b DMSP |
27 | #include "crypto/modes.h" |
28 | #include "crypto/siv.h" | |
cc731bc3 | 29 | #include "crypto/aes_platform.h" |
706457b7 | 30 | #include "evp_local.h" |
0f113f3e MC |
31 | |
32 | typedef struct { | |
33 | union { | |
39147079 | 34 | OSSL_UNION_ALIGN; |
0f113f3e MC |
35 | AES_KEY ks; |
36 | } ks; | |
37 | block128_f block; | |
38 | union { | |
39 | cbc128_f cbc; | |
40 | ctr128_f ctr; | |
41 | } stream; | |
42 | } EVP_AES_KEY; | |
43 | ||
44 | typedef struct { | |
45 | union { | |
39147079 | 46 | OSSL_UNION_ALIGN; |
0f113f3e MC |
47 | AES_KEY ks; |
48 | } ks; /* AES key schedule to use */ | |
49 | int key_set; /* Set if key initialised */ | |
50 | int iv_set; /* Set if an iv is set */ | |
51 | GCM128_CONTEXT gcm; | |
52 | unsigned char *iv; /* Temporary IV store */ | |
53 | int ivlen; /* IV length */ | |
54 | int taglen; | |
55 | int iv_gen; /* It is OK to generate IVs */ | |
bcf082d1 | 56 | int iv_gen_rand; /* No IV was specified, so generate a rand IV */ |
0f113f3e | 57 | int tls_aad_len; /* TLS AAD length */ |
d6b34570 | 58 | uint64_t tls_enc_records; /* Number of TLS records encrypted */ |
0f113f3e MC |
59 | ctr128_f ctr; |
60 | } EVP_AES_GCM_CTX; | |
61 | ||
62 | typedef struct { | |
63 | union { | |
39147079 | 64 | OSSL_UNION_ALIGN; |
0f113f3e MC |
65 | AES_KEY ks; |
66 | } ks1, ks2; /* AES key schedules to use */ | |
67 | XTS128_CONTEXT xts; | |
68 | void (*stream) (const unsigned char *in, | |
69 | unsigned char *out, size_t length, | |
70 | const AES_KEY *key1, const AES_KEY *key2, | |
71 | const unsigned char iv[16]); | |
72 | } EVP_AES_XTS_CTX; | |
73 | ||
f844f9eb | 74 | #ifdef FIPS_MODULE |
2c840201 P |
75 | static const int allow_insecure_decrypt = 0; |
76 | #else | |
77 | static const int allow_insecure_decrypt = 1; | |
78 | #endif | |
79 | ||
0f113f3e MC |
80 | typedef struct { |
81 | union { | |
39147079 | 82 | OSSL_UNION_ALIGN; |
0f113f3e MC |
83 | AES_KEY ks; |
84 | } ks; /* AES key schedule to use */ | |
85 | int key_set; /* Set if key initialised */ | |
86 | int iv_set; /* Set if an iv is set */ | |
87 | int tag_set; /* Set if tag is valid */ | |
88 | int len_set; /* Set if message length set */ | |
89 | int L, M; /* L and M parameters from RFC3610 */ | |
e75c5a79 | 90 | int tls_aad_len; /* TLS AAD length */ |
0f113f3e MC |
91 | CCM128_CONTEXT ccm; |
92 | ccm128_f str; | |
93 | } EVP_AES_CCM_CTX; | |
94 | ||
5158c763 | 95 | #ifndef OPENSSL_NO_OCB |
0f113f3e | 96 | typedef struct { |
bdc985b1 | 97 | union { |
39147079 | 98 | OSSL_UNION_ALIGN; |
bdc985b1 AP |
99 | AES_KEY ks; |
100 | } ksenc; /* AES key schedule to use for encryption */ | |
101 | union { | |
39147079 | 102 | OSSL_UNION_ALIGN; |
bdc985b1 AP |
103 | AES_KEY ks; |
104 | } ksdec; /* AES key schedule to use for decryption */ | |
0f113f3e MC |
105 | int key_set; /* Set if key initialised */ |
106 | int iv_set; /* Set if an iv is set */ | |
107 | OCB128_CONTEXT ocb; | |
108 | unsigned char *iv; /* Temporary IV store */ | |
109 | unsigned char tag[16]; | |
110 | unsigned char data_buf[16]; /* Store partial data blocks */ | |
111 | unsigned char aad_buf[16]; /* Store partial AAD blocks */ | |
112 | int data_buf_len; | |
113 | int aad_buf_len; | |
114 | int ivlen; /* IV length */ | |
115 | int taglen; | |
116 | } EVP_AES_OCB_CTX; | |
5158c763 | 117 | #endif |
e6b336ef | 118 | |
5158c763 | 119 | #define MAXBITCHUNK ((size_t)1<<(sizeof(size_t)*8-4)) |
17f121de | 120 | |
03a5e5ae PS |
121 | /* increment counter (64-bit int) by 1 */ |
122 | static void ctr64_inc(unsigned char *counter) | |
123 | { | |
124 | int n = 8; | |
125 | unsigned char c; | |
126 | ||
127 | do { | |
128 | --n; | |
129 | c = counter[n]; | |
130 | ++c; | |
131 | counter[n] = c; | |
132 | if (c) | |
133 | return; | |
134 | } while (n); | |
135 | } | |
136 | ||
459b15d4 | 137 | #if defined(AESNI_CAPABLE) |
5158c763 | 138 | # if defined(__x86_64) || defined(__x86_64__) || defined(_M_AMD64) || defined(_M_X64) |
5158c763 | 139 | # define AES_GCM_ASM2(gctx) (gctx->gcm.block==(block128_f)aesni_encrypt && \ |
0f113f3e | 140 | gctx->gcm.ghash==gcm_ghash_avx) |
5158c763 MC |
141 | # undef AES_GCM_ASM2 /* minor size optimization */ |
142 | # endif | |
4e049c52 | 143 | |
17f121de | 144 | static int aesni_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, |
0f113f3e MC |
145 | const unsigned char *iv, int enc) |
146 | { | |
147 | int ret, mode; | |
6435f0f6 | 148 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); |
80ce874a | 149 | const int keylen = EVP_CIPHER_CTX_get_key_length(ctx) * 8; |
0f113f3e | 150 | |
80ce874a P |
151 | if (keylen <= 0) { |
152 | ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY_LENGTH); | |
153 | return 0; | |
154 | } | |
ed576acd | 155 | mode = EVP_CIPHER_CTX_get_mode(ctx); |
0f113f3e MC |
156 | if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE) |
157 | && !enc) { | |
80ce874a | 158 | ret = aesni_set_decrypt_key(key, keylen, &dat->ks.ks); |
0f113f3e MC |
159 | dat->block = (block128_f) aesni_decrypt; |
160 | dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? | |
161 | (cbc128_f) aesni_cbc_encrypt : NULL; | |
162 | } else { | |
80ce874a | 163 | ret = aesni_set_encrypt_key(key, keylen, &dat->ks.ks); |
0f113f3e MC |
164 | dat->block = (block128_f) aesni_encrypt; |
165 | if (mode == EVP_CIPH_CBC_MODE) | |
166 | dat->stream.cbc = (cbc128_f) aesni_cbc_encrypt; | |
167 | else if (mode == EVP_CIPH_CTR_MODE) | |
168 | dat->stream.ctr = (ctr128_f) aesni_ctr32_encrypt_blocks; | |
169 | else | |
170 | dat->stream.cbc = NULL; | |
171 | } | |
172 | ||
173 | if (ret < 0) { | |
9311d0c4 | 174 | ERR_raise(ERR_LIB_EVP, EVP_R_AES_KEY_SETUP_FAILED); |
0f113f3e MC |
175 | return 0; |
176 | } | |
177 | ||
178 | return 1; | |
179 | } | |
180 | ||
181 | static int aesni_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
182 | const unsigned char *in, size_t len) | |
d1fff483 | 183 | { |
6435f0f6 | 184 | aesni_cbc_encrypt(in, out, len, &EVP_C_DATA(EVP_AES_KEY,ctx)->ks.ks, |
ed576acd | 185 | ctx->iv, EVP_CIPHER_CTX_is_encrypting(ctx)); |
d1fff483 | 186 | |
0f113f3e | 187 | return 1; |
d1fff483 AP |
188 | } |
189 | ||
0f113f3e MC |
190 | static int aesni_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
191 | const unsigned char *in, size_t len) | |
d1fff483 | 192 | { |
ed576acd | 193 | size_t bl = EVP_CIPHER_CTX_get_block_size(ctx); |
d1fff483 | 194 | |
0f113f3e MC |
195 | if (len < bl) |
196 | return 1; | |
d1fff483 | 197 | |
6435f0f6 | 198 | aesni_ecb_encrypt(in, out, len, &EVP_C_DATA(EVP_AES_KEY,ctx)->ks.ks, |
ed576acd | 199 | EVP_CIPHER_CTX_is_encrypting(ctx)); |
d1fff483 | 200 | |
0f113f3e | 201 | return 1; |
d1fff483 AP |
202 | } |
203 | ||
5158c763 | 204 | # define aesni_ofb_cipher aes_ofb_cipher |
0f113f3e MC |
205 | static int aesni_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
206 | const unsigned char *in, size_t len); | |
d1fff483 | 207 | |
5158c763 | 208 | # define aesni_cfb_cipher aes_cfb_cipher |
0f113f3e MC |
209 | static int aesni_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
210 | const unsigned char *in, size_t len); | |
d1fff483 | 211 | |
5158c763 | 212 | # define aesni_cfb8_cipher aes_cfb8_cipher |
0f113f3e MC |
213 | static int aesni_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
214 | const unsigned char *in, size_t len); | |
d1fff483 | 215 | |
5158c763 | 216 | # define aesni_cfb1_cipher aes_cfb1_cipher |
0f113f3e MC |
217 | static int aesni_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
218 | const unsigned char *in, size_t len); | |
d1fff483 | 219 | |
5158c763 | 220 | # define aesni_ctr_cipher aes_ctr_cipher |
17f121de | 221 | static int aesni_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 222 | const unsigned char *in, size_t len); |
d1fff483 | 223 | |
17f121de | 224 | static int aesni_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, |
0f113f3e MC |
225 | const unsigned char *iv, int enc) |
226 | { | |
80ce874a P |
227 | EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX, ctx); |
228 | ||
229 | if (iv == NULL && key == NULL) | |
0f113f3e | 230 | return 1; |
80ce874a | 231 | |
0f113f3e | 232 | if (key) { |
80ce874a P |
233 | const int keylen = EVP_CIPHER_CTX_get_key_length(ctx) * 8; |
234 | ||
235 | if (keylen <= 0) { | |
236 | ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY_LENGTH); | |
237 | return 0; | |
238 | } | |
239 | aesni_set_encrypt_key(key, keylen, &gctx->ks.ks); | |
0f113f3e MC |
240 | CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f) aesni_encrypt); |
241 | gctx->ctr = (ctr128_f) aesni_ctr32_encrypt_blocks; | |
242 | /* | |
243 | * If we have an iv can set it directly, otherwise use saved IV. | |
244 | */ | |
245 | if (iv == NULL && gctx->iv_set) | |
246 | iv = gctx->iv; | |
247 | if (iv) { | |
248 | CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); | |
249 | gctx->iv_set = 1; | |
250 | } | |
251 | gctx->key_set = 1; | |
252 | } else { | |
253 | /* If key set use IV, otherwise copy */ | |
254 | if (gctx->key_set) | |
255 | CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); | |
256 | else | |
257 | memcpy(gctx->iv, iv, gctx->ivlen); | |
258 | gctx->iv_set = 1; | |
259 | gctx->iv_gen = 0; | |
260 | } | |
261 | return 1; | |
262 | } | |
263 | ||
5158c763 | 264 | # define aesni_gcm_cipher aes_gcm_cipher |
17f121de | 265 | static int aesni_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 266 | const unsigned char *in, size_t len); |
17f121de AP |
267 | |
268 | static int aesni_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
269 | const unsigned char *iv, int enc) |
270 | { | |
6435f0f6 | 271 | EVP_AES_XTS_CTX *xctx = EVP_C_DATA(EVP_AES_XTS_CTX,ctx); |
2c840201 | 272 | |
80ce874a | 273 | if (iv == NULL && key == NULL) |
0f113f3e MC |
274 | return 1; |
275 | ||
276 | if (key) { | |
3538b0f7 | 277 | /* The key is two half length keys in reality */ |
80ce874a P |
278 | const int keylen = EVP_CIPHER_CTX_get_key_length(ctx); |
279 | const int bytes = keylen / 2; | |
3538b0f7 P |
280 | const int bits = bytes * 8; |
281 | ||
80ce874a P |
282 | if (keylen <= 0) { |
283 | ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY_LENGTH); | |
284 | return 0; | |
285 | } | |
3538b0f7 P |
286 | /* |
287 | * Verify that the two keys are different. | |
4bd8b240 | 288 | * |
3538b0f7 P |
289 | * This addresses Rogaway's vulnerability. |
290 | * See comment in aes_xts_init_key() below. | |
291 | */ | |
2c840201 P |
292 | if ((!allow_insecure_decrypt || enc) |
293 | && CRYPTO_memcmp(key, key + bytes, bytes) == 0) { | |
9311d0c4 | 294 | ERR_raise(ERR_LIB_EVP, EVP_R_XTS_DUPLICATED_KEYS); |
3538b0f7 P |
295 | return 0; |
296 | } | |
297 | ||
0f113f3e MC |
298 | /* key_len is two AES keys */ |
299 | if (enc) { | |
3538b0f7 | 300 | aesni_set_encrypt_key(key, bits, &xctx->ks1.ks); |
0f113f3e MC |
301 | xctx->xts.block1 = (block128_f) aesni_encrypt; |
302 | xctx->stream = aesni_xts_encrypt; | |
303 | } else { | |
3538b0f7 | 304 | aesni_set_decrypt_key(key, bits, &xctx->ks1.ks); |
0f113f3e MC |
305 | xctx->xts.block1 = (block128_f) aesni_decrypt; |
306 | xctx->stream = aesni_xts_decrypt; | |
307 | } | |
308 | ||
3538b0f7 | 309 | aesni_set_encrypt_key(key + bytes, bits, &xctx->ks2.ks); |
0f113f3e MC |
310 | xctx->xts.block2 = (block128_f) aesni_encrypt; |
311 | ||
312 | xctx->xts.key1 = &xctx->ks1; | |
313 | } | |
314 | ||
315 | if (iv) { | |
316 | xctx->xts.key2 = &xctx->ks2; | |
9197c226 | 317 | memcpy(ctx->iv, iv, 16); |
0f113f3e MC |
318 | } |
319 | ||
320 | return 1; | |
321 | } | |
322 | ||
5158c763 | 323 | # define aesni_xts_cipher aes_xts_cipher |
17f121de | 324 | static int aesni_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 325 | const unsigned char *in, size_t len); |
17f121de AP |
326 | |
327 | static int aesni_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
328 | const unsigned char *iv, int enc) |
329 | { | |
6435f0f6 | 330 | EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,ctx); |
80ce874a P |
331 | |
332 | if (iv == NULL && key == NULL) | |
0f113f3e | 333 | return 1; |
80ce874a P |
334 | |
335 | if (key != NULL) { | |
336 | const int keylen = EVP_CIPHER_CTX_get_key_length(ctx) * 8; | |
337 | ||
338 | if (keylen <= 0) { | |
339 | ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY_LENGTH); | |
340 | return 0; | |
341 | } | |
342 | aesni_set_encrypt_key(key, keylen, &cctx->ks.ks); | |
0f113f3e MC |
343 | CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, |
344 | &cctx->ks, (block128_f) aesni_encrypt); | |
345 | cctx->str = enc ? (ccm128_f) aesni_ccm64_encrypt_blocks : | |
346 | (ccm128_f) aesni_ccm64_decrypt_blocks; | |
347 | cctx->key_set = 1; | |
348 | } | |
349 | if (iv) { | |
9197c226 | 350 | memcpy(ctx->iv, iv, 15 - cctx->L); |
0f113f3e MC |
351 | cctx->iv_set = 1; |
352 | } | |
353 | return 1; | |
354 | } | |
355 | ||
5158c763 | 356 | # define aesni_ccm_cipher aes_ccm_cipher |
17f121de | 357 | static int aesni_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 358 | const unsigned char *in, size_t len); |
17f121de | 359 | |
5158c763 | 360 | # ifndef OPENSSL_NO_OCB |
e6b336ef | 361 | static int aesni_ocb_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, |
0f113f3e MC |
362 | const unsigned char *iv, int enc) |
363 | { | |
6435f0f6 | 364 | EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,ctx); |
80ce874a P |
365 | |
366 | if (iv == NULL && key == NULL) | |
0f113f3e | 367 | return 1; |
80ce874a P |
368 | |
369 | if (key != NULL) { | |
370 | const int keylen = EVP_CIPHER_CTX_get_key_length(ctx) * 8; | |
371 | ||
372 | if (keylen <= 0) { | |
373 | ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY_LENGTH); | |
374 | return 0; | |
375 | } | |
0f113f3e MC |
376 | do { |
377 | /* | |
378 | * We set both the encrypt and decrypt key here because decrypt | |
379 | * needs both. We could possibly optimise to remove setting the | |
380 | * decrypt for an encryption operation. | |
381 | */ | |
80ce874a P |
382 | aesni_set_encrypt_key(key, keylen, &octx->ksenc.ks); |
383 | aesni_set_decrypt_key(key, keylen, &octx->ksdec.ks); | |
bdc985b1 AP |
384 | if (!CRYPTO_ocb128_init(&octx->ocb, |
385 | &octx->ksenc.ks, &octx->ksdec.ks, | |
0f113f3e | 386 | (block128_f) aesni_encrypt, |
bd30091c AP |
387 | (block128_f) aesni_decrypt, |
388 | enc ? aesni_ocb_encrypt | |
389 | : aesni_ocb_decrypt)) | |
0f113f3e MC |
390 | return 0; |
391 | } | |
392 | while (0); | |
393 | ||
394 | /* | |
395 | * If we have an iv we can set it directly, otherwise use saved IV. | |
396 | */ | |
397 | if (iv == NULL && octx->iv_set) | |
398 | iv = octx->iv; | |
399 | if (iv) { | |
400 | if (CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen) | |
401 | != 1) | |
402 | return 0; | |
403 | octx->iv_set = 1; | |
404 | } | |
405 | octx->key_set = 1; | |
406 | } else { | |
407 | /* If key set use IV, otherwise copy */ | |
408 | if (octx->key_set) | |
409 | CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen); | |
410 | else | |
411 | memcpy(octx->iv, iv, octx->ivlen); | |
412 | octx->iv_set = 1; | |
413 | } | |
414 | return 1; | |
415 | } | |
416 | ||
5158c763 | 417 | # define aesni_ocb_cipher aes_ocb_cipher |
e6b336ef | 418 | static int aesni_ocb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 419 | const unsigned char *in, size_t len); |
5158c763 | 420 | # endif /* OPENSSL_NO_OCB */ |
e6b336ef | 421 | |
5158c763 | 422 | # define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \ |
17f121de | 423 | static const EVP_CIPHER aesni_##keylen##_##mode = { \ |
0f113f3e MC |
424 | nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \ |
425 | flags|EVP_CIPH_##MODE##_MODE, \ | |
f6c95e46 | 426 | EVP_ORIG_GLOBAL, \ |
0f113f3e MC |
427 | aesni_init_key, \ |
428 | aesni_##mode##_cipher, \ | |
429 | NULL, \ | |
430 | sizeof(EVP_AES_KEY), \ | |
431 | NULL,NULL,NULL,NULL }; \ | |
17f121de | 432 | static const EVP_CIPHER aes_##keylen##_##mode = { \ |
0f113f3e | 433 | nid##_##keylen##_##nmode,blocksize, \ |
f6c95e46 | 434 | keylen/8,ivlen, \ |
0f113f3e | 435 | flags|EVP_CIPH_##MODE##_MODE, \ |
f6c95e46 | 436 | EVP_ORIG_GLOBAL, \ |
0f113f3e MC |
437 | aes_init_key, \ |
438 | aes_##mode##_cipher, \ | |
439 | NULL, \ | |
440 | sizeof(EVP_AES_KEY), \ | |
441 | NULL,NULL,NULL,NULL }; \ | |
17f121de | 442 | const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ |
8ca28da0 | 443 | { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; } |
17f121de | 444 | |
5158c763 | 445 | # define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \ |
17f121de | 446 | static const EVP_CIPHER aesni_##keylen##_##mode = { \ |
0f113f3e | 447 | nid##_##keylen##_##mode,blocksize, \ |
b1ceb439 TS |
448 | (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE||EVP_CIPH_##MODE##_MODE==EVP_CIPH_SIV_MODE?2:1)*keylen/8, \ |
449 | ivlen, \ | |
0f113f3e | 450 | flags|EVP_CIPH_##MODE##_MODE, \ |
f6c95e46 | 451 | EVP_ORIG_GLOBAL, \ |
0f113f3e MC |
452 | aesni_##mode##_init_key, \ |
453 | aesni_##mode##_cipher, \ | |
454 | aes_##mode##_cleanup, \ | |
455 | sizeof(EVP_AES_##MODE##_CTX), \ | |
456 | NULL,NULL,aes_##mode##_ctrl,NULL }; \ | |
17f121de | 457 | static const EVP_CIPHER aes_##keylen##_##mode = { \ |
0f113f3e | 458 | nid##_##keylen##_##mode,blocksize, \ |
b1ceb439 TS |
459 | (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE||EVP_CIPH_##MODE##_MODE==EVP_CIPH_SIV_MODE?2:1)*keylen/8, \ |
460 | ivlen, \ | |
0f113f3e | 461 | flags|EVP_CIPH_##MODE##_MODE, \ |
f6c95e46 | 462 | EVP_ORIG_GLOBAL, \ |
0f113f3e MC |
463 | aes_##mode##_init_key, \ |
464 | aes_##mode##_cipher, \ | |
465 | aes_##mode##_cleanup, \ | |
466 | sizeof(EVP_AES_##MODE##_CTX), \ | |
467 | NULL,NULL,aes_##mode##_ctrl,NULL }; \ | |
17f121de | 468 | const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ |
8ca28da0 | 469 | { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; } |
d1fff483 | 470 | |
459b15d4 | 471 | #elif defined(SPARC_AES_CAPABLE) |
c5f6da54 AP |
472 | |
473 | static int aes_t4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
474 | const unsigned char *iv, int enc) |
475 | { | |
476 | int ret, mode, bits; | |
6435f0f6 | 477 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); |
0f113f3e | 478 | |
ed576acd TM |
479 | mode = EVP_CIPHER_CTX_get_mode(ctx); |
480 | bits = EVP_CIPHER_CTX_get_key_length(ctx) * 8; | |
80ce874a P |
481 | if (bits <= 0) { |
482 | ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY_LENGTH); | |
483 | return 0; | |
484 | } | |
0f113f3e MC |
485 | if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE) |
486 | && !enc) { | |
487 | ret = 0; | |
6435f0f6 | 488 | aes_t4_set_decrypt_key(key, bits, &dat->ks.ks); |
0f113f3e MC |
489 | dat->block = (block128_f) aes_t4_decrypt; |
490 | switch (bits) { | |
491 | case 128: | |
492 | dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? | |
493 | (cbc128_f) aes128_t4_cbc_decrypt : NULL; | |
494 | break; | |
495 | case 192: | |
496 | dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? | |
497 | (cbc128_f) aes192_t4_cbc_decrypt : NULL; | |
498 | break; | |
499 | case 256: | |
500 | dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? | |
501 | (cbc128_f) aes256_t4_cbc_decrypt : NULL; | |
502 | break; | |
503 | default: | |
504 | ret = -1; | |
505 | } | |
506 | } else { | |
507 | ret = 0; | |
6435f0f6 | 508 | aes_t4_set_encrypt_key(key, bits, &dat->ks.ks); |
0f113f3e MC |
509 | dat->block = (block128_f) aes_t4_encrypt; |
510 | switch (bits) { | |
511 | case 128: | |
512 | if (mode == EVP_CIPH_CBC_MODE) | |
513 | dat->stream.cbc = (cbc128_f) aes128_t4_cbc_encrypt; | |
514 | else if (mode == EVP_CIPH_CTR_MODE) | |
515 | dat->stream.ctr = (ctr128_f) aes128_t4_ctr32_encrypt; | |
516 | else | |
517 | dat->stream.cbc = NULL; | |
518 | break; | |
519 | case 192: | |
520 | if (mode == EVP_CIPH_CBC_MODE) | |
521 | dat->stream.cbc = (cbc128_f) aes192_t4_cbc_encrypt; | |
522 | else if (mode == EVP_CIPH_CTR_MODE) | |
523 | dat->stream.ctr = (ctr128_f) aes192_t4_ctr32_encrypt; | |
524 | else | |
525 | dat->stream.cbc = NULL; | |
526 | break; | |
527 | case 256: | |
528 | if (mode == EVP_CIPH_CBC_MODE) | |
529 | dat->stream.cbc = (cbc128_f) aes256_t4_cbc_encrypt; | |
530 | else if (mode == EVP_CIPH_CTR_MODE) | |
531 | dat->stream.ctr = (ctr128_f) aes256_t4_ctr32_encrypt; | |
532 | else | |
533 | dat->stream.cbc = NULL; | |
534 | break; | |
535 | default: | |
536 | ret = -1; | |
537 | } | |
538 | } | |
539 | ||
540 | if (ret < 0) { | |
9311d0c4 | 541 | ERR_raise(ERR_LIB_EVP, EVP_R_AES_KEY_SETUP_FAILED); |
0f113f3e MC |
542 | return 0; |
543 | } | |
544 | ||
545 | return 1; | |
546 | } | |
547 | ||
5158c763 | 548 | # define aes_t4_cbc_cipher aes_cbc_cipher |
0f113f3e MC |
549 | static int aes_t4_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
550 | const unsigned char *in, size_t len); | |
551 | ||
5158c763 | 552 | # define aes_t4_ecb_cipher aes_ecb_cipher |
0f113f3e MC |
553 | static int aes_t4_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
554 | const unsigned char *in, size_t len); | |
555 | ||
5158c763 | 556 | # define aes_t4_ofb_cipher aes_ofb_cipher |
0f113f3e MC |
557 | static int aes_t4_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
558 | const unsigned char *in, size_t len); | |
559 | ||
5158c763 | 560 | # define aes_t4_cfb_cipher aes_cfb_cipher |
0f113f3e MC |
561 | static int aes_t4_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
562 | const unsigned char *in, size_t len); | |
563 | ||
5158c763 | 564 | # define aes_t4_cfb8_cipher aes_cfb8_cipher |
0f113f3e MC |
565 | static int aes_t4_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
566 | const unsigned char *in, size_t len); | |
567 | ||
5158c763 | 568 | # define aes_t4_cfb1_cipher aes_cfb1_cipher |
0f113f3e MC |
569 | static int aes_t4_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
570 | const unsigned char *in, size_t len); | |
571 | ||
5158c763 | 572 | # define aes_t4_ctr_cipher aes_ctr_cipher |
c5f6da54 | 573 | static int aes_t4_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 574 | const unsigned char *in, size_t len); |
c5f6da54 AP |
575 | |
576 | static int aes_t4_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
577 | const unsigned char *iv, int enc) |
578 | { | |
6435f0f6 | 579 | EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,ctx); |
80ce874a P |
580 | |
581 | if (iv == NULL && key == NULL) | |
0f113f3e MC |
582 | return 1; |
583 | if (key) { | |
80ce874a P |
584 | const int bits = EVP_CIPHER_CTX_get_key_length(ctx) * 8; |
585 | ||
586 | if (bits <= 0) { | |
587 | ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY_LENGTH); | |
588 | return 0; | |
589 | } | |
0f113f3e MC |
590 | aes_t4_set_encrypt_key(key, bits, &gctx->ks.ks); |
591 | CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, | |
592 | (block128_f) aes_t4_encrypt); | |
593 | switch (bits) { | |
594 | case 128: | |
595 | gctx->ctr = (ctr128_f) aes128_t4_ctr32_encrypt; | |
596 | break; | |
597 | case 192: | |
598 | gctx->ctr = (ctr128_f) aes192_t4_ctr32_encrypt; | |
599 | break; | |
600 | case 256: | |
601 | gctx->ctr = (ctr128_f) aes256_t4_ctr32_encrypt; | |
602 | break; | |
603 | default: | |
604 | return 0; | |
605 | } | |
606 | /* | |
607 | * If we have an iv can set it directly, otherwise use saved IV. | |
608 | */ | |
609 | if (iv == NULL && gctx->iv_set) | |
610 | iv = gctx->iv; | |
611 | if (iv) { | |
612 | CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); | |
613 | gctx->iv_set = 1; | |
614 | } | |
615 | gctx->key_set = 1; | |
616 | } else { | |
617 | /* If key set use IV, otherwise copy */ | |
618 | if (gctx->key_set) | |
619 | CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); | |
620 | else | |
621 | memcpy(gctx->iv, iv, gctx->ivlen); | |
622 | gctx->iv_set = 1; | |
623 | gctx->iv_gen = 0; | |
624 | } | |
625 | return 1; | |
626 | } | |
627 | ||
5158c763 | 628 | # define aes_t4_gcm_cipher aes_gcm_cipher |
c5f6da54 | 629 | static int aes_t4_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 630 | const unsigned char *in, size_t len); |
c5f6da54 AP |
631 | |
632 | static int aes_t4_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
633 | const unsigned char *iv, int enc) |
634 | { | |
6435f0f6 | 635 | EVP_AES_XTS_CTX *xctx = EVP_C_DATA(EVP_AES_XTS_CTX,ctx); |
2c840201 | 636 | |
0f113f3e MC |
637 | if (!iv && !key) |
638 | return 1; | |
639 | ||
640 | if (key) { | |
3538b0f7 | 641 | /* The key is two half length keys in reality */ |
80ce874a P |
642 | const int keylen = EVP_CIPHER_CTX_get_key_length(ctx); |
643 | const int bytes = keylen / 2; | |
3538b0f7 P |
644 | const int bits = bytes * 8; |
645 | ||
80ce874a P |
646 | if (keylen <= 0) { |
647 | ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY_LENGTH); | |
648 | return 0; | |
649 | } | |
3538b0f7 P |
650 | /* |
651 | * Verify that the two keys are different. | |
4bd8b240 | 652 | * |
3538b0f7 P |
653 | * This addresses Rogaway's vulnerability. |
654 | * See comment in aes_xts_init_key() below. | |
655 | */ | |
2c840201 P |
656 | if ((!allow_insecure_decrypt || enc) |
657 | && CRYPTO_memcmp(key, key + bytes, bytes) == 0) { | |
9311d0c4 | 658 | ERR_raise(ERR_LIB_EVP, EVP_R_XTS_DUPLICATED_KEYS); |
3538b0f7 P |
659 | return 0; |
660 | } | |
661 | ||
0f113f3e MC |
662 | xctx->stream = NULL; |
663 | /* key_len is two AES keys */ | |
664 | if (enc) { | |
665 | aes_t4_set_encrypt_key(key, bits, &xctx->ks1.ks); | |
666 | xctx->xts.block1 = (block128_f) aes_t4_encrypt; | |
667 | switch (bits) { | |
668 | case 128: | |
669 | xctx->stream = aes128_t4_xts_encrypt; | |
670 | break; | |
0f113f3e MC |
671 | case 256: |
672 | xctx->stream = aes256_t4_xts_encrypt; | |
673 | break; | |
674 | default: | |
675 | return 0; | |
676 | } | |
677 | } else { | |
3538b0f7 | 678 | aes_t4_set_decrypt_key(key, bits, &xctx->ks1.ks); |
0f113f3e MC |
679 | xctx->xts.block1 = (block128_f) aes_t4_decrypt; |
680 | switch (bits) { | |
681 | case 128: | |
682 | xctx->stream = aes128_t4_xts_decrypt; | |
683 | break; | |
0f113f3e MC |
684 | case 256: |
685 | xctx->stream = aes256_t4_xts_decrypt; | |
686 | break; | |
687 | default: | |
688 | return 0; | |
689 | } | |
690 | } | |
691 | ||
3538b0f7 | 692 | aes_t4_set_encrypt_key(key + bytes, bits, &xctx->ks2.ks); |
0f113f3e MC |
693 | xctx->xts.block2 = (block128_f) aes_t4_encrypt; |
694 | ||
695 | xctx->xts.key1 = &xctx->ks1; | |
696 | } | |
697 | ||
698 | if (iv) { | |
699 | xctx->xts.key2 = &xctx->ks2; | |
9197c226 | 700 | memcpy(ctx->iv, iv, 16); |
0f113f3e MC |
701 | } |
702 | ||
703 | return 1; | |
704 | } | |
705 | ||
5158c763 | 706 | # define aes_t4_xts_cipher aes_xts_cipher |
c5f6da54 | 707 | static int aes_t4_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 708 | const unsigned char *in, size_t len); |
c5f6da54 AP |
709 | |
710 | static int aes_t4_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
711 | const unsigned char *iv, int enc) |
712 | { | |
6435f0f6 | 713 | EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,ctx); |
80ce874a P |
714 | |
715 | if (iv == NULL && key == NULL) | |
0f113f3e | 716 | return 1; |
80ce874a P |
717 | |
718 | if (key != NULL) { | |
719 | const int bits = EVP_CIPHER_CTX_get_key_length(ctx) * 8; | |
720 | ||
721 | if (bits <= 0) { | |
722 | ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY_LENGTH); | |
723 | return 0; | |
724 | } | |
0f113f3e MC |
725 | aes_t4_set_encrypt_key(key, bits, &cctx->ks.ks); |
726 | CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, | |
727 | &cctx->ks, (block128_f) aes_t4_encrypt); | |
bdc985b1 | 728 | cctx->str = NULL; |
0f113f3e MC |
729 | cctx->key_set = 1; |
730 | } | |
731 | if (iv) { | |
9197c226 | 732 | memcpy(ctx->iv, iv, 15 - cctx->L); |
0f113f3e MC |
733 | cctx->iv_set = 1; |
734 | } | |
735 | return 1; | |
736 | } | |
737 | ||
5158c763 | 738 | # define aes_t4_ccm_cipher aes_ccm_cipher |
c5f6da54 | 739 | static int aes_t4_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 740 | const unsigned char *in, size_t len); |
c5f6da54 | 741 | |
5158c763 | 742 | # ifndef OPENSSL_NO_OCB |
e6b336ef | 743 | static int aes_t4_ocb_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, |
0f113f3e MC |
744 | const unsigned char *iv, int enc) |
745 | { | |
6435f0f6 | 746 | EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,ctx); |
80ce874a P |
747 | |
748 | if (iv == NULL && key == NULL) | |
0f113f3e | 749 | return 1; |
80ce874a P |
750 | |
751 | if (key != NULL) { | |
752 | const int keylen = EVP_CIPHER_CTX_get_key_length(ctx) * 8; | |
753 | ||
754 | if (keylen <= 0) { | |
755 | ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY_LENGTH); | |
756 | return 0; | |
757 | } | |
0f113f3e MC |
758 | do { |
759 | /* | |
760 | * We set both the encrypt and decrypt key here because decrypt | |
761 | * needs both. We could possibly optimise to remove setting the | |
762 | * decrypt for an encryption operation. | |
763 | */ | |
80ce874a P |
764 | aes_t4_set_encrypt_key(key, keylen, &octx->ksenc.ks); |
765 | aes_t4_set_decrypt_key(key, keylen, &octx->ksdec.ks); | |
bdc985b1 AP |
766 | if (!CRYPTO_ocb128_init(&octx->ocb, |
767 | &octx->ksenc.ks, &octx->ksdec.ks, | |
0f113f3e | 768 | (block128_f) aes_t4_encrypt, |
02dc0b82 AP |
769 | (block128_f) aes_t4_decrypt, |
770 | NULL)) | |
0f113f3e MC |
771 | return 0; |
772 | } | |
773 | while (0); | |
774 | ||
775 | /* | |
776 | * If we have an iv we can set it directly, otherwise use saved IV. | |
777 | */ | |
778 | if (iv == NULL && octx->iv_set) | |
779 | iv = octx->iv; | |
780 | if (iv) { | |
781 | if (CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen) | |
782 | != 1) | |
783 | return 0; | |
784 | octx->iv_set = 1; | |
785 | } | |
786 | octx->key_set = 1; | |
787 | } else { | |
788 | /* If key set use IV, otherwise copy */ | |
789 | if (octx->key_set) | |
790 | CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen); | |
791 | else | |
792 | memcpy(octx->iv, iv, octx->ivlen); | |
793 | octx->iv_set = 1; | |
794 | } | |
795 | return 1; | |
796 | } | |
797 | ||
5158c763 | 798 | # define aes_t4_ocb_cipher aes_ocb_cipher |
e6b336ef | 799 | static int aes_t4_ocb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 800 | const unsigned char *in, size_t len); |
5158c763 | 801 | # endif /* OPENSSL_NO_OCB */ |
e6b336ef | 802 | |
87d06aed MC |
803 | # ifndef OPENSSL_NO_SIV |
804 | # define aes_t4_siv_init_key aes_siv_init_key | |
805 | # define aes_t4_siv_cipher aes_siv_cipher | |
806 | # endif /* OPENSSL_NO_SIV */ | |
807 | ||
5158c763 | 808 | # define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \ |
c5f6da54 | 809 | static const EVP_CIPHER aes_t4_##keylen##_##mode = { \ |
0f113f3e MC |
810 | nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \ |
811 | flags|EVP_CIPH_##MODE##_MODE, \ | |
f6c95e46 | 812 | EVP_ORIG_GLOBAL, \ |
0f113f3e MC |
813 | aes_t4_init_key, \ |
814 | aes_t4_##mode##_cipher, \ | |
815 | NULL, \ | |
816 | sizeof(EVP_AES_KEY), \ | |
817 | NULL,NULL,NULL,NULL }; \ | |
c5f6da54 | 818 | static const EVP_CIPHER aes_##keylen##_##mode = { \ |
0f113f3e MC |
819 | nid##_##keylen##_##nmode,blocksize, \ |
820 | keylen/8,ivlen, \ | |
821 | flags|EVP_CIPH_##MODE##_MODE, \ | |
f6c95e46 | 822 | EVP_ORIG_GLOBAL, \ |
0f113f3e MC |
823 | aes_init_key, \ |
824 | aes_##mode##_cipher, \ | |
825 | NULL, \ | |
826 | sizeof(EVP_AES_KEY), \ | |
827 | NULL,NULL,NULL,NULL }; \ | |
c5f6da54 AP |
828 | const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ |
829 | { return SPARC_AES_CAPABLE?&aes_t4_##keylen##_##mode:&aes_##keylen##_##mode; } | |
830 | ||
5158c763 | 831 | # define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \ |
c5f6da54 | 832 | static const EVP_CIPHER aes_t4_##keylen##_##mode = { \ |
0f113f3e | 833 | nid##_##keylen##_##mode,blocksize, \ |
b1ceb439 TS |
834 | (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE||EVP_CIPH_##MODE##_MODE==EVP_CIPH_SIV_MODE?2:1)*keylen/8, \ |
835 | ivlen, \ | |
0f113f3e | 836 | flags|EVP_CIPH_##MODE##_MODE, \ |
f6c95e46 | 837 | EVP_ORIG_GLOBAL, \ |
0f113f3e MC |
838 | aes_t4_##mode##_init_key, \ |
839 | aes_t4_##mode##_cipher, \ | |
840 | aes_##mode##_cleanup, \ | |
841 | sizeof(EVP_AES_##MODE##_CTX), \ | |
842 | NULL,NULL,aes_##mode##_ctrl,NULL }; \ | |
c5f6da54 | 843 | static const EVP_CIPHER aes_##keylen##_##mode = { \ |
0f113f3e | 844 | nid##_##keylen##_##mode,blocksize, \ |
b1ceb439 TS |
845 | (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE||EVP_CIPH_##MODE##_MODE==EVP_CIPH_SIV_MODE?2:1)*keylen/8, \ |
846 | ivlen, \ | |
0f113f3e | 847 | flags|EVP_CIPH_##MODE##_MODE, \ |
f6c95e46 | 848 | EVP_ORIG_GLOBAL, \ |
0f113f3e MC |
849 | aes_##mode##_init_key, \ |
850 | aes_##mode##_cipher, \ | |
851 | aes_##mode##_cleanup, \ | |
852 | sizeof(EVP_AES_##MODE##_CTX), \ | |
853 | NULL,NULL,aes_##mode##_ctrl,NULL }; \ | |
c5f6da54 AP |
854 | const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ |
855 | { return SPARC_AES_CAPABLE?&aes_t4_##keylen##_##mode:&aes_##keylen##_##mode; } | |
856 | ||
459b15d4 SL |
857 | #elif defined(S390X_aes_128_CAPABLE) |
858 | /* IBM S390X support */ | |
55bd169f PS |
859 | typedef struct { |
860 | union { | |
39147079 | 861 | OSSL_UNION_ALIGN; |
55bd169f PS |
862 | /*- |
863 | * KM-AES parameter block - begin | |
864 | * (see z/Architecture Principles of Operation >= SA22-7832-06) | |
865 | */ | |
866 | struct { | |
867 | unsigned char k[32]; | |
868 | } param; | |
869 | /* KM-AES parameter block - end */ | |
870 | } km; | |
871 | unsigned int fc; | |
872 | } S390X_AES_ECB_CTX; | |
873 | ||
dacd2a87 PS |
874 | typedef struct { |
875 | union { | |
39147079 | 876 | OSSL_UNION_ALIGN; |
dacd2a87 PS |
877 | /*- |
878 | * KMO-AES parameter block - begin | |
879 | * (see z/Architecture Principles of Operation >= SA22-7832-08) | |
880 | */ | |
881 | struct { | |
882 | unsigned char cv[16]; | |
883 | unsigned char k[32]; | |
884 | } param; | |
885 | /* KMO-AES parameter block - end */ | |
886 | } kmo; | |
887 | unsigned int fc; | |
dacd2a87 PS |
888 | } S390X_AES_OFB_CTX; |
889 | ||
74d38a86 PS |
890 | typedef struct { |
891 | union { | |
39147079 | 892 | OSSL_UNION_ALIGN; |
74d38a86 PS |
893 | /*- |
894 | * KMF-AES parameter block - begin | |
895 | * (see z/Architecture Principles of Operation >= SA22-7832-08) | |
896 | */ | |
897 | struct { | |
898 | unsigned char cv[16]; | |
899 | unsigned char k[32]; | |
900 | } param; | |
901 | /* KMF-AES parameter block - end */ | |
902 | } kmf; | |
903 | unsigned int fc; | |
74d38a86 PS |
904 | } S390X_AES_CFB_CTX; |
905 | ||
96530eea PS |
906 | typedef struct { |
907 | union { | |
39147079 | 908 | OSSL_UNION_ALIGN; |
96530eea | 909 | /*- |
5d2a6f4b PS |
910 | * KMA-GCM-AES parameter block - begin |
911 | * (see z/Architecture Principles of Operation >= SA22-7832-11) | |
96530eea PS |
912 | */ |
913 | struct { | |
914 | unsigned char reserved[12]; | |
915 | union { | |
916 | unsigned int w; | |
917 | unsigned char b[4]; | |
918 | } cv; | |
919 | union { | |
920 | unsigned long long g[2]; | |
921 | unsigned char b[16]; | |
922 | } t; | |
923 | unsigned char h[16]; | |
924 | unsigned long long taadl; | |
925 | unsigned long long tpcl; | |
926 | union { | |
927 | unsigned long long g[2]; | |
928 | unsigned int w[4]; | |
929 | } j0; | |
930 | unsigned char k[32]; | |
931 | } param; | |
5d2a6f4b | 932 | /* KMA-GCM-AES parameter block - end */ |
96530eea PS |
933 | } kma; |
934 | unsigned int fc; | |
935 | int key_set; | |
936 | ||
937 | unsigned char *iv; | |
938 | int ivlen; | |
939 | int iv_set; | |
940 | int iv_gen; | |
941 | ||
942 | int taglen; | |
943 | ||
944 | unsigned char ares[16]; | |
945 | unsigned char mres[16]; | |
946 | unsigned char kres[16]; | |
947 | int areslen; | |
948 | int mreslen; | |
949 | int kreslen; | |
950 | ||
951 | int tls_aad_len; | |
d6b34570 | 952 | uint64_t tls_enc_records; /* Number of TLS records encrypted */ |
96530eea PS |
953 | } S390X_AES_GCM_CTX; |
954 | ||
39f5b069 PS |
955 | typedef struct { |
956 | union { | |
39147079 | 957 | OSSL_UNION_ALIGN; |
39f5b069 PS |
958 | /*- |
959 | * Padding is chosen so that ccm.kmac_param.k overlaps with key.k and | |
960 | * ccm.fc with key.k.rounds. Remember that on s390x, an AES_KEY's | |
961 | * rounds field is used to store the function code and that the key | |
962 | * schedule is not stored (if aes hardware support is detected). | |
963 | */ | |
964 | struct { | |
965 | unsigned char pad[16]; | |
966 | AES_KEY k; | |
967 | } key; | |
968 | ||
969 | struct { | |
970 | /*- | |
971 | * KMAC-AES parameter block - begin | |
972 | * (see z/Architecture Principles of Operation >= SA22-7832-08) | |
973 | */ | |
974 | struct { | |
975 | union { | |
976 | unsigned long long g[2]; | |
977 | unsigned char b[16]; | |
978 | } icv; | |
979 | unsigned char k[32]; | |
980 | } kmac_param; | |
79c44b4e | 981 | /* KMAC-AES parameter block - end */ |
39f5b069 PS |
982 | |
983 | union { | |
984 | unsigned long long g[2]; | |
985 | unsigned char b[16]; | |
986 | } nonce; | |
987 | union { | |
988 | unsigned long long g[2]; | |
989 | unsigned char b[16]; | |
990 | } buf; | |
991 | ||
992 | unsigned long long blocks; | |
993 | int l; | |
994 | int m; | |
995 | int tls_aad_len; | |
996 | int iv_set; | |
997 | int tag_set; | |
998 | int len_set; | |
999 | int key_set; | |
1000 | ||
1001 | unsigned char pad[140]; | |
1002 | unsigned int fc; | |
1003 | } ccm; | |
1004 | } aes; | |
1005 | } S390X_AES_CCM_CTX; | |
1006 | ||
96530eea PS |
1007 | # define s390x_aes_init_key aes_init_key |
1008 | static int s390x_aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
1009 | const unsigned char *iv, int enc); | |
1010 | ||
dd6b2706 | 1011 | # define S390X_AES_CBC_CTX EVP_AES_KEY |
55bd169f PS |
1012 | |
1013 | # define s390x_aes_cbc_init_key aes_init_key | |
96530eea PS |
1014 | |
1015 | # define s390x_aes_cbc_cipher aes_cbc_cipher | |
1016 | static int s390x_aes_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
1017 | const unsigned char *in, size_t len); | |
1018 | ||
55bd169f PS |
1019 | static int s390x_aes_ecb_init_key(EVP_CIPHER_CTX *ctx, |
1020 | const unsigned char *key, | |
1021 | const unsigned char *iv, int enc) | |
1022 | { | |
1023 | S390X_AES_ECB_CTX *cctx = EVP_C_DATA(S390X_AES_ECB_CTX, ctx); | |
ed576acd | 1024 | const int keylen = EVP_CIPHER_CTX_get_key_length(ctx); |
55bd169f | 1025 | |
80ce874a P |
1026 | if (keylen <= 0) { |
1027 | ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY_LENGTH); | |
1028 | return 0; | |
1029 | } | |
55bd169f PS |
1030 | cctx->fc = S390X_AES_FC(keylen); |
1031 | if (!enc) | |
1032 | cctx->fc |= S390X_DECRYPT; | |
1033 | ||
1034 | memcpy(cctx->km.param.k, key, keylen); | |
1035 | return 1; | |
1036 | } | |
96530eea | 1037 | |
96530eea | 1038 | static int s390x_aes_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
55bd169f PS |
1039 | const unsigned char *in, size_t len) |
1040 | { | |
1041 | S390X_AES_ECB_CTX *cctx = EVP_C_DATA(S390X_AES_ECB_CTX, ctx); | |
1042 | ||
1043 | s390x_km(in, len, out, cctx->fc, &cctx->km.param); | |
1044 | return 1; | |
1045 | } | |
96530eea | 1046 | |
dacd2a87 PS |
1047 | static int s390x_aes_ofb_init_key(EVP_CIPHER_CTX *ctx, |
1048 | const unsigned char *key, | |
1049 | const unsigned char *ivec, int enc) | |
1050 | { | |
1051 | S390X_AES_OFB_CTX *cctx = EVP_C_DATA(S390X_AES_OFB_CTX, ctx); | |
9197c226 | 1052 | const unsigned char *iv = ctx->oiv; |
ed576acd TM |
1053 | const int keylen = EVP_CIPHER_CTX_get_key_length(ctx); |
1054 | const int ivlen = EVP_CIPHER_CTX_get_iv_length(ctx); | |
55bd169f | 1055 | |
80ce874a P |
1056 | if (keylen <= 0) { |
1057 | ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY_LENGTH); | |
1058 | return 0; | |
1059 | } | |
1060 | if (ivlen <= 0) { | |
1061 | ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_IV_LENGTH); | |
1062 | return 0; | |
1063 | } | |
dacd2a87 PS |
1064 | memcpy(cctx->kmo.param.cv, iv, ivlen); |
1065 | memcpy(cctx->kmo.param.k, key, keylen); | |
1066 | cctx->fc = S390X_AES_FC(keylen); | |
dacd2a87 PS |
1067 | return 1; |
1068 | } | |
96530eea | 1069 | |
96530eea | 1070 | static int s390x_aes_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
dacd2a87 PS |
1071 | const unsigned char *in, size_t len) |
1072 | { | |
1073 | S390X_AES_OFB_CTX *cctx = EVP_C_DATA(S390X_AES_OFB_CTX, ctx); | |
c719ea17 IF |
1074 | const int ivlen = EVP_CIPHER_CTX_get_iv_length(ctx); |
1075 | unsigned char *iv = EVP_CIPHER_CTX_iv_noconst(ctx); | |
f9ccd209 | 1076 | int n = ctx->num; |
dacd2a87 PS |
1077 | int rem; |
1078 | ||
c719ea17 | 1079 | memcpy(cctx->kmo.param.cv, iv, ivlen); |
dacd2a87 PS |
1080 | while (n && len) { |
1081 | *out = *in ^ cctx->kmo.param.cv[n]; | |
1082 | n = (n + 1) & 0xf; | |
1083 | --len; | |
1084 | ++in; | |
1085 | ++out; | |
1086 | } | |
1087 | ||
1088 | rem = len & 0xf; | |
1089 | ||
1090 | len &= ~(size_t)0xf; | |
1091 | if (len) { | |
1092 | s390x_kmo(in, len, out, cctx->fc, &cctx->kmo.param); | |
1093 | ||
1094 | out += len; | |
1095 | in += len; | |
1096 | } | |
1097 | ||
1098 | if (rem) { | |
1099 | s390x_km(cctx->kmo.param.cv, 16, cctx->kmo.param.cv, cctx->fc, | |
1100 | cctx->kmo.param.k); | |
1101 | ||
1102 | while (rem--) { | |
1103 | out[n] = in[n] ^ cctx->kmo.param.cv[n]; | |
1104 | ++n; | |
1105 | } | |
1106 | } | |
1107 | ||
c719ea17 | 1108 | memcpy(iv, cctx->kmo.param.cv, ivlen); |
f9ccd209 | 1109 | ctx->num = n; |
dacd2a87 PS |
1110 | return 1; |
1111 | } | |
96530eea | 1112 | |
74d38a86 PS |
1113 | static int s390x_aes_cfb_init_key(EVP_CIPHER_CTX *ctx, |
1114 | const unsigned char *key, | |
1115 | const unsigned char *ivec, int enc) | |
1116 | { | |
1117 | S390X_AES_CFB_CTX *cctx = EVP_C_DATA(S390X_AES_CFB_CTX, ctx); | |
9197c226 | 1118 | const unsigned char *iv = ctx->oiv; |
ed576acd TM |
1119 | const int keylen = EVP_CIPHER_CTX_get_key_length(ctx); |
1120 | const int ivlen = EVP_CIPHER_CTX_get_iv_length(ctx); | |
74d38a86 | 1121 | |
80ce874a P |
1122 | if (keylen <= 0) { |
1123 | ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY_LENGTH); | |
1124 | return 0; | |
1125 | } | |
1126 | if (ivlen <= 0) { | |
1127 | ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_IV_LENGTH); | |
1128 | return 0; | |
1129 | } | |
74d38a86 PS |
1130 | cctx->fc = S390X_AES_FC(keylen); |
1131 | cctx->fc |= 16 << 24; /* 16 bytes cipher feedback */ | |
1132 | if (!enc) | |
1133 | cctx->fc |= S390X_DECRYPT; | |
55bd169f | 1134 | |
74d38a86 PS |
1135 | memcpy(cctx->kmf.param.cv, iv, ivlen); |
1136 | memcpy(cctx->kmf.param.k, key, keylen); | |
1137 | return 1; | |
1138 | } | |
96530eea | 1139 | |
96530eea | 1140 | static int s390x_aes_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
74d38a86 PS |
1141 | const unsigned char *in, size_t len) |
1142 | { | |
1143 | S390X_AES_CFB_CTX *cctx = EVP_C_DATA(S390X_AES_CFB_CTX, ctx); | |
ed576acd TM |
1144 | const int keylen = EVP_CIPHER_CTX_get_key_length(ctx); |
1145 | const int enc = EVP_CIPHER_CTX_is_encrypting(ctx); | |
c719ea17 IF |
1146 | const int ivlen = EVP_CIPHER_CTX_get_iv_length(ctx); |
1147 | unsigned char *iv = EVP_CIPHER_CTX_iv_noconst(ctx); | |
f9ccd209 | 1148 | int n = ctx->num; |
74d38a86 PS |
1149 | int rem; |
1150 | unsigned char tmp; | |
1151 | ||
80ce874a P |
1152 | if (keylen <= 0) { |
1153 | ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY_LENGTH); | |
1154 | return 0; | |
1155 | } | |
1156 | if (ivlen <= 0) { | |
1157 | ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_IV_LENGTH); | |
1158 | return 0; | |
1159 | } | |
c719ea17 | 1160 | memcpy(cctx->kmf.param.cv, iv, ivlen); |
74d38a86 PS |
1161 | while (n && len) { |
1162 | tmp = *in; | |
1163 | *out = cctx->kmf.param.cv[n] ^ tmp; | |
1164 | cctx->kmf.param.cv[n] = enc ? *out : tmp; | |
1165 | n = (n + 1) & 0xf; | |
1166 | --len; | |
1167 | ++in; | |
1168 | ++out; | |
1169 | } | |
1170 | ||
1171 | rem = len & 0xf; | |
1172 | ||
1173 | len &= ~(size_t)0xf; | |
1174 | if (len) { | |
1175 | s390x_kmf(in, len, out, cctx->fc, &cctx->kmf.param); | |
1176 | ||
1177 | out += len; | |
1178 | in += len; | |
1179 | } | |
1180 | ||
1181 | if (rem) { | |
1182 | s390x_km(cctx->kmf.param.cv, 16, cctx->kmf.param.cv, | |
1183 | S390X_AES_FC(keylen), cctx->kmf.param.k); | |
1184 | ||
1185 | while (rem--) { | |
1186 | tmp = in[n]; | |
1187 | out[n] = cctx->kmf.param.cv[n] ^ tmp; | |
1188 | cctx->kmf.param.cv[n] = enc ? out[n] : tmp; | |
1189 | ++n; | |
1190 | } | |
1191 | } | |
96530eea | 1192 | |
c719ea17 | 1193 | memcpy(iv, cctx->kmf.param.cv, ivlen); |
f9ccd209 | 1194 | ctx->num = n; |
74d38a86 PS |
1195 | return 1; |
1196 | } | |
1197 | ||
74d38a86 PS |
1198 | static int s390x_aes_cfb8_init_key(EVP_CIPHER_CTX *ctx, |
1199 | const unsigned char *key, | |
1200 | const unsigned char *ivec, int enc) | |
1201 | { | |
1202 | S390X_AES_CFB_CTX *cctx = EVP_C_DATA(S390X_AES_CFB_CTX, ctx); | |
9197c226 | 1203 | const unsigned char *iv = ctx->oiv; |
ed576acd TM |
1204 | const int keylen = EVP_CIPHER_CTX_get_key_length(ctx); |
1205 | const int ivlen = EVP_CIPHER_CTX_get_iv_length(ctx); | |
74d38a86 | 1206 | |
80ce874a P |
1207 | if (keylen <= 0) { |
1208 | ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY_LENGTH); | |
1209 | return 0; | |
1210 | } | |
1211 | if (ivlen <= 0) { | |
1212 | ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_IV_LENGTH); | |
1213 | return 0; | |
1214 | } | |
74d38a86 PS |
1215 | cctx->fc = S390X_AES_FC(keylen); |
1216 | cctx->fc |= 1 << 24; /* 1 byte cipher feedback */ | |
1217 | if (!enc) | |
1218 | cctx->fc |= S390X_DECRYPT; | |
96530eea | 1219 | |
74d38a86 PS |
1220 | memcpy(cctx->kmf.param.cv, iv, ivlen); |
1221 | memcpy(cctx->kmf.param.k, key, keylen); | |
1222 | return 1; | |
1223 | } | |
55bd169f | 1224 | |
96530eea | 1225 | static int s390x_aes_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
74d38a86 PS |
1226 | const unsigned char *in, size_t len) |
1227 | { | |
1228 | S390X_AES_CFB_CTX *cctx = EVP_C_DATA(S390X_AES_CFB_CTX, ctx); | |
c719ea17 IF |
1229 | const int ivlen = EVP_CIPHER_CTX_get_iv_length(ctx); |
1230 | unsigned char *iv = EVP_CIPHER_CTX_iv_noconst(ctx); | |
74d38a86 | 1231 | |
c719ea17 | 1232 | memcpy(cctx->kmf.param.cv, iv, ivlen); |
74d38a86 | 1233 | s390x_kmf(in, len, out, cctx->fc, &cctx->kmf.param); |
c719ea17 | 1234 | memcpy(iv, cctx->kmf.param.cv, ivlen); |
74d38a86 PS |
1235 | return 1; |
1236 | } | |
96530eea | 1237 | |
55bd169f PS |
1238 | # define s390x_aes_cfb1_init_key aes_init_key |
1239 | ||
96530eea PS |
1240 | # define s390x_aes_cfb1_cipher aes_cfb1_cipher |
1241 | static int s390x_aes_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
1242 | const unsigned char *in, size_t len); | |
1243 | ||
dd6b2706 | 1244 | # define S390X_AES_CTR_CTX EVP_AES_KEY |
55bd169f PS |
1245 | |
1246 | # define s390x_aes_ctr_init_key aes_init_key | |
96530eea PS |
1247 | |
1248 | # define s390x_aes_ctr_cipher aes_ctr_cipher | |
1249 | static int s390x_aes_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
1250 | const unsigned char *in, size_t len); | |
1251 | ||
bcf082d1 | 1252 | /* iv + padding length for iv lengths != 12 */ |
dd6b2706 | 1253 | # define S390X_gcm_ivpadlen(i) ((((i) + 15) >> 4 << 4) + 16) |
96530eea | 1254 | |
5d2a6f4b PS |
1255 | /*- |
1256 | * Process additional authenticated data. Returns 0 on success. Code is | |
1257 | * big-endian. | |
1258 | */ | |
96530eea PS |
1259 | static int s390x_aes_gcm_aad(S390X_AES_GCM_CTX *ctx, const unsigned char *aad, |
1260 | size_t len) | |
1261 | { | |
1262 | unsigned long long alen; | |
1263 | int n, rem; | |
1264 | ||
1265 | if (ctx->kma.param.tpcl) | |
1266 | return -2; | |
1267 | ||
1268 | alen = ctx->kma.param.taadl + len; | |
1269 | if (alen > (U64(1) << 61) || (sizeof(len) == 8 && alen < len)) | |
1270 | return -1; | |
1271 | ctx->kma.param.taadl = alen; | |
1272 | ||
1273 | n = ctx->areslen; | |
1274 | if (n) { | |
1275 | while (n && len) { | |
1276 | ctx->ares[n] = *aad; | |
1277 | n = (n + 1) & 0xf; | |
1278 | ++aad; | |
1279 | --len; | |
1280 | } | |
1281 | /* ctx->ares contains a complete block if offset has wrapped around */ | |
1282 | if (!n) { | |
1283 | s390x_kma(ctx->ares, 16, NULL, 0, NULL, ctx->fc, &ctx->kma.param); | |
1284 | ctx->fc |= S390X_KMA_HS; | |
1285 | } | |
1286 | ctx->areslen = n; | |
1287 | } | |
1288 | ||
1289 | rem = len & 0xf; | |
1290 | ||
25868993 | 1291 | len &= ~(size_t)0xf; |
96530eea PS |
1292 | if (len) { |
1293 | s390x_kma(aad, len, NULL, 0, NULL, ctx->fc, &ctx->kma.param); | |
1294 | aad += len; | |
1295 | ctx->fc |= S390X_KMA_HS; | |
1296 | } | |
1297 | ||
1298 | if (rem) { | |
1299 | ctx->areslen = rem; | |
1300 | ||
1301 | do { | |
1302 | --rem; | |
1303 | ctx->ares[rem] = aad[rem]; | |
1304 | } while (rem); | |
1305 | } | |
1306 | return 0; | |
1307 | } | |
1308 | ||
5d2a6f4b PS |
1309 | /*- |
1310 | * En/de-crypt plain/cipher-text and authenticate ciphertext. Returns 0 for | |
1311 | * success. Code is big-endian. | |
1312 | */ | |
96530eea PS |
1313 | static int s390x_aes_gcm(S390X_AES_GCM_CTX *ctx, const unsigned char *in, |
1314 | unsigned char *out, size_t len) | |
1315 | { | |
1316 | const unsigned char *inptr; | |
1317 | unsigned long long mlen; | |
1318 | union { | |
1319 | unsigned int w[4]; | |
1320 | unsigned char b[16]; | |
1321 | } buf; | |
1322 | size_t inlen; | |
1323 | int n, rem, i; | |
1324 | ||
1325 | mlen = ctx->kma.param.tpcl + len; | |
1326 | if (mlen > ((U64(1) << 36) - 32) || (sizeof(len) == 8 && mlen < len)) | |
1327 | return -1; | |
1328 | ctx->kma.param.tpcl = mlen; | |
1329 | ||
1330 | n = ctx->mreslen; | |
1331 | if (n) { | |
1332 | inptr = in; | |
1333 | inlen = len; | |
1334 | while (n && inlen) { | |
1335 | ctx->mres[n] = *inptr; | |
1336 | n = (n + 1) & 0xf; | |
1337 | ++inptr; | |
1338 | --inlen; | |
1339 | } | |
1340 | /* ctx->mres contains a complete block if offset has wrapped around */ | |
1341 | if (!n) { | |
1342 | s390x_kma(ctx->ares, ctx->areslen, ctx->mres, 16, buf.b, | |
1343 | ctx->fc | S390X_KMA_LAAD, &ctx->kma.param); | |
1344 | ctx->fc |= S390X_KMA_HS; | |
1345 | ctx->areslen = 0; | |
1346 | ||
1347 | /* previous call already encrypted/decrypted its remainder, | |
1348 | * see comment below */ | |
1349 | n = ctx->mreslen; | |
1350 | while (n) { | |
1351 | *out = buf.b[n]; | |
1352 | n = (n + 1) & 0xf; | |
1353 | ++out; | |
1354 | ++in; | |
1355 | --len; | |
1356 | } | |
1357 | ctx->mreslen = 0; | |
1358 | } | |
1359 | } | |
1360 | ||
1361 | rem = len & 0xf; | |
1362 | ||
25868993 | 1363 | len &= ~(size_t)0xf; |
96530eea PS |
1364 | if (len) { |
1365 | s390x_kma(ctx->ares, ctx->areslen, in, len, out, | |
1366 | ctx->fc | S390X_KMA_LAAD, &ctx->kma.param); | |
1367 | in += len; | |
1368 | out += len; | |
1369 | ctx->fc |= S390X_KMA_HS; | |
1370 | ctx->areslen = 0; | |
1371 | } | |
1372 | ||
1373 | /*- | |
1374 | * If there is a remainder, it has to be saved such that it can be | |
1375 | * processed by kma later. However, we also have to do the for-now | |
1376 | * unauthenticated encryption/decryption part here and now... | |
1377 | */ | |
1378 | if (rem) { | |
1379 | if (!ctx->mreslen) { | |
1380 | buf.w[0] = ctx->kma.param.j0.w[0]; | |
1381 | buf.w[1] = ctx->kma.param.j0.w[1]; | |
1382 | buf.w[2] = ctx->kma.param.j0.w[2]; | |
1383 | buf.w[3] = ctx->kma.param.cv.w + 1; | |
1384 | s390x_km(buf.b, 16, ctx->kres, ctx->fc & 0x1f, &ctx->kma.param.k); | |
1385 | } | |
1386 | ||
1387 | n = ctx->mreslen; | |
1388 | for (i = 0; i < rem; i++) { | |
1389 | ctx->mres[n + i] = in[i]; | |
1390 | out[i] = in[i] ^ ctx->kres[n + i]; | |
1391 | } | |
1392 | ||
1393 | ctx->mreslen += rem; | |
1394 | } | |
1395 | return 0; | |
1396 | } | |
1397 | ||
5d2a6f4b PS |
1398 | /*- |
1399 | * Initialize context structure. Code is big-endian. | |
1400 | */ | |
96530eea PS |
1401 | static void s390x_aes_gcm_setiv(S390X_AES_GCM_CTX *ctx, |
1402 | const unsigned char *iv) | |
1403 | { | |
1404 | ctx->kma.param.t.g[0] = 0; | |
1405 | ctx->kma.param.t.g[1] = 0; | |
1406 | ctx->kma.param.tpcl = 0; | |
1407 | ctx->kma.param.taadl = 0; | |
1408 | ctx->mreslen = 0; | |
1409 | ctx->areslen = 0; | |
1410 | ctx->kreslen = 0; | |
1411 | ||
1412 | if (ctx->ivlen == 12) { | |
1413 | memcpy(&ctx->kma.param.j0, iv, ctx->ivlen); | |
1414 | ctx->kma.param.j0.w[3] = 1; | |
1415 | ctx->kma.param.cv.w = 1; | |
1416 | } else { | |
1417 | /* ctx->iv has the right size and is already padded. */ | |
1418 | memcpy(ctx->iv, iv, ctx->ivlen); | |
1419 | s390x_kma(ctx->iv, S390X_gcm_ivpadlen(ctx->ivlen), NULL, 0, NULL, | |
1420 | ctx->fc, &ctx->kma.param); | |
1421 | ctx->fc |= S390X_KMA_HS; | |
1422 | ||
1423 | ctx->kma.param.j0.g[0] = ctx->kma.param.t.g[0]; | |
1424 | ctx->kma.param.j0.g[1] = ctx->kma.param.t.g[1]; | |
1425 | ctx->kma.param.cv.w = ctx->kma.param.j0.w[3]; | |
1426 | ctx->kma.param.t.g[0] = 0; | |
1427 | ctx->kma.param.t.g[1] = 0; | |
1428 | } | |
1429 | } | |
1430 | ||
5d2a6f4b PS |
1431 | /*- |
1432 | * Performs various operations on the context structure depending on control | |
1433 | * type. Returns 1 for success, 0 for failure and -1 for unknown control type. | |
1434 | * Code is big-endian. | |
1435 | */ | |
96530eea PS |
1436 | static int s390x_aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) |
1437 | { | |
1438 | S390X_AES_GCM_CTX *gctx = EVP_C_DATA(S390X_AES_GCM_CTX, c); | |
1439 | S390X_AES_GCM_CTX *gctx_out; | |
1440 | EVP_CIPHER_CTX *out; | |
9197c226 | 1441 | unsigned char *buf; |
96530eea PS |
1442 | int ivlen, enc, len; |
1443 | ||
1444 | switch (type) { | |
1445 | case EVP_CTRL_INIT: | |
ed576acd | 1446 | ivlen = EVP_CIPHER_get_iv_length(c->cipher); |
96530eea PS |
1447 | gctx->key_set = 0; |
1448 | gctx->iv_set = 0; | |
1449 | gctx->ivlen = ivlen; | |
9197c226 | 1450 | gctx->iv = c->iv; |
96530eea PS |
1451 | gctx->taglen = -1; |
1452 | gctx->iv_gen = 0; | |
1453 | gctx->tls_aad_len = -1; | |
1454 | return 1; | |
1455 | ||
7dddf2fc SL |
1456 | case EVP_CTRL_GET_IVLEN: |
1457 | *(int *)ptr = gctx->ivlen; | |
1458 | return 1; | |
1459 | ||
96530eea PS |
1460 | case EVP_CTRL_AEAD_SET_IVLEN: |
1461 | if (arg <= 0) | |
1462 | return 0; | |
1463 | ||
1464 | if (arg != 12) { | |
96530eea PS |
1465 | len = S390X_gcm_ivpadlen(arg); |
1466 | ||
1467 | /* Allocate memory for iv if needed. */ | |
1468 | if (gctx->ivlen == 12 || len > S390X_gcm_ivpadlen(gctx->ivlen)) { | |
9197c226 | 1469 | if (gctx->iv != c->iv) |
96530eea PS |
1470 | OPENSSL_free(gctx->iv); |
1471 | ||
e077455e | 1472 | if ((gctx->iv = OPENSSL_malloc(len)) == NULL) |
96530eea PS |
1473 | return 0; |
1474 | } | |
1475 | /* Add padding. */ | |
1476 | memset(gctx->iv + arg, 0, len - arg - 8); | |
1477 | *((unsigned long long *)(gctx->iv + len - 8)) = arg << 3; | |
1478 | } | |
1479 | gctx->ivlen = arg; | |
1480 | return 1; | |
1481 | ||
1482 | case EVP_CTRL_AEAD_SET_TAG: | |
1483 | buf = EVP_CIPHER_CTX_buf_noconst(c); | |
ed576acd | 1484 | enc = EVP_CIPHER_CTX_is_encrypting(c); |
96530eea PS |
1485 | if (arg <= 0 || arg > 16 || enc) |
1486 | return 0; | |
1487 | ||
1488 | memcpy(buf, ptr, arg); | |
1489 | gctx->taglen = arg; | |
1490 | return 1; | |
1491 | ||
1492 | case EVP_CTRL_AEAD_GET_TAG: | |
ed576acd | 1493 | enc = EVP_CIPHER_CTX_is_encrypting(c); |
96530eea PS |
1494 | if (arg <= 0 || arg > 16 || !enc || gctx->taglen < 0) |
1495 | return 0; | |
1496 | ||
1497 | memcpy(ptr, gctx->kma.param.t.b, arg); | |
1498 | return 1; | |
1499 | ||
1500 | case EVP_CTRL_GCM_SET_IV_FIXED: | |
1501 | /* Special case: -1 length restores whole iv */ | |
1502 | if (arg == -1) { | |
1503 | memcpy(gctx->iv, ptr, gctx->ivlen); | |
1504 | gctx->iv_gen = 1; | |
1505 | return 1; | |
1506 | } | |
1507 | /* | |
1508 | * Fixed field must be at least 4 bytes and invocation field at least | |
1509 | * 8. | |
1510 | */ | |
1511 | if ((arg < 4) || (gctx->ivlen - arg) < 8) | |
1512 | return 0; | |
1513 | ||
1514 | if (arg) | |
1515 | memcpy(gctx->iv, ptr, arg); | |
1516 | ||
ed576acd | 1517 | enc = EVP_CIPHER_CTX_is_encrypting(c); |
16cfc2c9 KR |
1518 | if (enc && RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0) |
1519 | return 0; | |
96530eea PS |
1520 | |
1521 | gctx->iv_gen = 1; | |
1522 | return 1; | |
1523 | ||
1524 | case EVP_CTRL_GCM_IV_GEN: | |
1525 | if (gctx->iv_gen == 0 || gctx->key_set == 0) | |
1526 | return 0; | |
1527 | ||
1528 | s390x_aes_gcm_setiv(gctx, gctx->iv); | |
1529 | ||
1530 | if (arg <= 0 || arg > gctx->ivlen) | |
1531 | arg = gctx->ivlen; | |
1532 | ||
1533 | memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg); | |
1534 | /* | |
1535 | * Invocation field will be at least 8 bytes in size and so no need | |
1536 | * to check wrap around or increment more than last 8 bytes. | |
1537 | */ | |
03a5e5ae | 1538 | ctr64_inc(gctx->iv + gctx->ivlen - 8); |
96530eea PS |
1539 | gctx->iv_set = 1; |
1540 | return 1; | |
1541 | ||
1542 | case EVP_CTRL_GCM_SET_IV_INV: | |
ed576acd | 1543 | enc = EVP_CIPHER_CTX_is_encrypting(c); |
96530eea PS |
1544 | if (gctx->iv_gen == 0 || gctx->key_set == 0 || enc) |
1545 | return 0; | |
1546 | ||
1547 | memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg); | |
1548 | s390x_aes_gcm_setiv(gctx, gctx->iv); | |
1549 | gctx->iv_set = 1; | |
1550 | return 1; | |
1551 | ||
1552 | case EVP_CTRL_AEAD_TLS1_AAD: | |
1553 | /* Save the aad for later use. */ | |
1554 | if (arg != EVP_AEAD_TLS1_AAD_LEN) | |
1555 | return 0; | |
1556 | ||
1557 | buf = EVP_CIPHER_CTX_buf_noconst(c); | |
1558 | memcpy(buf, ptr, arg); | |
1559 | gctx->tls_aad_len = arg; | |
d6b34570 | 1560 | gctx->tls_enc_records = 0; |
96530eea PS |
1561 | |
1562 | len = buf[arg - 2] << 8 | buf[arg - 1]; | |
1563 | /* Correct length for explicit iv. */ | |
1564 | if (len < EVP_GCM_TLS_EXPLICIT_IV_LEN) | |
1565 | return 0; | |
1566 | len -= EVP_GCM_TLS_EXPLICIT_IV_LEN; | |
1567 | ||
1568 | /* If decrypting correct for tag too. */ | |
ed576acd | 1569 | enc = EVP_CIPHER_CTX_is_encrypting(c); |
96530eea PS |
1570 | if (!enc) { |
1571 | if (len < EVP_GCM_TLS_TAG_LEN) | |
1572 | return 0; | |
1573 | len -= EVP_GCM_TLS_TAG_LEN; | |
1574 | } | |
1575 | buf[arg - 2] = len >> 8; | |
1576 | buf[arg - 1] = len & 0xff; | |
1577 | /* Extra padding: tag appended to record. */ | |
1578 | return EVP_GCM_TLS_TAG_LEN; | |
1579 | ||
1580 | case EVP_CTRL_COPY: | |
1581 | out = ptr; | |
1582 | gctx_out = EVP_C_DATA(S390X_AES_GCM_CTX, out); | |
96530eea | 1583 | |
9197c226 BK |
1584 | if (gctx->iv == c->iv) { |
1585 | gctx_out->iv = out->iv; | |
96530eea PS |
1586 | } else { |
1587 | len = S390X_gcm_ivpadlen(gctx->ivlen); | |
1588 | ||
e077455e | 1589 | if ((gctx_out->iv = OPENSSL_malloc(len)) == NULL) |
96530eea PS |
1590 | return 0; |
1591 | ||
1592 | memcpy(gctx_out->iv, gctx->iv, len); | |
1593 | } | |
1594 | return 1; | |
1595 | ||
1596 | default: | |
1597 | return -1; | |
1598 | } | |
1599 | } | |
1600 | ||
5d2a6f4b PS |
1601 | /*- |
1602 | * Set key and/or iv. Returns 1 on success. Otherwise 0 is returned. | |
1603 | */ | |
96530eea PS |
1604 | static int s390x_aes_gcm_init_key(EVP_CIPHER_CTX *ctx, |
1605 | const unsigned char *key, | |
1606 | const unsigned char *iv, int enc) | |
1607 | { | |
1608 | S390X_AES_GCM_CTX *gctx = EVP_C_DATA(S390X_AES_GCM_CTX, ctx); | |
1609 | int keylen; | |
1610 | ||
1611 | if (iv == NULL && key == NULL) | |
1612 | return 1; | |
1613 | ||
1614 | if (key != NULL) { | |
ed576acd | 1615 | keylen = EVP_CIPHER_CTX_get_key_length(ctx); |
80ce874a P |
1616 | if (keylen <= 0) { |
1617 | ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY_LENGTH); | |
1618 | return 0; | |
1619 | } | |
1620 | ||
96530eea PS |
1621 | memcpy(&gctx->kma.param.k, key, keylen); |
1622 | ||
8eb399fb | 1623 | gctx->fc = S390X_AES_FC(keylen); |
96530eea PS |
1624 | if (!enc) |
1625 | gctx->fc |= S390X_DECRYPT; | |
1626 | ||
1627 | if (iv == NULL && gctx->iv_set) | |
1628 | iv = gctx->iv; | |
1629 | ||
1630 | if (iv != NULL) { | |
1631 | s390x_aes_gcm_setiv(gctx, iv); | |
1632 | gctx->iv_set = 1; | |
1633 | } | |
1634 | gctx->key_set = 1; | |
1635 | } else { | |
1636 | if (gctx->key_set) | |
1637 | s390x_aes_gcm_setiv(gctx, iv); | |
1638 | else | |
1639 | memcpy(gctx->iv, iv, gctx->ivlen); | |
1640 | ||
1641 | gctx->iv_set = 1; | |
1642 | gctx->iv_gen = 0; | |
1643 | } | |
1644 | return 1; | |
1645 | } | |
1646 | ||
5d2a6f4b PS |
1647 | /*- |
1648 | * En/de-crypt and authenticate TLS packet. Returns the number of bytes written | |
1649 | * if successful. Otherwise -1 is returned. Code is big-endian. | |
1650 | */ | |
96530eea PS |
1651 | static int s390x_aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
1652 | const unsigned char *in, size_t len) | |
1653 | { | |
1654 | S390X_AES_GCM_CTX *gctx = EVP_C_DATA(S390X_AES_GCM_CTX, ctx); | |
1655 | const unsigned char *buf = EVP_CIPHER_CTX_buf_noconst(ctx); | |
ed576acd | 1656 | const int enc = EVP_CIPHER_CTX_is_encrypting(ctx); |
96530eea PS |
1657 | int rv = -1; |
1658 | ||
1659 | if (out != in || len < (EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN)) | |
1660 | return -1; | |
1661 | ||
d6b34570 P |
1662 | /* |
1663 | * Check for too many keys as per FIPS 140-2 IG A.5 "Key/IV Pair Uniqueness | |
1664 | * Requirements from SP 800-38D". The requirements is for one party to the | |
1665 | * communication to fail after 2^64 - 1 keys. We do this on the encrypting | |
1666 | * side only. | |
1667 | */ | |
b134300a | 1668 | if (enc && ++gctx->tls_enc_records == 0) { |
9311d0c4 | 1669 | ERR_raise(ERR_LIB_EVP, EVP_R_TOO_MANY_RECORDS); |
d6b34570 P |
1670 | goto err; |
1671 | } | |
1672 | ||
96530eea PS |
1673 | if (EVP_CIPHER_CTX_ctrl(ctx, enc ? EVP_CTRL_GCM_IV_GEN |
1674 | : EVP_CTRL_GCM_SET_IV_INV, | |
1675 | EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0) | |
1676 | goto err; | |
1677 | ||
1678 | in += EVP_GCM_TLS_EXPLICIT_IV_LEN; | |
1679 | out += EVP_GCM_TLS_EXPLICIT_IV_LEN; | |
1680 | len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN; | |
1681 | ||
1682 | gctx->kma.param.taadl = gctx->tls_aad_len << 3; | |
1683 | gctx->kma.param.tpcl = len << 3; | |
1684 | s390x_kma(buf, gctx->tls_aad_len, in, len, out, | |
1685 | gctx->fc | S390X_KMA_LAAD | S390X_KMA_LPC, &gctx->kma.param); | |
1686 | ||
1687 | if (enc) { | |
1688 | memcpy(out + len, gctx->kma.param.t.b, EVP_GCM_TLS_TAG_LEN); | |
1689 | rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN; | |
1690 | } else { | |
1691 | if (CRYPTO_memcmp(gctx->kma.param.t.b, in + len, | |
1692 | EVP_GCM_TLS_TAG_LEN)) { | |
1693 | OPENSSL_cleanse(out, len); | |
1694 | goto err; | |
1695 | } | |
1696 | rv = len; | |
1697 | } | |
1698 | err: | |
1699 | gctx->iv_set = 0; | |
1700 | gctx->tls_aad_len = -1; | |
1701 | return rv; | |
1702 | } | |
1703 | ||
5d2a6f4b PS |
1704 | /*- |
1705 | * Called from EVP layer to initialize context, process additional | |
1706 | * authenticated data, en/de-crypt plain/cipher-text and authenticate | |
1707 | * ciphertext or process a TLS packet, depending on context. Returns bytes | |
1708 | * written on success. Otherwise -1 is returned. Code is big-endian. | |
1709 | */ | |
96530eea PS |
1710 | static int s390x_aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
1711 | const unsigned char *in, size_t len) | |
1712 | { | |
1713 | S390X_AES_GCM_CTX *gctx = EVP_C_DATA(S390X_AES_GCM_CTX, ctx); | |
1714 | unsigned char *buf, tmp[16]; | |
1715 | int enc; | |
1716 | ||
1717 | if (!gctx->key_set) | |
1718 | return -1; | |
1719 | ||
1720 | if (gctx->tls_aad_len >= 0) | |
1721 | return s390x_aes_gcm_tls_cipher(ctx, out, in, len); | |
1722 | ||
1723 | if (!gctx->iv_set) | |
1724 | return -1; | |
1725 | ||
1726 | if (in != NULL) { | |
1727 | if (out == NULL) { | |
1728 | if (s390x_aes_gcm_aad(gctx, in, len)) | |
1729 | return -1; | |
1730 | } else { | |
1731 | if (s390x_aes_gcm(gctx, in, out, len)) | |
1732 | return -1; | |
1733 | } | |
1734 | return len; | |
1735 | } else { | |
1736 | gctx->kma.param.taadl <<= 3; | |
1737 | gctx->kma.param.tpcl <<= 3; | |
1738 | s390x_kma(gctx->ares, gctx->areslen, gctx->mres, gctx->mreslen, tmp, | |
1739 | gctx->fc | S390X_KMA_LAAD | S390X_KMA_LPC, &gctx->kma.param); | |
1740 | /* recall that we already did en-/decrypt gctx->mres | |
1741 | * and returned it to caller... */ | |
1742 | OPENSSL_cleanse(tmp, gctx->mreslen); | |
1743 | gctx->iv_set = 0; | |
1744 | ||
ed576acd | 1745 | enc = EVP_CIPHER_CTX_is_encrypting(ctx); |
96530eea PS |
1746 | if (enc) { |
1747 | gctx->taglen = 16; | |
1748 | } else { | |
1749 | if (gctx->taglen < 0) | |
1750 | return -1; | |
1751 | ||
1752 | buf = EVP_CIPHER_CTX_buf_noconst(ctx); | |
1753 | if (CRYPTO_memcmp(buf, gctx->kma.param.t.b, gctx->taglen)) | |
1754 | return -1; | |
1755 | } | |
1756 | return 0; | |
1757 | } | |
1758 | } | |
1759 | ||
1760 | static int s390x_aes_gcm_cleanup(EVP_CIPHER_CTX *c) | |
1761 | { | |
1762 | S390X_AES_GCM_CTX *gctx = EVP_C_DATA(S390X_AES_GCM_CTX, c); | |
96530eea PS |
1763 | |
1764 | if (gctx == NULL) | |
1765 | return 0; | |
1766 | ||
9197c226 | 1767 | if (gctx->iv != c->iv) |
96530eea PS |
1768 | OPENSSL_free(gctx->iv); |
1769 | ||
1770 | OPENSSL_cleanse(gctx, sizeof(*gctx)); | |
1771 | return 1; | |
1772 | } | |
1773 | ||
dd6b2706 | 1774 | # define S390X_AES_XTS_CTX EVP_AES_XTS_CTX |
96530eea PS |
1775 | |
1776 | # define s390x_aes_xts_init_key aes_xts_init_key | |
1777 | static int s390x_aes_xts_init_key(EVP_CIPHER_CTX *ctx, | |
1778 | const unsigned char *key, | |
1779 | const unsigned char *iv, int enc); | |
1780 | # define s390x_aes_xts_cipher aes_xts_cipher | |
1781 | static int s390x_aes_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
1782 | const unsigned char *in, size_t len); | |
1783 | # define s390x_aes_xts_ctrl aes_xts_ctrl | |
1784 | static int s390x_aes_xts_ctrl(EVP_CIPHER_CTX *, int type, int arg, void *ptr); | |
1785 | # define s390x_aes_xts_cleanup aes_xts_cleanup | |
1786 | ||
39f5b069 PS |
1787 | /*- |
1788 | * Set nonce and length fields. Code is big-endian. | |
1789 | */ | |
1790 | static inline void s390x_aes_ccm_setiv(S390X_AES_CCM_CTX *ctx, | |
1791 | const unsigned char *nonce, | |
1792 | size_t mlen) | |
1793 | { | |
1794 | ctx->aes.ccm.nonce.b[0] &= ~S390X_CCM_AAD_FLAG; | |
1795 | ctx->aes.ccm.nonce.g[1] = mlen; | |
1796 | memcpy(ctx->aes.ccm.nonce.b + 1, nonce, 15 - ctx->aes.ccm.l); | |
1797 | } | |
1798 | ||
1799 | /*- | |
1800 | * Process additional authenticated data. Code is big-endian. | |
1801 | */ | |
1802 | static void s390x_aes_ccm_aad(S390X_AES_CCM_CTX *ctx, const unsigned char *aad, | |
1803 | size_t alen) | |
1804 | { | |
1805 | unsigned char *ptr; | |
1806 | int i, rem; | |
1807 | ||
1808 | if (!alen) | |
1809 | return; | |
1810 | ||
1811 | ctx->aes.ccm.nonce.b[0] |= S390X_CCM_AAD_FLAG; | |
1812 | ||
1813 | /* Suppress 'type-punned pointer dereference' warning. */ | |
1814 | ptr = ctx->aes.ccm.buf.b; | |
1815 | ||
1816 | if (alen < ((1 << 16) - (1 << 8))) { | |
1817 | *(uint16_t *)ptr = alen; | |
1818 | i = 2; | |
1819 | } else if (sizeof(alen) == 8 | |
1820 | && alen >= (size_t)1 << (32 % (sizeof(alen) * 8))) { | |
1821 | *(uint16_t *)ptr = 0xffff; | |
1822 | *(uint64_t *)(ptr + 2) = alen; | |
1823 | i = 10; | |
1824 | } else { | |
1825 | *(uint16_t *)ptr = 0xfffe; | |
1826 | *(uint32_t *)(ptr + 2) = alen; | |
1827 | i = 6; | |
1828 | } | |
1829 | ||
1830 | while (i < 16 && alen) { | |
1831 | ctx->aes.ccm.buf.b[i] = *aad; | |
1832 | ++aad; | |
1833 | --alen; | |
1834 | ++i; | |
1835 | } | |
1836 | while (i < 16) { | |
1837 | ctx->aes.ccm.buf.b[i] = 0; | |
1838 | ++i; | |
1839 | } | |
1840 | ||
1841 | ctx->aes.ccm.kmac_param.icv.g[0] = 0; | |
1842 | ctx->aes.ccm.kmac_param.icv.g[1] = 0; | |
1843 | s390x_kmac(ctx->aes.ccm.nonce.b, 32, ctx->aes.ccm.fc, | |
1844 | &ctx->aes.ccm.kmac_param); | |
1845 | ctx->aes.ccm.blocks += 2; | |
1846 | ||
1847 | rem = alen & 0xf; | |
25868993 | 1848 | alen &= ~(size_t)0xf; |
39f5b069 PS |
1849 | if (alen) { |
1850 | s390x_kmac(aad, alen, ctx->aes.ccm.fc, &ctx->aes.ccm.kmac_param); | |
1851 | ctx->aes.ccm.blocks += alen >> 4; | |
1852 | aad += alen; | |
1853 | } | |
1854 | if (rem) { | |
1855 | for (i = 0; i < rem; i++) | |
1856 | ctx->aes.ccm.kmac_param.icv.b[i] ^= aad[i]; | |
1857 | ||
1858 | s390x_km(ctx->aes.ccm.kmac_param.icv.b, 16, | |
1859 | ctx->aes.ccm.kmac_param.icv.b, ctx->aes.ccm.fc, | |
1860 | ctx->aes.ccm.kmac_param.k); | |
1861 | ctx->aes.ccm.blocks++; | |
1862 | } | |
1863 | } | |
1864 | ||
1865 | /*- | |
1866 | * En/de-crypt plain/cipher-text. Compute tag from plaintext. Returns 0 for | |
1867 | * success. | |
1868 | */ | |
1869 | static int s390x_aes_ccm(S390X_AES_CCM_CTX *ctx, const unsigned char *in, | |
1870 | unsigned char *out, size_t len, int enc) | |
1871 | { | |
1872 | size_t n, rem; | |
1873 | unsigned int i, l, num; | |
1874 | unsigned char flags; | |
1875 | ||
1876 | flags = ctx->aes.ccm.nonce.b[0]; | |
1877 | if (!(flags & S390X_CCM_AAD_FLAG)) { | |
1878 | s390x_km(ctx->aes.ccm.nonce.b, 16, ctx->aes.ccm.kmac_param.icv.b, | |
1879 | ctx->aes.ccm.fc, ctx->aes.ccm.kmac_param.k); | |
1880 | ctx->aes.ccm.blocks++; | |
1881 | } | |
1882 | l = flags & 0x7; | |
1883 | ctx->aes.ccm.nonce.b[0] = l; | |
1884 | ||
1885 | /*- | |
1886 | * Reconstruct length from encoded length field | |
1887 | * and initialize it with counter value. | |
1888 | */ | |
1889 | n = 0; | |
1890 | for (i = 15 - l; i < 15; i++) { | |
1891 | n |= ctx->aes.ccm.nonce.b[i]; | |
1892 | ctx->aes.ccm.nonce.b[i] = 0; | |
1893 | n <<= 8; | |
1894 | } | |
1895 | n |= ctx->aes.ccm.nonce.b[15]; | |
1896 | ctx->aes.ccm.nonce.b[15] = 1; | |
1897 | ||
1898 | if (n != len) | |
dd6b2706 | 1899 | return -1; /* length mismatch */ |
39f5b069 PS |
1900 | |
1901 | if (enc) { | |
1902 | /* Two operations per block plus one for tag encryption */ | |
1903 | ctx->aes.ccm.blocks += (((len + 15) >> 4) << 1) + 1; | |
1904 | if (ctx->aes.ccm.blocks > (1ULL << 61)) | |
dd6b2706 | 1905 | return -2; /* too much data */ |
39f5b069 PS |
1906 | } |
1907 | ||
1908 | num = 0; | |
1909 | rem = len & 0xf; | |
25868993 | 1910 | len &= ~(size_t)0xf; |
39f5b069 PS |
1911 | |
1912 | if (enc) { | |
1913 | /* mac-then-encrypt */ | |
1914 | if (len) | |
1915 | s390x_kmac(in, len, ctx->aes.ccm.fc, &ctx->aes.ccm.kmac_param); | |
1916 | if (rem) { | |
1917 | for (i = 0; i < rem; i++) | |
1918 | ctx->aes.ccm.kmac_param.icv.b[i] ^= in[len + i]; | |
1919 | ||
1920 | s390x_km(ctx->aes.ccm.kmac_param.icv.b, 16, | |
1921 | ctx->aes.ccm.kmac_param.icv.b, ctx->aes.ccm.fc, | |
1922 | ctx->aes.ccm.kmac_param.k); | |
1923 | } | |
1924 | ||
1925 | CRYPTO_ctr128_encrypt_ctr32(in, out, len + rem, &ctx->aes.key.k, | |
1926 | ctx->aes.ccm.nonce.b, ctx->aes.ccm.buf.b, | |
1927 | &num, (ctr128_f)AES_ctr32_encrypt); | |
1928 | } else { | |
1929 | /* decrypt-then-mac */ | |
1930 | CRYPTO_ctr128_encrypt_ctr32(in, out, len + rem, &ctx->aes.key.k, | |
1931 | ctx->aes.ccm.nonce.b, ctx->aes.ccm.buf.b, | |
1932 | &num, (ctr128_f)AES_ctr32_encrypt); | |
1933 | ||
1934 | if (len) | |
1935 | s390x_kmac(out, len, ctx->aes.ccm.fc, &ctx->aes.ccm.kmac_param); | |
1936 | if (rem) { | |
1937 | for (i = 0; i < rem; i++) | |
1938 | ctx->aes.ccm.kmac_param.icv.b[i] ^= out[len + i]; | |
1939 | ||
1940 | s390x_km(ctx->aes.ccm.kmac_param.icv.b, 16, | |
1941 | ctx->aes.ccm.kmac_param.icv.b, ctx->aes.ccm.fc, | |
1942 | ctx->aes.ccm.kmac_param.k); | |
1943 | } | |
1944 | } | |
1945 | /* encrypt tag */ | |
1946 | for (i = 15 - l; i < 16; i++) | |
1947 | ctx->aes.ccm.nonce.b[i] = 0; | |
1948 | ||
1949 | s390x_km(ctx->aes.ccm.nonce.b, 16, ctx->aes.ccm.buf.b, ctx->aes.ccm.fc, | |
1950 | ctx->aes.ccm.kmac_param.k); | |
1951 | ctx->aes.ccm.kmac_param.icv.g[0] ^= ctx->aes.ccm.buf.g[0]; | |
1952 | ctx->aes.ccm.kmac_param.icv.g[1] ^= ctx->aes.ccm.buf.g[1]; | |
1953 | ||
dd6b2706 | 1954 | ctx->aes.ccm.nonce.b[0] = flags; /* restore flags field */ |
39f5b069 PS |
1955 | return 0; |
1956 | } | |
1957 | ||
1958 | /*- | |
1959 | * En/de-crypt and authenticate TLS packet. Returns the number of bytes written | |
1960 | * if successful. Otherwise -1 is returned. | |
1961 | */ | |
1962 | static int s390x_aes_ccm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
1963 | const unsigned char *in, size_t len) | |
1964 | { | |
1965 | S390X_AES_CCM_CTX *cctx = EVP_C_DATA(S390X_AES_CCM_CTX, ctx); | |
9197c226 | 1966 | unsigned char *ivec = ctx->iv; |
39f5b069 | 1967 | unsigned char *buf = EVP_CIPHER_CTX_buf_noconst(ctx); |
ed576acd | 1968 | const int enc = EVP_CIPHER_CTX_is_encrypting(ctx); |
39f5b069 PS |
1969 | |
1970 | if (out != in | |
1971 | || len < (EVP_CCM_TLS_EXPLICIT_IV_LEN + (size_t)cctx->aes.ccm.m)) | |
1972 | return -1; | |
1973 | ||
1974 | if (enc) { | |
1975 | /* Set explicit iv (sequence number). */ | |
1976 | memcpy(out, buf, EVP_CCM_TLS_EXPLICIT_IV_LEN); | |
1977 | } | |
1978 | ||
1979 | len -= EVP_CCM_TLS_EXPLICIT_IV_LEN + cctx->aes.ccm.m; | |
1980 | /*- | |
1981 | * Get explicit iv (sequence number). We already have fixed iv | |
1982 | * (server/client_write_iv) here. | |
1983 | */ | |
1984 | memcpy(ivec + EVP_CCM_TLS_FIXED_IV_LEN, in, EVP_CCM_TLS_EXPLICIT_IV_LEN); | |
1985 | s390x_aes_ccm_setiv(cctx, ivec, len); | |
1986 | ||
1987 | /* Process aad (sequence number|type|version|length) */ | |
1988 | s390x_aes_ccm_aad(cctx, buf, cctx->aes.ccm.tls_aad_len); | |
1989 | ||
1990 | in += EVP_CCM_TLS_EXPLICIT_IV_LEN; | |
1991 | out += EVP_CCM_TLS_EXPLICIT_IV_LEN; | |
96530eea | 1992 | |
39f5b069 PS |
1993 | if (enc) { |
1994 | if (s390x_aes_ccm(cctx, in, out, len, enc)) | |
1995 | return -1; | |
1996 | ||
1997 | memcpy(out + len, cctx->aes.ccm.kmac_param.icv.b, cctx->aes.ccm.m); | |
1998 | return len + EVP_CCM_TLS_EXPLICIT_IV_LEN + cctx->aes.ccm.m; | |
1999 | } else { | |
2000 | if (!s390x_aes_ccm(cctx, in, out, len, enc)) { | |
2001 | if (!CRYPTO_memcmp(cctx->aes.ccm.kmac_param.icv.b, in + len, | |
2002 | cctx->aes.ccm.m)) | |
2003 | return len; | |
2004 | } | |
2005 | ||
2006 | OPENSSL_cleanse(out, len); | |
2007 | return -1; | |
2008 | } | |
2009 | } | |
2010 | ||
2011 | /*- | |
2012 | * Set key and flag field and/or iv. Returns 1 if successful. Otherwise 0 is | |
2013 | * returned. | |
2014 | */ | |
96530eea PS |
2015 | static int s390x_aes_ccm_init_key(EVP_CIPHER_CTX *ctx, |
2016 | const unsigned char *key, | |
39f5b069 PS |
2017 | const unsigned char *iv, int enc) |
2018 | { | |
2019 | S390X_AES_CCM_CTX *cctx = EVP_C_DATA(S390X_AES_CCM_CTX, ctx); | |
39f5b069 PS |
2020 | int keylen; |
2021 | ||
2022 | if (iv == NULL && key == NULL) | |
2023 | return 1; | |
2024 | ||
2025 | if (key != NULL) { | |
ed576acd | 2026 | keylen = EVP_CIPHER_CTX_get_key_length(ctx); |
80ce874a P |
2027 | if (keylen <= 0) { |
2028 | ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY_LENGTH); | |
2029 | return 0; | |
2030 | } | |
2031 | ||
8eb399fb | 2032 | cctx->aes.ccm.fc = S390X_AES_FC(keylen); |
39f5b069 PS |
2033 | memcpy(cctx->aes.ccm.kmac_param.k, key, keylen); |
2034 | ||
2035 | /* Store encoded m and l. */ | |
2036 | cctx->aes.ccm.nonce.b[0] = ((cctx->aes.ccm.l - 1) & 0x7) | |
2037 | | (((cctx->aes.ccm.m - 2) >> 1) & 0x7) << 3; | |
2038 | memset(cctx->aes.ccm.nonce.b + 1, 0, | |
2039 | sizeof(cctx->aes.ccm.nonce.b)); | |
2040 | cctx->aes.ccm.blocks = 0; | |
2041 | ||
2042 | cctx->aes.ccm.key_set = 1; | |
2043 | } | |
2044 | ||
2045 | if (iv != NULL) { | |
9197c226 | 2046 | memcpy(ctx->iv, iv, 15 - cctx->aes.ccm.l); |
39f5b069 PS |
2047 | |
2048 | cctx->aes.ccm.iv_set = 1; | |
2049 | } | |
2050 | ||
2051 | return 1; | |
2052 | } | |
2053 | ||
2054 | /*- | |
2055 | * Called from EVP layer to initialize context, process additional | |
2056 | * authenticated data, en/de-crypt plain/cipher-text and authenticate | |
2057 | * plaintext or process a TLS packet, depending on context. Returns bytes | |
2058 | * written on success. Otherwise -1 is returned. | |
2059 | */ | |
96530eea | 2060 | static int s390x_aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
39f5b069 PS |
2061 | const unsigned char *in, size_t len) |
2062 | { | |
2063 | S390X_AES_CCM_CTX *cctx = EVP_C_DATA(S390X_AES_CCM_CTX, ctx); | |
ed576acd | 2064 | const int enc = EVP_CIPHER_CTX_is_encrypting(ctx); |
39f5b069 | 2065 | int rv; |
9197c226 | 2066 | unsigned char *buf; |
39f5b069 PS |
2067 | |
2068 | if (!cctx->aes.ccm.key_set) | |
2069 | return -1; | |
2070 | ||
2071 | if (cctx->aes.ccm.tls_aad_len >= 0) | |
2072 | return s390x_aes_ccm_tls_cipher(ctx, out, in, len); | |
2073 | ||
2074 | /*- | |
2075 | * Final(): Does not return any data. Recall that ccm is mac-then-encrypt | |
2076 | * so integrity must be checked already at Update() i.e., before | |
2077 | * potentially corrupted data is output. | |
2078 | */ | |
2079 | if (in == NULL && out != NULL) | |
2080 | return 0; | |
2081 | ||
2082 | if (!cctx->aes.ccm.iv_set) | |
2083 | return -1; | |
2084 | ||
39f5b069 PS |
2085 | if (out == NULL) { |
2086 | /* Update(): Pass message length. */ | |
2087 | if (in == NULL) { | |
9197c226 | 2088 | s390x_aes_ccm_setiv(cctx, ctx->iv, len); |
39f5b069 PS |
2089 | |
2090 | cctx->aes.ccm.len_set = 1; | |
2091 | return len; | |
2092 | } | |
2093 | ||
2094 | /* Update(): Process aad. */ | |
2095 | if (!cctx->aes.ccm.len_set && len) | |
2096 | return -1; | |
2097 | ||
2098 | s390x_aes_ccm_aad(cctx, in, len); | |
2099 | return len; | |
2100 | } | |
2101 | ||
887e22dd PS |
2102 | /* The tag must be set before actually decrypting data */ |
2103 | if (!enc && !cctx->aes.ccm.tag_set) | |
2104 | return -1; | |
2105 | ||
39f5b069 PS |
2106 | /* Update(): Process message. */ |
2107 | ||
2108 | if (!cctx->aes.ccm.len_set) { | |
2109 | /*- | |
46d08509 | 2110 | * In case message length was not previously set explicitly via |
39f5b069 PS |
2111 | * Update(), set it now. |
2112 | */ | |
9197c226 | 2113 | s390x_aes_ccm_setiv(cctx, ctx->iv, len); |
39f5b069 PS |
2114 | |
2115 | cctx->aes.ccm.len_set = 1; | |
2116 | } | |
2117 | ||
2118 | if (enc) { | |
2119 | if (s390x_aes_ccm(cctx, in, out, len, enc)) | |
2120 | return -1; | |
2121 | ||
2122 | cctx->aes.ccm.tag_set = 1; | |
2123 | return len; | |
2124 | } else { | |
2125 | rv = -1; | |
2126 | ||
2127 | if (!s390x_aes_ccm(cctx, in, out, len, enc)) { | |
2128 | buf = EVP_CIPHER_CTX_buf_noconst(ctx); | |
2129 | if (!CRYPTO_memcmp(cctx->aes.ccm.kmac_param.icv.b, buf, | |
2130 | cctx->aes.ccm.m)) | |
2131 | rv = len; | |
2132 | } | |
2133 | ||
2134 | if (rv == -1) | |
2135 | OPENSSL_cleanse(out, len); | |
2136 | ||
2137 | cctx->aes.ccm.iv_set = 0; | |
2138 | cctx->aes.ccm.tag_set = 0; | |
2139 | cctx->aes.ccm.len_set = 0; | |
2140 | return rv; | |
2141 | } | |
2142 | } | |
2143 | ||
2144 | /*- | |
2145 | * Performs various operations on the context structure depending on control | |
2146 | * type. Returns 1 for success, 0 for failure and -1 for unknown control type. | |
2147 | * Code is big-endian. | |
2148 | */ | |
2149 | static int s390x_aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) | |
2150 | { | |
2151 | S390X_AES_CCM_CTX *cctx = EVP_C_DATA(S390X_AES_CCM_CTX, c); | |
9197c226 | 2152 | unsigned char *buf; |
39f5b069 PS |
2153 | int enc, len; |
2154 | ||
2155 | switch (type) { | |
2156 | case EVP_CTRL_INIT: | |
2157 | cctx->aes.ccm.key_set = 0; | |
2158 | cctx->aes.ccm.iv_set = 0; | |
2159 | cctx->aes.ccm.l = 8; | |
2160 | cctx->aes.ccm.m = 12; | |
2161 | cctx->aes.ccm.tag_set = 0; | |
2162 | cctx->aes.ccm.len_set = 0; | |
2163 | cctx->aes.ccm.tls_aad_len = -1; | |
2164 | return 1; | |
2165 | ||
7dddf2fc SL |
2166 | case EVP_CTRL_GET_IVLEN: |
2167 | *(int *)ptr = 15 - cctx->aes.ccm.l; | |
2168 | return 1; | |
2169 | ||
39f5b069 PS |
2170 | case EVP_CTRL_AEAD_TLS1_AAD: |
2171 | if (arg != EVP_AEAD_TLS1_AAD_LEN) | |
2172 | return 0; | |
2173 | ||
2174 | /* Save the aad for later use. */ | |
2175 | buf = EVP_CIPHER_CTX_buf_noconst(c); | |
2176 | memcpy(buf, ptr, arg); | |
2177 | cctx->aes.ccm.tls_aad_len = arg; | |
2178 | ||
03a5e5ae | 2179 | len = buf[arg - 2] << 8 | buf[arg - 1]; |
39f5b069 PS |
2180 | if (len < EVP_CCM_TLS_EXPLICIT_IV_LEN) |
2181 | return 0; | |
2182 | ||
2183 | /* Correct length for explicit iv. */ | |
2184 | len -= EVP_CCM_TLS_EXPLICIT_IV_LEN; | |
2185 | ||
ed576acd | 2186 | enc = EVP_CIPHER_CTX_is_encrypting(c); |
39f5b069 PS |
2187 | if (!enc) { |
2188 | if (len < cctx->aes.ccm.m) | |
2189 | return 0; | |
2190 | ||
2191 | /* Correct length for tag. */ | |
2192 | len -= cctx->aes.ccm.m; | |
2193 | } | |
2194 | ||
03a5e5ae PS |
2195 | buf[arg - 2] = len >> 8; |
2196 | buf[arg - 1] = len & 0xff; | |
2197 | ||
39f5b069 PS |
2198 | /* Extra padding: tag appended to record. */ |
2199 | return cctx->aes.ccm.m; | |
2200 | ||
2201 | case EVP_CTRL_CCM_SET_IV_FIXED: | |
2202 | if (arg != EVP_CCM_TLS_FIXED_IV_LEN) | |
2203 | return 0; | |
2204 | ||
2205 | /* Copy to first part of the iv. */ | |
9197c226 | 2206 | memcpy(c->iv, ptr, arg); |
39f5b069 PS |
2207 | return 1; |
2208 | ||
2209 | case EVP_CTRL_AEAD_SET_IVLEN: | |
2210 | arg = 15 - arg; | |
2211 | /* fall-through */ | |
2212 | ||
2213 | case EVP_CTRL_CCM_SET_L: | |
2214 | if (arg < 2 || arg > 8) | |
2215 | return 0; | |
2216 | ||
2217 | cctx->aes.ccm.l = arg; | |
2218 | return 1; | |
2219 | ||
2220 | case EVP_CTRL_AEAD_SET_TAG: | |
2221 | if ((arg & 1) || arg < 4 || arg > 16) | |
2222 | return 0; | |
2223 | ||
ed576acd | 2224 | enc = EVP_CIPHER_CTX_is_encrypting(c); |
39f5b069 PS |
2225 | if (enc && ptr) |
2226 | return 0; | |
2227 | ||
2228 | if (ptr) { | |
2229 | cctx->aes.ccm.tag_set = 1; | |
2230 | buf = EVP_CIPHER_CTX_buf_noconst(c); | |
2231 | memcpy(buf, ptr, arg); | |
2232 | } | |
2233 | ||
2234 | cctx->aes.ccm.m = arg; | |
2235 | return 1; | |
2236 | ||
2237 | case EVP_CTRL_AEAD_GET_TAG: | |
ed576acd | 2238 | enc = EVP_CIPHER_CTX_is_encrypting(c); |
39f5b069 PS |
2239 | if (!enc || !cctx->aes.ccm.tag_set) |
2240 | return 0; | |
2241 | ||
1287dabd | 2242 | if (arg < cctx->aes.ccm.m) |
39f5b069 PS |
2243 | return 0; |
2244 | ||
2245 | memcpy(ptr, cctx->aes.ccm.kmac_param.icv.b, cctx->aes.ccm.m); | |
2246 | cctx->aes.ccm.tag_set = 0; | |
2247 | cctx->aes.ccm.iv_set = 0; | |
2248 | cctx->aes.ccm.len_set = 0; | |
2249 | return 1; | |
2250 | ||
2251 | case EVP_CTRL_COPY: | |
2252 | return 1; | |
2253 | ||
2254 | default: | |
2255 | return -1; | |
2256 | } | |
2257 | } | |
2258 | ||
96530eea PS |
2259 | # define s390x_aes_ccm_cleanup aes_ccm_cleanup |
2260 | ||
2261 | # ifndef OPENSSL_NO_OCB | |
dd6b2706 | 2262 | # define S390X_AES_OCB_CTX EVP_AES_OCB_CTX |
96530eea PS |
2263 | |
2264 | # define s390x_aes_ocb_init_key aes_ocb_init_key | |
2265 | static int s390x_aes_ocb_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
2266 | const unsigned char *iv, int enc); | |
2267 | # define s390x_aes_ocb_cipher aes_ocb_cipher | |
2268 | static int s390x_aes_ocb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
2269 | const unsigned char *in, size_t len); | |
2270 | # define s390x_aes_ocb_cleanup aes_ocb_cleanup | |
2271 | static int s390x_aes_ocb_cleanup(EVP_CIPHER_CTX *); | |
2272 | # define s390x_aes_ocb_ctrl aes_ocb_ctrl | |
2273 | static int s390x_aes_ocb_ctrl(EVP_CIPHER_CTX *, int type, int arg, void *ptr); | |
2274 | # endif | |
2275 | ||
e74be3d4 RL |
2276 | # ifndef OPENSSL_NO_SIV |
2277 | # define S390X_AES_SIV_CTX EVP_AES_SIV_CTX | |
e74be3d4 RL |
2278 | |
2279 | # define s390x_aes_siv_init_key aes_siv_init_key | |
2280 | # define s390x_aes_siv_cipher aes_siv_cipher | |
2281 | # define s390x_aes_siv_cleanup aes_siv_cleanup | |
2282 | # define s390x_aes_siv_ctrl aes_siv_ctrl | |
2283 | # endif | |
2284 | ||
dd6b2706 P |
2285 | # define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode, \ |
2286 | MODE,flags) \ | |
2287 | static const EVP_CIPHER s390x_aes_##keylen##_##mode = { \ | |
2288 | nid##_##keylen##_##nmode,blocksize, \ | |
2289 | keylen / 8, \ | |
2290 | ivlen, \ | |
2291 | flags | EVP_CIPH_##MODE##_MODE, \ | |
c39352e4 | 2292 | EVP_ORIG_GLOBAL, \ |
dd6b2706 P |
2293 | s390x_aes_##mode##_init_key, \ |
2294 | s390x_aes_##mode##_cipher, \ | |
2295 | NULL, \ | |
2296 | sizeof(S390X_AES_##MODE##_CTX), \ | |
2297 | NULL, \ | |
2298 | NULL, \ | |
2299 | NULL, \ | |
2300 | NULL \ | |
2301 | }; \ | |
2302 | static const EVP_CIPHER aes_##keylen##_##mode = { \ | |
2303 | nid##_##keylen##_##nmode, \ | |
2304 | blocksize, \ | |
2305 | keylen / 8, \ | |
2306 | ivlen, \ | |
2307 | flags | EVP_CIPH_##MODE##_MODE, \ | |
c39352e4 | 2308 | EVP_ORIG_GLOBAL, \ |
dd6b2706 P |
2309 | aes_init_key, \ |
2310 | aes_##mode##_cipher, \ | |
2311 | NULL, \ | |
2312 | sizeof(EVP_AES_KEY), \ | |
2313 | NULL, \ | |
2314 | NULL, \ | |
2315 | NULL, \ | |
2316 | NULL \ | |
2317 | }; \ | |
2318 | const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ | |
2319 | { \ | |
2320 | return S390X_aes_##keylen##_##mode##_CAPABLE ? \ | |
2321 | &s390x_aes_##keylen##_##mode : &aes_##keylen##_##mode; \ | |
96530eea PS |
2322 | } |
2323 | ||
2324 | # define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags)\ | |
dd6b2706 P |
2325 | static const EVP_CIPHER s390x_aes_##keylen##_##mode = { \ |
2326 | nid##_##keylen##_##mode, \ | |
2327 | blocksize, \ | |
2328 | (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE||EVP_CIPH_##MODE##_MODE==EVP_CIPH_SIV_MODE ? 2 : 1) * keylen / 8, \ | |
2329 | ivlen, \ | |
2330 | flags | EVP_CIPH_##MODE##_MODE, \ | |
c39352e4 | 2331 | EVP_ORIG_GLOBAL, \ |
dd6b2706 P |
2332 | s390x_aes_##mode##_init_key, \ |
2333 | s390x_aes_##mode##_cipher, \ | |
2334 | s390x_aes_##mode##_cleanup, \ | |
2335 | sizeof(S390X_AES_##MODE##_CTX), \ | |
2336 | NULL, \ | |
2337 | NULL, \ | |
2338 | s390x_aes_##mode##_ctrl, \ | |
2339 | NULL \ | |
2340 | }; \ | |
2341 | static const EVP_CIPHER aes_##keylen##_##mode = { \ | |
2342 | nid##_##keylen##_##mode,blocksize, \ | |
2343 | (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE||EVP_CIPH_##MODE##_MODE==EVP_CIPH_SIV_MODE ? 2 : 1) * keylen / 8, \ | |
2344 | ivlen, \ | |
2345 | flags | EVP_CIPH_##MODE##_MODE, \ | |
c39352e4 | 2346 | EVP_ORIG_GLOBAL, \ |
dd6b2706 P |
2347 | aes_##mode##_init_key, \ |
2348 | aes_##mode##_cipher, \ | |
2349 | aes_##mode##_cleanup, \ | |
2350 | sizeof(EVP_AES_##MODE##_CTX), \ | |
2351 | NULL, \ | |
2352 | NULL, \ | |
2353 | aes_##mode##_ctrl, \ | |
2354 | NULL \ | |
2355 | }; \ | |
2356 | const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ | |
2357 | { \ | |
2358 | return S390X_aes_##keylen##_##mode##_CAPABLE ? \ | |
2359 | &s390x_aes_##keylen##_##mode : &aes_##keylen##_##mode; \ | |
96530eea PS |
2360 | } |
2361 | ||
5158c763 | 2362 | #else |
17f121de | 2363 | |
5158c763 | 2364 | # define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \ |
17f121de | 2365 | static const EVP_CIPHER aes_##keylen##_##mode = { \ |
0f113f3e MC |
2366 | nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \ |
2367 | flags|EVP_CIPH_##MODE##_MODE, \ | |
f6c95e46 | 2368 | EVP_ORIG_GLOBAL, \ |
0f113f3e MC |
2369 | aes_init_key, \ |
2370 | aes_##mode##_cipher, \ | |
2371 | NULL, \ | |
2372 | sizeof(EVP_AES_KEY), \ | |
2373 | NULL,NULL,NULL,NULL }; \ | |
17f121de AP |
2374 | const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ |
2375 | { return &aes_##keylen##_##mode; } | |
d1fff483 | 2376 | |
5158c763 | 2377 | # define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \ |
17f121de | 2378 | static const EVP_CIPHER aes_##keylen##_##mode = { \ |
0f113f3e | 2379 | nid##_##keylen##_##mode,blocksize, \ |
b1ceb439 TS |
2380 | (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE||EVP_CIPH_##MODE##_MODE==EVP_CIPH_SIV_MODE?2:1)*keylen/8, \ |
2381 | ivlen, \ | |
0f113f3e | 2382 | flags|EVP_CIPH_##MODE##_MODE, \ |
f6c95e46 | 2383 | EVP_ORIG_GLOBAL, \ |
0f113f3e MC |
2384 | aes_##mode##_init_key, \ |
2385 | aes_##mode##_cipher, \ | |
2386 | aes_##mode##_cleanup, \ | |
2387 | sizeof(EVP_AES_##MODE##_CTX), \ | |
2388 | NULL,NULL,aes_##mode##_ctrl,NULL }; \ | |
17f121de AP |
2389 | const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ |
2390 | { return &aes_##keylen##_##mode; } | |
9575d1a9 | 2391 | |
5158c763 | 2392 | #endif |
9575d1a9 | 2393 | |
5158c763 | 2394 | #define BLOCK_CIPHER_generic_pack(nid,keylen,flags) \ |
0f113f3e MC |
2395 | BLOCK_CIPHER_generic(nid,keylen,16,16,cbc,cbc,CBC,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \ |
2396 | BLOCK_CIPHER_generic(nid,keylen,16,0,ecb,ecb,ECB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \ | |
2397 | BLOCK_CIPHER_generic(nid,keylen,1,16,ofb128,ofb,OFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \ | |
2398 | BLOCK_CIPHER_generic(nid,keylen,1,16,cfb128,cfb,CFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \ | |
2399 | BLOCK_CIPHER_generic(nid,keylen,1,16,cfb1,cfb1,CFB,flags) \ | |
2400 | BLOCK_CIPHER_generic(nid,keylen,1,16,cfb8,cfb8,CFB,flags) \ | |
2401 | BLOCK_CIPHER_generic(nid,keylen,1,16,ctr,ctr,CTR,flags) | |
d1fff483 AP |
2402 | |
2403 | static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
2404 | const unsigned char *iv, int enc) |
2405 | { | |
2406 | int ret, mode; | |
6435f0f6 | 2407 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); |
80ce874a P |
2408 | const int keylen = EVP_CIPHER_CTX_get_key_length(ctx) * 8; |
2409 | ||
2410 | if (keylen <= 0) { | |
2411 | ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY_LENGTH); | |
2412 | return 0; | |
2413 | } | |
0f113f3e | 2414 | |
ed576acd | 2415 | mode = EVP_CIPHER_CTX_get_mode(ctx); |
0f113f3e | 2416 | if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE) |
c01a3c6d | 2417 | && !enc) { |
5158c763 | 2418 | #ifdef HWAES_CAPABLE |
0f113f3e | 2419 | if (HWAES_CAPABLE) { |
80ce874a | 2420 | ret = HWAES_set_decrypt_key(key, keylen, &dat->ks.ks); |
0f113f3e MC |
2421 | dat->block = (block128_f) HWAES_decrypt; |
2422 | dat->stream.cbc = NULL; | |
5158c763 | 2423 | # ifdef HWAES_cbc_encrypt |
0f113f3e MC |
2424 | if (mode == EVP_CIPH_CBC_MODE) |
2425 | dat->stream.cbc = (cbc128_f) HWAES_cbc_encrypt; | |
0f113f3e | 2426 | # endif |
5158c763 MC |
2427 | } else |
2428 | #endif | |
2429 | #ifdef BSAES_CAPABLE | |
0f113f3e | 2430 | if (BSAES_CAPABLE && mode == EVP_CIPH_CBC_MODE) { |
80ce874a | 2431 | ret = AES_set_decrypt_key(key, keylen, &dat->ks.ks); |
0f113f3e | 2432 | dat->block = (block128_f) AES_decrypt; |
3675334e | 2433 | dat->stream.cbc = (cbc128_f) ossl_bsaes_cbc_encrypt; |
0f113f3e | 2434 | } else |
5158c763 MC |
2435 | #endif |
2436 | #ifdef VPAES_CAPABLE | |
0f113f3e | 2437 | if (VPAES_CAPABLE) { |
80ce874a | 2438 | ret = vpaes_set_decrypt_key(key, keylen, &dat->ks.ks); |
0f113f3e MC |
2439 | dat->block = (block128_f) vpaes_decrypt; |
2440 | dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? | |
2441 | (cbc128_f) vpaes_cbc_encrypt : NULL; | |
2442 | } else | |
5158c763 | 2443 | #endif |
0f113f3e | 2444 | { |
80ce874a | 2445 | ret = AES_set_decrypt_key(key, keylen, &dat->ks.ks); |
0f113f3e MC |
2446 | dat->block = (block128_f) AES_decrypt; |
2447 | dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? | |
2448 | (cbc128_f) AES_cbc_encrypt : NULL; | |
c01a3c6d | 2449 | } |
0f113f3e | 2450 | } else |
5158c763 | 2451 | #ifdef HWAES_CAPABLE |
0f113f3e | 2452 | if (HWAES_CAPABLE) { |
80ce874a | 2453 | ret = HWAES_set_encrypt_key(key, keylen, &dat->ks.ks); |
0f113f3e MC |
2454 | dat->block = (block128_f) HWAES_encrypt; |
2455 | dat->stream.cbc = NULL; | |
5158c763 | 2456 | # ifdef HWAES_cbc_encrypt |
0f113f3e MC |
2457 | if (mode == EVP_CIPH_CBC_MODE) |
2458 | dat->stream.cbc = (cbc128_f) HWAES_cbc_encrypt; | |
2459 | else | |
5158c763 MC |
2460 | # endif |
2461 | # ifdef HWAES_ctr32_encrypt_blocks | |
0f113f3e MC |
2462 | if (mode == EVP_CIPH_CTR_MODE) |
2463 | dat->stream.ctr = (ctr128_f) HWAES_ctr32_encrypt_blocks; | |
2464 | else | |
5158c763 | 2465 | # endif |
0f113f3e MC |
2466 | (void)0; /* terminate potentially open 'else' */ |
2467 | } else | |
5158c763 MC |
2468 | #endif |
2469 | #ifdef BSAES_CAPABLE | |
0f113f3e | 2470 | if (BSAES_CAPABLE && mode == EVP_CIPH_CTR_MODE) { |
80ce874a | 2471 | ret = AES_set_encrypt_key(key, keylen, &dat->ks.ks); |
0f113f3e | 2472 | dat->block = (block128_f) AES_encrypt; |
3675334e | 2473 | dat->stream.ctr = (ctr128_f) ossl_bsaes_ctr32_encrypt_blocks; |
0f113f3e | 2474 | } else |
5158c763 MC |
2475 | #endif |
2476 | #ifdef VPAES_CAPABLE | |
0f113f3e | 2477 | if (VPAES_CAPABLE) { |
80ce874a | 2478 | ret = vpaes_set_encrypt_key(key, keylen, &dat->ks.ks); |
0f113f3e MC |
2479 | dat->block = (block128_f) vpaes_encrypt; |
2480 | dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? | |
2481 | (cbc128_f) vpaes_cbc_encrypt : NULL; | |
2482 | } else | |
5158c763 | 2483 | #endif |
0f113f3e | 2484 | { |
80ce874a | 2485 | ret = AES_set_encrypt_key(key, keylen, &dat->ks.ks); |
0f113f3e MC |
2486 | dat->block = (block128_f) AES_encrypt; |
2487 | dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? | |
2488 | (cbc128_f) AES_cbc_encrypt : NULL; | |
5158c763 | 2489 | #ifdef AES_CTR_ASM |
0f113f3e MC |
2490 | if (mode == EVP_CIPH_CTR_MODE) |
2491 | dat->stream.ctr = (ctr128_f) AES_ctr32_encrypt; | |
5158c763 | 2492 | #endif |
0f113f3e | 2493 | } |
d1fff483 | 2494 | |
0f113f3e | 2495 | if (ret < 0) { |
9311d0c4 | 2496 | ERR_raise(ERR_LIB_EVP, EVP_R_AES_KEY_SETUP_FAILED); |
0f113f3e MC |
2497 | return 0; |
2498 | } | |
d1fff483 | 2499 | |
0f113f3e MC |
2500 | return 1; |
2501 | } | |
d1fff483 | 2502 | |
0f113f3e MC |
2503 | static int aes_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
2504 | const unsigned char *in, size_t len) | |
17f121de | 2505 | { |
6435f0f6 | 2506 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); |
8ca28da0 | 2507 | |
0f113f3e | 2508 | if (dat->stream.cbc) |
9197c226 | 2509 | (*dat->stream.cbc) (in, out, len, &dat->ks, ctx->iv, |
ed576acd TM |
2510 | EVP_CIPHER_CTX_is_encrypting(ctx)); |
2511 | else if (EVP_CIPHER_CTX_is_encrypting(ctx)) | |
9197c226 BK |
2512 | CRYPTO_cbc128_encrypt(in, out, len, &dat->ks, ctx->iv, |
2513 | dat->block); | |
0f113f3e | 2514 | else |
6435f0f6 | 2515 | CRYPTO_cbc128_decrypt(in, out, len, &dat->ks, |
9197c226 | 2516 | ctx->iv, dat->block); |
17f121de | 2517 | |
0f113f3e | 2518 | return 1; |
17f121de AP |
2519 | } |
2520 | ||
0f113f3e MC |
2521 | static int aes_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
2522 | const unsigned char *in, size_t len) | |
17f121de | 2523 | { |
ed576acd | 2524 | size_t bl = EVP_CIPHER_CTX_get_block_size(ctx); |
0f113f3e | 2525 | size_t i; |
6435f0f6 | 2526 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); |
17f121de | 2527 | |
0f113f3e MC |
2528 | if (len < bl) |
2529 | return 1; | |
17f121de | 2530 | |
0f113f3e MC |
2531 | for (i = 0, len -= bl; i <= len; i += bl) |
2532 | (*dat->block) (in + i, out + i, &dat->ks); | |
17f121de | 2533 | |
0f113f3e | 2534 | return 1; |
17f121de | 2535 | } |
deb2c1a1 | 2536 | |
0f113f3e MC |
2537 | static int aes_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
2538 | const unsigned char *in, size_t len) | |
17f121de | 2539 | { |
6435f0f6 | 2540 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); |
8ca28da0 | 2541 | |
ed576acd | 2542 | int num = EVP_CIPHER_CTX_get_num(ctx); |
0f113f3e | 2543 | CRYPTO_ofb128_encrypt(in, out, len, &dat->ks, |
9197c226 | 2544 | ctx->iv, &num, dat->block); |
6435f0f6 | 2545 | EVP_CIPHER_CTX_set_num(ctx, num); |
0f113f3e | 2546 | return 1; |
17f121de | 2547 | } |
deb2c1a1 | 2548 | |
0f113f3e MC |
2549 | static int aes_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
2550 | const unsigned char *in, size_t len) | |
17f121de | 2551 | { |
6435f0f6 | 2552 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); |
8ca28da0 | 2553 | |
ed576acd | 2554 | int num = EVP_CIPHER_CTX_get_num(ctx); |
0f113f3e | 2555 | CRYPTO_cfb128_encrypt(in, out, len, &dat->ks, |
9197c226 | 2556 | ctx->iv, &num, |
ed576acd | 2557 | EVP_CIPHER_CTX_is_encrypting(ctx), dat->block); |
6435f0f6 | 2558 | EVP_CIPHER_CTX_set_num(ctx, num); |
0f113f3e | 2559 | return 1; |
17f121de AP |
2560 | } |
2561 | ||
0f113f3e MC |
2562 | static int aes_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
2563 | const unsigned char *in, size_t len) | |
17f121de | 2564 | { |
6435f0f6 | 2565 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); |
8ca28da0 | 2566 | |
ed576acd | 2567 | int num = EVP_CIPHER_CTX_get_num(ctx); |
0f113f3e | 2568 | CRYPTO_cfb128_8_encrypt(in, out, len, &dat->ks, |
9197c226 | 2569 | ctx->iv, &num, |
ed576acd | 2570 | EVP_CIPHER_CTX_is_encrypting(ctx), dat->block); |
6435f0f6 | 2571 | EVP_CIPHER_CTX_set_num(ctx, num); |
0f113f3e | 2572 | return 1; |
17f121de | 2573 | } |
8d1ebe0b | 2574 | |
0f113f3e MC |
2575 | static int aes_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
2576 | const unsigned char *in, size_t len) | |
17f121de | 2577 | { |
6435f0f6 | 2578 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); |
0f113f3e | 2579 | |
6435f0f6 | 2580 | if (EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS)) { |
ed576acd | 2581 | int num = EVP_CIPHER_CTX_get_num(ctx); |
0f113f3e | 2582 | CRYPTO_cfb128_1_encrypt(in, out, len, &dat->ks, |
9197c226 | 2583 | ctx->iv, &num, |
ed576acd | 2584 | EVP_CIPHER_CTX_is_encrypting(ctx), dat->block); |
6435f0f6 | 2585 | EVP_CIPHER_CTX_set_num(ctx, num); |
0f113f3e MC |
2586 | return 1; |
2587 | } | |
2588 | ||
2589 | while (len >= MAXBITCHUNK) { | |
ed576acd | 2590 | int num = EVP_CIPHER_CTX_get_num(ctx); |
0f113f3e | 2591 | CRYPTO_cfb128_1_encrypt(in, out, MAXBITCHUNK * 8, &dat->ks, |
9197c226 | 2592 | ctx->iv, &num, |
ed576acd | 2593 | EVP_CIPHER_CTX_is_encrypting(ctx), dat->block); |
6435f0f6 | 2594 | EVP_CIPHER_CTX_set_num(ctx, num); |
0f113f3e | 2595 | len -= MAXBITCHUNK; |
604e591e BE |
2596 | out += MAXBITCHUNK; |
2597 | in += MAXBITCHUNK; | |
0f113f3e | 2598 | } |
6435f0f6 | 2599 | if (len) { |
ed576acd | 2600 | int num = EVP_CIPHER_CTX_get_num(ctx); |
0f113f3e | 2601 | CRYPTO_cfb128_1_encrypt(in, out, len * 8, &dat->ks, |
9197c226 | 2602 | ctx->iv, &num, |
ed576acd | 2603 | EVP_CIPHER_CTX_is_encrypting(ctx), dat->block); |
6435f0f6 RL |
2604 | EVP_CIPHER_CTX_set_num(ctx, num); |
2605 | } | |
0f113f3e MC |
2606 | |
2607 | return 1; | |
17f121de | 2608 | } |
8d1ebe0b | 2609 | |
0f113f3e MC |
2610 | static int aes_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
2611 | const unsigned char *in, size_t len) | |
d976f992 | 2612 | { |
042f8f70 P |
2613 | int n = EVP_CIPHER_CTX_get_num(ctx); |
2614 | unsigned int num; | |
6435f0f6 | 2615 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); |
0f113f3e | 2616 | |
042f8f70 P |
2617 | if (n < 0) |
2618 | return 0; | |
2619 | num = (unsigned int)n; | |
2620 | ||
0f113f3e MC |
2621 | if (dat->stream.ctr) |
2622 | CRYPTO_ctr128_encrypt_ctr32(in, out, len, &dat->ks, | |
9197c226 | 2623 | ctx->iv, |
6435f0f6 RL |
2624 | EVP_CIPHER_CTX_buf_noconst(ctx), |
2625 | &num, dat->stream.ctr); | |
0f113f3e MC |
2626 | else |
2627 | CRYPTO_ctr128_encrypt(in, out, len, &dat->ks, | |
9197c226 | 2628 | ctx->iv, |
6435f0f6 RL |
2629 | EVP_CIPHER_CTX_buf_noconst(ctx), &num, |
2630 | dat->block); | |
2631 | EVP_CIPHER_CTX_set_num(ctx, num); | |
0f113f3e | 2632 | return 1; |
d976f992 AP |
2633 | } |
2634 | ||
0f113f3e MC |
2635 | BLOCK_CIPHER_generic_pack(NID_aes, 128, 0) |
2636 | BLOCK_CIPHER_generic_pack(NID_aes, 192, 0) | |
2637 | BLOCK_CIPHER_generic_pack(NID_aes, 256, 0) | |
bdaa5415 DSH |
2638 | |
2639 | static int aes_gcm_cleanup(EVP_CIPHER_CTX *c) | |
0f113f3e | 2640 | { |
6435f0f6 | 2641 | EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,c); |
273a0218 BE |
2642 | if (gctx == NULL) |
2643 | return 0; | |
0f113f3e | 2644 | OPENSSL_cleanse(&gctx->gcm, sizeof(gctx->gcm)); |
9197c226 | 2645 | if (gctx->iv != c->iv) |
0f113f3e MC |
2646 | OPENSSL_free(gctx->iv); |
2647 | return 1; | |
2648 | } | |
bdaa5415 DSH |
2649 | |
2650 | static int aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) | |
0f113f3e | 2651 | { |
6435f0f6 | 2652 | EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,c); |
0f113f3e MC |
2653 | switch (type) { |
2654 | case EVP_CTRL_INIT: | |
2655 | gctx->key_set = 0; | |
2656 | gctx->iv_set = 0; | |
ed576acd | 2657 | gctx->ivlen = EVP_CIPHER_get_iv_length(c->cipher); |
c5307d9c | 2658 | gctx->iv = c->iv; |
0f113f3e MC |
2659 | gctx->taglen = -1; |
2660 | gctx->iv_gen = 0; | |
2661 | gctx->tls_aad_len = -1; | |
2662 | return 1; | |
2663 | ||
7dddf2fc SL |
2664 | case EVP_CTRL_GET_IVLEN: |
2665 | *(int *)ptr = gctx->ivlen; | |
2666 | return 1; | |
2667 | ||
e640fa02 | 2668 | case EVP_CTRL_AEAD_SET_IVLEN: |
0f113f3e MC |
2669 | if (arg <= 0) |
2670 | return 0; | |
2671 | /* Allocate memory for IV if needed */ | |
2672 | if ((arg > EVP_MAX_IV_LENGTH) && (arg > gctx->ivlen)) { | |
c5307d9c | 2673 | if (gctx->iv != c->iv) |
0f113f3e | 2674 | OPENSSL_free(gctx->iv); |
e077455e | 2675 | if ((gctx->iv = OPENSSL_malloc(arg)) == NULL) |
0f113f3e MC |
2676 | return 0; |
2677 | } | |
2678 | gctx->ivlen = arg; | |
2679 | return 1; | |
2680 | ||
e640fa02 | 2681 | case EVP_CTRL_AEAD_SET_TAG: |
c5307d9c | 2682 | if (arg <= 0 || arg > 16 || c->encrypt) |
0f113f3e | 2683 | return 0; |
c5307d9c | 2684 | memcpy(c->buf, ptr, arg); |
0f113f3e MC |
2685 | gctx->taglen = arg; |
2686 | return 1; | |
2687 | ||
e640fa02 | 2688 | case EVP_CTRL_AEAD_GET_TAG: |
c5307d9c | 2689 | if (arg <= 0 || arg > 16 || !c->encrypt |
6435f0f6 | 2690 | || gctx->taglen < 0) |
0f113f3e | 2691 | return 0; |
c5307d9c | 2692 | memcpy(ptr, c->buf, arg); |
0f113f3e MC |
2693 | return 1; |
2694 | ||
2695 | case EVP_CTRL_GCM_SET_IV_FIXED: | |
2696 | /* Special case: -1 length restores whole IV */ | |
2697 | if (arg == -1) { | |
2698 | memcpy(gctx->iv, ptr, gctx->ivlen); | |
2699 | gctx->iv_gen = 1; | |
2700 | return 1; | |
2701 | } | |
2702 | /* | |
2703 | * Fixed field must be at least 4 bytes and invocation field at least | |
2704 | * 8. | |
2705 | */ | |
2706 | if ((arg < 4) || (gctx->ivlen - arg) < 8) | |
2707 | return 0; | |
2708 | if (arg) | |
2709 | memcpy(gctx->iv, ptr, arg); | |
c5307d9c | 2710 | if (c->encrypt && RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0) |
16cfc2c9 | 2711 | return 0; |
0f113f3e MC |
2712 | gctx->iv_gen = 1; |
2713 | return 1; | |
2714 | ||
2715 | case EVP_CTRL_GCM_IV_GEN: | |
2716 | if (gctx->iv_gen == 0 || gctx->key_set == 0) | |
2717 | return 0; | |
2718 | CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen); | |
2719 | if (arg <= 0 || arg > gctx->ivlen) | |
2720 | arg = gctx->ivlen; | |
2721 | memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg); | |
2722 | /* | |
2723 | * Invocation field will be at least 8 bytes in size and so no need | |
2724 | * to check wrap around or increment more than last 8 bytes. | |
2725 | */ | |
2726 | ctr64_inc(gctx->iv + gctx->ivlen - 8); | |
2727 | gctx->iv_set = 1; | |
2728 | return 1; | |
2729 | ||
2730 | case EVP_CTRL_GCM_SET_IV_INV: | |
c5307d9c | 2731 | if (gctx->iv_gen == 0 || gctx->key_set == 0 || c->encrypt) |
0f113f3e MC |
2732 | return 0; |
2733 | memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg); | |
2734 | CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen); | |
2735 | gctx->iv_set = 1; | |
2736 | return 1; | |
2737 | ||
2738 | case EVP_CTRL_AEAD_TLS1_AAD: | |
2739 | /* Save the AAD for later use */ | |
c8269881 | 2740 | if (arg != EVP_AEAD_TLS1_AAD_LEN) |
0f113f3e | 2741 | return 0; |
c5307d9c | 2742 | memcpy(c->buf, ptr, arg); |
0f113f3e | 2743 | gctx->tls_aad_len = arg; |
d6b34570 | 2744 | gctx->tls_enc_records = 0; |
0f113f3e | 2745 | { |
c5307d9c | 2746 | unsigned int len = c->buf[arg - 2] << 8 | c->buf[arg - 1]; |
0f113f3e | 2747 | /* Correct length for explicit IV */ |
2198b3a5 AP |
2748 | if (len < EVP_GCM_TLS_EXPLICIT_IV_LEN) |
2749 | return 0; | |
0f113f3e MC |
2750 | len -= EVP_GCM_TLS_EXPLICIT_IV_LEN; |
2751 | /* If decrypting correct for tag too */ | |
c5307d9c | 2752 | if (!c->encrypt) { |
2198b3a5 AP |
2753 | if (len < EVP_GCM_TLS_TAG_LEN) |
2754 | return 0; | |
0f113f3e | 2755 | len -= EVP_GCM_TLS_TAG_LEN; |
2198b3a5 | 2756 | } |
c5307d9c AP |
2757 | c->buf[arg - 2] = len >> 8; |
2758 | c->buf[arg - 1] = len & 0xff; | |
0f113f3e MC |
2759 | } |
2760 | /* Extra padding: tag appended to record */ | |
2761 | return EVP_GCM_TLS_TAG_LEN; | |
2762 | ||
2763 | case EVP_CTRL_COPY: | |
2764 | { | |
2765 | EVP_CIPHER_CTX *out = ptr; | |
6435f0f6 | 2766 | EVP_AES_GCM_CTX *gctx_out = EVP_C_DATA(EVP_AES_GCM_CTX,out); |
0f113f3e MC |
2767 | if (gctx->gcm.key) { |
2768 | if (gctx->gcm.key != &gctx->ks) | |
2769 | return 0; | |
2770 | gctx_out->gcm.key = &gctx_out->ks; | |
2771 | } | |
c5307d9c AP |
2772 | if (gctx->iv == c->iv) |
2773 | gctx_out->iv = out->iv; | |
0f113f3e | 2774 | else { |
e077455e | 2775 | if ((gctx_out->iv = OPENSSL_malloc(gctx->ivlen)) == NULL) |
0f113f3e MC |
2776 | return 0; |
2777 | memcpy(gctx_out->iv, gctx->iv, gctx->ivlen); | |
2778 | } | |
2779 | return 1; | |
2780 | } | |
2781 | ||
2782 | default: | |
2783 | return -1; | |
2784 | ||
2785 | } | |
2786 | } | |
bdaa5415 DSH |
2787 | |
2788 | static int aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
2789 | const unsigned char *iv, int enc) |
2790 | { | |
6435f0f6 | 2791 | EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,ctx); |
80ce874a P |
2792 | |
2793 | if (iv == NULL && key == NULL) | |
0f113f3e | 2794 | return 1; |
80ce874a P |
2795 | |
2796 | if (key != NULL) { | |
2797 | const int keylen = EVP_CIPHER_CTX_get_key_length(ctx) * 8; | |
2798 | ||
2799 | if (keylen <= 0) { | |
2800 | ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY_LENGTH); | |
2801 | return 0; | |
2802 | } | |
0f113f3e | 2803 | do { |
5158c763 | 2804 | #ifdef HWAES_CAPABLE |
0f113f3e | 2805 | if (HWAES_CAPABLE) { |
80ce874a | 2806 | HWAES_set_encrypt_key(key, keylen, &gctx->ks.ks); |
0f113f3e MC |
2807 | CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, |
2808 | (block128_f) HWAES_encrypt); | |
5158c763 | 2809 | # ifdef HWAES_ctr32_encrypt_blocks |
0f113f3e | 2810 | gctx->ctr = (ctr128_f) HWAES_ctr32_encrypt_blocks; |
5158c763 | 2811 | # else |
0f113f3e | 2812 | gctx->ctr = NULL; |
5158c763 | 2813 | # endif |
0f113f3e MC |
2814 | break; |
2815 | } else | |
5158c763 MC |
2816 | #endif |
2817 | #ifdef BSAES_CAPABLE | |
0f113f3e | 2818 | if (BSAES_CAPABLE) { |
80ce874a | 2819 | AES_set_encrypt_key(key, keylen, &gctx->ks.ks); |
0f113f3e MC |
2820 | CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, |
2821 | (block128_f) AES_encrypt); | |
3675334e | 2822 | gctx->ctr = (ctr128_f) ossl_bsaes_ctr32_encrypt_blocks; |
0f113f3e MC |
2823 | break; |
2824 | } else | |
5158c763 MC |
2825 | #endif |
2826 | #ifdef VPAES_CAPABLE | |
0f113f3e | 2827 | if (VPAES_CAPABLE) { |
80ce874a | 2828 | vpaes_set_encrypt_key(key, keylen, &gctx->ks.ks); |
0f113f3e MC |
2829 | CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, |
2830 | (block128_f) vpaes_encrypt); | |
2831 | gctx->ctr = NULL; | |
2832 | break; | |
2833 | } else | |
5158c763 | 2834 | #endif |
0f113f3e MC |
2835 | (void)0; /* terminate potentially open 'else' */ |
2836 | ||
80ce874a | 2837 | AES_set_encrypt_key(key, keylen, &gctx->ks.ks); |
0f113f3e MC |
2838 | CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, |
2839 | (block128_f) AES_encrypt); | |
5158c763 | 2840 | #ifdef AES_CTR_ASM |
0f113f3e | 2841 | gctx->ctr = (ctr128_f) AES_ctr32_encrypt; |
5158c763 | 2842 | #else |
0f113f3e | 2843 | gctx->ctr = NULL; |
5158c763 | 2844 | #endif |
0f113f3e MC |
2845 | } while (0); |
2846 | ||
2847 | /* | |
2848 | * If we have an iv can set it directly, otherwise use saved IV. | |
2849 | */ | |
2850 | if (iv == NULL && gctx->iv_set) | |
2851 | iv = gctx->iv; | |
2852 | if (iv) { | |
2853 | CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); | |
2854 | gctx->iv_set = 1; | |
2855 | } | |
2856 | gctx->key_set = 1; | |
2857 | } else { | |
2858 | /* If key set use IV, otherwise copy */ | |
2859 | if (gctx->key_set) | |
2860 | CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); | |
2861 | else | |
2862 | memcpy(gctx->iv, iv, gctx->ivlen); | |
2863 | gctx->iv_set = 1; | |
2864 | gctx->iv_gen = 0; | |
2865 | } | |
2866 | return 1; | |
2867 | } | |
2868 | ||
2869 | /* | |
2870 | * Handle TLS GCM packet format. This consists of the last portion of the IV | |
28dd49fa DSH |
2871 | * followed by the payload and finally the tag. On encrypt generate IV, |
2872 | * encrypt payload and write the tag. On verify retrieve IV, decrypt payload | |
2873 | * and verify tag. | |
2874 | */ | |
2875 | ||
2876 | static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
0f113f3e MC |
2877 | const unsigned char *in, size_t len) |
2878 | { | |
6435f0f6 | 2879 | EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,ctx); |
0f113f3e MC |
2880 | int rv = -1; |
2881 | /* Encrypt/decrypt must be performed in place */ | |
2882 | if (out != in | |
2883 | || len < (EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN)) | |
2884 | return -1; | |
df443918 | 2885 | |
d6b34570 P |
2886 | /* |
2887 | * Check for too many keys as per FIPS 140-2 IG A.5 "Key/IV Pair Uniqueness | |
2888 | * Requirements from SP 800-38D". The requirements is for one party to the | |
2889 | * communication to fail after 2^64 - 1 keys. We do this on the encrypting | |
2890 | * side only. | |
2891 | */ | |
b134300a | 2892 | if (EVP_CIPHER_CTX_is_encrypting(ctx) && ++gctx->tls_enc_records == 0) { |
9311d0c4 | 2893 | ERR_raise(ERR_LIB_EVP, EVP_R_TOO_MANY_RECORDS); |
d6b34570 P |
2894 | goto err; |
2895 | } | |
2896 | ||
0f113f3e MC |
2897 | /* |
2898 | * Set IV from start of buffer or generate IV and write to start of | |
2899 | * buffer. | |
2900 | */ | |
b134300a TZ |
2901 | if (EVP_CIPHER_CTX_ctrl(ctx, |
2902 | EVP_CIPHER_CTX_is_encrypting(ctx) ? | |
2903 | EVP_CTRL_GCM_IV_GEN : EVP_CTRL_GCM_SET_IV_INV, | |
0f113f3e MC |
2904 | EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0) |
2905 | goto err; | |
2906 | /* Use saved AAD */ | |
b134300a TZ |
2907 | if (CRYPTO_gcm128_aad(&gctx->gcm, EVP_CIPHER_CTX_buf_noconst(ctx), |
2908 | gctx->tls_aad_len)) | |
0f113f3e MC |
2909 | goto err; |
2910 | /* Fix buffer and length to point to payload */ | |
2911 | in += EVP_GCM_TLS_EXPLICIT_IV_LEN; | |
2912 | out += EVP_GCM_TLS_EXPLICIT_IV_LEN; | |
2913 | len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN; | |
b134300a | 2914 | if (EVP_CIPHER_CTX_is_encrypting(ctx)) { |
0f113f3e MC |
2915 | /* Encrypt payload */ |
2916 | if (gctx->ctr) { | |
2917 | size_t bulk = 0; | |
5158c763 | 2918 | #if defined(AES_GCM_ASM) |
0f113f3e MC |
2919 | if (len >= 32 && AES_GCM_ASM(gctx)) { |
2920 | if (CRYPTO_gcm128_encrypt(&gctx->gcm, NULL, NULL, 0)) | |
2921 | return -1; | |
2922 | ||
2923 | bulk = AES_gcm_encrypt(in, out, len, | |
2924 | gctx->gcm.key, | |
2925 | gctx->gcm.Yi.c, gctx->gcm.Xi.u); | |
2926 | gctx->gcm.len.u[1] += bulk; | |
2927 | } | |
5158c763 | 2928 | #endif |
0f113f3e MC |
2929 | if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm, |
2930 | in + bulk, | |
2931 | out + bulk, | |
2932 | len - bulk, gctx->ctr)) | |
2933 | goto err; | |
2934 | } else { | |
2935 | size_t bulk = 0; | |
5158c763 | 2936 | #if defined(AES_GCM_ASM2) |
0f113f3e MC |
2937 | if (len >= 32 && AES_GCM_ASM2(gctx)) { |
2938 | if (CRYPTO_gcm128_encrypt(&gctx->gcm, NULL, NULL, 0)) | |
2939 | return -1; | |
2940 | ||
2941 | bulk = AES_gcm_encrypt(in, out, len, | |
2942 | gctx->gcm.key, | |
2943 | gctx->gcm.Yi.c, gctx->gcm.Xi.u); | |
2944 | gctx->gcm.len.u[1] += bulk; | |
2945 | } | |
5158c763 | 2946 | #endif |
0f113f3e MC |
2947 | if (CRYPTO_gcm128_encrypt(&gctx->gcm, |
2948 | in + bulk, out + bulk, len - bulk)) | |
2949 | goto err; | |
2950 | } | |
2951 | out += len; | |
2952 | /* Finally write tag */ | |
2953 | CRYPTO_gcm128_tag(&gctx->gcm, out, EVP_GCM_TLS_TAG_LEN); | |
2954 | rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN; | |
2955 | } else { | |
2956 | /* Decrypt */ | |
2957 | if (gctx->ctr) { | |
2958 | size_t bulk = 0; | |
5158c763 | 2959 | #if defined(AES_GCM_ASM) |
0f113f3e MC |
2960 | if (len >= 16 && AES_GCM_ASM(gctx)) { |
2961 | if (CRYPTO_gcm128_decrypt(&gctx->gcm, NULL, NULL, 0)) | |
2962 | return -1; | |
2963 | ||
2964 | bulk = AES_gcm_decrypt(in, out, len, | |
2965 | gctx->gcm.key, | |
2966 | gctx->gcm.Yi.c, gctx->gcm.Xi.u); | |
2967 | gctx->gcm.len.u[1] += bulk; | |
2968 | } | |
5158c763 | 2969 | #endif |
0f113f3e MC |
2970 | if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm, |
2971 | in + bulk, | |
2972 | out + bulk, | |
2973 | len - bulk, gctx->ctr)) | |
2974 | goto err; | |
2975 | } else { | |
2976 | size_t bulk = 0; | |
5158c763 | 2977 | #if defined(AES_GCM_ASM2) |
0f113f3e MC |
2978 | if (len >= 16 && AES_GCM_ASM2(gctx)) { |
2979 | if (CRYPTO_gcm128_decrypt(&gctx->gcm, NULL, NULL, 0)) | |
2980 | return -1; | |
2981 | ||
2982 | bulk = AES_gcm_decrypt(in, out, len, | |
2983 | gctx->gcm.key, | |
2984 | gctx->gcm.Yi.c, gctx->gcm.Xi.u); | |
2985 | gctx->gcm.len.u[1] += bulk; | |
2986 | } | |
5158c763 | 2987 | #endif |
0f113f3e MC |
2988 | if (CRYPTO_gcm128_decrypt(&gctx->gcm, |
2989 | in + bulk, out + bulk, len - bulk)) | |
2990 | goto err; | |
2991 | } | |
2992 | /* Retrieve tag */ | |
b134300a TZ |
2993 | CRYPTO_gcm128_tag(&gctx->gcm, EVP_CIPHER_CTX_buf_noconst(ctx), |
2994 | EVP_GCM_TLS_TAG_LEN); | |
0f113f3e | 2995 | /* If tag mismatch wipe buffer */ |
b134300a TZ |
2996 | if (CRYPTO_memcmp(EVP_CIPHER_CTX_buf_noconst(ctx), in + len, |
2997 | EVP_GCM_TLS_TAG_LEN)) { | |
0f113f3e MC |
2998 | OPENSSL_cleanse(out, len); |
2999 | goto err; | |
3000 | } | |
3001 | rv = len; | |
3002 | } | |
3003 | ||
3004 | err: | |
3005 | gctx->iv_set = 0; | |
3006 | gctx->tls_aad_len = -1; | |
3007 | return rv; | |
3008 | } | |
28dd49fa | 3009 | |
f844f9eb | 3010 | #ifdef FIPS_MODULE |
bcf082d1 SL |
3011 | /* |
3012 | * See SP800-38D (GCM) Section 8 "Uniqueness requirement on IVS and keys" | |
3013 | * | |
3014 | * See also 8.2.2 RBG-based construction. | |
3015 | * Random construction consists of a free field (which can be NULL) and a | |
3016 | * random field which will use a DRBG that can return at least 96 bits of | |
3017 | * entropy strength. (The DRBG must be seeded by the FIPS module). | |
3018 | */ | |
3019 | static int aes_gcm_iv_generate(EVP_AES_GCM_CTX *gctx, int offset) | |
3020 | { | |
3021 | int sz = gctx->ivlen - offset; | |
3022 | ||
3023 | /* Must be at least 96 bits */ | |
3024 | if (sz <= 0 || gctx->ivlen < 12) | |
3025 | return 0; | |
3026 | ||
3027 | /* Use DRBG to generate random iv */ | |
3028 | if (RAND_bytes(gctx->iv + offset, sz) <= 0) | |
3029 | return 0; | |
3030 | return 1; | |
3031 | } | |
f844f9eb | 3032 | #endif /* FIPS_MODULE */ |
bcf082d1 | 3033 | |
17f121de | 3034 | static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e MC |
3035 | const unsigned char *in, size_t len) |
3036 | { | |
6435f0f6 | 3037 | EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,ctx); |
bcf082d1 | 3038 | |
0f113f3e MC |
3039 | /* If not set up, return error */ |
3040 | if (!gctx->key_set) | |
3041 | return -1; | |
3042 | ||
3043 | if (gctx->tls_aad_len >= 0) | |
3044 | return aes_gcm_tls_cipher(ctx, out, in, len); | |
3045 | ||
f844f9eb | 3046 | #ifdef FIPS_MODULE |
bcf082d1 SL |
3047 | /* |
3048 | * FIPS requires generation of AES-GCM IV's inside the FIPS module. | |
3049 | * The IV can still be set externally (the security policy will state that | |
3050 | * this is not FIPS compliant). There are some applications | |
3051 | * where setting the IV externally is the only option available. | |
3052 | */ | |
3053 | if (!gctx->iv_set) { | |
b134300a | 3054 | if (!EVP_CIPHER_CTX_is_encrypting(ctx) || !aes_gcm_iv_generate(gctx, 0)) |
bcf082d1 SL |
3055 | return -1; |
3056 | CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen); | |
3057 | gctx->iv_set = 1; | |
3058 | gctx->iv_gen_rand = 1; | |
3059 | } | |
3060 | #else | |
0f113f3e MC |
3061 | if (!gctx->iv_set) |
3062 | return -1; | |
f844f9eb | 3063 | #endif /* FIPS_MODULE */ |
bcf082d1 | 3064 | |
0f113f3e MC |
3065 | if (in) { |
3066 | if (out == NULL) { | |
3067 | if (CRYPTO_gcm128_aad(&gctx->gcm, in, len)) | |
3068 | return -1; | |
b134300a | 3069 | } else if (EVP_CIPHER_CTX_is_encrypting(ctx)) { |
0f113f3e MC |
3070 | if (gctx->ctr) { |
3071 | size_t bulk = 0; | |
5158c763 | 3072 | #if defined(AES_GCM_ASM) |
0f113f3e MC |
3073 | if (len >= 32 && AES_GCM_ASM(gctx)) { |
3074 | size_t res = (16 - gctx->gcm.mres) % 16; | |
3075 | ||
3076 | if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, res)) | |
3077 | return -1; | |
3078 | ||
3079 | bulk = AES_gcm_encrypt(in + res, | |
3080 | out + res, len - res, | |
3081 | gctx->gcm.key, gctx->gcm.Yi.c, | |
3082 | gctx->gcm.Xi.u); | |
3083 | gctx->gcm.len.u[1] += bulk; | |
3084 | bulk += res; | |
3085 | } | |
5158c763 | 3086 | #endif |
0f113f3e MC |
3087 | if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm, |
3088 | in + bulk, | |
3089 | out + bulk, | |
3090 | len - bulk, gctx->ctr)) | |
3091 | return -1; | |
3092 | } else { | |
3093 | size_t bulk = 0; | |
5158c763 | 3094 | #if defined(AES_GCM_ASM2) |
0f113f3e MC |
3095 | if (len >= 32 && AES_GCM_ASM2(gctx)) { |
3096 | size_t res = (16 - gctx->gcm.mres) % 16; | |
3097 | ||
3098 | if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, res)) | |
3099 | return -1; | |
3100 | ||
3101 | bulk = AES_gcm_encrypt(in + res, | |
3102 | out + res, len - res, | |
3103 | gctx->gcm.key, gctx->gcm.Yi.c, | |
3104 | gctx->gcm.Xi.u); | |
3105 | gctx->gcm.len.u[1] += bulk; | |
3106 | bulk += res; | |
3107 | } | |
5158c763 | 3108 | #endif |
0f113f3e MC |
3109 | if (CRYPTO_gcm128_encrypt(&gctx->gcm, |
3110 | in + bulk, out + bulk, len - bulk)) | |
3111 | return -1; | |
3112 | } | |
3113 | } else { | |
3114 | if (gctx->ctr) { | |
3115 | size_t bulk = 0; | |
5158c763 | 3116 | #if defined(AES_GCM_ASM) |
0f113f3e MC |
3117 | if (len >= 16 && AES_GCM_ASM(gctx)) { |
3118 | size_t res = (16 - gctx->gcm.mres) % 16; | |
3119 | ||
3120 | if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, res)) | |
3121 | return -1; | |
3122 | ||
3123 | bulk = AES_gcm_decrypt(in + res, | |
3124 | out + res, len - res, | |
3125 | gctx->gcm.key, | |
3126 | gctx->gcm.Yi.c, gctx->gcm.Xi.u); | |
3127 | gctx->gcm.len.u[1] += bulk; | |
3128 | bulk += res; | |
3129 | } | |
5158c763 | 3130 | #endif |
0f113f3e MC |
3131 | if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm, |
3132 | in + bulk, | |
3133 | out + bulk, | |
3134 | len - bulk, gctx->ctr)) | |
3135 | return -1; | |
3136 | } else { | |
3137 | size_t bulk = 0; | |
5158c763 | 3138 | #if defined(AES_GCM_ASM2) |
0f113f3e MC |
3139 | if (len >= 16 && AES_GCM_ASM2(gctx)) { |
3140 | size_t res = (16 - gctx->gcm.mres) % 16; | |
3141 | ||
3142 | if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, res)) | |
3143 | return -1; | |
3144 | ||
3145 | bulk = AES_gcm_decrypt(in + res, | |
3146 | out + res, len - res, | |
3147 | gctx->gcm.key, | |
3148 | gctx->gcm.Yi.c, gctx->gcm.Xi.u); | |
3149 | gctx->gcm.len.u[1] += bulk; | |
3150 | bulk += res; | |
3151 | } | |
5158c763 | 3152 | #endif |
0f113f3e MC |
3153 | if (CRYPTO_gcm128_decrypt(&gctx->gcm, |
3154 | in + bulk, out + bulk, len - bulk)) | |
3155 | return -1; | |
3156 | } | |
3157 | } | |
3158 | return len; | |
3159 | } else { | |
b134300a | 3160 | if (!EVP_CIPHER_CTX_is_encrypting(ctx)) { |
0f113f3e MC |
3161 | if (gctx->taglen < 0) |
3162 | return -1; | |
b134300a TZ |
3163 | if (CRYPTO_gcm128_finish(&gctx->gcm, |
3164 | EVP_CIPHER_CTX_buf_noconst(ctx), | |
3165 | gctx->taglen) != 0) | |
0f113f3e MC |
3166 | return -1; |
3167 | gctx->iv_set = 0; | |
3168 | return 0; | |
3169 | } | |
b134300a | 3170 | CRYPTO_gcm128_tag(&gctx->gcm, EVP_CIPHER_CTX_buf_noconst(ctx), 16); |
0f113f3e MC |
3171 | gctx->taglen = 16; |
3172 | /* Don't reuse the IV */ | |
3173 | gctx->iv_set = 0; | |
3174 | return 0; | |
3175 | } | |
3176 | ||
3177 | } | |
3178 | ||
5158c763 | 3179 | #define CUSTOM_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 \ |
0f113f3e MC |
3180 | | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \ |
3181 | | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT \ | |
7dddf2fc | 3182 | | EVP_CIPH_CUSTOM_COPY | EVP_CIPH_CUSTOM_IV_LENGTH) |
0f113f3e MC |
3183 | |
3184 | BLOCK_CIPHER_custom(NID_aes, 128, 1, 12, gcm, GCM, | |
3185 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) | |
1c5a4e3b | 3186 | BLOCK_CIPHER_custom(NID_aes, 192, 1, 12, gcm, GCM, |
0f113f3e | 3187 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) |
1c5a4e3b | 3188 | BLOCK_CIPHER_custom(NID_aes, 256, 1, 12, gcm, GCM, |
0f113f3e | 3189 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) |
32a2d8dd DSH |
3190 | |
3191 | static int aes_xts_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) | |
0f113f3e | 3192 | { |
2c840201 P |
3193 | EVP_AES_XTS_CTX *xctx = EVP_C_DATA(EVP_AES_XTS_CTX, c); |
3194 | ||
0f113f3e MC |
3195 | if (type == EVP_CTRL_COPY) { |
3196 | EVP_CIPHER_CTX *out = ptr; | |
6435f0f6 | 3197 | EVP_AES_XTS_CTX *xctx_out = EVP_C_DATA(EVP_AES_XTS_CTX,out); |
2c840201 | 3198 | |
0f113f3e MC |
3199 | if (xctx->xts.key1) { |
3200 | if (xctx->xts.key1 != &xctx->ks1) | |
3201 | return 0; | |
3202 | xctx_out->xts.key1 = &xctx_out->ks1; | |
3203 | } | |
3204 | if (xctx->xts.key2) { | |
3205 | if (xctx->xts.key2 != &xctx->ks2) | |
3206 | return 0; | |
3207 | xctx_out->xts.key2 = &xctx_out->ks2; | |
3208 | } | |
3209 | return 1; | |
3210 | } else if (type != EVP_CTRL_INIT) | |
3211 | return -1; | |
3212 | /* key1 and key2 are used as an indicator both key and IV are set */ | |
3213 | xctx->xts.key1 = NULL; | |
3214 | xctx->xts.key2 = NULL; | |
3215 | return 1; | |
3216 | } | |
32a2d8dd DSH |
3217 | |
3218 | static int aes_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
3219 | const unsigned char *iv, int enc) |
3220 | { | |
6435f0f6 | 3221 | EVP_AES_XTS_CTX *xctx = EVP_C_DATA(EVP_AES_XTS_CTX,ctx); |
2c840201 | 3222 | |
80ce874a | 3223 | if (iv == NULL && key == NULL) |
0f113f3e MC |
3224 | return 1; |
3225 | ||
80ce874a | 3226 | if (key != NULL) { |
0f113f3e | 3227 | do { |
3538b0f7 | 3228 | /* The key is two half length keys in reality */ |
80ce874a P |
3229 | const int keylen = EVP_CIPHER_CTX_get_key_length(ctx); |
3230 | const int bytes = keylen / 2; | |
3538b0f7 P |
3231 | const int bits = bytes * 8; |
3232 | ||
80ce874a P |
3233 | if (keylen <= 0) { |
3234 | ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY_LENGTH); | |
3235 | return 0; | |
3236 | } | |
3538b0f7 P |
3237 | /* |
3238 | * Verify that the two keys are different. | |
3239 | * | |
3240 | * This addresses the vulnerability described in Rogaway's | |
3241 | * September 2004 paper: | |
3242 | * | |
3243 | * "Efficient Instantiations of Tweakable Blockciphers and | |
3244 | * Refinements to Modes OCB and PMAC". | |
3245 | * (http://web.cs.ucdavis.edu/~rogaway/papers/offsets.pdf) | |
3246 | * | |
3247 | * FIPS 140-2 IG A.9 XTS-AES Key Generation Requirements states | |
3248 | * that: | |
3249 | * "The check for Key_1 != Key_2 shall be done at any place | |
3250 | * BEFORE using the keys in the XTS-AES algorithm to process | |
3251 | * data with them." | |
3252 | */ | |
2c840201 P |
3253 | if ((!allow_insecure_decrypt || enc) |
3254 | && CRYPTO_memcmp(key, key + bytes, bytes) == 0) { | |
9311d0c4 | 3255 | ERR_raise(ERR_LIB_EVP, EVP_R_XTS_DUPLICATED_KEYS); |
3538b0f7 P |
3256 | return 0; |
3257 | } | |
3258 | ||
5158c763 | 3259 | #ifdef AES_XTS_ASM |
0f113f3e | 3260 | xctx->stream = enc ? AES_xts_encrypt : AES_xts_decrypt; |
5158c763 | 3261 | #else |
0f113f3e | 3262 | xctx->stream = NULL; |
5158c763 | 3263 | #endif |
0f113f3e | 3264 | /* key_len is two AES keys */ |
5158c763 | 3265 | #ifdef HWAES_CAPABLE |
0f113f3e MC |
3266 | if (HWAES_CAPABLE) { |
3267 | if (enc) { | |
3538b0f7 | 3268 | HWAES_set_encrypt_key(key, bits, &xctx->ks1.ks); |
0f113f3e | 3269 | xctx->xts.block1 = (block128_f) HWAES_encrypt; |
46f047d7 AP |
3270 | # ifdef HWAES_xts_encrypt |
3271 | xctx->stream = HWAES_xts_encrypt; | |
3272 | # endif | |
0f113f3e | 3273 | } else { |
3538b0f7 | 3274 | HWAES_set_decrypt_key(key, bits, &xctx->ks1.ks); |
0f113f3e | 3275 | xctx->xts.block1 = (block128_f) HWAES_decrypt; |
46f047d7 AP |
3276 | # ifdef HWAES_xts_decrypt |
3277 | xctx->stream = HWAES_xts_decrypt; | |
3278 | #endif | |
0f113f3e MC |
3279 | } |
3280 | ||
3538b0f7 | 3281 | HWAES_set_encrypt_key(key + bytes, bits, &xctx->ks2.ks); |
0f113f3e MC |
3282 | xctx->xts.block2 = (block128_f) HWAES_encrypt; |
3283 | ||
3284 | xctx->xts.key1 = &xctx->ks1; | |
3285 | break; | |
3286 | } else | |
5158c763 MC |
3287 | #endif |
3288 | #ifdef BSAES_CAPABLE | |
0f113f3e | 3289 | if (BSAES_CAPABLE) |
3675334e | 3290 | xctx->stream = enc ? ossl_bsaes_xts_encrypt : ossl_bsaes_xts_decrypt; |
0f113f3e | 3291 | else |
5158c763 MC |
3292 | #endif |
3293 | #ifdef VPAES_CAPABLE | |
0f113f3e MC |
3294 | if (VPAES_CAPABLE) { |
3295 | if (enc) { | |
3538b0f7 | 3296 | vpaes_set_encrypt_key(key, bits, &xctx->ks1.ks); |
0f113f3e MC |
3297 | xctx->xts.block1 = (block128_f) vpaes_encrypt; |
3298 | } else { | |
3538b0f7 | 3299 | vpaes_set_decrypt_key(key, bits, &xctx->ks1.ks); |
0f113f3e MC |
3300 | xctx->xts.block1 = (block128_f) vpaes_decrypt; |
3301 | } | |
3302 | ||
3538b0f7 | 3303 | vpaes_set_encrypt_key(key + bytes, bits, &xctx->ks2.ks); |
0f113f3e MC |
3304 | xctx->xts.block2 = (block128_f) vpaes_encrypt; |
3305 | ||
3306 | xctx->xts.key1 = &xctx->ks1; | |
3307 | break; | |
3308 | } else | |
5158c763 | 3309 | #endif |
0f113f3e MC |
3310 | (void)0; /* terminate potentially open 'else' */ |
3311 | ||
3312 | if (enc) { | |
3538b0f7 | 3313 | AES_set_encrypt_key(key, bits, &xctx->ks1.ks); |
0f113f3e MC |
3314 | xctx->xts.block1 = (block128_f) AES_encrypt; |
3315 | } else { | |
3538b0f7 | 3316 | AES_set_decrypt_key(key, bits, &xctx->ks1.ks); |
0f113f3e MC |
3317 | xctx->xts.block1 = (block128_f) AES_decrypt; |
3318 | } | |
3319 | ||
3538b0f7 | 3320 | AES_set_encrypt_key(key + bytes, bits, &xctx->ks2.ks); |
0f113f3e MC |
3321 | xctx->xts.block2 = (block128_f) AES_encrypt; |
3322 | ||
3323 | xctx->xts.key1 = &xctx->ks1; | |
3324 | } while (0); | |
3538b0f7 | 3325 | } |
0f113f3e MC |
3326 | |
3327 | if (iv) { | |
3328 | xctx->xts.key2 = &xctx->ks2; | |
9197c226 | 3329 | memcpy(ctx->iv, iv, 16); |
0f113f3e MC |
3330 | } |
3331 | ||
3332 | return 1; | |
3333 | } | |
32a2d8dd | 3334 | |
17f121de | 3335 | static int aes_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e MC |
3336 | const unsigned char *in, size_t len) |
3337 | { | |
6435f0f6 | 3338 | EVP_AES_XTS_CTX *xctx = EVP_C_DATA(EVP_AES_XTS_CTX,ctx); |
95eda4f0 P |
3339 | |
3340 | if (xctx->xts.key1 == NULL | |
3341 | || xctx->xts.key2 == NULL | |
3342 | || out == NULL | |
3343 | || in == NULL | |
3344 | || len < AES_BLOCK_SIZE) | |
0f113f3e | 3345 | return 0; |
95eda4f0 | 3346 | |
5516c19b | 3347 | /* |
79c44b4e | 3348 | * Impose a limit of 2^20 blocks per data unit as specified by |
5516c19b P |
3349 | * IEEE Std 1619-2018. The earlier and obsolete IEEE Std 1619-2007 |
3350 | * indicated that this was a SHOULD NOT rather than a MUST NOT. | |
3351 | * NIST SP 800-38E mandates the same limit. | |
3352 | */ | |
3353 | if (len > XTS_MAX_BLOCKS_PER_DATA_UNIT * AES_BLOCK_SIZE) { | |
9311d0c4 | 3354 | ERR_raise(ERR_LIB_EVP, EVP_R_XTS_DATA_UNIT_IS_TOO_LARGE); |
5516c19b P |
3355 | return 0; |
3356 | } | |
3357 | ||
0f113f3e MC |
3358 | if (xctx->stream) |
3359 | (*xctx->stream) (in, out, len, | |
6435f0f6 | 3360 | xctx->xts.key1, xctx->xts.key2, |
9197c226 BK |
3361 | ctx->iv); |
3362 | else if (CRYPTO_xts128_encrypt(&xctx->xts, ctx->iv, in, out, len, | |
ed576acd | 3363 | EVP_CIPHER_CTX_is_encrypting(ctx))) |
0f113f3e MC |
3364 | return 0; |
3365 | return 1; | |
3366 | } | |
3367 | ||
5158c763 | 3368 | #define aes_xts_cleanup NULL |
0f113f3e | 3369 | |
5158c763 | 3370 | #define XTS_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 | EVP_CIPH_CUSTOM_IV \ |
0f113f3e MC |
3371 | | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT \ |
3372 | | EVP_CIPH_CUSTOM_COPY) | |
3373 | ||
3374 | BLOCK_CIPHER_custom(NID_aes, 128, 1, 16, xts, XTS, XTS_FLAGS) | |
1c5a4e3b | 3375 | BLOCK_CIPHER_custom(NID_aes, 256, 1, 16, xts, XTS, XTS_FLAGS) |
23916810 DSH |
3376 | |
3377 | static int aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) | |
0f113f3e | 3378 | { |
6435f0f6 | 3379 | EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,c); |
0f113f3e MC |
3380 | switch (type) { |
3381 | case EVP_CTRL_INIT: | |
3382 | cctx->key_set = 0; | |
3383 | cctx->iv_set = 0; | |
3384 | cctx->L = 8; | |
3385 | cctx->M = 12; | |
3386 | cctx->tag_set = 0; | |
3387 | cctx->len_set = 0; | |
e75c5a79 DSH |
3388 | cctx->tls_aad_len = -1; |
3389 | return 1; | |
3390 | ||
7dddf2fc SL |
3391 | case EVP_CTRL_GET_IVLEN: |
3392 | *(int *)ptr = 15 - cctx->L; | |
3393 | return 1; | |
3394 | ||
e75c5a79 DSH |
3395 | case EVP_CTRL_AEAD_TLS1_AAD: |
3396 | /* Save the AAD for later use */ | |
3397 | if (arg != EVP_AEAD_TLS1_AAD_LEN) | |
3398 | return 0; | |
6435f0f6 | 3399 | memcpy(EVP_CIPHER_CTX_buf_noconst(c), ptr, arg); |
e75c5a79 DSH |
3400 | cctx->tls_aad_len = arg; |
3401 | { | |
6435f0f6 RL |
3402 | uint16_t len = |
3403 | EVP_CIPHER_CTX_buf_noconst(c)[arg - 2] << 8 | |
3404 | | EVP_CIPHER_CTX_buf_noconst(c)[arg - 1]; | |
e75c5a79 | 3405 | /* Correct length for explicit IV */ |
2198b3a5 AP |
3406 | if (len < EVP_CCM_TLS_EXPLICIT_IV_LEN) |
3407 | return 0; | |
e75c5a79 DSH |
3408 | len -= EVP_CCM_TLS_EXPLICIT_IV_LEN; |
3409 | /* If decrypting correct for tag too */ | |
ed576acd | 3410 | if (!EVP_CIPHER_CTX_is_encrypting(c)) { |
2198b3a5 AP |
3411 | if (len < cctx->M) |
3412 | return 0; | |
e75c5a79 | 3413 | len -= cctx->M; |
2198b3a5 | 3414 | } |
6435f0f6 RL |
3415 | EVP_CIPHER_CTX_buf_noconst(c)[arg - 2] = len >> 8; |
3416 | EVP_CIPHER_CTX_buf_noconst(c)[arg - 1] = len & 0xff; | |
e75c5a79 DSH |
3417 | } |
3418 | /* Extra padding: tag appended to record */ | |
3419 | return cctx->M; | |
3420 | ||
3421 | case EVP_CTRL_CCM_SET_IV_FIXED: | |
3422 | /* Sanity check length */ | |
3423 | if (arg != EVP_CCM_TLS_FIXED_IV_LEN) | |
3424 | return 0; | |
3425 | /* Just copy to first part of IV */ | |
9197c226 | 3426 | memcpy(c->iv, ptr, arg); |
0f113f3e MC |
3427 | return 1; |
3428 | ||
e640fa02 | 3429 | case EVP_CTRL_AEAD_SET_IVLEN: |
0f113f3e | 3430 | arg = 15 - arg; |
1567a821 | 3431 | /* fall through */ |
0f113f3e MC |
3432 | case EVP_CTRL_CCM_SET_L: |
3433 | if (arg < 2 || arg > 8) | |
3434 | return 0; | |
3435 | cctx->L = arg; | |
3436 | return 1; | |
3437 | ||
e640fa02 | 3438 | case EVP_CTRL_AEAD_SET_TAG: |
0f113f3e MC |
3439 | if ((arg & 1) || arg < 4 || arg > 16) |
3440 | return 0; | |
ed576acd | 3441 | if (EVP_CIPHER_CTX_is_encrypting(c) && ptr) |
0f113f3e MC |
3442 | return 0; |
3443 | if (ptr) { | |
3444 | cctx->tag_set = 1; | |
6435f0f6 | 3445 | memcpy(EVP_CIPHER_CTX_buf_noconst(c), ptr, arg); |
0f113f3e MC |
3446 | } |
3447 | cctx->M = arg; | |
3448 | return 1; | |
3449 | ||
e640fa02 | 3450 | case EVP_CTRL_AEAD_GET_TAG: |
ed576acd | 3451 | if (!EVP_CIPHER_CTX_is_encrypting(c) || !cctx->tag_set) |
0f113f3e MC |
3452 | return 0; |
3453 | if (!CRYPTO_ccm128_tag(&cctx->ccm, ptr, (size_t)arg)) | |
3454 | return 0; | |
3455 | cctx->tag_set = 0; | |
3456 | cctx->iv_set = 0; | |
3457 | cctx->len_set = 0; | |
3458 | return 1; | |
3459 | ||
3460 | case EVP_CTRL_COPY: | |
3461 | { | |
3462 | EVP_CIPHER_CTX *out = ptr; | |
6435f0f6 | 3463 | EVP_AES_CCM_CTX *cctx_out = EVP_C_DATA(EVP_AES_CCM_CTX,out); |
0f113f3e MC |
3464 | if (cctx->ccm.key) { |
3465 | if (cctx->ccm.key != &cctx->ks) | |
3466 | return 0; | |
3467 | cctx_out->ccm.key = &cctx_out->ks; | |
3468 | } | |
3469 | return 1; | |
3470 | } | |
3471 | ||
3472 | default: | |
3473 | return -1; | |
3474 | ||
3475 | } | |
3476 | } | |
23916810 DSH |
3477 | |
3478 | static int aes_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
3479 | const unsigned char *iv, int enc) |
3480 | { | |
6435f0f6 | 3481 | EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,ctx); |
80ce874a P |
3482 | |
3483 | if (iv == NULL && key == NULL) | |
0f113f3e | 3484 | return 1; |
80ce874a P |
3485 | |
3486 | if (key != NULL) { | |
3487 | const int keylen = EVP_CIPHER_CTX_get_key_length(ctx) * 8; | |
3488 | ||
3489 | if (keylen <= 0) { | |
3490 | ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY_LENGTH); | |
3491 | return 0; | |
3492 | } | |
0f113f3e | 3493 | do { |
5158c763 | 3494 | #ifdef HWAES_CAPABLE |
0f113f3e | 3495 | if (HWAES_CAPABLE) { |
80ce874a | 3496 | HWAES_set_encrypt_key(key, keylen, &cctx->ks.ks); |
0f113f3e MC |
3497 | |
3498 | CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, | |
3499 | &cctx->ks, (block128_f) HWAES_encrypt); | |
3500 | cctx->str = NULL; | |
3501 | cctx->key_set = 1; | |
3502 | break; | |
3503 | } else | |
5158c763 MC |
3504 | #endif |
3505 | #ifdef VPAES_CAPABLE | |
0f113f3e | 3506 | if (VPAES_CAPABLE) { |
80ce874a | 3507 | vpaes_set_encrypt_key(key, keylen, &cctx->ks.ks); |
0f113f3e MC |
3508 | CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, |
3509 | &cctx->ks, (block128_f) vpaes_encrypt); | |
3510 | cctx->str = NULL; | |
3511 | cctx->key_set = 1; | |
3512 | break; | |
3513 | } | |
5158c763 | 3514 | #endif |
80ce874a | 3515 | AES_set_encrypt_key(key, keylen, &cctx->ks.ks); |
0f113f3e MC |
3516 | CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, |
3517 | &cctx->ks, (block128_f) AES_encrypt); | |
3518 | cctx->str = NULL; | |
3519 | cctx->key_set = 1; | |
3520 | } while (0); | |
80ce874a P |
3521 | } |
3522 | if (iv != NULL) { | |
9197c226 | 3523 | memcpy(ctx->iv, iv, 15 - cctx->L); |
0f113f3e MC |
3524 | cctx->iv_set = 1; |
3525 | } | |
3526 | return 1; | |
3527 | } | |
23916810 | 3528 | |
e75c5a79 DSH |
3529 | static int aes_ccm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
3530 | const unsigned char *in, size_t len) | |
3531 | { | |
6435f0f6 | 3532 | EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,ctx); |
e75c5a79 DSH |
3533 | CCM128_CONTEXT *ccm = &cctx->ccm; |
3534 | /* Encrypt/decrypt must be performed in place */ | |
3535 | if (out != in || len < (EVP_CCM_TLS_EXPLICIT_IV_LEN + (size_t)cctx->M)) | |
3536 | return -1; | |
3537 | /* If encrypting set explicit IV from sequence number (start of AAD) */ | |
ed576acd | 3538 | if (EVP_CIPHER_CTX_is_encrypting(ctx)) |
6435f0f6 RL |
3539 | memcpy(out, EVP_CIPHER_CTX_buf_noconst(ctx), |
3540 | EVP_CCM_TLS_EXPLICIT_IV_LEN); | |
e75c5a79 | 3541 | /* Get rest of IV from explicit IV */ |
9197c226 | 3542 | memcpy(ctx->iv + EVP_CCM_TLS_FIXED_IV_LEN, in, |
6435f0f6 | 3543 | EVP_CCM_TLS_EXPLICIT_IV_LEN); |
e75c5a79 DSH |
3544 | /* Correct length value */ |
3545 | len -= EVP_CCM_TLS_EXPLICIT_IV_LEN + cctx->M; | |
9197c226 | 3546 | if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L, |
6435f0f6 | 3547 | len)) |
e75c5a79 DSH |
3548 | return -1; |
3549 | /* Use saved AAD */ | |
ed576acd TM |
3550 | CRYPTO_ccm128_aad(ccm, EVP_CIPHER_CTX_buf_noconst(ctx), |
3551 | cctx->tls_aad_len); | |
e75c5a79 DSH |
3552 | /* Fix buffer to point to payload */ |
3553 | in += EVP_CCM_TLS_EXPLICIT_IV_LEN; | |
3554 | out += EVP_CCM_TLS_EXPLICIT_IV_LEN; | |
ed576acd | 3555 | if (EVP_CIPHER_CTX_is_encrypting(ctx)) { |
e75c5a79 DSH |
3556 | if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len, |
3557 | cctx->str) : | |
3558 | CRYPTO_ccm128_encrypt(ccm, in, out, len)) | |
3559 | return -1; | |
3560 | if (!CRYPTO_ccm128_tag(ccm, out + len, cctx->M)) | |
3561 | return -1; | |
3562 | return len + EVP_CCM_TLS_EXPLICIT_IV_LEN + cctx->M; | |
3563 | } else { | |
3564 | if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len, | |
3565 | cctx->str) : | |
3566 | !CRYPTO_ccm128_decrypt(ccm, in, out, len)) { | |
3567 | unsigned char tag[16]; | |
3568 | if (CRYPTO_ccm128_tag(ccm, tag, cctx->M)) { | |
3569 | if (!CRYPTO_memcmp(tag, in + len, cctx->M)) | |
3570 | return len; | |
3571 | } | |
3572 | } | |
3573 | OPENSSL_cleanse(out, len); | |
3574 | return -1; | |
3575 | } | |
3576 | } | |
3577 | ||
17f121de | 3578 | static int aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e MC |
3579 | const unsigned char *in, size_t len) |
3580 | { | |
6435f0f6 | 3581 | EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,ctx); |
0f113f3e MC |
3582 | CCM128_CONTEXT *ccm = &cctx->ccm; |
3583 | /* If not set up, return error */ | |
e75c5a79 DSH |
3584 | if (!cctx->key_set) |
3585 | return -1; | |
3586 | ||
3587 | if (cctx->tls_aad_len >= 0) | |
3588 | return aes_ccm_tls_cipher(ctx, out, in, len); | |
3589 | ||
197421b1 DSH |
3590 | /* EVP_*Final() doesn't return any data */ |
3591 | if (in == NULL && out != NULL) | |
3592 | return 0; | |
3593 | ||
e75c5a79 | 3594 | if (!cctx->iv_set) |
0f113f3e | 3595 | return -1; |
e75c5a79 | 3596 | |
0f113f3e MC |
3597 | if (!out) { |
3598 | if (!in) { | |
9197c226 | 3599 | if (CRYPTO_ccm128_setiv(ccm, ctx->iv, |
6435f0f6 | 3600 | 15 - cctx->L, len)) |
0f113f3e MC |
3601 | return -1; |
3602 | cctx->len_set = 1; | |
3603 | return len; | |
3604 | } | |
3605 | /* If have AAD need message length */ | |
3606 | if (!cctx->len_set && len) | |
3607 | return -1; | |
3608 | CRYPTO_ccm128_aad(ccm, in, len); | |
3609 | return len; | |
3610 | } | |
67c81ec3 TN |
3611 | |
3612 | /* The tag must be set before actually decrypting data */ | |
ed576acd | 3613 | if (!EVP_CIPHER_CTX_is_encrypting(ctx) && !cctx->tag_set) |
67c81ec3 TN |
3614 | return -1; |
3615 | ||
0f113f3e MC |
3616 | /* If not set length yet do it */ |
3617 | if (!cctx->len_set) { | |
9197c226 | 3618 | if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L, len)) |
0f113f3e MC |
3619 | return -1; |
3620 | cctx->len_set = 1; | |
3621 | } | |
ed576acd | 3622 | if (EVP_CIPHER_CTX_is_encrypting(ctx)) { |
0f113f3e MC |
3623 | if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len, |
3624 | cctx->str) : | |
3625 | CRYPTO_ccm128_encrypt(ccm, in, out, len)) | |
3626 | return -1; | |
3627 | cctx->tag_set = 1; | |
3628 | return len; | |
3629 | } else { | |
3630 | int rv = -1; | |
3631 | if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len, | |
3632 | cctx->str) : | |
3633 | !CRYPTO_ccm128_decrypt(ccm, in, out, len)) { | |
3634 | unsigned char tag[16]; | |
3635 | if (CRYPTO_ccm128_tag(ccm, tag, cctx->M)) { | |
6435f0f6 RL |
3636 | if (!CRYPTO_memcmp(tag, EVP_CIPHER_CTX_buf_noconst(ctx), |
3637 | cctx->M)) | |
0f113f3e MC |
3638 | rv = len; |
3639 | } | |
3640 | } | |
3641 | if (rv == -1) | |
3642 | OPENSSL_cleanse(out, len); | |
3643 | cctx->iv_set = 0; | |
3644 | cctx->tag_set = 0; | |
3645 | cctx->len_set = 0; | |
3646 | return rv; | |
3647 | } | |
0f113f3e MC |
3648 | } |
3649 | ||
5158c763 | 3650 | #define aes_ccm_cleanup NULL |
0f113f3e | 3651 | |
e75c5a79 DSH |
3652 | BLOCK_CIPHER_custom(NID_aes, 128, 1, 12, ccm, CCM, |
3653 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) | |
f6c95e46 RS |
3654 | BLOCK_CIPHER_custom(NID_aes, 192, 1, 12, ccm, CCM, |
3655 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) | |
3656 | BLOCK_CIPHER_custom(NID_aes, 256, 1, 12, ccm, CCM, | |
3657 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) | |
0f113f3e MC |
3658 | |
3659 | typedef struct { | |
3660 | union { | |
39147079 | 3661 | OSSL_UNION_ALIGN; |
0f113f3e MC |
3662 | AES_KEY ks; |
3663 | } ks; | |
3664 | /* Indicates if IV has been set */ | |
3665 | unsigned char *iv; | |
3666 | } EVP_AES_WRAP_CTX; | |
97cf1f6c DSH |
3667 | |
3668 | static int aes_wrap_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
3669 | const unsigned char *iv, int enc) |
3670 | { | |
0341ff97 | 3671 | int len; |
6435f0f6 | 3672 | EVP_AES_WRAP_CTX *wctx = EVP_C_DATA(EVP_AES_WRAP_CTX,ctx); |
0341ff97 P |
3673 | |
3674 | if (iv == NULL && key == NULL) | |
0f113f3e | 3675 | return 1; |
0341ff97 | 3676 | if (key != NULL) { |
80ce874a P |
3677 | const int keylen = EVP_CIPHER_CTX_get_key_length(ctx) * 8; |
3678 | ||
3679 | if (keylen <= 0) { | |
3680 | ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY_LENGTH); | |
3681 | return 0; | |
3682 | } | |
ed576acd | 3683 | if (EVP_CIPHER_CTX_is_encrypting(ctx)) |
80ce874a | 3684 | AES_set_encrypt_key(key, keylen, &wctx->ks.ks); |
0f113f3e | 3685 | else |
80ce874a | 3686 | AES_set_decrypt_key(key, keylen, &wctx->ks.ks); |
0341ff97 | 3687 | if (iv == NULL) |
0f113f3e MC |
3688 | wctx->iv = NULL; |
3689 | } | |
0341ff97 P |
3690 | if (iv != NULL) { |
3691 | if ((len = EVP_CIPHER_CTX_get_iv_length(ctx)) < 0) | |
3692 | return 0; | |
3693 | memcpy(ctx->iv, iv, len); | |
9197c226 | 3694 | wctx->iv = ctx->iv; |
0f113f3e MC |
3695 | } |
3696 | return 1; | |
3697 | } | |
97cf1f6c DSH |
3698 | |
3699 | static int aes_wrap_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
0f113f3e MC |
3700 | const unsigned char *in, size_t inlen) |
3701 | { | |
6435f0f6 | 3702 | EVP_AES_WRAP_CTX *wctx = EVP_C_DATA(EVP_AES_WRAP_CTX,ctx); |
0f113f3e MC |
3703 | size_t rv; |
3704 | /* AES wrap with padding has IV length of 4, without padding 8 */ | |
ed576acd | 3705 | int pad = EVP_CIPHER_CTX_get_iv_length(ctx) == 4; |
0f113f3e MC |
3706 | /* No final operation so always return zero length */ |
3707 | if (!in) | |
3708 | return 0; | |
3709 | /* Input length must always be non-zero */ | |
3710 | if (!inlen) | |
3711 | return -1; | |
3712 | /* If decrypting need at least 16 bytes and multiple of 8 */ | |
ed576acd | 3713 | if (!EVP_CIPHER_CTX_is_encrypting(ctx) && (inlen < 16 || inlen & 0x7)) |
0f113f3e MC |
3714 | return -1; |
3715 | /* If not padding input must be multiple of 8 */ | |
3716 | if (!pad && inlen & 0x7) | |
3717 | return -1; | |
6d777689 | 3718 | if (ossl_is_partially_overlapping(out, in, inlen)) { |
9311d0c4 | 3719 | ERR_raise(ERR_LIB_EVP, EVP_R_PARTIALLY_OVERLAPPING); |
7141ba31 MC |
3720 | return 0; |
3721 | } | |
0f113f3e | 3722 | if (!out) { |
ed576acd | 3723 | if (EVP_CIPHER_CTX_is_encrypting(ctx)) { |
0f113f3e MC |
3724 | /* If padding round up to multiple of 8 */ |
3725 | if (pad) | |
3726 | inlen = (inlen + 7) / 8 * 8; | |
3727 | /* 8 byte prefix */ | |
3728 | return inlen + 8; | |
3729 | } else { | |
3730 | /* | |
3731 | * If not padding output will be exactly 8 bytes smaller than | |
3732 | * input. If padding it will be at least 8 bytes smaller but we | |
3733 | * don't know how much. | |
3734 | */ | |
3735 | return inlen - 8; | |
3736 | } | |
3737 | } | |
3738 | if (pad) { | |
ed576acd | 3739 | if (EVP_CIPHER_CTX_is_encrypting(ctx)) |
0f113f3e MC |
3740 | rv = CRYPTO_128_wrap_pad(&wctx->ks.ks, wctx->iv, |
3741 | out, in, inlen, | |
3742 | (block128_f) AES_encrypt); | |
3743 | else | |
3744 | rv = CRYPTO_128_unwrap_pad(&wctx->ks.ks, wctx->iv, | |
3745 | out, in, inlen, | |
3746 | (block128_f) AES_decrypt); | |
3747 | } else { | |
ed576acd | 3748 | if (EVP_CIPHER_CTX_is_encrypting(ctx)) |
0f113f3e MC |
3749 | rv = CRYPTO_128_wrap(&wctx->ks.ks, wctx->iv, |
3750 | out, in, inlen, (block128_f) AES_encrypt); | |
3751 | else | |
3752 | rv = CRYPTO_128_unwrap(&wctx->ks.ks, wctx->iv, | |
3753 | out, in, inlen, (block128_f) AES_decrypt); | |
3754 | } | |
3755 | return rv ? (int)rv : -1; | |
3756 | } | |
3757 | ||
5158c763 | 3758 | #define WRAP_FLAGS (EVP_CIPH_WRAP_MODE \ |
0f113f3e MC |
3759 | | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \ |
3760 | | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_FLAG_DEFAULT_ASN1) | |
97cf1f6c DSH |
3761 | |
3762 | static const EVP_CIPHER aes_128_wrap = { | |
0f113f3e | 3763 | NID_id_aes128_wrap, |
f6c95e46 | 3764 | 8, 16, 8, WRAP_FLAGS, EVP_ORIG_GLOBAL, |
0f113f3e MC |
3765 | aes_wrap_init_key, aes_wrap_cipher, |
3766 | NULL, | |
3767 | sizeof(EVP_AES_WRAP_CTX), | |
3768 | NULL, NULL, NULL, NULL | |
3769 | }; | |
97cf1f6c DSH |
3770 | |
3771 | const EVP_CIPHER *EVP_aes_128_wrap(void) | |
0f113f3e MC |
3772 | { |
3773 | return &aes_128_wrap; | |
3774 | } | |
97cf1f6c DSH |
3775 | |
3776 | static const EVP_CIPHER aes_192_wrap = { | |
0f113f3e | 3777 | NID_id_aes192_wrap, |
f6c95e46 | 3778 | 8, 24, 8, WRAP_FLAGS, EVP_ORIG_GLOBAL, |
0f113f3e MC |
3779 | aes_wrap_init_key, aes_wrap_cipher, |
3780 | NULL, | |
3781 | sizeof(EVP_AES_WRAP_CTX), | |
3782 | NULL, NULL, NULL, NULL | |
3783 | }; | |
97cf1f6c DSH |
3784 | |
3785 | const EVP_CIPHER *EVP_aes_192_wrap(void) | |
0f113f3e MC |
3786 | { |
3787 | return &aes_192_wrap; | |
3788 | } | |
97cf1f6c DSH |
3789 | |
3790 | static const EVP_CIPHER aes_256_wrap = { | |
0f113f3e | 3791 | NID_id_aes256_wrap, |
f6c95e46 | 3792 | 8, 32, 8, WRAP_FLAGS, EVP_ORIG_GLOBAL, |
0f113f3e MC |
3793 | aes_wrap_init_key, aes_wrap_cipher, |
3794 | NULL, | |
3795 | sizeof(EVP_AES_WRAP_CTX), | |
3796 | NULL, NULL, NULL, NULL | |
3797 | }; | |
97cf1f6c DSH |
3798 | |
3799 | const EVP_CIPHER *EVP_aes_256_wrap(void) | |
0f113f3e MC |
3800 | { |
3801 | return &aes_256_wrap; | |
3802 | } | |
97cf1f6c | 3803 | |
d31fed73 | 3804 | static const EVP_CIPHER aes_128_wrap_pad = { |
0f113f3e | 3805 | NID_id_aes128_wrap_pad, |
f6c95e46 | 3806 | 8, 16, 4, WRAP_FLAGS, EVP_ORIG_GLOBAL, |
0f113f3e MC |
3807 | aes_wrap_init_key, aes_wrap_cipher, |
3808 | NULL, | |
3809 | sizeof(EVP_AES_WRAP_CTX), | |
3810 | NULL, NULL, NULL, NULL | |
3811 | }; | |
d31fed73 DSH |
3812 | |
3813 | const EVP_CIPHER *EVP_aes_128_wrap_pad(void) | |
0f113f3e MC |
3814 | { |
3815 | return &aes_128_wrap_pad; | |
3816 | } | |
d31fed73 DSH |
3817 | |
3818 | static const EVP_CIPHER aes_192_wrap_pad = { | |
0f113f3e | 3819 | NID_id_aes192_wrap_pad, |
f6c95e46 | 3820 | 8, 24, 4, WRAP_FLAGS, EVP_ORIG_GLOBAL, |
0f113f3e MC |
3821 | aes_wrap_init_key, aes_wrap_cipher, |
3822 | NULL, | |
3823 | sizeof(EVP_AES_WRAP_CTX), | |
3824 | NULL, NULL, NULL, NULL | |
3825 | }; | |
d31fed73 DSH |
3826 | |
3827 | const EVP_CIPHER *EVP_aes_192_wrap_pad(void) | |
0f113f3e MC |
3828 | { |
3829 | return &aes_192_wrap_pad; | |
3830 | } | |
d31fed73 DSH |
3831 | |
3832 | static const EVP_CIPHER aes_256_wrap_pad = { | |
0f113f3e | 3833 | NID_id_aes256_wrap_pad, |
f6c95e46 | 3834 | 8, 32, 4, WRAP_FLAGS, EVP_ORIG_GLOBAL, |
0f113f3e MC |
3835 | aes_wrap_init_key, aes_wrap_cipher, |
3836 | NULL, | |
3837 | sizeof(EVP_AES_WRAP_CTX), | |
3838 | NULL, NULL, NULL, NULL | |
3839 | }; | |
d31fed73 DSH |
3840 | |
3841 | const EVP_CIPHER *EVP_aes_256_wrap_pad(void) | |
0f113f3e MC |
3842 | { |
3843 | return &aes_256_wrap_pad; | |
3844 | } | |
d31fed73 | 3845 | |
5158c763 | 3846 | #ifndef OPENSSL_NO_OCB |
e6b336ef | 3847 | static int aes_ocb_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) |
0f113f3e | 3848 | { |
6435f0f6 | 3849 | EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,c); |
0f113f3e MC |
3850 | EVP_CIPHER_CTX *newc; |
3851 | EVP_AES_OCB_CTX *new_octx; | |
3852 | ||
3853 | switch (type) { | |
3854 | case EVP_CTRL_INIT: | |
3855 | octx->key_set = 0; | |
3856 | octx->iv_set = 0; | |
ed576acd | 3857 | octx->ivlen = EVP_CIPHER_get_iv_length(c->cipher); |
9197c226 | 3858 | octx->iv = c->iv; |
0f113f3e MC |
3859 | octx->taglen = 16; |
3860 | octx->data_buf_len = 0; | |
3861 | octx->aad_buf_len = 0; | |
3862 | return 1; | |
3863 | ||
7dddf2fc SL |
3864 | case EVP_CTRL_GET_IVLEN: |
3865 | *(int *)ptr = octx->ivlen; | |
3866 | return 1; | |
3867 | ||
e640fa02 | 3868 | case EVP_CTRL_AEAD_SET_IVLEN: |
0f113f3e MC |
3869 | /* IV len must be 1 to 15 */ |
3870 | if (arg <= 0 || arg > 15) | |
3871 | return 0; | |
3872 | ||
3873 | octx->ivlen = arg; | |
3874 | return 1; | |
3875 | ||
e640fa02 | 3876 | case EVP_CTRL_AEAD_SET_TAG: |
12a765a5 | 3877 | if (ptr == NULL) { |
d57d135c MC |
3878 | /* Tag len must be 0 to 16 */ |
3879 | if (arg < 0 || arg > 16) | |
3880 | return 0; | |
3881 | ||
3882 | octx->taglen = arg; | |
3883 | return 1; | |
3884 | } | |
ed576acd | 3885 | if (arg != octx->taglen || EVP_CIPHER_CTX_is_encrypting(c)) |
0f113f3e MC |
3886 | return 0; |
3887 | memcpy(octx->tag, ptr, arg); | |
3888 | return 1; | |
3889 | ||
e640fa02 | 3890 | case EVP_CTRL_AEAD_GET_TAG: |
ed576acd | 3891 | if (arg != octx->taglen || !EVP_CIPHER_CTX_is_encrypting(c)) |
0f113f3e MC |
3892 | return 0; |
3893 | ||
3894 | memcpy(ptr, octx->tag, arg); | |
3895 | return 1; | |
3896 | ||
3897 | case EVP_CTRL_COPY: | |
3898 | newc = (EVP_CIPHER_CTX *)ptr; | |
6435f0f6 | 3899 | new_octx = EVP_C_DATA(EVP_AES_OCB_CTX,newc); |
0f113f3e | 3900 | return CRYPTO_ocb128_copy_ctx(&new_octx->ocb, &octx->ocb, |
bdc985b1 AP |
3901 | &new_octx->ksenc.ks, |
3902 | &new_octx->ksdec.ks); | |
0f113f3e MC |
3903 | |
3904 | default: | |
3905 | return -1; | |
3906 | ||
3907 | } | |
3908 | } | |
e6b336ef MC |
3909 | |
3910 | static int aes_ocb_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
3911 | const unsigned char *iv, int enc) |
3912 | { | |
6435f0f6 | 3913 | EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,ctx); |
80ce874a P |
3914 | |
3915 | if (iv == NULL && key == NULL) | |
0f113f3e | 3916 | return 1; |
80ce874a P |
3917 | |
3918 | if (key != NULL) { | |
3919 | const int keylen = EVP_CIPHER_CTX_get_key_length(ctx) * 8; | |
3920 | ||
3921 | if (keylen <= 0) { | |
3922 | ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY_LENGTH); | |
3923 | return 0; | |
3924 | } | |
0f113f3e MC |
3925 | do { |
3926 | /* | |
3927 | * We set both the encrypt and decrypt key here because decrypt | |
3928 | * needs both. We could possibly optimise to remove setting the | |
3929 | * decrypt for an encryption operation. | |
3930 | */ | |
5158c763 | 3931 | # ifdef HWAES_CAPABLE |
02dc0b82 | 3932 | if (HWAES_CAPABLE) { |
80ce874a P |
3933 | HWAES_set_encrypt_key(key, keylen, &octx->ksenc.ks); |
3934 | HWAES_set_decrypt_key(key, keylen, &octx->ksdec.ks); | |
02dc0b82 AP |
3935 | if (!CRYPTO_ocb128_init(&octx->ocb, |
3936 | &octx->ksenc.ks, &octx->ksdec.ks, | |
3937 | (block128_f) HWAES_encrypt, | |
3938 | (block128_f) HWAES_decrypt, | |
3939 | enc ? HWAES_ocb_encrypt | |
3940 | : HWAES_ocb_decrypt)) | |
3941 | return 0; | |
3942 | break; | |
3943 | } | |
5158c763 MC |
3944 | # endif |
3945 | # ifdef VPAES_CAPABLE | |
0f113f3e | 3946 | if (VPAES_CAPABLE) { |
80ce874a P |
3947 | vpaes_set_encrypt_key(key, keylen, &octx->ksenc.ks); |
3948 | vpaes_set_decrypt_key(key, keylen, &octx->ksdec.ks); | |
bdc985b1 AP |
3949 | if (!CRYPTO_ocb128_init(&octx->ocb, |
3950 | &octx->ksenc.ks, &octx->ksdec.ks, | |
3951 | (block128_f) vpaes_encrypt, | |
bd30091c AP |
3952 | (block128_f) vpaes_decrypt, |
3953 | NULL)) | |
0f113f3e MC |
3954 | return 0; |
3955 | break; | |
3956 | } | |
5158c763 | 3957 | # endif |
80ce874a P |
3958 | AES_set_encrypt_key(key, keylen, &octx->ksenc.ks); |
3959 | AES_set_decrypt_key(key, keylen, &octx->ksdec.ks); | |
bdc985b1 AP |
3960 | if (!CRYPTO_ocb128_init(&octx->ocb, |
3961 | &octx->ksenc.ks, &octx->ksdec.ks, | |
0f113f3e | 3962 | (block128_f) AES_encrypt, |
bd30091c AP |
3963 | (block128_f) AES_decrypt, |
3964 | NULL)) | |
0f113f3e MC |
3965 | return 0; |
3966 | } | |
3967 | while (0); | |
3968 | ||
3969 | /* | |
3970 | * If we have an iv we can set it directly, otherwise use saved IV. | |
3971 | */ | |
3972 | if (iv == NULL && octx->iv_set) | |
3973 | iv = octx->iv; | |
3974 | if (iv) { | |
3975 | if (CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen) | |
3976 | != 1) | |
3977 | return 0; | |
3978 | octx->iv_set = 1; | |
3979 | } | |
3980 | octx->key_set = 1; | |
3981 | } else { | |
3982 | /* If key set use IV, otherwise copy */ | |
3983 | if (octx->key_set) | |
3984 | CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen); | |
3985 | else | |
3986 | memcpy(octx->iv, iv, octx->ivlen); | |
3987 | octx->iv_set = 1; | |
3988 | } | |
3989 | return 1; | |
3990 | } | |
e6b336ef MC |
3991 | |
3992 | static int aes_ocb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
0f113f3e MC |
3993 | const unsigned char *in, size_t len) |
3994 | { | |
3995 | unsigned char *buf; | |
3996 | int *buf_len; | |
3997 | int written_len = 0; | |
3998 | size_t trailing_len; | |
6435f0f6 | 3999 | EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,ctx); |
0f113f3e MC |
4000 | |
4001 | /* If IV or Key not set then return error */ | |
4002 | if (!octx->iv_set) | |
4003 | return -1; | |
4004 | ||
4005 | if (!octx->key_set) | |
4006 | return -1; | |
4007 | ||
0ba5a9ea | 4008 | if (in != NULL) { |
0f113f3e | 4009 | /* |
1567a821 | 4010 | * Need to ensure we are only passing full blocks to low-level OCB |
0f113f3e MC |
4011 | * routines. We do it here rather than in EVP_EncryptUpdate/ |
4012 | * EVP_DecryptUpdate because we need to pass full blocks of AAD too | |
4013 | * and those routines don't support that | |
4014 | */ | |
4015 | ||
4016 | /* Are we dealing with AAD or normal data here? */ | |
4017 | if (out == NULL) { | |
4018 | buf = octx->aad_buf; | |
4019 | buf_len = &(octx->aad_buf_len); | |
4020 | } else { | |
4021 | buf = octx->data_buf; | |
4022 | buf_len = &(octx->data_buf_len); | |
7141ba31 | 4023 | |
6d777689 | 4024 | if (ossl_is_partially_overlapping(out + *buf_len, in, len)) { |
9311d0c4 | 4025 | ERR_raise(ERR_LIB_EVP, EVP_R_PARTIALLY_OVERLAPPING); |
7141ba31 MC |
4026 | return 0; |
4027 | } | |
0f113f3e MC |
4028 | } |
4029 | ||
4030 | /* | |
4031 | * If we've got a partially filled buffer from a previous call then | |
4032 | * use that data first | |
4033 | */ | |
0ba5a9ea | 4034 | if (*buf_len > 0) { |
0f113f3e MC |
4035 | unsigned int remaining; |
4036 | ||
0ba5a9ea | 4037 | remaining = AES_BLOCK_SIZE - (*buf_len); |
0f113f3e MC |
4038 | if (remaining > len) { |
4039 | memcpy(buf + (*buf_len), in, len); | |
4040 | *(buf_len) += len; | |
4041 | return 0; | |
4042 | } | |
4043 | memcpy(buf + (*buf_len), in, remaining); | |
4044 | ||
4045 | /* | |
4046 | * If we get here we've filled the buffer, so process it | |
4047 | */ | |
4048 | len -= remaining; | |
4049 | in += remaining; | |
4050 | if (out == NULL) { | |
0ba5a9ea | 4051 | if (!CRYPTO_ocb128_aad(&octx->ocb, buf, AES_BLOCK_SIZE)) |
0f113f3e | 4052 | return -1; |
ed576acd | 4053 | } else if (EVP_CIPHER_CTX_is_encrypting(ctx)) { |
0ba5a9ea MC |
4054 | if (!CRYPTO_ocb128_encrypt(&octx->ocb, buf, out, |
4055 | AES_BLOCK_SIZE)) | |
0f113f3e MC |
4056 | return -1; |
4057 | } else { | |
0ba5a9ea MC |
4058 | if (!CRYPTO_ocb128_decrypt(&octx->ocb, buf, out, |
4059 | AES_BLOCK_SIZE)) | |
0f113f3e MC |
4060 | return -1; |
4061 | } | |
0ba5a9ea | 4062 | written_len = AES_BLOCK_SIZE; |
0f113f3e | 4063 | *buf_len = 0; |
7c12c7b6 MC |
4064 | if (out != NULL) |
4065 | out += AES_BLOCK_SIZE; | |
0f113f3e MC |
4066 | } |
4067 | ||
4068 | /* Do we have a partial block to handle at the end? */ | |
0ba5a9ea | 4069 | trailing_len = len % AES_BLOCK_SIZE; |
0f113f3e MC |
4070 | |
4071 | /* | |
4072 | * If we've got some full blocks to handle, then process these first | |
4073 | */ | |
4074 | if (len != trailing_len) { | |
4075 | if (out == NULL) { | |
4076 | if (!CRYPTO_ocb128_aad(&octx->ocb, in, len - trailing_len)) | |
4077 | return -1; | |
ed576acd | 4078 | } else if (EVP_CIPHER_CTX_is_encrypting(ctx)) { |
0f113f3e MC |
4079 | if (!CRYPTO_ocb128_encrypt |
4080 | (&octx->ocb, in, out, len - trailing_len)) | |
4081 | return -1; | |
4082 | } else { | |
4083 | if (!CRYPTO_ocb128_decrypt | |
4084 | (&octx->ocb, in, out, len - trailing_len)) | |
4085 | return -1; | |
4086 | } | |
4087 | written_len += len - trailing_len; | |
4088 | in += len - trailing_len; | |
4089 | } | |
4090 | ||
4091 | /* Handle any trailing partial block */ | |
0ba5a9ea | 4092 | if (trailing_len > 0) { |
0f113f3e MC |
4093 | memcpy(buf, in, trailing_len); |
4094 | *buf_len = trailing_len; | |
4095 | } | |
4096 | ||
4097 | return written_len; | |
4098 | } else { | |
4099 | /* | |
4100 | * First of all empty the buffer of any partial block that we might | |
4101 | * have been provided - both for data and AAD | |
4102 | */ | |
0ba5a9ea | 4103 | if (octx->data_buf_len > 0) { |
ed576acd | 4104 | if (EVP_CIPHER_CTX_is_encrypting(ctx)) { |
0f113f3e MC |
4105 | if (!CRYPTO_ocb128_encrypt(&octx->ocb, octx->data_buf, out, |
4106 | octx->data_buf_len)) | |
4107 | return -1; | |
4108 | } else { | |
4109 | if (!CRYPTO_ocb128_decrypt(&octx->ocb, octx->data_buf, out, | |
4110 | octx->data_buf_len)) | |
4111 | return -1; | |
4112 | } | |
4113 | written_len = octx->data_buf_len; | |
4114 | octx->data_buf_len = 0; | |
4115 | } | |
0ba5a9ea | 4116 | if (octx->aad_buf_len > 0) { |
0f113f3e MC |
4117 | if (!CRYPTO_ocb128_aad |
4118 | (&octx->ocb, octx->aad_buf, octx->aad_buf_len)) | |
4119 | return -1; | |
4120 | octx->aad_buf_len = 0; | |
4121 | } | |
4122 | /* If decrypting then verify */ | |
ed576acd | 4123 | if (!EVP_CIPHER_CTX_is_encrypting(ctx)) { |
0f113f3e MC |
4124 | if (octx->taglen < 0) |
4125 | return -1; | |
4126 | if (CRYPTO_ocb128_finish(&octx->ocb, | |
4127 | octx->tag, octx->taglen) != 0) | |
4128 | return -1; | |
4129 | octx->iv_set = 0; | |
4130 | return written_len; | |
4131 | } | |
4132 | /* If encrypting then just get the tag */ | |
4133 | if (CRYPTO_ocb128_tag(&octx->ocb, octx->tag, 16) != 1) | |
4134 | return -1; | |
4135 | /* Don't reuse the IV */ | |
4136 | octx->iv_set = 0; | |
4137 | return written_len; | |
4138 | } | |
4139 | } | |
e6b336ef MC |
4140 | |
4141 | static int aes_ocb_cleanup(EVP_CIPHER_CTX *c) | |
0f113f3e | 4142 | { |
6435f0f6 | 4143 | EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,c); |
0f113f3e MC |
4144 | CRYPTO_ocb128_cleanup(&octx->ocb); |
4145 | return 1; | |
4146 | } | |
e6b336ef | 4147 | |
c4aede20 MC |
4148 | BLOCK_CIPHER_custom(NID_aes, 128, 16, 12, ocb, OCB, |
4149 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) | |
4150 | BLOCK_CIPHER_custom(NID_aes, 192, 16, 12, ocb, OCB, | |
4151 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) | |
4152 | BLOCK_CIPHER_custom(NID_aes, 256, 16, 12, ocb, OCB, | |
4153 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) | |
5158c763 | 4154 | #endif /* OPENSSL_NO_OCB */ |