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aa6bb135 | 1 | /* |
3c2bdd7d | 2 | * Copyright 2001-2021 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 MC |
10 | /* |
11 | * This file uses the low level AES functions (which are deprecated for | |
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); |
0f113f3e | 149 | |
ed576acd | 150 | mode = EVP_CIPHER_CTX_get_mode(ctx); |
0f113f3e MC |
151 | if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE) |
152 | && !enc) { | |
ed576acd TM |
153 | ret = aesni_set_decrypt_key(key, |
154 | EVP_CIPHER_CTX_get_key_length(ctx) * 8, | |
6435f0f6 | 155 | &dat->ks.ks); |
0f113f3e MC |
156 | dat->block = (block128_f) aesni_decrypt; |
157 | dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? | |
158 | (cbc128_f) aesni_cbc_encrypt : NULL; | |
159 | } else { | |
ed576acd TM |
160 | ret = aesni_set_encrypt_key(key, |
161 | EVP_CIPHER_CTX_get_key_length(ctx) * 8, | |
6435f0f6 | 162 | &dat->ks.ks); |
0f113f3e MC |
163 | dat->block = (block128_f) aesni_encrypt; |
164 | if (mode == EVP_CIPH_CBC_MODE) | |
165 | dat->stream.cbc = (cbc128_f) aesni_cbc_encrypt; | |
166 | else if (mode == EVP_CIPH_CTR_MODE) | |
167 | dat->stream.ctr = (ctr128_f) aesni_ctr32_encrypt_blocks; | |
168 | else | |
169 | dat->stream.cbc = NULL; | |
170 | } | |
171 | ||
172 | if (ret < 0) { | |
9311d0c4 | 173 | ERR_raise(ERR_LIB_EVP, EVP_R_AES_KEY_SETUP_FAILED); |
0f113f3e MC |
174 | return 0; |
175 | } | |
176 | ||
177 | return 1; | |
178 | } | |
179 | ||
180 | static int aesni_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
181 | const unsigned char *in, size_t len) | |
d1fff483 | 182 | { |
6435f0f6 | 183 | aesni_cbc_encrypt(in, out, len, &EVP_C_DATA(EVP_AES_KEY,ctx)->ks.ks, |
ed576acd | 184 | ctx->iv, EVP_CIPHER_CTX_is_encrypting(ctx)); |
d1fff483 | 185 | |
0f113f3e | 186 | return 1; |
d1fff483 AP |
187 | } |
188 | ||
0f113f3e MC |
189 | static int aesni_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
190 | const unsigned char *in, size_t len) | |
d1fff483 | 191 | { |
ed576acd | 192 | size_t bl = EVP_CIPHER_CTX_get_block_size(ctx); |
d1fff483 | 193 | |
0f113f3e MC |
194 | if (len < bl) |
195 | return 1; | |
d1fff483 | 196 | |
6435f0f6 | 197 | aesni_ecb_encrypt(in, out, len, &EVP_C_DATA(EVP_AES_KEY,ctx)->ks.ks, |
ed576acd | 198 | EVP_CIPHER_CTX_is_encrypting(ctx)); |
d1fff483 | 199 | |
0f113f3e | 200 | return 1; |
d1fff483 AP |
201 | } |
202 | ||
5158c763 | 203 | # define aesni_ofb_cipher aes_ofb_cipher |
0f113f3e MC |
204 | static int aesni_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
205 | const unsigned char *in, size_t len); | |
d1fff483 | 206 | |
5158c763 | 207 | # define aesni_cfb_cipher aes_cfb_cipher |
0f113f3e MC |
208 | static int aesni_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
209 | const unsigned char *in, size_t len); | |
d1fff483 | 210 | |
5158c763 | 211 | # define aesni_cfb8_cipher aes_cfb8_cipher |
0f113f3e MC |
212 | static int aesni_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
213 | const unsigned char *in, size_t len); | |
d1fff483 | 214 | |
5158c763 | 215 | # define aesni_cfb1_cipher aes_cfb1_cipher |
0f113f3e MC |
216 | static int aesni_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
217 | const unsigned char *in, size_t len); | |
d1fff483 | 218 | |
5158c763 | 219 | # define aesni_ctr_cipher aes_ctr_cipher |
17f121de | 220 | static int aesni_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 221 | const unsigned char *in, size_t len); |
d1fff483 | 222 | |
17f121de | 223 | static int aesni_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, |
0f113f3e MC |
224 | const unsigned char *iv, int enc) |
225 | { | |
6435f0f6 | 226 | EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,ctx); |
0f113f3e MC |
227 | if (!iv && !key) |
228 | return 1; | |
229 | if (key) { | |
ed576acd | 230 | aesni_set_encrypt_key(key, EVP_CIPHER_CTX_get_key_length(ctx) * 8, |
6435f0f6 | 231 | &gctx->ks.ks); |
0f113f3e MC |
232 | CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f) aesni_encrypt); |
233 | gctx->ctr = (ctr128_f) aesni_ctr32_encrypt_blocks; | |
234 | /* | |
235 | * If we have an iv can set it directly, otherwise use saved IV. | |
236 | */ | |
237 | if (iv == NULL && gctx->iv_set) | |
238 | iv = gctx->iv; | |
239 | if (iv) { | |
240 | CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); | |
241 | gctx->iv_set = 1; | |
242 | } | |
243 | gctx->key_set = 1; | |
244 | } else { | |
245 | /* If key set use IV, otherwise copy */ | |
246 | if (gctx->key_set) | |
247 | CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); | |
248 | else | |
249 | memcpy(gctx->iv, iv, gctx->ivlen); | |
250 | gctx->iv_set = 1; | |
251 | gctx->iv_gen = 0; | |
252 | } | |
253 | return 1; | |
254 | } | |
255 | ||
5158c763 | 256 | # define aesni_gcm_cipher aes_gcm_cipher |
17f121de | 257 | static int aesni_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 258 | const unsigned char *in, size_t len); |
17f121de AP |
259 | |
260 | static int aesni_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
261 | const unsigned char *iv, int enc) |
262 | { | |
6435f0f6 | 263 | EVP_AES_XTS_CTX *xctx = EVP_C_DATA(EVP_AES_XTS_CTX,ctx); |
2c840201 | 264 | |
0f113f3e MC |
265 | if (!iv && !key) |
266 | return 1; | |
267 | ||
268 | if (key) { | |
3538b0f7 | 269 | /* The key is two half length keys in reality */ |
ed576acd | 270 | const int bytes = EVP_CIPHER_CTX_get_key_length(ctx) / 2; |
3538b0f7 P |
271 | const int bits = bytes * 8; |
272 | ||
273 | /* | |
274 | * Verify that the two keys are different. | |
4bd8b240 | 275 | * |
3538b0f7 P |
276 | * This addresses Rogaway's vulnerability. |
277 | * See comment in aes_xts_init_key() below. | |
278 | */ | |
2c840201 P |
279 | if ((!allow_insecure_decrypt || enc) |
280 | && CRYPTO_memcmp(key, key + bytes, bytes) == 0) { | |
9311d0c4 | 281 | ERR_raise(ERR_LIB_EVP, EVP_R_XTS_DUPLICATED_KEYS); |
3538b0f7 P |
282 | return 0; |
283 | } | |
284 | ||
0f113f3e MC |
285 | /* key_len is two AES keys */ |
286 | if (enc) { | |
3538b0f7 | 287 | aesni_set_encrypt_key(key, bits, &xctx->ks1.ks); |
0f113f3e MC |
288 | xctx->xts.block1 = (block128_f) aesni_encrypt; |
289 | xctx->stream = aesni_xts_encrypt; | |
290 | } else { | |
3538b0f7 | 291 | aesni_set_decrypt_key(key, bits, &xctx->ks1.ks); |
0f113f3e MC |
292 | xctx->xts.block1 = (block128_f) aesni_decrypt; |
293 | xctx->stream = aesni_xts_decrypt; | |
294 | } | |
295 | ||
3538b0f7 | 296 | aesni_set_encrypt_key(key + bytes, bits, &xctx->ks2.ks); |
0f113f3e MC |
297 | xctx->xts.block2 = (block128_f) aesni_encrypt; |
298 | ||
299 | xctx->xts.key1 = &xctx->ks1; | |
300 | } | |
301 | ||
302 | if (iv) { | |
303 | xctx->xts.key2 = &xctx->ks2; | |
9197c226 | 304 | memcpy(ctx->iv, iv, 16); |
0f113f3e MC |
305 | } |
306 | ||
307 | return 1; | |
308 | } | |
309 | ||
5158c763 | 310 | # define aesni_xts_cipher aes_xts_cipher |
17f121de | 311 | static int aesni_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 312 | const unsigned char *in, size_t len); |
17f121de AP |
313 | |
314 | static int aesni_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
315 | const unsigned char *iv, int enc) |
316 | { | |
6435f0f6 | 317 | EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,ctx); |
0f113f3e MC |
318 | if (!iv && !key) |
319 | return 1; | |
320 | if (key) { | |
ed576acd | 321 | aesni_set_encrypt_key(key, EVP_CIPHER_CTX_get_key_length(ctx) * 8, |
6435f0f6 | 322 | &cctx->ks.ks); |
0f113f3e MC |
323 | CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, |
324 | &cctx->ks, (block128_f) aesni_encrypt); | |
325 | cctx->str = enc ? (ccm128_f) aesni_ccm64_encrypt_blocks : | |
326 | (ccm128_f) aesni_ccm64_decrypt_blocks; | |
327 | cctx->key_set = 1; | |
328 | } | |
329 | if (iv) { | |
9197c226 | 330 | memcpy(ctx->iv, iv, 15 - cctx->L); |
0f113f3e MC |
331 | cctx->iv_set = 1; |
332 | } | |
333 | return 1; | |
334 | } | |
335 | ||
5158c763 | 336 | # define aesni_ccm_cipher aes_ccm_cipher |
17f121de | 337 | static int aesni_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 338 | const unsigned char *in, size_t len); |
17f121de | 339 | |
5158c763 | 340 | # ifndef OPENSSL_NO_OCB |
e6b336ef | 341 | static int aesni_ocb_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, |
0f113f3e MC |
342 | const unsigned char *iv, int enc) |
343 | { | |
6435f0f6 | 344 | EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,ctx); |
0f113f3e MC |
345 | if (!iv && !key) |
346 | return 1; | |
347 | if (key) { | |
348 | do { | |
349 | /* | |
350 | * We set both the encrypt and decrypt key here because decrypt | |
351 | * needs both. We could possibly optimise to remove setting the | |
352 | * decrypt for an encryption operation. | |
353 | */ | |
ed576acd | 354 | aesni_set_encrypt_key(key, EVP_CIPHER_CTX_get_key_length(ctx) * 8, |
6435f0f6 | 355 | &octx->ksenc.ks); |
ed576acd | 356 | aesni_set_decrypt_key(key, EVP_CIPHER_CTX_get_key_length(ctx) * 8, |
6435f0f6 | 357 | &octx->ksdec.ks); |
bdc985b1 AP |
358 | if (!CRYPTO_ocb128_init(&octx->ocb, |
359 | &octx->ksenc.ks, &octx->ksdec.ks, | |
0f113f3e | 360 | (block128_f) aesni_encrypt, |
bd30091c AP |
361 | (block128_f) aesni_decrypt, |
362 | enc ? aesni_ocb_encrypt | |
363 | : aesni_ocb_decrypt)) | |
0f113f3e MC |
364 | return 0; |
365 | } | |
366 | while (0); | |
367 | ||
368 | /* | |
369 | * If we have an iv we can set it directly, otherwise use saved IV. | |
370 | */ | |
371 | if (iv == NULL && octx->iv_set) | |
372 | iv = octx->iv; | |
373 | if (iv) { | |
374 | if (CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen) | |
375 | != 1) | |
376 | return 0; | |
377 | octx->iv_set = 1; | |
378 | } | |
379 | octx->key_set = 1; | |
380 | } else { | |
381 | /* If key set use IV, otherwise copy */ | |
382 | if (octx->key_set) | |
383 | CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen); | |
384 | else | |
385 | memcpy(octx->iv, iv, octx->ivlen); | |
386 | octx->iv_set = 1; | |
387 | } | |
388 | return 1; | |
389 | } | |
390 | ||
5158c763 | 391 | # define aesni_ocb_cipher aes_ocb_cipher |
e6b336ef | 392 | static int aesni_ocb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 393 | const unsigned char *in, size_t len); |
5158c763 | 394 | # endif /* OPENSSL_NO_OCB */ |
e6b336ef | 395 | |
5158c763 | 396 | # define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \ |
17f121de | 397 | static const EVP_CIPHER aesni_##keylen##_##mode = { \ |
0f113f3e MC |
398 | nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \ |
399 | flags|EVP_CIPH_##MODE##_MODE, \ | |
f6c95e46 | 400 | EVP_ORIG_GLOBAL, \ |
0f113f3e MC |
401 | aesni_init_key, \ |
402 | aesni_##mode##_cipher, \ | |
403 | NULL, \ | |
404 | sizeof(EVP_AES_KEY), \ | |
405 | NULL,NULL,NULL,NULL }; \ | |
17f121de | 406 | static const EVP_CIPHER aes_##keylen##_##mode = { \ |
0f113f3e | 407 | nid##_##keylen##_##nmode,blocksize, \ |
f6c95e46 | 408 | keylen/8,ivlen, \ |
0f113f3e | 409 | flags|EVP_CIPH_##MODE##_MODE, \ |
f6c95e46 | 410 | EVP_ORIG_GLOBAL, \ |
0f113f3e MC |
411 | aes_init_key, \ |
412 | aes_##mode##_cipher, \ | |
413 | NULL, \ | |
414 | sizeof(EVP_AES_KEY), \ | |
415 | NULL,NULL,NULL,NULL }; \ | |
17f121de | 416 | const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ |
8ca28da0 | 417 | { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; } |
17f121de | 418 | |
5158c763 | 419 | # define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \ |
17f121de | 420 | static const EVP_CIPHER aesni_##keylen##_##mode = { \ |
0f113f3e | 421 | nid##_##keylen##_##mode,blocksize, \ |
b1ceb439 TS |
422 | (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE||EVP_CIPH_##MODE##_MODE==EVP_CIPH_SIV_MODE?2:1)*keylen/8, \ |
423 | ivlen, \ | |
0f113f3e | 424 | flags|EVP_CIPH_##MODE##_MODE, \ |
f6c95e46 | 425 | EVP_ORIG_GLOBAL, \ |
0f113f3e MC |
426 | aesni_##mode##_init_key, \ |
427 | aesni_##mode##_cipher, \ | |
428 | aes_##mode##_cleanup, \ | |
429 | sizeof(EVP_AES_##MODE##_CTX), \ | |
430 | NULL,NULL,aes_##mode##_ctrl,NULL }; \ | |
17f121de | 431 | static const EVP_CIPHER aes_##keylen##_##mode = { \ |
0f113f3e | 432 | nid##_##keylen##_##mode,blocksize, \ |
b1ceb439 TS |
433 | (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE||EVP_CIPH_##MODE##_MODE==EVP_CIPH_SIV_MODE?2:1)*keylen/8, \ |
434 | ivlen, \ | |
0f113f3e | 435 | flags|EVP_CIPH_##MODE##_MODE, \ |
f6c95e46 | 436 | EVP_ORIG_GLOBAL, \ |
0f113f3e MC |
437 | aes_##mode##_init_key, \ |
438 | aes_##mode##_cipher, \ | |
439 | aes_##mode##_cleanup, \ | |
440 | sizeof(EVP_AES_##MODE##_CTX), \ | |
441 | NULL,NULL,aes_##mode##_ctrl,NULL }; \ | |
17f121de | 442 | const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ |
8ca28da0 | 443 | { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; } |
d1fff483 | 444 | |
459b15d4 | 445 | #elif defined(SPARC_AES_CAPABLE) |
c5f6da54 AP |
446 | |
447 | static int aes_t4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
448 | const unsigned char *iv, int enc) |
449 | { | |
450 | int ret, mode, bits; | |
6435f0f6 | 451 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); |
0f113f3e | 452 | |
ed576acd TM |
453 | mode = EVP_CIPHER_CTX_get_mode(ctx); |
454 | bits = EVP_CIPHER_CTX_get_key_length(ctx) * 8; | |
0f113f3e MC |
455 | if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE) |
456 | && !enc) { | |
457 | ret = 0; | |
6435f0f6 | 458 | aes_t4_set_decrypt_key(key, bits, &dat->ks.ks); |
0f113f3e MC |
459 | dat->block = (block128_f) aes_t4_decrypt; |
460 | switch (bits) { | |
461 | case 128: | |
462 | dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? | |
463 | (cbc128_f) aes128_t4_cbc_decrypt : NULL; | |
464 | break; | |
465 | case 192: | |
466 | dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? | |
467 | (cbc128_f) aes192_t4_cbc_decrypt : NULL; | |
468 | break; | |
469 | case 256: | |
470 | dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? | |
471 | (cbc128_f) aes256_t4_cbc_decrypt : NULL; | |
472 | break; | |
473 | default: | |
474 | ret = -1; | |
475 | } | |
476 | } else { | |
477 | ret = 0; | |
6435f0f6 | 478 | aes_t4_set_encrypt_key(key, bits, &dat->ks.ks); |
0f113f3e MC |
479 | dat->block = (block128_f) aes_t4_encrypt; |
480 | switch (bits) { | |
481 | case 128: | |
482 | if (mode == EVP_CIPH_CBC_MODE) | |
483 | dat->stream.cbc = (cbc128_f) aes128_t4_cbc_encrypt; | |
484 | else if (mode == EVP_CIPH_CTR_MODE) | |
485 | dat->stream.ctr = (ctr128_f) aes128_t4_ctr32_encrypt; | |
486 | else | |
487 | dat->stream.cbc = NULL; | |
488 | break; | |
489 | case 192: | |
490 | if (mode == EVP_CIPH_CBC_MODE) | |
491 | dat->stream.cbc = (cbc128_f) aes192_t4_cbc_encrypt; | |
492 | else if (mode == EVP_CIPH_CTR_MODE) | |
493 | dat->stream.ctr = (ctr128_f) aes192_t4_ctr32_encrypt; | |
494 | else | |
495 | dat->stream.cbc = NULL; | |
496 | break; | |
497 | case 256: | |
498 | if (mode == EVP_CIPH_CBC_MODE) | |
499 | dat->stream.cbc = (cbc128_f) aes256_t4_cbc_encrypt; | |
500 | else if (mode == EVP_CIPH_CTR_MODE) | |
501 | dat->stream.ctr = (ctr128_f) aes256_t4_ctr32_encrypt; | |
502 | else | |
503 | dat->stream.cbc = NULL; | |
504 | break; | |
505 | default: | |
506 | ret = -1; | |
507 | } | |
508 | } | |
509 | ||
510 | if (ret < 0) { | |
9311d0c4 | 511 | ERR_raise(ERR_LIB_EVP, EVP_R_AES_KEY_SETUP_FAILED); |
0f113f3e MC |
512 | return 0; |
513 | } | |
514 | ||
515 | return 1; | |
516 | } | |
517 | ||
5158c763 | 518 | # define aes_t4_cbc_cipher aes_cbc_cipher |
0f113f3e MC |
519 | static int aes_t4_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
520 | const unsigned char *in, size_t len); | |
521 | ||
5158c763 | 522 | # define aes_t4_ecb_cipher aes_ecb_cipher |
0f113f3e MC |
523 | static int aes_t4_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
524 | const unsigned char *in, size_t len); | |
525 | ||
5158c763 | 526 | # define aes_t4_ofb_cipher aes_ofb_cipher |
0f113f3e MC |
527 | static int aes_t4_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
528 | const unsigned char *in, size_t len); | |
529 | ||
5158c763 | 530 | # define aes_t4_cfb_cipher aes_cfb_cipher |
0f113f3e MC |
531 | static int aes_t4_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
532 | const unsigned char *in, size_t len); | |
533 | ||
5158c763 | 534 | # define aes_t4_cfb8_cipher aes_cfb8_cipher |
0f113f3e MC |
535 | static int aes_t4_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
536 | const unsigned char *in, size_t len); | |
537 | ||
5158c763 | 538 | # define aes_t4_cfb1_cipher aes_cfb1_cipher |
0f113f3e MC |
539 | static int aes_t4_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
540 | const unsigned char *in, size_t len); | |
541 | ||
5158c763 | 542 | # define aes_t4_ctr_cipher aes_ctr_cipher |
c5f6da54 | 543 | static int aes_t4_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 544 | const unsigned char *in, size_t len); |
c5f6da54 AP |
545 | |
546 | static int aes_t4_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
547 | const unsigned char *iv, int enc) |
548 | { | |
6435f0f6 | 549 | EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,ctx); |
0f113f3e MC |
550 | if (!iv && !key) |
551 | return 1; | |
552 | if (key) { | |
ed576acd | 553 | int bits = EVP_CIPHER_CTX_get_key_length(ctx) * 8; |
0f113f3e MC |
554 | aes_t4_set_encrypt_key(key, bits, &gctx->ks.ks); |
555 | CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, | |
556 | (block128_f) aes_t4_encrypt); | |
557 | switch (bits) { | |
558 | case 128: | |
559 | gctx->ctr = (ctr128_f) aes128_t4_ctr32_encrypt; | |
560 | break; | |
561 | case 192: | |
562 | gctx->ctr = (ctr128_f) aes192_t4_ctr32_encrypt; | |
563 | break; | |
564 | case 256: | |
565 | gctx->ctr = (ctr128_f) aes256_t4_ctr32_encrypt; | |
566 | break; | |
567 | default: | |
568 | return 0; | |
569 | } | |
570 | /* | |
571 | * If we have an iv can set it directly, otherwise use saved IV. | |
572 | */ | |
573 | if (iv == NULL && gctx->iv_set) | |
574 | iv = gctx->iv; | |
575 | if (iv) { | |
576 | CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); | |
577 | gctx->iv_set = 1; | |
578 | } | |
579 | gctx->key_set = 1; | |
580 | } else { | |
581 | /* If key set use IV, otherwise copy */ | |
582 | if (gctx->key_set) | |
583 | CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); | |
584 | else | |
585 | memcpy(gctx->iv, iv, gctx->ivlen); | |
586 | gctx->iv_set = 1; | |
587 | gctx->iv_gen = 0; | |
588 | } | |
589 | return 1; | |
590 | } | |
591 | ||
5158c763 | 592 | # define aes_t4_gcm_cipher aes_gcm_cipher |
c5f6da54 | 593 | static int aes_t4_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 594 | const unsigned char *in, size_t len); |
c5f6da54 AP |
595 | |
596 | static int aes_t4_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
597 | const unsigned char *iv, int enc) |
598 | { | |
6435f0f6 | 599 | EVP_AES_XTS_CTX *xctx = EVP_C_DATA(EVP_AES_XTS_CTX,ctx); |
2c840201 | 600 | |
0f113f3e MC |
601 | if (!iv && !key) |
602 | return 1; | |
603 | ||
604 | if (key) { | |
3538b0f7 | 605 | /* The key is two half length keys in reality */ |
ed576acd | 606 | const int bytes = EVP_CIPHER_CTX_get_key_length(ctx) / 2; |
3538b0f7 P |
607 | const int bits = bytes * 8; |
608 | ||
609 | /* | |
610 | * Verify that the two keys are different. | |
4bd8b240 | 611 | * |
3538b0f7 P |
612 | * This addresses Rogaway's vulnerability. |
613 | * See comment in aes_xts_init_key() below. | |
614 | */ | |
2c840201 P |
615 | if ((!allow_insecure_decrypt || enc) |
616 | && CRYPTO_memcmp(key, key + bytes, bytes) == 0) { | |
9311d0c4 | 617 | ERR_raise(ERR_LIB_EVP, EVP_R_XTS_DUPLICATED_KEYS); |
3538b0f7 P |
618 | return 0; |
619 | } | |
620 | ||
0f113f3e MC |
621 | xctx->stream = NULL; |
622 | /* key_len is two AES keys */ | |
623 | if (enc) { | |
624 | aes_t4_set_encrypt_key(key, bits, &xctx->ks1.ks); | |
625 | xctx->xts.block1 = (block128_f) aes_t4_encrypt; | |
626 | switch (bits) { | |
627 | case 128: | |
628 | xctx->stream = aes128_t4_xts_encrypt; | |
629 | break; | |
0f113f3e MC |
630 | case 256: |
631 | xctx->stream = aes256_t4_xts_encrypt; | |
632 | break; | |
633 | default: | |
634 | return 0; | |
635 | } | |
636 | } else { | |
3538b0f7 | 637 | aes_t4_set_decrypt_key(key, bits, &xctx->ks1.ks); |
0f113f3e MC |
638 | xctx->xts.block1 = (block128_f) aes_t4_decrypt; |
639 | switch (bits) { | |
640 | case 128: | |
641 | xctx->stream = aes128_t4_xts_decrypt; | |
642 | break; | |
0f113f3e MC |
643 | case 256: |
644 | xctx->stream = aes256_t4_xts_decrypt; | |
645 | break; | |
646 | default: | |
647 | return 0; | |
648 | } | |
649 | } | |
650 | ||
3538b0f7 | 651 | aes_t4_set_encrypt_key(key + bytes, bits, &xctx->ks2.ks); |
0f113f3e MC |
652 | xctx->xts.block2 = (block128_f) aes_t4_encrypt; |
653 | ||
654 | xctx->xts.key1 = &xctx->ks1; | |
655 | } | |
656 | ||
657 | if (iv) { | |
658 | xctx->xts.key2 = &xctx->ks2; | |
9197c226 | 659 | memcpy(ctx->iv, iv, 16); |
0f113f3e MC |
660 | } |
661 | ||
662 | return 1; | |
663 | } | |
664 | ||
5158c763 | 665 | # define aes_t4_xts_cipher aes_xts_cipher |
c5f6da54 | 666 | static int aes_t4_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 667 | const unsigned char *in, size_t len); |
c5f6da54 AP |
668 | |
669 | static int aes_t4_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
670 | const unsigned char *iv, int enc) |
671 | { | |
6435f0f6 | 672 | EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,ctx); |
0f113f3e MC |
673 | if (!iv && !key) |
674 | return 1; | |
675 | if (key) { | |
ed576acd | 676 | int bits = EVP_CIPHER_CTX_get_key_length(ctx) * 8; |
0f113f3e MC |
677 | aes_t4_set_encrypt_key(key, bits, &cctx->ks.ks); |
678 | CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, | |
679 | &cctx->ks, (block128_f) aes_t4_encrypt); | |
bdc985b1 | 680 | cctx->str = NULL; |
0f113f3e MC |
681 | cctx->key_set = 1; |
682 | } | |
683 | if (iv) { | |
9197c226 | 684 | memcpy(ctx->iv, iv, 15 - cctx->L); |
0f113f3e MC |
685 | cctx->iv_set = 1; |
686 | } | |
687 | return 1; | |
688 | } | |
689 | ||
5158c763 | 690 | # define aes_t4_ccm_cipher aes_ccm_cipher |
c5f6da54 | 691 | static int aes_t4_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 692 | const unsigned char *in, size_t len); |
c5f6da54 | 693 | |
5158c763 | 694 | # ifndef OPENSSL_NO_OCB |
e6b336ef | 695 | static int aes_t4_ocb_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, |
0f113f3e MC |
696 | const unsigned char *iv, int enc) |
697 | { | |
6435f0f6 | 698 | EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,ctx); |
0f113f3e MC |
699 | if (!iv && !key) |
700 | return 1; | |
701 | if (key) { | |
702 | do { | |
703 | /* | |
704 | * We set both the encrypt and decrypt key here because decrypt | |
705 | * needs both. We could possibly optimise to remove setting the | |
706 | * decrypt for an encryption operation. | |
707 | */ | |
ed576acd | 708 | aes_t4_set_encrypt_key(key, EVP_CIPHER_CTX_get_key_length(ctx) * 8, |
6435f0f6 | 709 | &octx->ksenc.ks); |
ed576acd | 710 | aes_t4_set_decrypt_key(key, EVP_CIPHER_CTX_get_key_length(ctx) * 8, |
6435f0f6 | 711 | &octx->ksdec.ks); |
bdc985b1 AP |
712 | if (!CRYPTO_ocb128_init(&octx->ocb, |
713 | &octx->ksenc.ks, &octx->ksdec.ks, | |
0f113f3e | 714 | (block128_f) aes_t4_encrypt, |
02dc0b82 AP |
715 | (block128_f) aes_t4_decrypt, |
716 | NULL)) | |
0f113f3e MC |
717 | return 0; |
718 | } | |
719 | while (0); | |
720 | ||
721 | /* | |
722 | * If we have an iv we can set it directly, otherwise use saved IV. | |
723 | */ | |
724 | if (iv == NULL && octx->iv_set) | |
725 | iv = octx->iv; | |
726 | if (iv) { | |
727 | if (CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen) | |
728 | != 1) | |
729 | return 0; | |
730 | octx->iv_set = 1; | |
731 | } | |
732 | octx->key_set = 1; | |
733 | } else { | |
734 | /* If key set use IV, otherwise copy */ | |
735 | if (octx->key_set) | |
736 | CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen); | |
737 | else | |
738 | memcpy(octx->iv, iv, octx->ivlen); | |
739 | octx->iv_set = 1; | |
740 | } | |
741 | return 1; | |
742 | } | |
743 | ||
5158c763 | 744 | # define aes_t4_ocb_cipher aes_ocb_cipher |
e6b336ef | 745 | static int aes_t4_ocb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 746 | const unsigned char *in, size_t len); |
5158c763 | 747 | # endif /* OPENSSL_NO_OCB */ |
e6b336ef | 748 | |
87d06aed MC |
749 | # ifndef OPENSSL_NO_SIV |
750 | # define aes_t4_siv_init_key aes_siv_init_key | |
751 | # define aes_t4_siv_cipher aes_siv_cipher | |
752 | # endif /* OPENSSL_NO_SIV */ | |
753 | ||
5158c763 | 754 | # define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \ |
c5f6da54 | 755 | static const EVP_CIPHER aes_t4_##keylen##_##mode = { \ |
0f113f3e MC |
756 | nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \ |
757 | flags|EVP_CIPH_##MODE##_MODE, \ | |
f6c95e46 | 758 | EVP_ORIG_GLOBAL, \ |
0f113f3e MC |
759 | aes_t4_init_key, \ |
760 | aes_t4_##mode##_cipher, \ | |
761 | NULL, \ | |
762 | sizeof(EVP_AES_KEY), \ | |
763 | NULL,NULL,NULL,NULL }; \ | |
c5f6da54 | 764 | static const EVP_CIPHER aes_##keylen##_##mode = { \ |
0f113f3e MC |
765 | nid##_##keylen##_##nmode,blocksize, \ |
766 | keylen/8,ivlen, \ | |
767 | flags|EVP_CIPH_##MODE##_MODE, \ | |
f6c95e46 | 768 | EVP_ORIG_GLOBAL, \ |
0f113f3e MC |
769 | aes_init_key, \ |
770 | aes_##mode##_cipher, \ | |
771 | NULL, \ | |
772 | sizeof(EVP_AES_KEY), \ | |
773 | NULL,NULL,NULL,NULL }; \ | |
c5f6da54 AP |
774 | const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ |
775 | { return SPARC_AES_CAPABLE?&aes_t4_##keylen##_##mode:&aes_##keylen##_##mode; } | |
776 | ||
5158c763 | 777 | # define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \ |
c5f6da54 | 778 | static const EVP_CIPHER aes_t4_##keylen##_##mode = { \ |
0f113f3e | 779 | nid##_##keylen##_##mode,blocksize, \ |
b1ceb439 TS |
780 | (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE||EVP_CIPH_##MODE##_MODE==EVP_CIPH_SIV_MODE?2:1)*keylen/8, \ |
781 | ivlen, \ | |
0f113f3e | 782 | flags|EVP_CIPH_##MODE##_MODE, \ |
f6c95e46 | 783 | EVP_ORIG_GLOBAL, \ |
0f113f3e MC |
784 | aes_t4_##mode##_init_key, \ |
785 | aes_t4_##mode##_cipher, \ | |
786 | aes_##mode##_cleanup, \ | |
787 | sizeof(EVP_AES_##MODE##_CTX), \ | |
788 | NULL,NULL,aes_##mode##_ctrl,NULL }; \ | |
c5f6da54 | 789 | static const EVP_CIPHER aes_##keylen##_##mode = { \ |
0f113f3e | 790 | nid##_##keylen##_##mode,blocksize, \ |
b1ceb439 TS |
791 | (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE||EVP_CIPH_##MODE##_MODE==EVP_CIPH_SIV_MODE?2:1)*keylen/8, \ |
792 | ivlen, \ | |
0f113f3e | 793 | flags|EVP_CIPH_##MODE##_MODE, \ |
f6c95e46 | 794 | EVP_ORIG_GLOBAL, \ |
0f113f3e MC |
795 | aes_##mode##_init_key, \ |
796 | aes_##mode##_cipher, \ | |
797 | aes_##mode##_cleanup, \ | |
798 | sizeof(EVP_AES_##MODE##_CTX), \ | |
799 | NULL,NULL,aes_##mode##_ctrl,NULL }; \ | |
c5f6da54 AP |
800 | const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ |
801 | { return SPARC_AES_CAPABLE?&aes_t4_##keylen##_##mode:&aes_##keylen##_##mode; } | |
802 | ||
459b15d4 SL |
803 | #elif defined(S390X_aes_128_CAPABLE) |
804 | /* IBM S390X support */ | |
55bd169f PS |
805 | typedef struct { |
806 | union { | |
39147079 | 807 | OSSL_UNION_ALIGN; |
55bd169f PS |
808 | /*- |
809 | * KM-AES parameter block - begin | |
810 | * (see z/Architecture Principles of Operation >= SA22-7832-06) | |
811 | */ | |
812 | struct { | |
813 | unsigned char k[32]; | |
814 | } param; | |
815 | /* KM-AES parameter block - end */ | |
816 | } km; | |
817 | unsigned int fc; | |
818 | } S390X_AES_ECB_CTX; | |
819 | ||
dacd2a87 PS |
820 | typedef struct { |
821 | union { | |
39147079 | 822 | OSSL_UNION_ALIGN; |
dacd2a87 PS |
823 | /*- |
824 | * KMO-AES parameter block - begin | |
825 | * (see z/Architecture Principles of Operation >= SA22-7832-08) | |
826 | */ | |
827 | struct { | |
828 | unsigned char cv[16]; | |
829 | unsigned char k[32]; | |
830 | } param; | |
831 | /* KMO-AES parameter block - end */ | |
832 | } kmo; | |
833 | unsigned int fc; | |
834 | ||
835 | int res; | |
836 | } S390X_AES_OFB_CTX; | |
837 | ||
74d38a86 PS |
838 | typedef struct { |
839 | union { | |
39147079 | 840 | OSSL_UNION_ALIGN; |
74d38a86 PS |
841 | /*- |
842 | * KMF-AES parameter block - begin | |
843 | * (see z/Architecture Principles of Operation >= SA22-7832-08) | |
844 | */ | |
845 | struct { | |
846 | unsigned char cv[16]; | |
847 | unsigned char k[32]; | |
848 | } param; | |
849 | /* KMF-AES parameter block - end */ | |
850 | } kmf; | |
851 | unsigned int fc; | |
852 | ||
853 | int res; | |
854 | } S390X_AES_CFB_CTX; | |
855 | ||
96530eea PS |
856 | typedef struct { |
857 | union { | |
39147079 | 858 | OSSL_UNION_ALIGN; |
96530eea | 859 | /*- |
5d2a6f4b PS |
860 | * KMA-GCM-AES parameter block - begin |
861 | * (see z/Architecture Principles of Operation >= SA22-7832-11) | |
96530eea PS |
862 | */ |
863 | struct { | |
864 | unsigned char reserved[12]; | |
865 | union { | |
866 | unsigned int w; | |
867 | unsigned char b[4]; | |
868 | } cv; | |
869 | union { | |
870 | unsigned long long g[2]; | |
871 | unsigned char b[16]; | |
872 | } t; | |
873 | unsigned char h[16]; | |
874 | unsigned long long taadl; | |
875 | unsigned long long tpcl; | |
876 | union { | |
877 | unsigned long long g[2]; | |
878 | unsigned int w[4]; | |
879 | } j0; | |
880 | unsigned char k[32]; | |
881 | } param; | |
5d2a6f4b | 882 | /* KMA-GCM-AES parameter block - end */ |
96530eea PS |
883 | } kma; |
884 | unsigned int fc; | |
885 | int key_set; | |
886 | ||
887 | unsigned char *iv; | |
888 | int ivlen; | |
889 | int iv_set; | |
890 | int iv_gen; | |
891 | ||
892 | int taglen; | |
893 | ||
894 | unsigned char ares[16]; | |
895 | unsigned char mres[16]; | |
896 | unsigned char kres[16]; | |
897 | int areslen; | |
898 | int mreslen; | |
899 | int kreslen; | |
900 | ||
901 | int tls_aad_len; | |
d6b34570 | 902 | uint64_t tls_enc_records; /* Number of TLS records encrypted */ |
96530eea PS |
903 | } S390X_AES_GCM_CTX; |
904 | ||
39f5b069 PS |
905 | typedef struct { |
906 | union { | |
39147079 | 907 | OSSL_UNION_ALIGN; |
39f5b069 PS |
908 | /*- |
909 | * Padding is chosen so that ccm.kmac_param.k overlaps with key.k and | |
910 | * ccm.fc with key.k.rounds. Remember that on s390x, an AES_KEY's | |
911 | * rounds field is used to store the function code and that the key | |
912 | * schedule is not stored (if aes hardware support is detected). | |
913 | */ | |
914 | struct { | |
915 | unsigned char pad[16]; | |
916 | AES_KEY k; | |
917 | } key; | |
918 | ||
919 | struct { | |
920 | /*- | |
921 | * KMAC-AES parameter block - begin | |
922 | * (see z/Architecture Principles of Operation >= SA22-7832-08) | |
923 | */ | |
924 | struct { | |
925 | union { | |
926 | unsigned long long g[2]; | |
927 | unsigned char b[16]; | |
928 | } icv; | |
929 | unsigned char k[32]; | |
930 | } kmac_param; | |
79c44b4e | 931 | /* KMAC-AES parameter block - end */ |
39f5b069 PS |
932 | |
933 | union { | |
934 | unsigned long long g[2]; | |
935 | unsigned char b[16]; | |
936 | } nonce; | |
937 | union { | |
938 | unsigned long long g[2]; | |
939 | unsigned char b[16]; | |
940 | } buf; | |
941 | ||
942 | unsigned long long blocks; | |
943 | int l; | |
944 | int m; | |
945 | int tls_aad_len; | |
946 | int iv_set; | |
947 | int tag_set; | |
948 | int len_set; | |
949 | int key_set; | |
950 | ||
951 | unsigned char pad[140]; | |
952 | unsigned int fc; | |
953 | } ccm; | |
954 | } aes; | |
955 | } S390X_AES_CCM_CTX; | |
956 | ||
96530eea PS |
957 | # define s390x_aes_init_key aes_init_key |
958 | static int s390x_aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
959 | const unsigned char *iv, int enc); | |
960 | ||
dd6b2706 | 961 | # define S390X_AES_CBC_CTX EVP_AES_KEY |
55bd169f PS |
962 | |
963 | # define s390x_aes_cbc_init_key aes_init_key | |
96530eea PS |
964 | |
965 | # define s390x_aes_cbc_cipher aes_cbc_cipher | |
966 | static int s390x_aes_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
967 | const unsigned char *in, size_t len); | |
968 | ||
55bd169f PS |
969 | static int s390x_aes_ecb_init_key(EVP_CIPHER_CTX *ctx, |
970 | const unsigned char *key, | |
971 | const unsigned char *iv, int enc) | |
972 | { | |
973 | S390X_AES_ECB_CTX *cctx = EVP_C_DATA(S390X_AES_ECB_CTX, ctx); | |
ed576acd | 974 | const int keylen = EVP_CIPHER_CTX_get_key_length(ctx); |
55bd169f PS |
975 | |
976 | cctx->fc = S390X_AES_FC(keylen); | |
977 | if (!enc) | |
978 | cctx->fc |= S390X_DECRYPT; | |
979 | ||
980 | memcpy(cctx->km.param.k, key, keylen); | |
981 | return 1; | |
982 | } | |
96530eea | 983 | |
96530eea | 984 | static int s390x_aes_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
55bd169f PS |
985 | const unsigned char *in, size_t len) |
986 | { | |
987 | S390X_AES_ECB_CTX *cctx = EVP_C_DATA(S390X_AES_ECB_CTX, ctx); | |
988 | ||
989 | s390x_km(in, len, out, cctx->fc, &cctx->km.param); | |
990 | return 1; | |
991 | } | |
96530eea | 992 | |
dacd2a87 PS |
993 | static int s390x_aes_ofb_init_key(EVP_CIPHER_CTX *ctx, |
994 | const unsigned char *key, | |
995 | const unsigned char *ivec, int enc) | |
996 | { | |
997 | S390X_AES_OFB_CTX *cctx = EVP_C_DATA(S390X_AES_OFB_CTX, ctx); | |
9197c226 | 998 | const unsigned char *iv = ctx->oiv; |
ed576acd TM |
999 | const int keylen = EVP_CIPHER_CTX_get_key_length(ctx); |
1000 | const int ivlen = EVP_CIPHER_CTX_get_iv_length(ctx); | |
55bd169f | 1001 | |
dacd2a87 PS |
1002 | memcpy(cctx->kmo.param.cv, iv, ivlen); |
1003 | memcpy(cctx->kmo.param.k, key, keylen); | |
1004 | cctx->fc = S390X_AES_FC(keylen); | |
1005 | cctx->res = 0; | |
1006 | return 1; | |
1007 | } | |
96530eea | 1008 | |
96530eea | 1009 | static int s390x_aes_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
dacd2a87 PS |
1010 | const unsigned char *in, size_t len) |
1011 | { | |
1012 | S390X_AES_OFB_CTX *cctx = EVP_C_DATA(S390X_AES_OFB_CTX, ctx); | |
c719ea17 IF |
1013 | const int ivlen = EVP_CIPHER_CTX_get_iv_length(ctx); |
1014 | unsigned char *iv = EVP_CIPHER_CTX_iv_noconst(ctx); | |
dacd2a87 PS |
1015 | int n = cctx->res; |
1016 | int rem; | |
1017 | ||
c719ea17 | 1018 | memcpy(cctx->kmo.param.cv, iv, ivlen); |
dacd2a87 PS |
1019 | while (n && len) { |
1020 | *out = *in ^ cctx->kmo.param.cv[n]; | |
1021 | n = (n + 1) & 0xf; | |
1022 | --len; | |
1023 | ++in; | |
1024 | ++out; | |
1025 | } | |
1026 | ||
1027 | rem = len & 0xf; | |
1028 | ||
1029 | len &= ~(size_t)0xf; | |
1030 | if (len) { | |
1031 | s390x_kmo(in, len, out, cctx->fc, &cctx->kmo.param); | |
1032 | ||
1033 | out += len; | |
1034 | in += len; | |
1035 | } | |
1036 | ||
1037 | if (rem) { | |
1038 | s390x_km(cctx->kmo.param.cv, 16, cctx->kmo.param.cv, cctx->fc, | |
1039 | cctx->kmo.param.k); | |
1040 | ||
1041 | while (rem--) { | |
1042 | out[n] = in[n] ^ cctx->kmo.param.cv[n]; | |
1043 | ++n; | |
1044 | } | |
1045 | } | |
1046 | ||
c719ea17 | 1047 | memcpy(iv, cctx->kmo.param.cv, ivlen); |
dacd2a87 PS |
1048 | cctx->res = n; |
1049 | return 1; | |
1050 | } | |
96530eea | 1051 | |
74d38a86 PS |
1052 | static int s390x_aes_cfb_init_key(EVP_CIPHER_CTX *ctx, |
1053 | const unsigned char *key, | |
1054 | const unsigned char *ivec, int enc) | |
1055 | { | |
1056 | S390X_AES_CFB_CTX *cctx = EVP_C_DATA(S390X_AES_CFB_CTX, ctx); | |
9197c226 | 1057 | const unsigned char *iv = ctx->oiv; |
ed576acd TM |
1058 | const int keylen = EVP_CIPHER_CTX_get_key_length(ctx); |
1059 | const int ivlen = EVP_CIPHER_CTX_get_iv_length(ctx); | |
74d38a86 PS |
1060 | |
1061 | cctx->fc = S390X_AES_FC(keylen); | |
1062 | cctx->fc |= 16 << 24; /* 16 bytes cipher feedback */ | |
1063 | if (!enc) | |
1064 | cctx->fc |= S390X_DECRYPT; | |
55bd169f | 1065 | |
74d38a86 PS |
1066 | cctx->res = 0; |
1067 | memcpy(cctx->kmf.param.cv, iv, ivlen); | |
1068 | memcpy(cctx->kmf.param.k, key, keylen); | |
1069 | return 1; | |
1070 | } | |
96530eea | 1071 | |
96530eea | 1072 | static int s390x_aes_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
74d38a86 PS |
1073 | const unsigned char *in, size_t len) |
1074 | { | |
1075 | S390X_AES_CFB_CTX *cctx = EVP_C_DATA(S390X_AES_CFB_CTX, ctx); | |
ed576acd TM |
1076 | const int keylen = EVP_CIPHER_CTX_get_key_length(ctx); |
1077 | const int enc = EVP_CIPHER_CTX_is_encrypting(ctx); | |
c719ea17 IF |
1078 | const int ivlen = EVP_CIPHER_CTX_get_iv_length(ctx); |
1079 | unsigned char *iv = EVP_CIPHER_CTX_iv_noconst(ctx); | |
74d38a86 PS |
1080 | int n = cctx->res; |
1081 | int rem; | |
1082 | unsigned char tmp; | |
1083 | ||
c719ea17 | 1084 | memcpy(cctx->kmf.param.cv, iv, ivlen); |
74d38a86 PS |
1085 | while (n && len) { |
1086 | tmp = *in; | |
1087 | *out = cctx->kmf.param.cv[n] ^ tmp; | |
1088 | cctx->kmf.param.cv[n] = enc ? *out : tmp; | |
1089 | n = (n + 1) & 0xf; | |
1090 | --len; | |
1091 | ++in; | |
1092 | ++out; | |
1093 | } | |
1094 | ||
1095 | rem = len & 0xf; | |
1096 | ||
1097 | len &= ~(size_t)0xf; | |
1098 | if (len) { | |
1099 | s390x_kmf(in, len, out, cctx->fc, &cctx->kmf.param); | |
1100 | ||
1101 | out += len; | |
1102 | in += len; | |
1103 | } | |
1104 | ||
1105 | if (rem) { | |
1106 | s390x_km(cctx->kmf.param.cv, 16, cctx->kmf.param.cv, | |
1107 | S390X_AES_FC(keylen), cctx->kmf.param.k); | |
1108 | ||
1109 | while (rem--) { | |
1110 | tmp = in[n]; | |
1111 | out[n] = cctx->kmf.param.cv[n] ^ tmp; | |
1112 | cctx->kmf.param.cv[n] = enc ? out[n] : tmp; | |
1113 | ++n; | |
1114 | } | |
1115 | } | |
96530eea | 1116 | |
c719ea17 | 1117 | memcpy(iv, cctx->kmf.param.cv, ivlen); |
74d38a86 PS |
1118 | cctx->res = n; |
1119 | return 1; | |
1120 | } | |
1121 | ||
74d38a86 PS |
1122 | static int s390x_aes_cfb8_init_key(EVP_CIPHER_CTX *ctx, |
1123 | const unsigned char *key, | |
1124 | const unsigned char *ivec, int enc) | |
1125 | { | |
1126 | S390X_AES_CFB_CTX *cctx = EVP_C_DATA(S390X_AES_CFB_CTX, ctx); | |
9197c226 | 1127 | const unsigned char *iv = ctx->oiv; |
ed576acd TM |
1128 | const int keylen = EVP_CIPHER_CTX_get_key_length(ctx); |
1129 | const int ivlen = EVP_CIPHER_CTX_get_iv_length(ctx); | |
74d38a86 PS |
1130 | |
1131 | cctx->fc = S390X_AES_FC(keylen); | |
1132 | cctx->fc |= 1 << 24; /* 1 byte cipher feedback */ | |
1133 | if (!enc) | |
1134 | cctx->fc |= S390X_DECRYPT; | |
96530eea | 1135 | |
74d38a86 PS |
1136 | memcpy(cctx->kmf.param.cv, iv, ivlen); |
1137 | memcpy(cctx->kmf.param.k, key, keylen); | |
1138 | return 1; | |
1139 | } | |
55bd169f | 1140 | |
96530eea | 1141 | static int s390x_aes_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
74d38a86 PS |
1142 | const unsigned char *in, size_t len) |
1143 | { | |
1144 | S390X_AES_CFB_CTX *cctx = EVP_C_DATA(S390X_AES_CFB_CTX, ctx); | |
c719ea17 IF |
1145 | const int ivlen = EVP_CIPHER_CTX_get_iv_length(ctx); |
1146 | unsigned char *iv = EVP_CIPHER_CTX_iv_noconst(ctx); | |
74d38a86 | 1147 | |
c719ea17 | 1148 | memcpy(cctx->kmf.param.cv, iv, ivlen); |
74d38a86 | 1149 | s390x_kmf(in, len, out, cctx->fc, &cctx->kmf.param); |
c719ea17 | 1150 | memcpy(iv, cctx->kmf.param.cv, ivlen); |
74d38a86 PS |
1151 | return 1; |
1152 | } | |
96530eea | 1153 | |
55bd169f PS |
1154 | # define s390x_aes_cfb1_init_key aes_init_key |
1155 | ||
96530eea PS |
1156 | # define s390x_aes_cfb1_cipher aes_cfb1_cipher |
1157 | static int s390x_aes_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
1158 | const unsigned char *in, size_t len); | |
1159 | ||
dd6b2706 | 1160 | # define S390X_AES_CTR_CTX EVP_AES_KEY |
55bd169f PS |
1161 | |
1162 | # define s390x_aes_ctr_init_key aes_init_key | |
96530eea PS |
1163 | |
1164 | # define s390x_aes_ctr_cipher aes_ctr_cipher | |
1165 | static int s390x_aes_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
1166 | const unsigned char *in, size_t len); | |
1167 | ||
bcf082d1 | 1168 | /* iv + padding length for iv lengths != 12 */ |
dd6b2706 | 1169 | # define S390X_gcm_ivpadlen(i) ((((i) + 15) >> 4 << 4) + 16) |
96530eea | 1170 | |
5d2a6f4b PS |
1171 | /*- |
1172 | * Process additional authenticated data. Returns 0 on success. Code is | |
1173 | * big-endian. | |
1174 | */ | |
96530eea PS |
1175 | static int s390x_aes_gcm_aad(S390X_AES_GCM_CTX *ctx, const unsigned char *aad, |
1176 | size_t len) | |
1177 | { | |
1178 | unsigned long long alen; | |
1179 | int n, rem; | |
1180 | ||
1181 | if (ctx->kma.param.tpcl) | |
1182 | return -2; | |
1183 | ||
1184 | alen = ctx->kma.param.taadl + len; | |
1185 | if (alen > (U64(1) << 61) || (sizeof(len) == 8 && alen < len)) | |
1186 | return -1; | |
1187 | ctx->kma.param.taadl = alen; | |
1188 | ||
1189 | n = ctx->areslen; | |
1190 | if (n) { | |
1191 | while (n && len) { | |
1192 | ctx->ares[n] = *aad; | |
1193 | n = (n + 1) & 0xf; | |
1194 | ++aad; | |
1195 | --len; | |
1196 | } | |
1197 | /* ctx->ares contains a complete block if offset has wrapped around */ | |
1198 | if (!n) { | |
1199 | s390x_kma(ctx->ares, 16, NULL, 0, NULL, ctx->fc, &ctx->kma.param); | |
1200 | ctx->fc |= S390X_KMA_HS; | |
1201 | } | |
1202 | ctx->areslen = n; | |
1203 | } | |
1204 | ||
1205 | rem = len & 0xf; | |
1206 | ||
25868993 | 1207 | len &= ~(size_t)0xf; |
96530eea PS |
1208 | if (len) { |
1209 | s390x_kma(aad, len, NULL, 0, NULL, ctx->fc, &ctx->kma.param); | |
1210 | aad += len; | |
1211 | ctx->fc |= S390X_KMA_HS; | |
1212 | } | |
1213 | ||
1214 | if (rem) { | |
1215 | ctx->areslen = rem; | |
1216 | ||
1217 | do { | |
1218 | --rem; | |
1219 | ctx->ares[rem] = aad[rem]; | |
1220 | } while (rem); | |
1221 | } | |
1222 | return 0; | |
1223 | } | |
1224 | ||
5d2a6f4b PS |
1225 | /*- |
1226 | * En/de-crypt plain/cipher-text and authenticate ciphertext. Returns 0 for | |
1227 | * success. Code is big-endian. | |
1228 | */ | |
96530eea PS |
1229 | static int s390x_aes_gcm(S390X_AES_GCM_CTX *ctx, const unsigned char *in, |
1230 | unsigned char *out, size_t len) | |
1231 | { | |
1232 | const unsigned char *inptr; | |
1233 | unsigned long long mlen; | |
1234 | union { | |
1235 | unsigned int w[4]; | |
1236 | unsigned char b[16]; | |
1237 | } buf; | |
1238 | size_t inlen; | |
1239 | int n, rem, i; | |
1240 | ||
1241 | mlen = ctx->kma.param.tpcl + len; | |
1242 | if (mlen > ((U64(1) << 36) - 32) || (sizeof(len) == 8 && mlen < len)) | |
1243 | return -1; | |
1244 | ctx->kma.param.tpcl = mlen; | |
1245 | ||
1246 | n = ctx->mreslen; | |
1247 | if (n) { | |
1248 | inptr = in; | |
1249 | inlen = len; | |
1250 | while (n && inlen) { | |
1251 | ctx->mres[n] = *inptr; | |
1252 | n = (n + 1) & 0xf; | |
1253 | ++inptr; | |
1254 | --inlen; | |
1255 | } | |
1256 | /* ctx->mres contains a complete block if offset has wrapped around */ | |
1257 | if (!n) { | |
1258 | s390x_kma(ctx->ares, ctx->areslen, ctx->mres, 16, buf.b, | |
1259 | ctx->fc | S390X_KMA_LAAD, &ctx->kma.param); | |
1260 | ctx->fc |= S390X_KMA_HS; | |
1261 | ctx->areslen = 0; | |
1262 | ||
1263 | /* previous call already encrypted/decrypted its remainder, | |
1264 | * see comment below */ | |
1265 | n = ctx->mreslen; | |
1266 | while (n) { | |
1267 | *out = buf.b[n]; | |
1268 | n = (n + 1) & 0xf; | |
1269 | ++out; | |
1270 | ++in; | |
1271 | --len; | |
1272 | } | |
1273 | ctx->mreslen = 0; | |
1274 | } | |
1275 | } | |
1276 | ||
1277 | rem = len & 0xf; | |
1278 | ||
25868993 | 1279 | len &= ~(size_t)0xf; |
96530eea PS |
1280 | if (len) { |
1281 | s390x_kma(ctx->ares, ctx->areslen, in, len, out, | |
1282 | ctx->fc | S390X_KMA_LAAD, &ctx->kma.param); | |
1283 | in += len; | |
1284 | out += len; | |
1285 | ctx->fc |= S390X_KMA_HS; | |
1286 | ctx->areslen = 0; | |
1287 | } | |
1288 | ||
1289 | /*- | |
1290 | * If there is a remainder, it has to be saved such that it can be | |
1291 | * processed by kma later. However, we also have to do the for-now | |
1292 | * unauthenticated encryption/decryption part here and now... | |
1293 | */ | |
1294 | if (rem) { | |
1295 | if (!ctx->mreslen) { | |
1296 | buf.w[0] = ctx->kma.param.j0.w[0]; | |
1297 | buf.w[1] = ctx->kma.param.j0.w[1]; | |
1298 | buf.w[2] = ctx->kma.param.j0.w[2]; | |
1299 | buf.w[3] = ctx->kma.param.cv.w + 1; | |
1300 | s390x_km(buf.b, 16, ctx->kres, ctx->fc & 0x1f, &ctx->kma.param.k); | |
1301 | } | |
1302 | ||
1303 | n = ctx->mreslen; | |
1304 | for (i = 0; i < rem; i++) { | |
1305 | ctx->mres[n + i] = in[i]; | |
1306 | out[i] = in[i] ^ ctx->kres[n + i]; | |
1307 | } | |
1308 | ||
1309 | ctx->mreslen += rem; | |
1310 | } | |
1311 | return 0; | |
1312 | } | |
1313 | ||
5d2a6f4b PS |
1314 | /*- |
1315 | * Initialize context structure. Code is big-endian. | |
1316 | */ | |
96530eea PS |
1317 | static void s390x_aes_gcm_setiv(S390X_AES_GCM_CTX *ctx, |
1318 | const unsigned char *iv) | |
1319 | { | |
1320 | ctx->kma.param.t.g[0] = 0; | |
1321 | ctx->kma.param.t.g[1] = 0; | |
1322 | ctx->kma.param.tpcl = 0; | |
1323 | ctx->kma.param.taadl = 0; | |
1324 | ctx->mreslen = 0; | |
1325 | ctx->areslen = 0; | |
1326 | ctx->kreslen = 0; | |
1327 | ||
1328 | if (ctx->ivlen == 12) { | |
1329 | memcpy(&ctx->kma.param.j0, iv, ctx->ivlen); | |
1330 | ctx->kma.param.j0.w[3] = 1; | |
1331 | ctx->kma.param.cv.w = 1; | |
1332 | } else { | |
1333 | /* ctx->iv has the right size and is already padded. */ | |
1334 | memcpy(ctx->iv, iv, ctx->ivlen); | |
1335 | s390x_kma(ctx->iv, S390X_gcm_ivpadlen(ctx->ivlen), NULL, 0, NULL, | |
1336 | ctx->fc, &ctx->kma.param); | |
1337 | ctx->fc |= S390X_KMA_HS; | |
1338 | ||
1339 | ctx->kma.param.j0.g[0] = ctx->kma.param.t.g[0]; | |
1340 | ctx->kma.param.j0.g[1] = ctx->kma.param.t.g[1]; | |
1341 | ctx->kma.param.cv.w = ctx->kma.param.j0.w[3]; | |
1342 | ctx->kma.param.t.g[0] = 0; | |
1343 | ctx->kma.param.t.g[1] = 0; | |
1344 | } | |
1345 | } | |
1346 | ||
5d2a6f4b PS |
1347 | /*- |
1348 | * Performs various operations on the context structure depending on control | |
1349 | * type. Returns 1 for success, 0 for failure and -1 for unknown control type. | |
1350 | * Code is big-endian. | |
1351 | */ | |
96530eea PS |
1352 | static int s390x_aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) |
1353 | { | |
1354 | S390X_AES_GCM_CTX *gctx = EVP_C_DATA(S390X_AES_GCM_CTX, c); | |
1355 | S390X_AES_GCM_CTX *gctx_out; | |
1356 | EVP_CIPHER_CTX *out; | |
9197c226 | 1357 | unsigned char *buf; |
96530eea PS |
1358 | int ivlen, enc, len; |
1359 | ||
1360 | switch (type) { | |
1361 | case EVP_CTRL_INIT: | |
ed576acd | 1362 | ivlen = EVP_CIPHER_get_iv_length(c->cipher); |
96530eea PS |
1363 | gctx->key_set = 0; |
1364 | gctx->iv_set = 0; | |
1365 | gctx->ivlen = ivlen; | |
9197c226 | 1366 | gctx->iv = c->iv; |
96530eea PS |
1367 | gctx->taglen = -1; |
1368 | gctx->iv_gen = 0; | |
1369 | gctx->tls_aad_len = -1; | |
1370 | return 1; | |
1371 | ||
7dddf2fc SL |
1372 | case EVP_CTRL_GET_IVLEN: |
1373 | *(int *)ptr = gctx->ivlen; | |
1374 | return 1; | |
1375 | ||
96530eea PS |
1376 | case EVP_CTRL_AEAD_SET_IVLEN: |
1377 | if (arg <= 0) | |
1378 | return 0; | |
1379 | ||
1380 | if (arg != 12) { | |
96530eea PS |
1381 | len = S390X_gcm_ivpadlen(arg); |
1382 | ||
1383 | /* Allocate memory for iv if needed. */ | |
1384 | if (gctx->ivlen == 12 || len > S390X_gcm_ivpadlen(gctx->ivlen)) { | |
9197c226 | 1385 | if (gctx->iv != c->iv) |
96530eea PS |
1386 | OPENSSL_free(gctx->iv); |
1387 | ||
cdb10bae | 1388 | if ((gctx->iv = OPENSSL_malloc(len)) == NULL) { |
9311d0c4 | 1389 | ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE); |
96530eea | 1390 | return 0; |
cdb10bae | 1391 | } |
96530eea PS |
1392 | } |
1393 | /* Add padding. */ | |
1394 | memset(gctx->iv + arg, 0, len - arg - 8); | |
1395 | *((unsigned long long *)(gctx->iv + len - 8)) = arg << 3; | |
1396 | } | |
1397 | gctx->ivlen = arg; | |
1398 | return 1; | |
1399 | ||
1400 | case EVP_CTRL_AEAD_SET_TAG: | |
1401 | buf = EVP_CIPHER_CTX_buf_noconst(c); | |
ed576acd | 1402 | enc = EVP_CIPHER_CTX_is_encrypting(c); |
96530eea PS |
1403 | if (arg <= 0 || arg > 16 || enc) |
1404 | return 0; | |
1405 | ||
1406 | memcpy(buf, ptr, arg); | |
1407 | gctx->taglen = arg; | |
1408 | return 1; | |
1409 | ||
1410 | case EVP_CTRL_AEAD_GET_TAG: | |
ed576acd | 1411 | enc = EVP_CIPHER_CTX_is_encrypting(c); |
96530eea PS |
1412 | if (arg <= 0 || arg > 16 || !enc || gctx->taglen < 0) |
1413 | return 0; | |
1414 | ||
1415 | memcpy(ptr, gctx->kma.param.t.b, arg); | |
1416 | return 1; | |
1417 | ||
1418 | case EVP_CTRL_GCM_SET_IV_FIXED: | |
1419 | /* Special case: -1 length restores whole iv */ | |
1420 | if (arg == -1) { | |
1421 | memcpy(gctx->iv, ptr, gctx->ivlen); | |
1422 | gctx->iv_gen = 1; | |
1423 | return 1; | |
1424 | } | |
1425 | /* | |
1426 | * Fixed field must be at least 4 bytes and invocation field at least | |
1427 | * 8. | |
1428 | */ | |
1429 | if ((arg < 4) || (gctx->ivlen - arg) < 8) | |
1430 | return 0; | |
1431 | ||
1432 | if (arg) | |
1433 | memcpy(gctx->iv, ptr, arg); | |
1434 | ||
ed576acd | 1435 | enc = EVP_CIPHER_CTX_is_encrypting(c); |
16cfc2c9 KR |
1436 | if (enc && RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0) |
1437 | return 0; | |
96530eea PS |
1438 | |
1439 | gctx->iv_gen = 1; | |
1440 | return 1; | |
1441 | ||
1442 | case EVP_CTRL_GCM_IV_GEN: | |
1443 | if (gctx->iv_gen == 0 || gctx->key_set == 0) | |
1444 | return 0; | |
1445 | ||
1446 | s390x_aes_gcm_setiv(gctx, gctx->iv); | |
1447 | ||
1448 | if (arg <= 0 || arg > gctx->ivlen) | |
1449 | arg = gctx->ivlen; | |
1450 | ||
1451 | memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg); | |
1452 | /* | |
1453 | * Invocation field will be at least 8 bytes in size and so no need | |
1454 | * to check wrap around or increment more than last 8 bytes. | |
1455 | */ | |
03a5e5ae | 1456 | ctr64_inc(gctx->iv + gctx->ivlen - 8); |
96530eea PS |
1457 | gctx->iv_set = 1; |
1458 | return 1; | |
1459 | ||
1460 | case EVP_CTRL_GCM_SET_IV_INV: | |
ed576acd | 1461 | enc = EVP_CIPHER_CTX_is_encrypting(c); |
96530eea PS |
1462 | if (gctx->iv_gen == 0 || gctx->key_set == 0 || enc) |
1463 | return 0; | |
1464 | ||
1465 | memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg); | |
1466 | s390x_aes_gcm_setiv(gctx, gctx->iv); | |
1467 | gctx->iv_set = 1; | |
1468 | return 1; | |
1469 | ||
1470 | case EVP_CTRL_AEAD_TLS1_AAD: | |
1471 | /* Save the aad for later use. */ | |
1472 | if (arg != EVP_AEAD_TLS1_AAD_LEN) | |
1473 | return 0; | |
1474 | ||
1475 | buf = EVP_CIPHER_CTX_buf_noconst(c); | |
1476 | memcpy(buf, ptr, arg); | |
1477 | gctx->tls_aad_len = arg; | |
d6b34570 | 1478 | gctx->tls_enc_records = 0; |
96530eea PS |
1479 | |
1480 | len = buf[arg - 2] << 8 | buf[arg - 1]; | |
1481 | /* Correct length for explicit iv. */ | |
1482 | if (len < EVP_GCM_TLS_EXPLICIT_IV_LEN) | |
1483 | return 0; | |
1484 | len -= EVP_GCM_TLS_EXPLICIT_IV_LEN; | |
1485 | ||
1486 | /* If decrypting correct for tag too. */ | |
ed576acd | 1487 | enc = EVP_CIPHER_CTX_is_encrypting(c); |
96530eea PS |
1488 | if (!enc) { |
1489 | if (len < EVP_GCM_TLS_TAG_LEN) | |
1490 | return 0; | |
1491 | len -= EVP_GCM_TLS_TAG_LEN; | |
1492 | } | |
1493 | buf[arg - 2] = len >> 8; | |
1494 | buf[arg - 1] = len & 0xff; | |
1495 | /* Extra padding: tag appended to record. */ | |
1496 | return EVP_GCM_TLS_TAG_LEN; | |
1497 | ||
1498 | case EVP_CTRL_COPY: | |
1499 | out = ptr; | |
1500 | gctx_out = EVP_C_DATA(S390X_AES_GCM_CTX, out); | |
96530eea | 1501 | |
9197c226 BK |
1502 | if (gctx->iv == c->iv) { |
1503 | gctx_out->iv = out->iv; | |
96530eea PS |
1504 | } else { |
1505 | len = S390X_gcm_ivpadlen(gctx->ivlen); | |
1506 | ||
cdb10bae | 1507 | if ((gctx_out->iv = OPENSSL_malloc(len)) == NULL) { |
9311d0c4 | 1508 | ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE); |
96530eea | 1509 | return 0; |
cdb10bae | 1510 | } |
96530eea PS |
1511 | |
1512 | memcpy(gctx_out->iv, gctx->iv, len); | |
1513 | } | |
1514 | return 1; | |
1515 | ||
1516 | default: | |
1517 | return -1; | |
1518 | } | |
1519 | } | |
1520 | ||
5d2a6f4b PS |
1521 | /*- |
1522 | * Set key and/or iv. Returns 1 on success. Otherwise 0 is returned. | |
1523 | */ | |
96530eea PS |
1524 | static int s390x_aes_gcm_init_key(EVP_CIPHER_CTX *ctx, |
1525 | const unsigned char *key, | |
1526 | const unsigned char *iv, int enc) | |
1527 | { | |
1528 | S390X_AES_GCM_CTX *gctx = EVP_C_DATA(S390X_AES_GCM_CTX, ctx); | |
1529 | int keylen; | |
1530 | ||
1531 | if (iv == NULL && key == NULL) | |
1532 | return 1; | |
1533 | ||
1534 | if (key != NULL) { | |
ed576acd | 1535 | keylen = EVP_CIPHER_CTX_get_key_length(ctx); |
96530eea PS |
1536 | memcpy(&gctx->kma.param.k, key, keylen); |
1537 | ||
8eb399fb | 1538 | gctx->fc = S390X_AES_FC(keylen); |
96530eea PS |
1539 | if (!enc) |
1540 | gctx->fc |= S390X_DECRYPT; | |
1541 | ||
1542 | if (iv == NULL && gctx->iv_set) | |
1543 | iv = gctx->iv; | |
1544 | ||
1545 | if (iv != NULL) { | |
1546 | s390x_aes_gcm_setiv(gctx, iv); | |
1547 | gctx->iv_set = 1; | |
1548 | } | |
1549 | gctx->key_set = 1; | |
1550 | } else { | |
1551 | if (gctx->key_set) | |
1552 | s390x_aes_gcm_setiv(gctx, iv); | |
1553 | else | |
1554 | memcpy(gctx->iv, iv, gctx->ivlen); | |
1555 | ||
1556 | gctx->iv_set = 1; | |
1557 | gctx->iv_gen = 0; | |
1558 | } | |
1559 | return 1; | |
1560 | } | |
1561 | ||
5d2a6f4b PS |
1562 | /*- |
1563 | * En/de-crypt and authenticate TLS packet. Returns the number of bytes written | |
1564 | * if successful. Otherwise -1 is returned. Code is big-endian. | |
1565 | */ | |
96530eea PS |
1566 | static int s390x_aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
1567 | const unsigned char *in, size_t len) | |
1568 | { | |
1569 | S390X_AES_GCM_CTX *gctx = EVP_C_DATA(S390X_AES_GCM_CTX, ctx); | |
1570 | const unsigned char *buf = EVP_CIPHER_CTX_buf_noconst(ctx); | |
ed576acd | 1571 | const int enc = EVP_CIPHER_CTX_is_encrypting(ctx); |
96530eea PS |
1572 | int rv = -1; |
1573 | ||
1574 | if (out != in || len < (EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN)) | |
1575 | return -1; | |
1576 | ||
d6b34570 P |
1577 | /* |
1578 | * Check for too many keys as per FIPS 140-2 IG A.5 "Key/IV Pair Uniqueness | |
1579 | * Requirements from SP 800-38D". The requirements is for one party to the | |
1580 | * communication to fail after 2^64 - 1 keys. We do this on the encrypting | |
1581 | * side only. | |
1582 | */ | |
1583 | if (ctx->encrypt && ++gctx->tls_enc_records == 0) { | |
9311d0c4 | 1584 | ERR_raise(ERR_LIB_EVP, EVP_R_TOO_MANY_RECORDS); |
d6b34570 P |
1585 | goto err; |
1586 | } | |
1587 | ||
96530eea PS |
1588 | if (EVP_CIPHER_CTX_ctrl(ctx, enc ? EVP_CTRL_GCM_IV_GEN |
1589 | : EVP_CTRL_GCM_SET_IV_INV, | |
1590 | EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0) | |
1591 | goto err; | |
1592 | ||
1593 | in += EVP_GCM_TLS_EXPLICIT_IV_LEN; | |
1594 | out += EVP_GCM_TLS_EXPLICIT_IV_LEN; | |
1595 | len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN; | |
1596 | ||
1597 | gctx->kma.param.taadl = gctx->tls_aad_len << 3; | |
1598 | gctx->kma.param.tpcl = len << 3; | |
1599 | s390x_kma(buf, gctx->tls_aad_len, in, len, out, | |
1600 | gctx->fc | S390X_KMA_LAAD | S390X_KMA_LPC, &gctx->kma.param); | |
1601 | ||
1602 | if (enc) { | |
1603 | memcpy(out + len, gctx->kma.param.t.b, EVP_GCM_TLS_TAG_LEN); | |
1604 | rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN; | |
1605 | } else { | |
1606 | if (CRYPTO_memcmp(gctx->kma.param.t.b, in + len, | |
1607 | EVP_GCM_TLS_TAG_LEN)) { | |
1608 | OPENSSL_cleanse(out, len); | |
1609 | goto err; | |
1610 | } | |
1611 | rv = len; | |
1612 | } | |
1613 | err: | |
1614 | gctx->iv_set = 0; | |
1615 | gctx->tls_aad_len = -1; | |
1616 | return rv; | |
1617 | } | |
1618 | ||
5d2a6f4b PS |
1619 | /*- |
1620 | * Called from EVP layer to initialize context, process additional | |
1621 | * authenticated data, en/de-crypt plain/cipher-text and authenticate | |
1622 | * ciphertext or process a TLS packet, depending on context. Returns bytes | |
1623 | * written on success. Otherwise -1 is returned. Code is big-endian. | |
1624 | */ | |
96530eea PS |
1625 | static int s390x_aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
1626 | const unsigned char *in, size_t len) | |
1627 | { | |
1628 | S390X_AES_GCM_CTX *gctx = EVP_C_DATA(S390X_AES_GCM_CTX, ctx); | |
1629 | unsigned char *buf, tmp[16]; | |
1630 | int enc; | |
1631 | ||
1632 | if (!gctx->key_set) | |
1633 | return -1; | |
1634 | ||
1635 | if (gctx->tls_aad_len >= 0) | |
1636 | return s390x_aes_gcm_tls_cipher(ctx, out, in, len); | |
1637 | ||
1638 | if (!gctx->iv_set) | |
1639 | return -1; | |
1640 | ||
1641 | if (in != NULL) { | |
1642 | if (out == NULL) { | |
1643 | if (s390x_aes_gcm_aad(gctx, in, len)) | |
1644 | return -1; | |
1645 | } else { | |
1646 | if (s390x_aes_gcm(gctx, in, out, len)) | |
1647 | return -1; | |
1648 | } | |
1649 | return len; | |
1650 | } else { | |
1651 | gctx->kma.param.taadl <<= 3; | |
1652 | gctx->kma.param.tpcl <<= 3; | |
1653 | s390x_kma(gctx->ares, gctx->areslen, gctx->mres, gctx->mreslen, tmp, | |
1654 | gctx->fc | S390X_KMA_LAAD | S390X_KMA_LPC, &gctx->kma.param); | |
1655 | /* recall that we already did en-/decrypt gctx->mres | |
1656 | * and returned it to caller... */ | |
1657 | OPENSSL_cleanse(tmp, gctx->mreslen); | |
1658 | gctx->iv_set = 0; | |
1659 | ||
ed576acd | 1660 | enc = EVP_CIPHER_CTX_is_encrypting(ctx); |
96530eea PS |
1661 | if (enc) { |
1662 | gctx->taglen = 16; | |
1663 | } else { | |
1664 | if (gctx->taglen < 0) | |
1665 | return -1; | |
1666 | ||
1667 | buf = EVP_CIPHER_CTX_buf_noconst(ctx); | |
1668 | if (CRYPTO_memcmp(buf, gctx->kma.param.t.b, gctx->taglen)) | |
1669 | return -1; | |
1670 | } | |
1671 | return 0; | |
1672 | } | |
1673 | } | |
1674 | ||
1675 | static int s390x_aes_gcm_cleanup(EVP_CIPHER_CTX *c) | |
1676 | { | |
1677 | S390X_AES_GCM_CTX *gctx = EVP_C_DATA(S390X_AES_GCM_CTX, c); | |
96530eea PS |
1678 | |
1679 | if (gctx == NULL) | |
1680 | return 0; | |
1681 | ||
9197c226 | 1682 | if (gctx->iv != c->iv) |
96530eea PS |
1683 | OPENSSL_free(gctx->iv); |
1684 | ||
1685 | OPENSSL_cleanse(gctx, sizeof(*gctx)); | |
1686 | return 1; | |
1687 | } | |
1688 | ||
dd6b2706 | 1689 | # define S390X_AES_XTS_CTX EVP_AES_XTS_CTX |
96530eea PS |
1690 | |
1691 | # define s390x_aes_xts_init_key aes_xts_init_key | |
1692 | static int s390x_aes_xts_init_key(EVP_CIPHER_CTX *ctx, | |
1693 | const unsigned char *key, | |
1694 | const unsigned char *iv, int enc); | |
1695 | # define s390x_aes_xts_cipher aes_xts_cipher | |
1696 | static int s390x_aes_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
1697 | const unsigned char *in, size_t len); | |
1698 | # define s390x_aes_xts_ctrl aes_xts_ctrl | |
1699 | static int s390x_aes_xts_ctrl(EVP_CIPHER_CTX *, int type, int arg, void *ptr); | |
1700 | # define s390x_aes_xts_cleanup aes_xts_cleanup | |
1701 | ||
39f5b069 PS |
1702 | /*- |
1703 | * Set nonce and length fields. Code is big-endian. | |
1704 | */ | |
1705 | static inline void s390x_aes_ccm_setiv(S390X_AES_CCM_CTX *ctx, | |
1706 | const unsigned char *nonce, | |
1707 | size_t mlen) | |
1708 | { | |
1709 | ctx->aes.ccm.nonce.b[0] &= ~S390X_CCM_AAD_FLAG; | |
1710 | ctx->aes.ccm.nonce.g[1] = mlen; | |
1711 | memcpy(ctx->aes.ccm.nonce.b + 1, nonce, 15 - ctx->aes.ccm.l); | |
1712 | } | |
1713 | ||
1714 | /*- | |
1715 | * Process additional authenticated data. Code is big-endian. | |
1716 | */ | |
1717 | static void s390x_aes_ccm_aad(S390X_AES_CCM_CTX *ctx, const unsigned char *aad, | |
1718 | size_t alen) | |
1719 | { | |
1720 | unsigned char *ptr; | |
1721 | int i, rem; | |
1722 | ||
1723 | if (!alen) | |
1724 | return; | |
1725 | ||
1726 | ctx->aes.ccm.nonce.b[0] |= S390X_CCM_AAD_FLAG; | |
1727 | ||
1728 | /* Suppress 'type-punned pointer dereference' warning. */ | |
1729 | ptr = ctx->aes.ccm.buf.b; | |
1730 | ||
1731 | if (alen < ((1 << 16) - (1 << 8))) { | |
1732 | *(uint16_t *)ptr = alen; | |
1733 | i = 2; | |
1734 | } else if (sizeof(alen) == 8 | |
1735 | && alen >= (size_t)1 << (32 % (sizeof(alen) * 8))) { | |
1736 | *(uint16_t *)ptr = 0xffff; | |
1737 | *(uint64_t *)(ptr + 2) = alen; | |
1738 | i = 10; | |
1739 | } else { | |
1740 | *(uint16_t *)ptr = 0xfffe; | |
1741 | *(uint32_t *)(ptr + 2) = alen; | |
1742 | i = 6; | |
1743 | } | |
1744 | ||
1745 | while (i < 16 && alen) { | |
1746 | ctx->aes.ccm.buf.b[i] = *aad; | |
1747 | ++aad; | |
1748 | --alen; | |
1749 | ++i; | |
1750 | } | |
1751 | while (i < 16) { | |
1752 | ctx->aes.ccm.buf.b[i] = 0; | |
1753 | ++i; | |
1754 | } | |
1755 | ||
1756 | ctx->aes.ccm.kmac_param.icv.g[0] = 0; | |
1757 | ctx->aes.ccm.kmac_param.icv.g[1] = 0; | |
1758 | s390x_kmac(ctx->aes.ccm.nonce.b, 32, ctx->aes.ccm.fc, | |
1759 | &ctx->aes.ccm.kmac_param); | |
1760 | ctx->aes.ccm.blocks += 2; | |
1761 | ||
1762 | rem = alen & 0xf; | |
25868993 | 1763 | alen &= ~(size_t)0xf; |
39f5b069 PS |
1764 | if (alen) { |
1765 | s390x_kmac(aad, alen, ctx->aes.ccm.fc, &ctx->aes.ccm.kmac_param); | |
1766 | ctx->aes.ccm.blocks += alen >> 4; | |
1767 | aad += alen; | |
1768 | } | |
1769 | if (rem) { | |
1770 | for (i = 0; i < rem; i++) | |
1771 | ctx->aes.ccm.kmac_param.icv.b[i] ^= aad[i]; | |
1772 | ||
1773 | s390x_km(ctx->aes.ccm.kmac_param.icv.b, 16, | |
1774 | ctx->aes.ccm.kmac_param.icv.b, ctx->aes.ccm.fc, | |
1775 | ctx->aes.ccm.kmac_param.k); | |
1776 | ctx->aes.ccm.blocks++; | |
1777 | } | |
1778 | } | |
1779 | ||
1780 | /*- | |
1781 | * En/de-crypt plain/cipher-text. Compute tag from plaintext. Returns 0 for | |
1782 | * success. | |
1783 | */ | |
1784 | static int s390x_aes_ccm(S390X_AES_CCM_CTX *ctx, const unsigned char *in, | |
1785 | unsigned char *out, size_t len, int enc) | |
1786 | { | |
1787 | size_t n, rem; | |
1788 | unsigned int i, l, num; | |
1789 | unsigned char flags; | |
1790 | ||
1791 | flags = ctx->aes.ccm.nonce.b[0]; | |
1792 | if (!(flags & S390X_CCM_AAD_FLAG)) { | |
1793 | s390x_km(ctx->aes.ccm.nonce.b, 16, ctx->aes.ccm.kmac_param.icv.b, | |
1794 | ctx->aes.ccm.fc, ctx->aes.ccm.kmac_param.k); | |
1795 | ctx->aes.ccm.blocks++; | |
1796 | } | |
1797 | l = flags & 0x7; | |
1798 | ctx->aes.ccm.nonce.b[0] = l; | |
1799 | ||
1800 | /*- | |
1801 | * Reconstruct length from encoded length field | |
1802 | * and initialize it with counter value. | |
1803 | */ | |
1804 | n = 0; | |
1805 | for (i = 15 - l; i < 15; i++) { | |
1806 | n |= ctx->aes.ccm.nonce.b[i]; | |
1807 | ctx->aes.ccm.nonce.b[i] = 0; | |
1808 | n <<= 8; | |
1809 | } | |
1810 | n |= ctx->aes.ccm.nonce.b[15]; | |
1811 | ctx->aes.ccm.nonce.b[15] = 1; | |
1812 | ||
1813 | if (n != len) | |
dd6b2706 | 1814 | return -1; /* length mismatch */ |
39f5b069 PS |
1815 | |
1816 | if (enc) { | |
1817 | /* Two operations per block plus one for tag encryption */ | |
1818 | ctx->aes.ccm.blocks += (((len + 15) >> 4) << 1) + 1; | |
1819 | if (ctx->aes.ccm.blocks > (1ULL << 61)) | |
dd6b2706 | 1820 | return -2; /* too much data */ |
39f5b069 PS |
1821 | } |
1822 | ||
1823 | num = 0; | |
1824 | rem = len & 0xf; | |
25868993 | 1825 | len &= ~(size_t)0xf; |
39f5b069 PS |
1826 | |
1827 | if (enc) { | |
1828 | /* mac-then-encrypt */ | |
1829 | if (len) | |
1830 | s390x_kmac(in, len, ctx->aes.ccm.fc, &ctx->aes.ccm.kmac_param); | |
1831 | if (rem) { | |
1832 | for (i = 0; i < rem; i++) | |
1833 | ctx->aes.ccm.kmac_param.icv.b[i] ^= in[len + i]; | |
1834 | ||
1835 | s390x_km(ctx->aes.ccm.kmac_param.icv.b, 16, | |
1836 | ctx->aes.ccm.kmac_param.icv.b, ctx->aes.ccm.fc, | |
1837 | ctx->aes.ccm.kmac_param.k); | |
1838 | } | |
1839 | ||
1840 | CRYPTO_ctr128_encrypt_ctr32(in, out, len + rem, &ctx->aes.key.k, | |
1841 | ctx->aes.ccm.nonce.b, ctx->aes.ccm.buf.b, | |
1842 | &num, (ctr128_f)AES_ctr32_encrypt); | |
1843 | } else { | |
1844 | /* decrypt-then-mac */ | |
1845 | CRYPTO_ctr128_encrypt_ctr32(in, out, len + rem, &ctx->aes.key.k, | |
1846 | ctx->aes.ccm.nonce.b, ctx->aes.ccm.buf.b, | |
1847 | &num, (ctr128_f)AES_ctr32_encrypt); | |
1848 | ||
1849 | if (len) | |
1850 | s390x_kmac(out, len, ctx->aes.ccm.fc, &ctx->aes.ccm.kmac_param); | |
1851 | if (rem) { | |
1852 | for (i = 0; i < rem; i++) | |
1853 | ctx->aes.ccm.kmac_param.icv.b[i] ^= out[len + i]; | |
1854 | ||
1855 | s390x_km(ctx->aes.ccm.kmac_param.icv.b, 16, | |
1856 | ctx->aes.ccm.kmac_param.icv.b, ctx->aes.ccm.fc, | |
1857 | ctx->aes.ccm.kmac_param.k); | |
1858 | } | |
1859 | } | |
1860 | /* encrypt tag */ | |
1861 | for (i = 15 - l; i < 16; i++) | |
1862 | ctx->aes.ccm.nonce.b[i] = 0; | |
1863 | ||
1864 | s390x_km(ctx->aes.ccm.nonce.b, 16, ctx->aes.ccm.buf.b, ctx->aes.ccm.fc, | |
1865 | ctx->aes.ccm.kmac_param.k); | |
1866 | ctx->aes.ccm.kmac_param.icv.g[0] ^= ctx->aes.ccm.buf.g[0]; | |
1867 | ctx->aes.ccm.kmac_param.icv.g[1] ^= ctx->aes.ccm.buf.g[1]; | |
1868 | ||
dd6b2706 | 1869 | ctx->aes.ccm.nonce.b[0] = flags; /* restore flags field */ |
39f5b069 PS |
1870 | return 0; |
1871 | } | |
1872 | ||
1873 | /*- | |
1874 | * En/de-crypt and authenticate TLS packet. Returns the number of bytes written | |
1875 | * if successful. Otherwise -1 is returned. | |
1876 | */ | |
1877 | static int s390x_aes_ccm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
1878 | const unsigned char *in, size_t len) | |
1879 | { | |
1880 | S390X_AES_CCM_CTX *cctx = EVP_C_DATA(S390X_AES_CCM_CTX, ctx); | |
9197c226 | 1881 | unsigned char *ivec = ctx->iv; |
39f5b069 | 1882 | unsigned char *buf = EVP_CIPHER_CTX_buf_noconst(ctx); |
ed576acd | 1883 | const int enc = EVP_CIPHER_CTX_is_encrypting(ctx); |
39f5b069 PS |
1884 | |
1885 | if (out != in | |
1886 | || len < (EVP_CCM_TLS_EXPLICIT_IV_LEN + (size_t)cctx->aes.ccm.m)) | |
1887 | return -1; | |
1888 | ||
1889 | if (enc) { | |
1890 | /* Set explicit iv (sequence number). */ | |
1891 | memcpy(out, buf, EVP_CCM_TLS_EXPLICIT_IV_LEN); | |
1892 | } | |
1893 | ||
1894 | len -= EVP_CCM_TLS_EXPLICIT_IV_LEN + cctx->aes.ccm.m; | |
1895 | /*- | |
1896 | * Get explicit iv (sequence number). We already have fixed iv | |
1897 | * (server/client_write_iv) here. | |
1898 | */ | |
1899 | memcpy(ivec + EVP_CCM_TLS_FIXED_IV_LEN, in, EVP_CCM_TLS_EXPLICIT_IV_LEN); | |
1900 | s390x_aes_ccm_setiv(cctx, ivec, len); | |
1901 | ||
1902 | /* Process aad (sequence number|type|version|length) */ | |
1903 | s390x_aes_ccm_aad(cctx, buf, cctx->aes.ccm.tls_aad_len); | |
1904 | ||
1905 | in += EVP_CCM_TLS_EXPLICIT_IV_LEN; | |
1906 | out += EVP_CCM_TLS_EXPLICIT_IV_LEN; | |
96530eea | 1907 | |
39f5b069 PS |
1908 | if (enc) { |
1909 | if (s390x_aes_ccm(cctx, in, out, len, enc)) | |
1910 | return -1; | |
1911 | ||
1912 | memcpy(out + len, cctx->aes.ccm.kmac_param.icv.b, cctx->aes.ccm.m); | |
1913 | return len + EVP_CCM_TLS_EXPLICIT_IV_LEN + cctx->aes.ccm.m; | |
1914 | } else { | |
1915 | if (!s390x_aes_ccm(cctx, in, out, len, enc)) { | |
1916 | if (!CRYPTO_memcmp(cctx->aes.ccm.kmac_param.icv.b, in + len, | |
1917 | cctx->aes.ccm.m)) | |
1918 | return len; | |
1919 | } | |
1920 | ||
1921 | OPENSSL_cleanse(out, len); | |
1922 | return -1; | |
1923 | } | |
1924 | } | |
1925 | ||
1926 | /*- | |
1927 | * Set key and flag field and/or iv. Returns 1 if successful. Otherwise 0 is | |
1928 | * returned. | |
1929 | */ | |
96530eea PS |
1930 | static int s390x_aes_ccm_init_key(EVP_CIPHER_CTX *ctx, |
1931 | const unsigned char *key, | |
39f5b069 PS |
1932 | const unsigned char *iv, int enc) |
1933 | { | |
1934 | S390X_AES_CCM_CTX *cctx = EVP_C_DATA(S390X_AES_CCM_CTX, ctx); | |
39f5b069 PS |
1935 | int keylen; |
1936 | ||
1937 | if (iv == NULL && key == NULL) | |
1938 | return 1; | |
1939 | ||
1940 | if (key != NULL) { | |
ed576acd | 1941 | keylen = EVP_CIPHER_CTX_get_key_length(ctx); |
8eb399fb | 1942 | cctx->aes.ccm.fc = S390X_AES_FC(keylen); |
39f5b069 PS |
1943 | memcpy(cctx->aes.ccm.kmac_param.k, key, keylen); |
1944 | ||
1945 | /* Store encoded m and l. */ | |
1946 | cctx->aes.ccm.nonce.b[0] = ((cctx->aes.ccm.l - 1) & 0x7) | |
1947 | | (((cctx->aes.ccm.m - 2) >> 1) & 0x7) << 3; | |
1948 | memset(cctx->aes.ccm.nonce.b + 1, 0, | |
1949 | sizeof(cctx->aes.ccm.nonce.b)); | |
1950 | cctx->aes.ccm.blocks = 0; | |
1951 | ||
1952 | cctx->aes.ccm.key_set = 1; | |
1953 | } | |
1954 | ||
1955 | if (iv != NULL) { | |
9197c226 | 1956 | memcpy(ctx->iv, iv, 15 - cctx->aes.ccm.l); |
39f5b069 PS |
1957 | |
1958 | cctx->aes.ccm.iv_set = 1; | |
1959 | } | |
1960 | ||
1961 | return 1; | |
1962 | } | |
1963 | ||
1964 | /*- | |
1965 | * Called from EVP layer to initialize context, process additional | |
1966 | * authenticated data, en/de-crypt plain/cipher-text and authenticate | |
1967 | * plaintext or process a TLS packet, depending on context. Returns bytes | |
1968 | * written on success. Otherwise -1 is returned. | |
1969 | */ | |
96530eea | 1970 | static int s390x_aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
39f5b069 PS |
1971 | const unsigned char *in, size_t len) |
1972 | { | |
1973 | S390X_AES_CCM_CTX *cctx = EVP_C_DATA(S390X_AES_CCM_CTX, ctx); | |
ed576acd | 1974 | const int enc = EVP_CIPHER_CTX_is_encrypting(ctx); |
39f5b069 | 1975 | int rv; |
9197c226 | 1976 | unsigned char *buf; |
39f5b069 PS |
1977 | |
1978 | if (!cctx->aes.ccm.key_set) | |
1979 | return -1; | |
1980 | ||
1981 | if (cctx->aes.ccm.tls_aad_len >= 0) | |
1982 | return s390x_aes_ccm_tls_cipher(ctx, out, in, len); | |
1983 | ||
1984 | /*- | |
1985 | * Final(): Does not return any data. Recall that ccm is mac-then-encrypt | |
1986 | * so integrity must be checked already at Update() i.e., before | |
1987 | * potentially corrupted data is output. | |
1988 | */ | |
1989 | if (in == NULL && out != NULL) | |
1990 | return 0; | |
1991 | ||
1992 | if (!cctx->aes.ccm.iv_set) | |
1993 | return -1; | |
1994 | ||
39f5b069 PS |
1995 | if (out == NULL) { |
1996 | /* Update(): Pass message length. */ | |
1997 | if (in == NULL) { | |
9197c226 | 1998 | s390x_aes_ccm_setiv(cctx, ctx->iv, len); |
39f5b069 PS |
1999 | |
2000 | cctx->aes.ccm.len_set = 1; | |
2001 | return len; | |
2002 | } | |
2003 | ||
2004 | /* Update(): Process aad. */ | |
2005 | if (!cctx->aes.ccm.len_set && len) | |
2006 | return -1; | |
2007 | ||
2008 | s390x_aes_ccm_aad(cctx, in, len); | |
2009 | return len; | |
2010 | } | |
2011 | ||
887e22dd PS |
2012 | /* The tag must be set before actually decrypting data */ |
2013 | if (!enc && !cctx->aes.ccm.tag_set) | |
2014 | return -1; | |
2015 | ||
39f5b069 PS |
2016 | /* Update(): Process message. */ |
2017 | ||
2018 | if (!cctx->aes.ccm.len_set) { | |
2019 | /*- | |
46d08509 | 2020 | * In case message length was not previously set explicitly via |
39f5b069 PS |
2021 | * Update(), set it now. |
2022 | */ | |
9197c226 | 2023 | s390x_aes_ccm_setiv(cctx, ctx->iv, len); |
39f5b069 PS |
2024 | |
2025 | cctx->aes.ccm.len_set = 1; | |
2026 | } | |
2027 | ||
2028 | if (enc) { | |
2029 | if (s390x_aes_ccm(cctx, in, out, len, enc)) | |
2030 | return -1; | |
2031 | ||
2032 | cctx->aes.ccm.tag_set = 1; | |
2033 | return len; | |
2034 | } else { | |
2035 | rv = -1; | |
2036 | ||
2037 | if (!s390x_aes_ccm(cctx, in, out, len, enc)) { | |
2038 | buf = EVP_CIPHER_CTX_buf_noconst(ctx); | |
2039 | if (!CRYPTO_memcmp(cctx->aes.ccm.kmac_param.icv.b, buf, | |
2040 | cctx->aes.ccm.m)) | |
2041 | rv = len; | |
2042 | } | |
2043 | ||
2044 | if (rv == -1) | |
2045 | OPENSSL_cleanse(out, len); | |
2046 | ||
2047 | cctx->aes.ccm.iv_set = 0; | |
2048 | cctx->aes.ccm.tag_set = 0; | |
2049 | cctx->aes.ccm.len_set = 0; | |
2050 | return rv; | |
2051 | } | |
2052 | } | |
2053 | ||
2054 | /*- | |
2055 | * Performs various operations on the context structure depending on control | |
2056 | * type. Returns 1 for success, 0 for failure and -1 for unknown control type. | |
2057 | * Code is big-endian. | |
2058 | */ | |
2059 | static int s390x_aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) | |
2060 | { | |
2061 | S390X_AES_CCM_CTX *cctx = EVP_C_DATA(S390X_AES_CCM_CTX, c); | |
9197c226 | 2062 | unsigned char *buf; |
39f5b069 PS |
2063 | int enc, len; |
2064 | ||
2065 | switch (type) { | |
2066 | case EVP_CTRL_INIT: | |
2067 | cctx->aes.ccm.key_set = 0; | |
2068 | cctx->aes.ccm.iv_set = 0; | |
2069 | cctx->aes.ccm.l = 8; | |
2070 | cctx->aes.ccm.m = 12; | |
2071 | cctx->aes.ccm.tag_set = 0; | |
2072 | cctx->aes.ccm.len_set = 0; | |
2073 | cctx->aes.ccm.tls_aad_len = -1; | |
2074 | return 1; | |
2075 | ||
7dddf2fc SL |
2076 | case EVP_CTRL_GET_IVLEN: |
2077 | *(int *)ptr = 15 - cctx->aes.ccm.l; | |
2078 | return 1; | |
2079 | ||
39f5b069 PS |
2080 | case EVP_CTRL_AEAD_TLS1_AAD: |
2081 | if (arg != EVP_AEAD_TLS1_AAD_LEN) | |
2082 | return 0; | |
2083 | ||
2084 | /* Save the aad for later use. */ | |
2085 | buf = EVP_CIPHER_CTX_buf_noconst(c); | |
2086 | memcpy(buf, ptr, arg); | |
2087 | cctx->aes.ccm.tls_aad_len = arg; | |
2088 | ||
03a5e5ae | 2089 | len = buf[arg - 2] << 8 | buf[arg - 1]; |
39f5b069 PS |
2090 | if (len < EVP_CCM_TLS_EXPLICIT_IV_LEN) |
2091 | return 0; | |
2092 | ||
2093 | /* Correct length for explicit iv. */ | |
2094 | len -= EVP_CCM_TLS_EXPLICIT_IV_LEN; | |
2095 | ||
ed576acd | 2096 | enc = EVP_CIPHER_CTX_is_encrypting(c); |
39f5b069 PS |
2097 | if (!enc) { |
2098 | if (len < cctx->aes.ccm.m) | |
2099 | return 0; | |
2100 | ||
2101 | /* Correct length for tag. */ | |
2102 | len -= cctx->aes.ccm.m; | |
2103 | } | |
2104 | ||
03a5e5ae PS |
2105 | buf[arg - 2] = len >> 8; |
2106 | buf[arg - 1] = len & 0xff; | |
2107 | ||
39f5b069 PS |
2108 | /* Extra padding: tag appended to record. */ |
2109 | return cctx->aes.ccm.m; | |
2110 | ||
2111 | case EVP_CTRL_CCM_SET_IV_FIXED: | |
2112 | if (arg != EVP_CCM_TLS_FIXED_IV_LEN) | |
2113 | return 0; | |
2114 | ||
2115 | /* Copy to first part of the iv. */ | |
9197c226 | 2116 | memcpy(c->iv, ptr, arg); |
39f5b069 PS |
2117 | return 1; |
2118 | ||
2119 | case EVP_CTRL_AEAD_SET_IVLEN: | |
2120 | arg = 15 - arg; | |
2121 | /* fall-through */ | |
2122 | ||
2123 | case EVP_CTRL_CCM_SET_L: | |
2124 | if (arg < 2 || arg > 8) | |
2125 | return 0; | |
2126 | ||
2127 | cctx->aes.ccm.l = arg; | |
2128 | return 1; | |
2129 | ||
2130 | case EVP_CTRL_AEAD_SET_TAG: | |
2131 | if ((arg & 1) || arg < 4 || arg > 16) | |
2132 | return 0; | |
2133 | ||
ed576acd | 2134 | enc = EVP_CIPHER_CTX_is_encrypting(c); |
39f5b069 PS |
2135 | if (enc && ptr) |
2136 | return 0; | |
2137 | ||
2138 | if (ptr) { | |
2139 | cctx->aes.ccm.tag_set = 1; | |
2140 | buf = EVP_CIPHER_CTX_buf_noconst(c); | |
2141 | memcpy(buf, ptr, arg); | |
2142 | } | |
2143 | ||
2144 | cctx->aes.ccm.m = arg; | |
2145 | return 1; | |
2146 | ||
2147 | case EVP_CTRL_AEAD_GET_TAG: | |
ed576acd | 2148 | enc = EVP_CIPHER_CTX_is_encrypting(c); |
39f5b069 PS |
2149 | if (!enc || !cctx->aes.ccm.tag_set) |
2150 | return 0; | |
2151 | ||
1287dabd | 2152 | if (arg < cctx->aes.ccm.m) |
39f5b069 PS |
2153 | return 0; |
2154 | ||
2155 | memcpy(ptr, cctx->aes.ccm.kmac_param.icv.b, cctx->aes.ccm.m); | |
2156 | cctx->aes.ccm.tag_set = 0; | |
2157 | cctx->aes.ccm.iv_set = 0; | |
2158 | cctx->aes.ccm.len_set = 0; | |
2159 | return 1; | |
2160 | ||
2161 | case EVP_CTRL_COPY: | |
2162 | return 1; | |
2163 | ||
2164 | default: | |
2165 | return -1; | |
2166 | } | |
2167 | } | |
2168 | ||
96530eea PS |
2169 | # define s390x_aes_ccm_cleanup aes_ccm_cleanup |
2170 | ||
2171 | # ifndef OPENSSL_NO_OCB | |
dd6b2706 | 2172 | # define S390X_AES_OCB_CTX EVP_AES_OCB_CTX |
96530eea PS |
2173 | |
2174 | # define s390x_aes_ocb_init_key aes_ocb_init_key | |
2175 | static int s390x_aes_ocb_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
2176 | const unsigned char *iv, int enc); | |
2177 | # define s390x_aes_ocb_cipher aes_ocb_cipher | |
2178 | static int s390x_aes_ocb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
2179 | const unsigned char *in, size_t len); | |
2180 | # define s390x_aes_ocb_cleanup aes_ocb_cleanup | |
2181 | static int s390x_aes_ocb_cleanup(EVP_CIPHER_CTX *); | |
2182 | # define s390x_aes_ocb_ctrl aes_ocb_ctrl | |
2183 | static int s390x_aes_ocb_ctrl(EVP_CIPHER_CTX *, int type, int arg, void *ptr); | |
2184 | # endif | |
2185 | ||
e74be3d4 RL |
2186 | # ifndef OPENSSL_NO_SIV |
2187 | # define S390X_AES_SIV_CTX EVP_AES_SIV_CTX | |
e74be3d4 RL |
2188 | |
2189 | # define s390x_aes_siv_init_key aes_siv_init_key | |
2190 | # define s390x_aes_siv_cipher aes_siv_cipher | |
2191 | # define s390x_aes_siv_cleanup aes_siv_cleanup | |
2192 | # define s390x_aes_siv_ctrl aes_siv_ctrl | |
2193 | # endif | |
2194 | ||
dd6b2706 P |
2195 | # define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode, \ |
2196 | MODE,flags) \ | |
2197 | static const EVP_CIPHER s390x_aes_##keylen##_##mode = { \ | |
2198 | nid##_##keylen##_##nmode,blocksize, \ | |
2199 | keylen / 8, \ | |
2200 | ivlen, \ | |
2201 | flags | EVP_CIPH_##MODE##_MODE, \ | |
c39352e4 | 2202 | EVP_ORIG_GLOBAL, \ |
dd6b2706 P |
2203 | s390x_aes_##mode##_init_key, \ |
2204 | s390x_aes_##mode##_cipher, \ | |
2205 | NULL, \ | |
2206 | sizeof(S390X_AES_##MODE##_CTX), \ | |
2207 | NULL, \ | |
2208 | NULL, \ | |
2209 | NULL, \ | |
2210 | NULL \ | |
2211 | }; \ | |
2212 | static const EVP_CIPHER aes_##keylen##_##mode = { \ | |
2213 | nid##_##keylen##_##nmode, \ | |
2214 | blocksize, \ | |
2215 | keylen / 8, \ | |
2216 | ivlen, \ | |
2217 | flags | EVP_CIPH_##MODE##_MODE, \ | |
c39352e4 | 2218 | EVP_ORIG_GLOBAL, \ |
dd6b2706 P |
2219 | aes_init_key, \ |
2220 | aes_##mode##_cipher, \ | |
2221 | NULL, \ | |
2222 | sizeof(EVP_AES_KEY), \ | |
2223 | NULL, \ | |
2224 | NULL, \ | |
2225 | NULL, \ | |
2226 | NULL \ | |
2227 | }; \ | |
2228 | const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ | |
2229 | { \ | |
2230 | return S390X_aes_##keylen##_##mode##_CAPABLE ? \ | |
2231 | &s390x_aes_##keylen##_##mode : &aes_##keylen##_##mode; \ | |
96530eea PS |
2232 | } |
2233 | ||
2234 | # define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags)\ | |
dd6b2706 P |
2235 | static const EVP_CIPHER s390x_aes_##keylen##_##mode = { \ |
2236 | nid##_##keylen##_##mode, \ | |
2237 | blocksize, \ | |
2238 | (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE||EVP_CIPH_##MODE##_MODE==EVP_CIPH_SIV_MODE ? 2 : 1) * keylen / 8, \ | |
2239 | ivlen, \ | |
2240 | flags | EVP_CIPH_##MODE##_MODE, \ | |
c39352e4 | 2241 | EVP_ORIG_GLOBAL, \ |
dd6b2706 P |
2242 | s390x_aes_##mode##_init_key, \ |
2243 | s390x_aes_##mode##_cipher, \ | |
2244 | s390x_aes_##mode##_cleanup, \ | |
2245 | sizeof(S390X_AES_##MODE##_CTX), \ | |
2246 | NULL, \ | |
2247 | NULL, \ | |
2248 | s390x_aes_##mode##_ctrl, \ | |
2249 | NULL \ | |
2250 | }; \ | |
2251 | static const EVP_CIPHER aes_##keylen##_##mode = { \ | |
2252 | nid##_##keylen##_##mode,blocksize, \ | |
2253 | (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE||EVP_CIPH_##MODE##_MODE==EVP_CIPH_SIV_MODE ? 2 : 1) * keylen / 8, \ | |
2254 | ivlen, \ | |
2255 | flags | EVP_CIPH_##MODE##_MODE, \ | |
c39352e4 | 2256 | EVP_ORIG_GLOBAL, \ |
dd6b2706 P |
2257 | aes_##mode##_init_key, \ |
2258 | aes_##mode##_cipher, \ | |
2259 | aes_##mode##_cleanup, \ | |
2260 | sizeof(EVP_AES_##MODE##_CTX), \ | |
2261 | NULL, \ | |
2262 | NULL, \ | |
2263 | aes_##mode##_ctrl, \ | |
2264 | NULL \ | |
2265 | }; \ | |
2266 | const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ | |
2267 | { \ | |
2268 | return S390X_aes_##keylen##_##mode##_CAPABLE ? \ | |
2269 | &s390x_aes_##keylen##_##mode : &aes_##keylen##_##mode; \ | |
96530eea PS |
2270 | } |
2271 | ||
5158c763 | 2272 | #else |
17f121de | 2273 | |
5158c763 | 2274 | # define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \ |
17f121de | 2275 | static const EVP_CIPHER aes_##keylen##_##mode = { \ |
0f113f3e MC |
2276 | nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \ |
2277 | flags|EVP_CIPH_##MODE##_MODE, \ | |
f6c95e46 | 2278 | EVP_ORIG_GLOBAL, \ |
0f113f3e MC |
2279 | aes_init_key, \ |
2280 | aes_##mode##_cipher, \ | |
2281 | NULL, \ | |
2282 | sizeof(EVP_AES_KEY), \ | |
2283 | NULL,NULL,NULL,NULL }; \ | |
17f121de AP |
2284 | const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ |
2285 | { return &aes_##keylen##_##mode; } | |
d1fff483 | 2286 | |
5158c763 | 2287 | # define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \ |
17f121de | 2288 | static const EVP_CIPHER aes_##keylen##_##mode = { \ |
0f113f3e | 2289 | nid##_##keylen##_##mode,blocksize, \ |
b1ceb439 TS |
2290 | (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE||EVP_CIPH_##MODE##_MODE==EVP_CIPH_SIV_MODE?2:1)*keylen/8, \ |
2291 | ivlen, \ | |
0f113f3e | 2292 | flags|EVP_CIPH_##MODE##_MODE, \ |
f6c95e46 | 2293 | EVP_ORIG_GLOBAL, \ |
0f113f3e MC |
2294 | aes_##mode##_init_key, \ |
2295 | aes_##mode##_cipher, \ | |
2296 | aes_##mode##_cleanup, \ | |
2297 | sizeof(EVP_AES_##MODE##_CTX), \ | |
2298 | NULL,NULL,aes_##mode##_ctrl,NULL }; \ | |
17f121de AP |
2299 | const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ |
2300 | { return &aes_##keylen##_##mode; } | |
9575d1a9 | 2301 | |
5158c763 | 2302 | #endif |
9575d1a9 | 2303 | |
5158c763 | 2304 | #define BLOCK_CIPHER_generic_pack(nid,keylen,flags) \ |
0f113f3e MC |
2305 | BLOCK_CIPHER_generic(nid,keylen,16,16,cbc,cbc,CBC,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \ |
2306 | BLOCK_CIPHER_generic(nid,keylen,16,0,ecb,ecb,ECB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \ | |
2307 | BLOCK_CIPHER_generic(nid,keylen,1,16,ofb128,ofb,OFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \ | |
2308 | BLOCK_CIPHER_generic(nid,keylen,1,16,cfb128,cfb,CFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \ | |
2309 | BLOCK_CIPHER_generic(nid,keylen,1,16,cfb1,cfb1,CFB,flags) \ | |
2310 | BLOCK_CIPHER_generic(nid,keylen,1,16,cfb8,cfb8,CFB,flags) \ | |
2311 | BLOCK_CIPHER_generic(nid,keylen,1,16,ctr,ctr,CTR,flags) | |
d1fff483 AP |
2312 | |
2313 | static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
2314 | const unsigned char *iv, int enc) |
2315 | { | |
2316 | int ret, mode; | |
6435f0f6 | 2317 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); |
0f113f3e | 2318 | |
ed576acd | 2319 | mode = EVP_CIPHER_CTX_get_mode(ctx); |
0f113f3e | 2320 | if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE) |
c01a3c6d | 2321 | && !enc) { |
5158c763 | 2322 | #ifdef HWAES_CAPABLE |
0f113f3e | 2323 | if (HWAES_CAPABLE) { |
6435f0f6 | 2324 | ret = HWAES_set_decrypt_key(key, |
ed576acd | 2325 | EVP_CIPHER_CTX_get_key_length(ctx) * 8, |
6435f0f6 | 2326 | &dat->ks.ks); |
0f113f3e MC |
2327 | dat->block = (block128_f) HWAES_decrypt; |
2328 | dat->stream.cbc = NULL; | |
5158c763 | 2329 | # ifdef HWAES_cbc_encrypt |
0f113f3e MC |
2330 | if (mode == EVP_CIPH_CBC_MODE) |
2331 | dat->stream.cbc = (cbc128_f) HWAES_cbc_encrypt; | |
0f113f3e | 2332 | # endif |
5158c763 MC |
2333 | } else |
2334 | #endif | |
2335 | #ifdef BSAES_CAPABLE | |
0f113f3e | 2336 | if (BSAES_CAPABLE && mode == EVP_CIPH_CBC_MODE) { |
ed576acd TM |
2337 | ret = AES_set_decrypt_key(key, |
2338 | EVP_CIPHER_CTX_get_key_length(ctx) * 8, | |
6435f0f6 | 2339 | &dat->ks.ks); |
0f113f3e | 2340 | dat->block = (block128_f) AES_decrypt; |
3675334e | 2341 | dat->stream.cbc = (cbc128_f) ossl_bsaes_cbc_encrypt; |
0f113f3e | 2342 | } else |
5158c763 MC |
2343 | #endif |
2344 | #ifdef VPAES_CAPABLE | |
0f113f3e | 2345 | if (VPAES_CAPABLE) { |
6435f0f6 | 2346 | ret = vpaes_set_decrypt_key(key, |
ed576acd | 2347 | EVP_CIPHER_CTX_get_key_length(ctx) * 8, |
6435f0f6 | 2348 | &dat->ks.ks); |
0f113f3e MC |
2349 | dat->block = (block128_f) vpaes_decrypt; |
2350 | dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? | |
2351 | (cbc128_f) vpaes_cbc_encrypt : NULL; | |
2352 | } else | |
5158c763 | 2353 | #endif |
0f113f3e | 2354 | { |
6435f0f6 | 2355 | ret = AES_set_decrypt_key(key, |
ed576acd | 2356 | EVP_CIPHER_CTX_get_key_length(ctx) * 8, |
6435f0f6 | 2357 | &dat->ks.ks); |
0f113f3e MC |
2358 | dat->block = (block128_f) AES_decrypt; |
2359 | dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? | |
2360 | (cbc128_f) AES_cbc_encrypt : NULL; | |
c01a3c6d | 2361 | } |
0f113f3e | 2362 | } else |
5158c763 | 2363 | #ifdef HWAES_CAPABLE |
0f113f3e | 2364 | if (HWAES_CAPABLE) { |
ed576acd TM |
2365 | ret = HWAES_set_encrypt_key(key, |
2366 | EVP_CIPHER_CTX_get_key_length(ctx) * 8, | |
6435f0f6 | 2367 | &dat->ks.ks); |
0f113f3e MC |
2368 | dat->block = (block128_f) HWAES_encrypt; |
2369 | dat->stream.cbc = NULL; | |
5158c763 | 2370 | # ifdef HWAES_cbc_encrypt |
0f113f3e MC |
2371 | if (mode == EVP_CIPH_CBC_MODE) |
2372 | dat->stream.cbc = (cbc128_f) HWAES_cbc_encrypt; | |
2373 | else | |
5158c763 MC |
2374 | # endif |
2375 | # ifdef HWAES_ctr32_encrypt_blocks | |
0f113f3e MC |
2376 | if (mode == EVP_CIPH_CTR_MODE) |
2377 | dat->stream.ctr = (ctr128_f) HWAES_ctr32_encrypt_blocks; | |
2378 | else | |
5158c763 | 2379 | # endif |
0f113f3e MC |
2380 | (void)0; /* terminate potentially open 'else' */ |
2381 | } else | |
5158c763 MC |
2382 | #endif |
2383 | #ifdef BSAES_CAPABLE | |
0f113f3e | 2384 | if (BSAES_CAPABLE && mode == EVP_CIPH_CTR_MODE) { |
ed576acd | 2385 | ret = AES_set_encrypt_key(key, EVP_CIPHER_CTX_get_key_length(ctx) * 8, |
6435f0f6 | 2386 | &dat->ks.ks); |
0f113f3e | 2387 | dat->block = (block128_f) AES_encrypt; |
3675334e | 2388 | dat->stream.ctr = (ctr128_f) ossl_bsaes_ctr32_encrypt_blocks; |
0f113f3e | 2389 | } else |
5158c763 MC |
2390 | #endif |
2391 | #ifdef VPAES_CAPABLE | |
0f113f3e | 2392 | if (VPAES_CAPABLE) { |
ed576acd TM |
2393 | ret = vpaes_set_encrypt_key(key, |
2394 | EVP_CIPHER_CTX_get_key_length(ctx) * 8, | |
6435f0f6 | 2395 | &dat->ks.ks); |
0f113f3e MC |
2396 | dat->block = (block128_f) vpaes_encrypt; |
2397 | dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? | |
2398 | (cbc128_f) vpaes_cbc_encrypt : NULL; | |
2399 | } else | |
5158c763 | 2400 | #endif |
0f113f3e | 2401 | { |
ed576acd | 2402 | ret = AES_set_encrypt_key(key, EVP_CIPHER_CTX_get_key_length(ctx) * 8, |
6435f0f6 | 2403 | &dat->ks.ks); |
0f113f3e MC |
2404 | dat->block = (block128_f) AES_encrypt; |
2405 | dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? | |
2406 | (cbc128_f) AES_cbc_encrypt : NULL; | |
5158c763 | 2407 | #ifdef AES_CTR_ASM |
0f113f3e MC |
2408 | if (mode == EVP_CIPH_CTR_MODE) |
2409 | dat->stream.ctr = (ctr128_f) AES_ctr32_encrypt; | |
5158c763 | 2410 | #endif |
0f113f3e | 2411 | } |
d1fff483 | 2412 | |
0f113f3e | 2413 | if (ret < 0) { |
9311d0c4 | 2414 | ERR_raise(ERR_LIB_EVP, EVP_R_AES_KEY_SETUP_FAILED); |
0f113f3e MC |
2415 | return 0; |
2416 | } | |
d1fff483 | 2417 | |
0f113f3e MC |
2418 | return 1; |
2419 | } | |
d1fff483 | 2420 | |
0f113f3e MC |
2421 | static int aes_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
2422 | const unsigned char *in, size_t len) | |
17f121de | 2423 | { |
6435f0f6 | 2424 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); |
8ca28da0 | 2425 | |
0f113f3e | 2426 | if (dat->stream.cbc) |
9197c226 | 2427 | (*dat->stream.cbc) (in, out, len, &dat->ks, ctx->iv, |
ed576acd TM |
2428 | EVP_CIPHER_CTX_is_encrypting(ctx)); |
2429 | else if (EVP_CIPHER_CTX_is_encrypting(ctx)) | |
9197c226 BK |
2430 | CRYPTO_cbc128_encrypt(in, out, len, &dat->ks, ctx->iv, |
2431 | dat->block); | |
0f113f3e | 2432 | else |
6435f0f6 | 2433 | CRYPTO_cbc128_decrypt(in, out, len, &dat->ks, |
9197c226 | 2434 | ctx->iv, dat->block); |
17f121de | 2435 | |
0f113f3e | 2436 | return 1; |
17f121de AP |
2437 | } |
2438 | ||
0f113f3e MC |
2439 | static int aes_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
2440 | const unsigned char *in, size_t len) | |
17f121de | 2441 | { |
ed576acd | 2442 | size_t bl = EVP_CIPHER_CTX_get_block_size(ctx); |
0f113f3e | 2443 | size_t i; |
6435f0f6 | 2444 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); |
17f121de | 2445 | |
0f113f3e MC |
2446 | if (len < bl) |
2447 | return 1; | |
17f121de | 2448 | |
0f113f3e MC |
2449 | for (i = 0, len -= bl; i <= len; i += bl) |
2450 | (*dat->block) (in + i, out + i, &dat->ks); | |
17f121de | 2451 | |
0f113f3e | 2452 | return 1; |
17f121de | 2453 | } |
deb2c1a1 | 2454 | |
0f113f3e MC |
2455 | static int aes_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
2456 | const unsigned char *in, size_t len) | |
17f121de | 2457 | { |
6435f0f6 | 2458 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); |
8ca28da0 | 2459 | |
ed576acd | 2460 | int num = EVP_CIPHER_CTX_get_num(ctx); |
0f113f3e | 2461 | CRYPTO_ofb128_encrypt(in, out, len, &dat->ks, |
9197c226 | 2462 | ctx->iv, &num, dat->block); |
6435f0f6 | 2463 | EVP_CIPHER_CTX_set_num(ctx, num); |
0f113f3e | 2464 | return 1; |
17f121de | 2465 | } |
deb2c1a1 | 2466 | |
0f113f3e MC |
2467 | static int aes_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
2468 | const unsigned char *in, size_t len) | |
17f121de | 2469 | { |
6435f0f6 | 2470 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); |
8ca28da0 | 2471 | |
ed576acd | 2472 | int num = EVP_CIPHER_CTX_get_num(ctx); |
0f113f3e | 2473 | CRYPTO_cfb128_encrypt(in, out, len, &dat->ks, |
9197c226 | 2474 | ctx->iv, &num, |
ed576acd | 2475 | EVP_CIPHER_CTX_is_encrypting(ctx), dat->block); |
6435f0f6 | 2476 | EVP_CIPHER_CTX_set_num(ctx, num); |
0f113f3e | 2477 | return 1; |
17f121de AP |
2478 | } |
2479 | ||
0f113f3e MC |
2480 | static int aes_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
2481 | const unsigned char *in, size_t len) | |
17f121de | 2482 | { |
6435f0f6 | 2483 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); |
8ca28da0 | 2484 | |
ed576acd | 2485 | int num = EVP_CIPHER_CTX_get_num(ctx); |
0f113f3e | 2486 | CRYPTO_cfb128_8_encrypt(in, out, len, &dat->ks, |
9197c226 | 2487 | ctx->iv, &num, |
ed576acd | 2488 | EVP_CIPHER_CTX_is_encrypting(ctx), dat->block); |
6435f0f6 | 2489 | EVP_CIPHER_CTX_set_num(ctx, num); |
0f113f3e | 2490 | return 1; |
17f121de | 2491 | } |
8d1ebe0b | 2492 | |
0f113f3e MC |
2493 | static int aes_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
2494 | const unsigned char *in, size_t len) | |
17f121de | 2495 | { |
6435f0f6 | 2496 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); |
0f113f3e | 2497 | |
6435f0f6 | 2498 | if (EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS)) { |
ed576acd | 2499 | int num = EVP_CIPHER_CTX_get_num(ctx); |
0f113f3e | 2500 | CRYPTO_cfb128_1_encrypt(in, out, len, &dat->ks, |
9197c226 | 2501 | ctx->iv, &num, |
ed576acd | 2502 | EVP_CIPHER_CTX_is_encrypting(ctx), dat->block); |
6435f0f6 | 2503 | EVP_CIPHER_CTX_set_num(ctx, num); |
0f113f3e MC |
2504 | return 1; |
2505 | } | |
2506 | ||
2507 | while (len >= MAXBITCHUNK) { | |
ed576acd | 2508 | int num = EVP_CIPHER_CTX_get_num(ctx); |
0f113f3e | 2509 | CRYPTO_cfb128_1_encrypt(in, out, MAXBITCHUNK * 8, &dat->ks, |
9197c226 | 2510 | ctx->iv, &num, |
ed576acd | 2511 | EVP_CIPHER_CTX_is_encrypting(ctx), dat->block); |
6435f0f6 | 2512 | EVP_CIPHER_CTX_set_num(ctx, num); |
0f113f3e | 2513 | len -= MAXBITCHUNK; |
604e591e BE |
2514 | out += MAXBITCHUNK; |
2515 | in += MAXBITCHUNK; | |
0f113f3e | 2516 | } |
6435f0f6 | 2517 | if (len) { |
ed576acd | 2518 | int num = EVP_CIPHER_CTX_get_num(ctx); |
0f113f3e | 2519 | CRYPTO_cfb128_1_encrypt(in, out, len * 8, &dat->ks, |
9197c226 | 2520 | ctx->iv, &num, |
ed576acd | 2521 | EVP_CIPHER_CTX_is_encrypting(ctx), dat->block); |
6435f0f6 RL |
2522 | EVP_CIPHER_CTX_set_num(ctx, num); |
2523 | } | |
0f113f3e MC |
2524 | |
2525 | return 1; | |
17f121de | 2526 | } |
8d1ebe0b | 2527 | |
0f113f3e MC |
2528 | static int aes_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
2529 | const unsigned char *in, size_t len) | |
d976f992 | 2530 | { |
042f8f70 P |
2531 | int n = EVP_CIPHER_CTX_get_num(ctx); |
2532 | unsigned int num; | |
6435f0f6 | 2533 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); |
0f113f3e | 2534 | |
042f8f70 P |
2535 | if (n < 0) |
2536 | return 0; | |
2537 | num = (unsigned int)n; | |
2538 | ||
0f113f3e MC |
2539 | if (dat->stream.ctr) |
2540 | CRYPTO_ctr128_encrypt_ctr32(in, out, len, &dat->ks, | |
9197c226 | 2541 | ctx->iv, |
6435f0f6 RL |
2542 | EVP_CIPHER_CTX_buf_noconst(ctx), |
2543 | &num, dat->stream.ctr); | |
0f113f3e MC |
2544 | else |
2545 | CRYPTO_ctr128_encrypt(in, out, len, &dat->ks, | |
9197c226 | 2546 | ctx->iv, |
6435f0f6 RL |
2547 | EVP_CIPHER_CTX_buf_noconst(ctx), &num, |
2548 | dat->block); | |
2549 | EVP_CIPHER_CTX_set_num(ctx, num); | |
0f113f3e | 2550 | return 1; |
d976f992 AP |
2551 | } |
2552 | ||
0f113f3e MC |
2553 | BLOCK_CIPHER_generic_pack(NID_aes, 128, 0) |
2554 | BLOCK_CIPHER_generic_pack(NID_aes, 192, 0) | |
2555 | BLOCK_CIPHER_generic_pack(NID_aes, 256, 0) | |
bdaa5415 DSH |
2556 | |
2557 | static int aes_gcm_cleanup(EVP_CIPHER_CTX *c) | |
0f113f3e | 2558 | { |
6435f0f6 | 2559 | EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,c); |
273a0218 BE |
2560 | if (gctx == NULL) |
2561 | return 0; | |
0f113f3e | 2562 | OPENSSL_cleanse(&gctx->gcm, sizeof(gctx->gcm)); |
9197c226 | 2563 | if (gctx->iv != c->iv) |
0f113f3e MC |
2564 | OPENSSL_free(gctx->iv); |
2565 | return 1; | |
2566 | } | |
bdaa5415 DSH |
2567 | |
2568 | static int aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) | |
0f113f3e | 2569 | { |
6435f0f6 | 2570 | EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,c); |
0f113f3e MC |
2571 | switch (type) { |
2572 | case EVP_CTRL_INIT: | |
2573 | gctx->key_set = 0; | |
2574 | gctx->iv_set = 0; | |
ed576acd | 2575 | gctx->ivlen = EVP_CIPHER_get_iv_length(c->cipher); |
c5307d9c | 2576 | gctx->iv = c->iv; |
0f113f3e MC |
2577 | gctx->taglen = -1; |
2578 | gctx->iv_gen = 0; | |
2579 | gctx->tls_aad_len = -1; | |
2580 | return 1; | |
2581 | ||
7dddf2fc SL |
2582 | case EVP_CTRL_GET_IVLEN: |
2583 | *(int *)ptr = gctx->ivlen; | |
2584 | return 1; | |
2585 | ||
e640fa02 | 2586 | case EVP_CTRL_AEAD_SET_IVLEN: |
0f113f3e MC |
2587 | if (arg <= 0) |
2588 | return 0; | |
2589 | /* Allocate memory for IV if needed */ | |
2590 | if ((arg > EVP_MAX_IV_LENGTH) && (arg > gctx->ivlen)) { | |
c5307d9c | 2591 | if (gctx->iv != c->iv) |
0f113f3e | 2592 | OPENSSL_free(gctx->iv); |
cdb10bae | 2593 | if ((gctx->iv = OPENSSL_malloc(arg)) == NULL) { |
9311d0c4 | 2594 | ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE); |
0f113f3e | 2595 | return 0; |
cdb10bae | 2596 | } |
0f113f3e MC |
2597 | } |
2598 | gctx->ivlen = arg; | |
2599 | return 1; | |
2600 | ||
e640fa02 | 2601 | case EVP_CTRL_AEAD_SET_TAG: |
c5307d9c | 2602 | if (arg <= 0 || arg > 16 || c->encrypt) |
0f113f3e | 2603 | return 0; |
c5307d9c | 2604 | memcpy(c->buf, ptr, arg); |
0f113f3e MC |
2605 | gctx->taglen = arg; |
2606 | return 1; | |
2607 | ||
e640fa02 | 2608 | case EVP_CTRL_AEAD_GET_TAG: |
c5307d9c | 2609 | if (arg <= 0 || arg > 16 || !c->encrypt |
6435f0f6 | 2610 | || gctx->taglen < 0) |
0f113f3e | 2611 | return 0; |
c5307d9c | 2612 | memcpy(ptr, c->buf, arg); |
0f113f3e MC |
2613 | return 1; |
2614 | ||
2615 | case EVP_CTRL_GCM_SET_IV_FIXED: | |
2616 | /* Special case: -1 length restores whole IV */ | |
2617 | if (arg == -1) { | |
2618 | memcpy(gctx->iv, ptr, gctx->ivlen); | |
2619 | gctx->iv_gen = 1; | |
2620 | return 1; | |
2621 | } | |
2622 | /* | |
2623 | * Fixed field must be at least 4 bytes and invocation field at least | |
2624 | * 8. | |
2625 | */ | |
2626 | if ((arg < 4) || (gctx->ivlen - arg) < 8) | |
2627 | return 0; | |
2628 | if (arg) | |
2629 | memcpy(gctx->iv, ptr, arg); | |
c5307d9c | 2630 | if (c->encrypt && RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0) |
16cfc2c9 | 2631 | return 0; |
0f113f3e MC |
2632 | gctx->iv_gen = 1; |
2633 | return 1; | |
2634 | ||
2635 | case EVP_CTRL_GCM_IV_GEN: | |
2636 | if (gctx->iv_gen == 0 || gctx->key_set == 0) | |
2637 | return 0; | |
2638 | CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen); | |
2639 | if (arg <= 0 || arg > gctx->ivlen) | |
2640 | arg = gctx->ivlen; | |
2641 | memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg); | |
2642 | /* | |
2643 | * Invocation field will be at least 8 bytes in size and so no need | |
2644 | * to check wrap around or increment more than last 8 bytes. | |
2645 | */ | |
2646 | ctr64_inc(gctx->iv + gctx->ivlen - 8); | |
2647 | gctx->iv_set = 1; | |
2648 | return 1; | |
2649 | ||
2650 | case EVP_CTRL_GCM_SET_IV_INV: | |
c5307d9c | 2651 | if (gctx->iv_gen == 0 || gctx->key_set == 0 || c->encrypt) |
0f113f3e MC |
2652 | return 0; |
2653 | memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg); | |
2654 | CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen); | |
2655 | gctx->iv_set = 1; | |
2656 | return 1; | |
2657 | ||
2658 | case EVP_CTRL_AEAD_TLS1_AAD: | |
2659 | /* Save the AAD for later use */ | |
c8269881 | 2660 | if (arg != EVP_AEAD_TLS1_AAD_LEN) |
0f113f3e | 2661 | return 0; |
c5307d9c | 2662 | memcpy(c->buf, ptr, arg); |
0f113f3e | 2663 | gctx->tls_aad_len = arg; |
d6b34570 | 2664 | gctx->tls_enc_records = 0; |
0f113f3e | 2665 | { |
c5307d9c | 2666 | unsigned int len = c->buf[arg - 2] << 8 | c->buf[arg - 1]; |
0f113f3e | 2667 | /* Correct length for explicit IV */ |
2198b3a5 AP |
2668 | if (len < EVP_GCM_TLS_EXPLICIT_IV_LEN) |
2669 | return 0; | |
0f113f3e MC |
2670 | len -= EVP_GCM_TLS_EXPLICIT_IV_LEN; |
2671 | /* If decrypting correct for tag too */ | |
c5307d9c | 2672 | if (!c->encrypt) { |
2198b3a5 AP |
2673 | if (len < EVP_GCM_TLS_TAG_LEN) |
2674 | return 0; | |
0f113f3e | 2675 | len -= EVP_GCM_TLS_TAG_LEN; |
2198b3a5 | 2676 | } |
c5307d9c AP |
2677 | c->buf[arg - 2] = len >> 8; |
2678 | c->buf[arg - 1] = len & 0xff; | |
0f113f3e MC |
2679 | } |
2680 | /* Extra padding: tag appended to record */ | |
2681 | return EVP_GCM_TLS_TAG_LEN; | |
2682 | ||
2683 | case EVP_CTRL_COPY: | |
2684 | { | |
2685 | EVP_CIPHER_CTX *out = ptr; | |
6435f0f6 | 2686 | EVP_AES_GCM_CTX *gctx_out = EVP_C_DATA(EVP_AES_GCM_CTX,out); |
0f113f3e MC |
2687 | if (gctx->gcm.key) { |
2688 | if (gctx->gcm.key != &gctx->ks) | |
2689 | return 0; | |
2690 | gctx_out->gcm.key = &gctx_out->ks; | |
2691 | } | |
c5307d9c AP |
2692 | if (gctx->iv == c->iv) |
2693 | gctx_out->iv = out->iv; | |
0f113f3e | 2694 | else { |
cdb10bae | 2695 | if ((gctx_out->iv = OPENSSL_malloc(gctx->ivlen)) == NULL) { |
9311d0c4 | 2696 | ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE); |
0f113f3e | 2697 | return 0; |
cdb10bae | 2698 | } |
0f113f3e MC |
2699 | memcpy(gctx_out->iv, gctx->iv, gctx->ivlen); |
2700 | } | |
2701 | return 1; | |
2702 | } | |
2703 | ||
2704 | default: | |
2705 | return -1; | |
2706 | ||
2707 | } | |
2708 | } | |
bdaa5415 DSH |
2709 | |
2710 | static int aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
2711 | const unsigned char *iv, int enc) |
2712 | { | |
6435f0f6 | 2713 | EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,ctx); |
0f113f3e MC |
2714 | if (!iv && !key) |
2715 | return 1; | |
2716 | if (key) { | |
2717 | do { | |
5158c763 | 2718 | #ifdef HWAES_CAPABLE |
0f113f3e | 2719 | if (HWAES_CAPABLE) { |
c5307d9c | 2720 | HWAES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks); |
0f113f3e MC |
2721 | CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, |
2722 | (block128_f) HWAES_encrypt); | |
5158c763 | 2723 | # ifdef HWAES_ctr32_encrypt_blocks |
0f113f3e | 2724 | gctx->ctr = (ctr128_f) HWAES_ctr32_encrypt_blocks; |
5158c763 | 2725 | # else |
0f113f3e | 2726 | gctx->ctr = NULL; |
5158c763 | 2727 | # endif |
0f113f3e MC |
2728 | break; |
2729 | } else | |
5158c763 MC |
2730 | #endif |
2731 | #ifdef BSAES_CAPABLE | |
0f113f3e | 2732 | if (BSAES_CAPABLE) { |
c5307d9c | 2733 | AES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks); |
0f113f3e MC |
2734 | CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, |
2735 | (block128_f) AES_encrypt); | |
3675334e | 2736 | gctx->ctr = (ctr128_f) ossl_bsaes_ctr32_encrypt_blocks; |
0f113f3e MC |
2737 | break; |
2738 | } else | |
5158c763 MC |
2739 | #endif |
2740 | #ifdef VPAES_CAPABLE | |
0f113f3e | 2741 | if (VPAES_CAPABLE) { |
c5307d9c | 2742 | vpaes_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks); |
0f113f3e MC |
2743 | CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, |
2744 | (block128_f) vpaes_encrypt); | |
2745 | gctx->ctr = NULL; | |
2746 | break; | |
2747 | } else | |
5158c763 | 2748 | #endif |
0f113f3e MC |
2749 | (void)0; /* terminate potentially open 'else' */ |
2750 | ||
c5307d9c | 2751 | AES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks); |
0f113f3e MC |
2752 | CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, |
2753 | (block128_f) AES_encrypt); | |
5158c763 | 2754 | #ifdef AES_CTR_ASM |
0f113f3e | 2755 | gctx->ctr = (ctr128_f) AES_ctr32_encrypt; |
5158c763 | 2756 | #else |
0f113f3e | 2757 | gctx->ctr = NULL; |
5158c763 | 2758 | #endif |
0f113f3e MC |
2759 | } while (0); |
2760 | ||
2761 | /* | |
2762 | * If we have an iv can set it directly, otherwise use saved IV. | |
2763 | */ | |
2764 | if (iv == NULL && gctx->iv_set) | |
2765 | iv = gctx->iv; | |
2766 | if (iv) { | |
2767 | CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); | |
2768 | gctx->iv_set = 1; | |
2769 | } | |
2770 | gctx->key_set = 1; | |
2771 | } else { | |
2772 | /* If key set use IV, otherwise copy */ | |
2773 | if (gctx->key_set) | |
2774 | CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); | |
2775 | else | |
2776 | memcpy(gctx->iv, iv, gctx->ivlen); | |
2777 | gctx->iv_set = 1; | |
2778 | gctx->iv_gen = 0; | |
2779 | } | |
2780 | return 1; | |
2781 | } | |
2782 | ||
2783 | /* | |
2784 | * Handle TLS GCM packet format. This consists of the last portion of the IV | |
28dd49fa DSH |
2785 | * followed by the payload and finally the tag. On encrypt generate IV, |
2786 | * encrypt payload and write the tag. On verify retrieve IV, decrypt payload | |
2787 | * and verify tag. | |
2788 | */ | |
2789 | ||
2790 | static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
0f113f3e MC |
2791 | const unsigned char *in, size_t len) |
2792 | { | |
6435f0f6 | 2793 | EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,ctx); |
0f113f3e MC |
2794 | int rv = -1; |
2795 | /* Encrypt/decrypt must be performed in place */ | |
2796 | if (out != in | |
2797 | || len < (EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN)) | |
2798 | return -1; | |
df443918 | 2799 | |
d6b34570 P |
2800 | /* |
2801 | * Check for too many keys as per FIPS 140-2 IG A.5 "Key/IV Pair Uniqueness | |
2802 | * Requirements from SP 800-38D". The requirements is for one party to the | |
2803 | * communication to fail after 2^64 - 1 keys. We do this on the encrypting | |
2804 | * side only. | |
2805 | */ | |
2806 | if (ctx->encrypt && ++gctx->tls_enc_records == 0) { | |
9311d0c4 | 2807 | ERR_raise(ERR_LIB_EVP, EVP_R_TOO_MANY_RECORDS); |
d6b34570 P |
2808 | goto err; |
2809 | } | |
2810 | ||
0f113f3e MC |
2811 | /* |
2812 | * Set IV from start of buffer or generate IV and write to start of | |
2813 | * buffer. | |
2814 | */ | |
c5307d9c AP |
2815 | if (EVP_CIPHER_CTX_ctrl(ctx, ctx->encrypt ? EVP_CTRL_GCM_IV_GEN |
2816 | : EVP_CTRL_GCM_SET_IV_INV, | |
0f113f3e MC |
2817 | EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0) |
2818 | goto err; | |
2819 | /* Use saved AAD */ | |
c5307d9c | 2820 | if (CRYPTO_gcm128_aad(&gctx->gcm, ctx->buf, gctx->tls_aad_len)) |
0f113f3e MC |
2821 | goto err; |
2822 | /* Fix buffer and length to point to payload */ | |
2823 | in += EVP_GCM_TLS_EXPLICIT_IV_LEN; | |
2824 | out += EVP_GCM_TLS_EXPLICIT_IV_LEN; | |
2825 | len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN; | |
c5307d9c | 2826 | if (ctx->encrypt) { |
0f113f3e MC |
2827 | /* Encrypt payload */ |
2828 | if (gctx->ctr) { | |
2829 | size_t bulk = 0; | |
5158c763 | 2830 | #if defined(AES_GCM_ASM) |
0f113f3e MC |
2831 | if (len >= 32 && AES_GCM_ASM(gctx)) { |
2832 | if (CRYPTO_gcm128_encrypt(&gctx->gcm, NULL, NULL, 0)) | |
2833 | return -1; | |
2834 | ||
2835 | bulk = AES_gcm_encrypt(in, out, len, | |
2836 | gctx->gcm.key, | |
2837 | gctx->gcm.Yi.c, gctx->gcm.Xi.u); | |
2838 | gctx->gcm.len.u[1] += bulk; | |
2839 | } | |
5158c763 | 2840 | #endif |
0f113f3e MC |
2841 | if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm, |
2842 | in + bulk, | |
2843 | out + bulk, | |
2844 | len - bulk, gctx->ctr)) | |
2845 | goto err; | |
2846 | } else { | |
2847 | size_t bulk = 0; | |
5158c763 | 2848 | #if defined(AES_GCM_ASM2) |
0f113f3e MC |
2849 | if (len >= 32 && AES_GCM_ASM2(gctx)) { |
2850 | if (CRYPTO_gcm128_encrypt(&gctx->gcm, NULL, NULL, 0)) | |
2851 | return -1; | |
2852 | ||
2853 | bulk = AES_gcm_encrypt(in, out, len, | |
2854 | gctx->gcm.key, | |
2855 | gctx->gcm.Yi.c, gctx->gcm.Xi.u); | |
2856 | gctx->gcm.len.u[1] += bulk; | |
2857 | } | |
5158c763 | 2858 | #endif |
0f113f3e MC |
2859 | if (CRYPTO_gcm128_encrypt(&gctx->gcm, |
2860 | in + bulk, out + bulk, len - bulk)) | |
2861 | goto err; | |
2862 | } | |
2863 | out += len; | |
2864 | /* Finally write tag */ | |
2865 | CRYPTO_gcm128_tag(&gctx->gcm, out, EVP_GCM_TLS_TAG_LEN); | |
2866 | rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN; | |
2867 | } else { | |
2868 | /* Decrypt */ | |
2869 | if (gctx->ctr) { | |
2870 | size_t bulk = 0; | |
5158c763 | 2871 | #if defined(AES_GCM_ASM) |
0f113f3e MC |
2872 | if (len >= 16 && AES_GCM_ASM(gctx)) { |
2873 | if (CRYPTO_gcm128_decrypt(&gctx->gcm, NULL, NULL, 0)) | |
2874 | return -1; | |
2875 | ||
2876 | bulk = AES_gcm_decrypt(in, out, len, | |
2877 | gctx->gcm.key, | |
2878 | gctx->gcm.Yi.c, gctx->gcm.Xi.u); | |
2879 | gctx->gcm.len.u[1] += bulk; | |
2880 | } | |
5158c763 | 2881 | #endif |
0f113f3e MC |
2882 | if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm, |
2883 | in + bulk, | |
2884 | out + bulk, | |
2885 | len - bulk, gctx->ctr)) | |
2886 | goto err; | |
2887 | } else { | |
2888 | size_t bulk = 0; | |
5158c763 | 2889 | #if defined(AES_GCM_ASM2) |
0f113f3e MC |
2890 | if (len >= 16 && AES_GCM_ASM2(gctx)) { |
2891 | if (CRYPTO_gcm128_decrypt(&gctx->gcm, NULL, NULL, 0)) | |
2892 | return -1; | |
2893 | ||
2894 | bulk = AES_gcm_decrypt(in, out, len, | |
2895 | gctx->gcm.key, | |
2896 | gctx->gcm.Yi.c, gctx->gcm.Xi.u); | |
2897 | gctx->gcm.len.u[1] += bulk; | |
2898 | } | |
5158c763 | 2899 | #endif |
0f113f3e MC |
2900 | if (CRYPTO_gcm128_decrypt(&gctx->gcm, |
2901 | in + bulk, out + bulk, len - bulk)) | |
2902 | goto err; | |
2903 | } | |
2904 | /* Retrieve tag */ | |
c5307d9c | 2905 | CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, EVP_GCM_TLS_TAG_LEN); |
0f113f3e | 2906 | /* If tag mismatch wipe buffer */ |
c5307d9c | 2907 | if (CRYPTO_memcmp(ctx->buf, in + len, EVP_GCM_TLS_TAG_LEN)) { |
0f113f3e MC |
2908 | OPENSSL_cleanse(out, len); |
2909 | goto err; | |
2910 | } | |
2911 | rv = len; | |
2912 | } | |
2913 | ||
2914 | err: | |
2915 | gctx->iv_set = 0; | |
2916 | gctx->tls_aad_len = -1; | |
2917 | return rv; | |
2918 | } | |
28dd49fa | 2919 | |
f844f9eb | 2920 | #ifdef FIPS_MODULE |
bcf082d1 SL |
2921 | /* |
2922 | * See SP800-38D (GCM) Section 8 "Uniqueness requirement on IVS and keys" | |
2923 | * | |
2924 | * See also 8.2.2 RBG-based construction. | |
2925 | * Random construction consists of a free field (which can be NULL) and a | |
2926 | * random field which will use a DRBG that can return at least 96 bits of | |
2927 | * entropy strength. (The DRBG must be seeded by the FIPS module). | |
2928 | */ | |
2929 | static int aes_gcm_iv_generate(EVP_AES_GCM_CTX *gctx, int offset) | |
2930 | { | |
2931 | int sz = gctx->ivlen - offset; | |
2932 | ||
2933 | /* Must be at least 96 bits */ | |
2934 | if (sz <= 0 || gctx->ivlen < 12) | |
2935 | return 0; | |
2936 | ||
2937 | /* Use DRBG to generate random iv */ | |
2938 | if (RAND_bytes(gctx->iv + offset, sz) <= 0) | |
2939 | return 0; | |
2940 | return 1; | |
2941 | } | |
f844f9eb | 2942 | #endif /* FIPS_MODULE */ |
bcf082d1 | 2943 | |
17f121de | 2944 | static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e MC |
2945 | const unsigned char *in, size_t len) |
2946 | { | |
6435f0f6 | 2947 | EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,ctx); |
bcf082d1 | 2948 | |
0f113f3e MC |
2949 | /* If not set up, return error */ |
2950 | if (!gctx->key_set) | |
2951 | return -1; | |
2952 | ||
2953 | if (gctx->tls_aad_len >= 0) | |
2954 | return aes_gcm_tls_cipher(ctx, out, in, len); | |
2955 | ||
f844f9eb | 2956 | #ifdef FIPS_MODULE |
bcf082d1 SL |
2957 | /* |
2958 | * FIPS requires generation of AES-GCM IV's inside the FIPS module. | |
2959 | * The IV can still be set externally (the security policy will state that | |
2960 | * this is not FIPS compliant). There are some applications | |
2961 | * where setting the IV externally is the only option available. | |
2962 | */ | |
2963 | if (!gctx->iv_set) { | |
2964 | if (!ctx->encrypt || !aes_gcm_iv_generate(gctx, 0)) | |
2965 | return -1; | |
2966 | CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen); | |
2967 | gctx->iv_set = 1; | |
2968 | gctx->iv_gen_rand = 1; | |
2969 | } | |
2970 | #else | |
0f113f3e MC |
2971 | if (!gctx->iv_set) |
2972 | return -1; | |
f844f9eb | 2973 | #endif /* FIPS_MODULE */ |
bcf082d1 | 2974 | |
0f113f3e MC |
2975 | if (in) { |
2976 | if (out == NULL) { | |
2977 | if (CRYPTO_gcm128_aad(&gctx->gcm, in, len)) | |
2978 | return -1; | |
c5307d9c | 2979 | } else if (ctx->encrypt) { |
0f113f3e MC |
2980 | if (gctx->ctr) { |
2981 | size_t bulk = 0; | |
5158c763 | 2982 | #if defined(AES_GCM_ASM) |
0f113f3e MC |
2983 | if (len >= 32 && AES_GCM_ASM(gctx)) { |
2984 | size_t res = (16 - gctx->gcm.mres) % 16; | |
2985 | ||
2986 | if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, res)) | |
2987 | return -1; | |
2988 | ||
2989 | bulk = AES_gcm_encrypt(in + res, | |
2990 | out + res, len - res, | |
2991 | gctx->gcm.key, gctx->gcm.Yi.c, | |
2992 | gctx->gcm.Xi.u); | |
2993 | gctx->gcm.len.u[1] += bulk; | |
2994 | bulk += res; | |
2995 | } | |
5158c763 | 2996 | #endif |
0f113f3e MC |
2997 | if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm, |
2998 | in + bulk, | |
2999 | out + bulk, | |
3000 | len - bulk, gctx->ctr)) | |
3001 | return -1; | |
3002 | } else { | |
3003 | size_t bulk = 0; | |
5158c763 | 3004 | #if defined(AES_GCM_ASM2) |
0f113f3e MC |
3005 | if (len >= 32 && AES_GCM_ASM2(gctx)) { |
3006 | size_t res = (16 - gctx->gcm.mres) % 16; | |
3007 | ||
3008 | if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, res)) | |
3009 | return -1; | |
3010 | ||
3011 | bulk = AES_gcm_encrypt(in + res, | |
3012 | out + res, len - res, | |
3013 | gctx->gcm.key, gctx->gcm.Yi.c, | |
3014 | gctx->gcm.Xi.u); | |
3015 | gctx->gcm.len.u[1] += bulk; | |
3016 | bulk += res; | |
3017 | } | |
5158c763 | 3018 | #endif |
0f113f3e MC |
3019 | if (CRYPTO_gcm128_encrypt(&gctx->gcm, |
3020 | in + bulk, out + bulk, len - bulk)) | |
3021 | return -1; | |
3022 | } | |
3023 | } else { | |
3024 | if (gctx->ctr) { | |
3025 | size_t bulk = 0; | |
5158c763 | 3026 | #if defined(AES_GCM_ASM) |
0f113f3e MC |
3027 | if (len >= 16 && AES_GCM_ASM(gctx)) { |
3028 | size_t res = (16 - gctx->gcm.mres) % 16; | |
3029 | ||
3030 | if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, res)) | |
3031 | return -1; | |
3032 | ||
3033 | bulk = AES_gcm_decrypt(in + res, | |
3034 | out + res, len - res, | |
3035 | gctx->gcm.key, | |
3036 | gctx->gcm.Yi.c, gctx->gcm.Xi.u); | |
3037 | gctx->gcm.len.u[1] += bulk; | |
3038 | bulk += res; | |
3039 | } | |
5158c763 | 3040 | #endif |
0f113f3e MC |
3041 | if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm, |
3042 | in + bulk, | |
3043 | out + bulk, | |
3044 | len - bulk, gctx->ctr)) | |
3045 | return -1; | |
3046 | } else { | |
3047 | size_t bulk = 0; | |
5158c763 | 3048 | #if defined(AES_GCM_ASM2) |
0f113f3e MC |
3049 | if (len >= 16 && AES_GCM_ASM2(gctx)) { |
3050 | size_t res = (16 - gctx->gcm.mres) % 16; | |
3051 | ||
3052 | if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, res)) | |
3053 | return -1; | |
3054 | ||
3055 | bulk = AES_gcm_decrypt(in + res, | |
3056 | out + res, len - res, | |
3057 | gctx->gcm.key, | |
3058 | gctx->gcm.Yi.c, gctx->gcm.Xi.u); | |
3059 | gctx->gcm.len.u[1] += bulk; | |
3060 | bulk += res; | |
3061 | } | |
5158c763 | 3062 | #endif |
0f113f3e MC |
3063 | if (CRYPTO_gcm128_decrypt(&gctx->gcm, |
3064 | in + bulk, out + bulk, len - bulk)) | |
3065 | return -1; | |
3066 | } | |
3067 | } | |
3068 | return len; | |
3069 | } else { | |
c5307d9c | 3070 | if (!ctx->encrypt) { |
0f113f3e MC |
3071 | if (gctx->taglen < 0) |
3072 | return -1; | |
c5307d9c | 3073 | if (CRYPTO_gcm128_finish(&gctx->gcm, ctx->buf, gctx->taglen) != 0) |
0f113f3e MC |
3074 | return -1; |
3075 | gctx->iv_set = 0; | |
3076 | return 0; | |
3077 | } | |
c5307d9c | 3078 | CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, 16); |
0f113f3e MC |
3079 | gctx->taglen = 16; |
3080 | /* Don't reuse the IV */ | |
3081 | gctx->iv_set = 0; | |
3082 | return 0; | |
3083 | } | |
3084 | ||
3085 | } | |
3086 | ||
5158c763 | 3087 | #define CUSTOM_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 \ |
0f113f3e MC |
3088 | | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \ |
3089 | | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT \ | |
7dddf2fc | 3090 | | EVP_CIPH_CUSTOM_COPY | EVP_CIPH_CUSTOM_IV_LENGTH) |
0f113f3e MC |
3091 | |
3092 | BLOCK_CIPHER_custom(NID_aes, 128, 1, 12, gcm, GCM, | |
3093 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) | |
3094 | BLOCK_CIPHER_custom(NID_aes, 192, 1, 12, gcm, GCM, | |
3095 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) | |
3096 | BLOCK_CIPHER_custom(NID_aes, 256, 1, 12, gcm, GCM, | |
3097 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) | |
32a2d8dd DSH |
3098 | |
3099 | static int aes_xts_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) | |
0f113f3e | 3100 | { |
2c840201 P |
3101 | EVP_AES_XTS_CTX *xctx = EVP_C_DATA(EVP_AES_XTS_CTX, c); |
3102 | ||
0f113f3e MC |
3103 | if (type == EVP_CTRL_COPY) { |
3104 | EVP_CIPHER_CTX *out = ptr; | |
6435f0f6 | 3105 | EVP_AES_XTS_CTX *xctx_out = EVP_C_DATA(EVP_AES_XTS_CTX,out); |
2c840201 | 3106 | |
0f113f3e MC |
3107 | if (xctx->xts.key1) { |
3108 | if (xctx->xts.key1 != &xctx->ks1) | |
3109 | return 0; | |
3110 | xctx_out->xts.key1 = &xctx_out->ks1; | |
3111 | } | |
3112 | if (xctx->xts.key2) { | |
3113 | if (xctx->xts.key2 != &xctx->ks2) | |
3114 | return 0; | |
3115 | xctx_out->xts.key2 = &xctx_out->ks2; | |
3116 | } | |
3117 | return 1; | |
3118 | } else if (type != EVP_CTRL_INIT) | |
3119 | return -1; | |
3120 | /* key1 and key2 are used as an indicator both key and IV are set */ | |
3121 | xctx->xts.key1 = NULL; | |
3122 | xctx->xts.key2 = NULL; | |
3123 | return 1; | |
3124 | } | |
32a2d8dd DSH |
3125 | |
3126 | static int aes_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
3127 | const unsigned char *iv, int enc) |
3128 | { | |
6435f0f6 | 3129 | EVP_AES_XTS_CTX *xctx = EVP_C_DATA(EVP_AES_XTS_CTX,ctx); |
2c840201 | 3130 | |
0f113f3e MC |
3131 | if (!iv && !key) |
3132 | return 1; | |
3133 | ||
3538b0f7 | 3134 | if (key) { |
0f113f3e | 3135 | do { |
3538b0f7 | 3136 | /* The key is two half length keys in reality */ |
ed576acd | 3137 | const int bytes = EVP_CIPHER_CTX_get_key_length(ctx) / 2; |
3538b0f7 P |
3138 | const int bits = bytes * 8; |
3139 | ||
3140 | /* | |
3141 | * Verify that the two keys are different. | |
3142 | * | |
3143 | * This addresses the vulnerability described in Rogaway's | |
3144 | * September 2004 paper: | |
3145 | * | |
3146 | * "Efficient Instantiations of Tweakable Blockciphers and | |
3147 | * Refinements to Modes OCB and PMAC". | |
3148 | * (http://web.cs.ucdavis.edu/~rogaway/papers/offsets.pdf) | |
3149 | * | |
3150 | * FIPS 140-2 IG A.9 XTS-AES Key Generation Requirements states | |
3151 | * that: | |
3152 | * "The check for Key_1 != Key_2 shall be done at any place | |
3153 | * BEFORE using the keys in the XTS-AES algorithm to process | |
3154 | * data with them." | |
3155 | */ | |
2c840201 P |
3156 | if ((!allow_insecure_decrypt || enc) |
3157 | && CRYPTO_memcmp(key, key + bytes, bytes) == 0) { | |
9311d0c4 | 3158 | ERR_raise(ERR_LIB_EVP, EVP_R_XTS_DUPLICATED_KEYS); |
3538b0f7 P |
3159 | return 0; |
3160 | } | |
3161 | ||
5158c763 | 3162 | #ifdef AES_XTS_ASM |
0f113f3e | 3163 | xctx->stream = enc ? AES_xts_encrypt : AES_xts_decrypt; |
5158c763 | 3164 | #else |
0f113f3e | 3165 | xctx->stream = NULL; |
5158c763 | 3166 | #endif |
0f113f3e | 3167 | /* key_len is two AES keys */ |
5158c763 | 3168 | #ifdef HWAES_CAPABLE |
0f113f3e MC |
3169 | if (HWAES_CAPABLE) { |
3170 | if (enc) { | |
3538b0f7 | 3171 | HWAES_set_encrypt_key(key, bits, &xctx->ks1.ks); |
0f113f3e | 3172 | xctx->xts.block1 = (block128_f) HWAES_encrypt; |
46f047d7 AP |
3173 | # ifdef HWAES_xts_encrypt |
3174 | xctx->stream = HWAES_xts_encrypt; | |
3175 | # endif | |
0f113f3e | 3176 | } else { |
3538b0f7 | 3177 | HWAES_set_decrypt_key(key, bits, &xctx->ks1.ks); |
0f113f3e | 3178 | xctx->xts.block1 = (block128_f) HWAES_decrypt; |
46f047d7 AP |
3179 | # ifdef HWAES_xts_decrypt |
3180 | xctx->stream = HWAES_xts_decrypt; | |
3181 | #endif | |
0f113f3e MC |
3182 | } |
3183 | ||
3538b0f7 | 3184 | HWAES_set_encrypt_key(key + bytes, bits, &xctx->ks2.ks); |
0f113f3e MC |
3185 | xctx->xts.block2 = (block128_f) HWAES_encrypt; |
3186 | ||
3187 | xctx->xts.key1 = &xctx->ks1; | |
3188 | break; | |
3189 | } else | |
5158c763 MC |
3190 | #endif |
3191 | #ifdef BSAES_CAPABLE | |
0f113f3e | 3192 | if (BSAES_CAPABLE) |
3675334e | 3193 | xctx->stream = enc ? ossl_bsaes_xts_encrypt : ossl_bsaes_xts_decrypt; |
0f113f3e | 3194 | else |
5158c763 MC |
3195 | #endif |
3196 | #ifdef VPAES_CAPABLE | |
0f113f3e MC |
3197 | if (VPAES_CAPABLE) { |
3198 | if (enc) { | |
3538b0f7 | 3199 | vpaes_set_encrypt_key(key, bits, &xctx->ks1.ks); |
0f113f3e MC |
3200 | xctx->xts.block1 = (block128_f) vpaes_encrypt; |
3201 | } else { | |
3538b0f7 | 3202 | vpaes_set_decrypt_key(key, bits, &xctx->ks1.ks); |
0f113f3e MC |
3203 | xctx->xts.block1 = (block128_f) vpaes_decrypt; |
3204 | } | |
3205 | ||
3538b0f7 | 3206 | vpaes_set_encrypt_key(key + bytes, bits, &xctx->ks2.ks); |
0f113f3e MC |
3207 | xctx->xts.block2 = (block128_f) vpaes_encrypt; |
3208 | ||
3209 | xctx->xts.key1 = &xctx->ks1; | |
3210 | break; | |
3211 | } else | |
5158c763 | 3212 | #endif |
0f113f3e MC |
3213 | (void)0; /* terminate potentially open 'else' */ |
3214 | ||
3215 | if (enc) { | |
3538b0f7 | 3216 | AES_set_encrypt_key(key, bits, &xctx->ks1.ks); |
0f113f3e MC |
3217 | xctx->xts.block1 = (block128_f) AES_encrypt; |
3218 | } else { | |
3538b0f7 | 3219 | AES_set_decrypt_key(key, bits, &xctx->ks1.ks); |
0f113f3e MC |
3220 | xctx->xts.block1 = (block128_f) AES_decrypt; |
3221 | } | |
3222 | ||
3538b0f7 | 3223 | AES_set_encrypt_key(key + bytes, bits, &xctx->ks2.ks); |
0f113f3e MC |
3224 | xctx->xts.block2 = (block128_f) AES_encrypt; |
3225 | ||
3226 | xctx->xts.key1 = &xctx->ks1; | |
3227 | } while (0); | |
3538b0f7 | 3228 | } |
0f113f3e MC |
3229 | |
3230 | if (iv) { | |
3231 | xctx->xts.key2 = &xctx->ks2; | |
9197c226 | 3232 | memcpy(ctx->iv, iv, 16); |
0f113f3e MC |
3233 | } |
3234 | ||
3235 | return 1; | |
3236 | } | |
32a2d8dd | 3237 | |
17f121de | 3238 | static int aes_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e MC |
3239 | const unsigned char *in, size_t len) |
3240 | { | |
6435f0f6 | 3241 | EVP_AES_XTS_CTX *xctx = EVP_C_DATA(EVP_AES_XTS_CTX,ctx); |
95eda4f0 P |
3242 | |
3243 | if (xctx->xts.key1 == NULL | |
3244 | || xctx->xts.key2 == NULL | |
3245 | || out == NULL | |
3246 | || in == NULL | |
3247 | || len < AES_BLOCK_SIZE) | |
0f113f3e | 3248 | return 0; |
95eda4f0 | 3249 | |
5516c19b | 3250 | /* |
79c44b4e | 3251 | * Impose a limit of 2^20 blocks per data unit as specified by |
5516c19b P |
3252 | * IEEE Std 1619-2018. The earlier and obsolete IEEE Std 1619-2007 |
3253 | * indicated that this was a SHOULD NOT rather than a MUST NOT. | |
3254 | * NIST SP 800-38E mandates the same limit. | |
3255 | */ | |
3256 | if (len > XTS_MAX_BLOCKS_PER_DATA_UNIT * AES_BLOCK_SIZE) { | |
9311d0c4 | 3257 | ERR_raise(ERR_LIB_EVP, EVP_R_XTS_DATA_UNIT_IS_TOO_LARGE); |
5516c19b P |
3258 | return 0; |
3259 | } | |
3260 | ||
0f113f3e MC |
3261 | if (xctx->stream) |
3262 | (*xctx->stream) (in, out, len, | |
6435f0f6 | 3263 | xctx->xts.key1, xctx->xts.key2, |
9197c226 BK |
3264 | ctx->iv); |
3265 | else if (CRYPTO_xts128_encrypt(&xctx->xts, ctx->iv, in, out, len, | |
ed576acd | 3266 | EVP_CIPHER_CTX_is_encrypting(ctx))) |
0f113f3e MC |
3267 | return 0; |
3268 | return 1; | |
3269 | } | |
3270 | ||
5158c763 | 3271 | #define aes_xts_cleanup NULL |
0f113f3e | 3272 | |
5158c763 | 3273 | #define XTS_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 | EVP_CIPH_CUSTOM_IV \ |
0f113f3e MC |
3274 | | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT \ |
3275 | | EVP_CIPH_CUSTOM_COPY) | |
3276 | ||
3277 | BLOCK_CIPHER_custom(NID_aes, 128, 1, 16, xts, XTS, XTS_FLAGS) | |
3278 | BLOCK_CIPHER_custom(NID_aes, 256, 1, 16, xts, XTS, XTS_FLAGS) | |
23916810 DSH |
3279 | |
3280 | static int aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) | |
0f113f3e | 3281 | { |
6435f0f6 | 3282 | EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,c); |
0f113f3e MC |
3283 | switch (type) { |
3284 | case EVP_CTRL_INIT: | |
3285 | cctx->key_set = 0; | |
3286 | cctx->iv_set = 0; | |
3287 | cctx->L = 8; | |
3288 | cctx->M = 12; | |
3289 | cctx->tag_set = 0; | |
3290 | cctx->len_set = 0; | |
e75c5a79 DSH |
3291 | cctx->tls_aad_len = -1; |
3292 | return 1; | |
3293 | ||
7dddf2fc SL |
3294 | case EVP_CTRL_GET_IVLEN: |
3295 | *(int *)ptr = 15 - cctx->L; | |
3296 | return 1; | |
3297 | ||
e75c5a79 DSH |
3298 | case EVP_CTRL_AEAD_TLS1_AAD: |
3299 | /* Save the AAD for later use */ | |
3300 | if (arg != EVP_AEAD_TLS1_AAD_LEN) | |
3301 | return 0; | |
6435f0f6 | 3302 | memcpy(EVP_CIPHER_CTX_buf_noconst(c), ptr, arg); |
e75c5a79 DSH |
3303 | cctx->tls_aad_len = arg; |
3304 | { | |
6435f0f6 RL |
3305 | uint16_t len = |
3306 | EVP_CIPHER_CTX_buf_noconst(c)[arg - 2] << 8 | |
3307 | | EVP_CIPHER_CTX_buf_noconst(c)[arg - 1]; | |
e75c5a79 | 3308 | /* Correct length for explicit IV */ |
2198b3a5 AP |
3309 | if (len < EVP_CCM_TLS_EXPLICIT_IV_LEN) |
3310 | return 0; | |
e75c5a79 DSH |
3311 | len -= EVP_CCM_TLS_EXPLICIT_IV_LEN; |
3312 | /* If decrypting correct for tag too */ | |
ed576acd | 3313 | if (!EVP_CIPHER_CTX_is_encrypting(c)) { |
2198b3a5 AP |
3314 | if (len < cctx->M) |
3315 | return 0; | |
e75c5a79 | 3316 | len -= cctx->M; |
2198b3a5 | 3317 | } |
6435f0f6 RL |
3318 | EVP_CIPHER_CTX_buf_noconst(c)[arg - 2] = len >> 8; |
3319 | EVP_CIPHER_CTX_buf_noconst(c)[arg - 1] = len & 0xff; | |
e75c5a79 DSH |
3320 | } |
3321 | /* Extra padding: tag appended to record */ | |
3322 | return cctx->M; | |
3323 | ||
3324 | case EVP_CTRL_CCM_SET_IV_FIXED: | |
3325 | /* Sanity check length */ | |
3326 | if (arg != EVP_CCM_TLS_FIXED_IV_LEN) | |
3327 | return 0; | |
3328 | /* Just copy to first part of IV */ | |
9197c226 | 3329 | memcpy(c->iv, ptr, arg); |
0f113f3e MC |
3330 | return 1; |
3331 | ||
e640fa02 | 3332 | case EVP_CTRL_AEAD_SET_IVLEN: |
0f113f3e | 3333 | arg = 15 - arg; |
018fcbec | 3334 | /* fall thru */ |
0f113f3e MC |
3335 | case EVP_CTRL_CCM_SET_L: |
3336 | if (arg < 2 || arg > 8) | |
3337 | return 0; | |
3338 | cctx->L = arg; | |
3339 | return 1; | |
3340 | ||
e640fa02 | 3341 | case EVP_CTRL_AEAD_SET_TAG: |
0f113f3e MC |
3342 | if ((arg & 1) || arg < 4 || arg > 16) |
3343 | return 0; | |
ed576acd | 3344 | if (EVP_CIPHER_CTX_is_encrypting(c) && ptr) |
0f113f3e MC |
3345 | return 0; |
3346 | if (ptr) { | |
3347 | cctx->tag_set = 1; | |
6435f0f6 | 3348 | memcpy(EVP_CIPHER_CTX_buf_noconst(c), ptr, arg); |
0f113f3e MC |
3349 | } |
3350 | cctx->M = arg; | |
3351 | return 1; | |
3352 | ||
e640fa02 | 3353 | case EVP_CTRL_AEAD_GET_TAG: |
ed576acd | 3354 | if (!EVP_CIPHER_CTX_is_encrypting(c) || !cctx->tag_set) |
0f113f3e MC |
3355 | return 0; |
3356 | if (!CRYPTO_ccm128_tag(&cctx->ccm, ptr, (size_t)arg)) | |
3357 | return 0; | |
3358 | cctx->tag_set = 0; | |
3359 | cctx->iv_set = 0; | |
3360 | cctx->len_set = 0; | |
3361 | return 1; | |
3362 | ||
3363 | case EVP_CTRL_COPY: | |
3364 | { | |
3365 | EVP_CIPHER_CTX *out = ptr; | |
6435f0f6 | 3366 | EVP_AES_CCM_CTX *cctx_out = EVP_C_DATA(EVP_AES_CCM_CTX,out); |
0f113f3e MC |
3367 | if (cctx->ccm.key) { |
3368 | if (cctx->ccm.key != &cctx->ks) | |
3369 | return 0; | |
3370 | cctx_out->ccm.key = &cctx_out->ks; | |
3371 | } | |
3372 | return 1; | |
3373 | } | |
3374 | ||
3375 | default: | |
3376 | return -1; | |
3377 | ||
3378 | } | |
3379 | } | |
23916810 DSH |
3380 | |
3381 | static int aes_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
3382 | const unsigned char *iv, int enc) |
3383 | { | |
6435f0f6 | 3384 | EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,ctx); |
0f113f3e MC |
3385 | if (!iv && !key) |
3386 | return 1; | |
3387 | if (key) | |
3388 | do { | |
5158c763 | 3389 | #ifdef HWAES_CAPABLE |
0f113f3e | 3390 | if (HWAES_CAPABLE) { |
ed576acd TM |
3391 | HWAES_set_encrypt_key(key, |
3392 | EVP_CIPHER_CTX_get_key_length(ctx) * 8, | |
6435f0f6 | 3393 | &cctx->ks.ks); |
0f113f3e MC |
3394 | |
3395 | CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, | |
3396 | &cctx->ks, (block128_f) HWAES_encrypt); | |
3397 | cctx->str = NULL; | |
3398 | cctx->key_set = 1; | |
3399 | break; | |
3400 | } else | |
5158c763 MC |
3401 | #endif |
3402 | #ifdef VPAES_CAPABLE | |
0f113f3e | 3403 | if (VPAES_CAPABLE) { |
ed576acd TM |
3404 | vpaes_set_encrypt_key(key, |
3405 | EVP_CIPHER_CTX_get_key_length(ctx) * 8, | |
6435f0f6 | 3406 | &cctx->ks.ks); |
0f113f3e MC |
3407 | CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, |
3408 | &cctx->ks, (block128_f) vpaes_encrypt); | |
3409 | cctx->str = NULL; | |
3410 | cctx->key_set = 1; | |
3411 | break; | |
3412 | } | |
5158c763 | 3413 | #endif |
ed576acd | 3414 | AES_set_encrypt_key(key, EVP_CIPHER_CTX_get_key_length(ctx) * 8, |
6435f0f6 | 3415 | &cctx->ks.ks); |
0f113f3e MC |
3416 | CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, |
3417 | &cctx->ks, (block128_f) AES_encrypt); | |
3418 | cctx->str = NULL; | |
3419 | cctx->key_set = 1; | |
3420 | } while (0); | |
3421 | if (iv) { | |
9197c226 | 3422 | memcpy(ctx->iv, iv, 15 - cctx->L); |
0f113f3e MC |
3423 | cctx->iv_set = 1; |
3424 | } | |
3425 | return 1; | |
3426 | } | |
23916810 | 3427 | |
e75c5a79 DSH |
3428 | static int aes_ccm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
3429 | const unsigned char *in, size_t len) | |
3430 | { | |
6435f0f6 | 3431 | EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,ctx); |
e75c5a79 DSH |
3432 | CCM128_CONTEXT *ccm = &cctx->ccm; |
3433 | /* Encrypt/decrypt must be performed in place */ | |
3434 | if (out != in || len < (EVP_CCM_TLS_EXPLICIT_IV_LEN + (size_t)cctx->M)) | |
3435 | return -1; | |
3436 | /* If encrypting set explicit IV from sequence number (start of AAD) */ | |
ed576acd | 3437 | if (EVP_CIPHER_CTX_is_encrypting(ctx)) |
6435f0f6 RL |
3438 | memcpy(out, EVP_CIPHER_CTX_buf_noconst(ctx), |
3439 | EVP_CCM_TLS_EXPLICIT_IV_LEN); | |
e75c5a79 | 3440 | /* Get rest of IV from explicit IV */ |
9197c226 | 3441 | memcpy(ctx->iv + EVP_CCM_TLS_FIXED_IV_LEN, in, |
6435f0f6 | 3442 | EVP_CCM_TLS_EXPLICIT_IV_LEN); |
e75c5a79 DSH |
3443 | /* Correct length value */ |
3444 | len -= EVP_CCM_TLS_EXPLICIT_IV_LEN + cctx->M; | |
9197c226 | 3445 | if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L, |
6435f0f6 | 3446 | len)) |
e75c5a79 DSH |
3447 | return -1; |
3448 | /* Use saved AAD */ | |
ed576acd TM |
3449 | CRYPTO_ccm128_aad(ccm, EVP_CIPHER_CTX_buf_noconst(ctx), |
3450 | cctx->tls_aad_len); | |
e75c5a79 DSH |
3451 | /* Fix buffer to point to payload */ |
3452 | in += EVP_CCM_TLS_EXPLICIT_IV_LEN; | |
3453 | out += EVP_CCM_TLS_EXPLICIT_IV_LEN; | |
ed576acd | 3454 | if (EVP_CIPHER_CTX_is_encrypting(ctx)) { |
e75c5a79 DSH |
3455 | if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len, |
3456 | cctx->str) : | |
3457 | CRYPTO_ccm128_encrypt(ccm, in, out, len)) | |
3458 | return -1; | |
3459 | if (!CRYPTO_ccm128_tag(ccm, out + len, cctx->M)) | |
3460 | return -1; | |
3461 | return len + EVP_CCM_TLS_EXPLICIT_IV_LEN + cctx->M; | |
3462 | } else { | |
3463 | if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len, | |
3464 | cctx->str) : | |
3465 | !CRYPTO_ccm128_decrypt(ccm, in, out, len)) { | |
3466 | unsigned char tag[16]; | |
3467 | if (CRYPTO_ccm128_tag(ccm, tag, cctx->M)) { | |
3468 | if (!CRYPTO_memcmp(tag, in + len, cctx->M)) | |
3469 | return len; | |
3470 | } | |
3471 | } | |
3472 | OPENSSL_cleanse(out, len); | |
3473 | return -1; | |
3474 | } | |
3475 | } | |
3476 | ||
17f121de | 3477 | static int aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e MC |
3478 | const unsigned char *in, size_t len) |
3479 | { | |
6435f0f6 | 3480 | EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,ctx); |
0f113f3e MC |
3481 | CCM128_CONTEXT *ccm = &cctx->ccm; |
3482 | /* If not set up, return error */ | |
e75c5a79 DSH |
3483 | if (!cctx->key_set) |
3484 | return -1; | |
3485 | ||
3486 | if (cctx->tls_aad_len >= 0) | |
3487 | return aes_ccm_tls_cipher(ctx, out, in, len); | |
3488 | ||
197421b1 DSH |
3489 | /* EVP_*Final() doesn't return any data */ |
3490 | if (in == NULL && out != NULL) | |
3491 | return 0; | |
3492 | ||
e75c5a79 | 3493 | if (!cctx->iv_set) |
0f113f3e | 3494 | return -1; |
e75c5a79 | 3495 | |
0f113f3e MC |
3496 | if (!out) { |
3497 | if (!in) { | |
9197c226 | 3498 | if (CRYPTO_ccm128_setiv(ccm, ctx->iv, |
6435f0f6 | 3499 | 15 - cctx->L, len)) |
0f113f3e MC |
3500 | return -1; |
3501 | cctx->len_set = 1; | |
3502 | return len; | |
3503 | } | |
3504 | /* If have AAD need message length */ | |
3505 | if (!cctx->len_set && len) | |
3506 | return -1; | |
3507 | CRYPTO_ccm128_aad(ccm, in, len); | |
3508 | return len; | |
3509 | } | |
67c81ec3 TN |
3510 | |
3511 | /* The tag must be set before actually decrypting data */ | |
ed576acd | 3512 | if (!EVP_CIPHER_CTX_is_encrypting(ctx) && !cctx->tag_set) |
67c81ec3 TN |
3513 | return -1; |
3514 | ||
0f113f3e MC |
3515 | /* If not set length yet do it */ |
3516 | if (!cctx->len_set) { | |
9197c226 | 3517 | if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L, len)) |
0f113f3e MC |
3518 | return -1; |
3519 | cctx->len_set = 1; | |
3520 | } | |
ed576acd | 3521 | if (EVP_CIPHER_CTX_is_encrypting(ctx)) { |
0f113f3e MC |
3522 | if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len, |
3523 | cctx->str) : | |
3524 | CRYPTO_ccm128_encrypt(ccm, in, out, len)) | |
3525 | return -1; | |
3526 | cctx->tag_set = 1; | |
3527 | return len; | |
3528 | } else { | |
3529 | int rv = -1; | |
3530 | if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len, | |
3531 | cctx->str) : | |
3532 | !CRYPTO_ccm128_decrypt(ccm, in, out, len)) { | |
3533 | unsigned char tag[16]; | |
3534 | if (CRYPTO_ccm128_tag(ccm, tag, cctx->M)) { | |
6435f0f6 RL |
3535 | if (!CRYPTO_memcmp(tag, EVP_CIPHER_CTX_buf_noconst(ctx), |
3536 | cctx->M)) | |
0f113f3e MC |
3537 | rv = len; |
3538 | } | |
3539 | } | |
3540 | if (rv == -1) | |
3541 | OPENSSL_cleanse(out, len); | |
3542 | cctx->iv_set = 0; | |
3543 | cctx->tag_set = 0; | |
3544 | cctx->len_set = 0; | |
3545 | return rv; | |
3546 | } | |
0f113f3e MC |
3547 | } |
3548 | ||
5158c763 | 3549 | #define aes_ccm_cleanup NULL |
0f113f3e | 3550 | |
e75c5a79 DSH |
3551 | BLOCK_CIPHER_custom(NID_aes, 128, 1, 12, ccm, CCM, |
3552 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) | |
f6c95e46 RS |
3553 | BLOCK_CIPHER_custom(NID_aes, 192, 1, 12, ccm, CCM, |
3554 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) | |
3555 | BLOCK_CIPHER_custom(NID_aes, 256, 1, 12, ccm, CCM, | |
3556 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) | |
0f113f3e MC |
3557 | |
3558 | typedef struct { | |
3559 | union { | |
39147079 | 3560 | OSSL_UNION_ALIGN; |
0f113f3e MC |
3561 | AES_KEY ks; |
3562 | } ks; | |
3563 | /* Indicates if IV has been set */ | |
3564 | unsigned char *iv; | |
3565 | } EVP_AES_WRAP_CTX; | |
97cf1f6c DSH |
3566 | |
3567 | static int aes_wrap_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
3568 | const unsigned char *iv, int enc) |
3569 | { | |
0341ff97 | 3570 | int len; |
6435f0f6 | 3571 | EVP_AES_WRAP_CTX *wctx = EVP_C_DATA(EVP_AES_WRAP_CTX,ctx); |
0341ff97 P |
3572 | |
3573 | if (iv == NULL && key == NULL) | |
0f113f3e | 3574 | return 1; |
0341ff97 | 3575 | if (key != NULL) { |
ed576acd TM |
3576 | if (EVP_CIPHER_CTX_is_encrypting(ctx)) |
3577 | AES_set_encrypt_key(key, EVP_CIPHER_CTX_get_key_length(ctx) * 8, | |
6435f0f6 | 3578 | &wctx->ks.ks); |
0f113f3e | 3579 | else |
ed576acd | 3580 | AES_set_decrypt_key(key, EVP_CIPHER_CTX_get_key_length(ctx) * 8, |
6435f0f6 | 3581 | &wctx->ks.ks); |
0341ff97 | 3582 | if (iv == NULL) |
0f113f3e MC |
3583 | wctx->iv = NULL; |
3584 | } | |
0341ff97 P |
3585 | if (iv != NULL) { |
3586 | if ((len = EVP_CIPHER_CTX_get_iv_length(ctx)) < 0) | |
3587 | return 0; | |
3588 | memcpy(ctx->iv, iv, len); | |
9197c226 | 3589 | wctx->iv = ctx->iv; |
0f113f3e MC |
3590 | } |
3591 | return 1; | |
3592 | } | |
97cf1f6c DSH |
3593 | |
3594 | static int aes_wrap_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
0f113f3e MC |
3595 | const unsigned char *in, size_t inlen) |
3596 | { | |
6435f0f6 | 3597 | EVP_AES_WRAP_CTX *wctx = EVP_C_DATA(EVP_AES_WRAP_CTX,ctx); |
0f113f3e MC |
3598 | size_t rv; |
3599 | /* AES wrap with padding has IV length of 4, without padding 8 */ | |
ed576acd | 3600 | int pad = EVP_CIPHER_CTX_get_iv_length(ctx) == 4; |
0f113f3e MC |
3601 | /* No final operation so always return zero length */ |
3602 | if (!in) | |
3603 | return 0; | |
3604 | /* Input length must always be non-zero */ | |
3605 | if (!inlen) | |
3606 | return -1; | |
3607 | /* If decrypting need at least 16 bytes and multiple of 8 */ | |
ed576acd | 3608 | if (!EVP_CIPHER_CTX_is_encrypting(ctx) && (inlen < 16 || inlen & 0x7)) |
0f113f3e MC |
3609 | return -1; |
3610 | /* If not padding input must be multiple of 8 */ | |
3611 | if (!pad && inlen & 0x7) | |
3612 | return -1; | |
6d777689 | 3613 | if (ossl_is_partially_overlapping(out, in, inlen)) { |
9311d0c4 | 3614 | ERR_raise(ERR_LIB_EVP, EVP_R_PARTIALLY_OVERLAPPING); |
7141ba31 MC |
3615 | return 0; |
3616 | } | |
0f113f3e | 3617 | if (!out) { |
ed576acd | 3618 | if (EVP_CIPHER_CTX_is_encrypting(ctx)) { |
0f113f3e MC |
3619 | /* If padding round up to multiple of 8 */ |
3620 | if (pad) | |
3621 | inlen = (inlen + 7) / 8 * 8; | |
3622 | /* 8 byte prefix */ | |
3623 | return inlen + 8; | |
3624 | } else { | |
3625 | /* | |
3626 | * If not padding output will be exactly 8 bytes smaller than | |
3627 | * input. If padding it will be at least 8 bytes smaller but we | |
3628 | * don't know how much. | |
3629 | */ | |
3630 | return inlen - 8; | |
3631 | } | |
3632 | } | |
3633 | if (pad) { | |
ed576acd | 3634 | if (EVP_CIPHER_CTX_is_encrypting(ctx)) |
0f113f3e MC |
3635 | rv = CRYPTO_128_wrap_pad(&wctx->ks.ks, wctx->iv, |
3636 | out, in, inlen, | |
3637 | (block128_f) AES_encrypt); | |
3638 | else | |
3639 | rv = CRYPTO_128_unwrap_pad(&wctx->ks.ks, wctx->iv, | |
3640 | out, in, inlen, | |
3641 | (block128_f) AES_decrypt); | |
3642 | } else { | |
ed576acd | 3643 | if (EVP_CIPHER_CTX_is_encrypting(ctx)) |
0f113f3e MC |
3644 | rv = CRYPTO_128_wrap(&wctx->ks.ks, wctx->iv, |
3645 | out, in, inlen, (block128_f) AES_encrypt); | |
3646 | else | |
3647 | rv = CRYPTO_128_unwrap(&wctx->ks.ks, wctx->iv, | |
3648 | out, in, inlen, (block128_f) AES_decrypt); | |
3649 | } | |
3650 | return rv ? (int)rv : -1; | |
3651 | } | |
3652 | ||
5158c763 | 3653 | #define WRAP_FLAGS (EVP_CIPH_WRAP_MODE \ |
0f113f3e MC |
3654 | | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \ |
3655 | | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_FLAG_DEFAULT_ASN1) | |
97cf1f6c DSH |
3656 | |
3657 | static const EVP_CIPHER aes_128_wrap = { | |
0f113f3e | 3658 | NID_id_aes128_wrap, |
f6c95e46 | 3659 | 8, 16, 8, WRAP_FLAGS, EVP_ORIG_GLOBAL, |
0f113f3e MC |
3660 | aes_wrap_init_key, aes_wrap_cipher, |
3661 | NULL, | |
3662 | sizeof(EVP_AES_WRAP_CTX), | |
3663 | NULL, NULL, NULL, NULL | |
3664 | }; | |
97cf1f6c DSH |
3665 | |
3666 | const EVP_CIPHER *EVP_aes_128_wrap(void) | |
0f113f3e MC |
3667 | { |
3668 | return &aes_128_wrap; | |
3669 | } | |
97cf1f6c DSH |
3670 | |
3671 | static const EVP_CIPHER aes_192_wrap = { | |
0f113f3e | 3672 | NID_id_aes192_wrap, |
f6c95e46 | 3673 | 8, 24, 8, WRAP_FLAGS, EVP_ORIG_GLOBAL, |
0f113f3e MC |
3674 | aes_wrap_init_key, aes_wrap_cipher, |
3675 | NULL, | |
3676 | sizeof(EVP_AES_WRAP_CTX), | |
3677 | NULL, NULL, NULL, NULL | |
3678 | }; | |
97cf1f6c DSH |
3679 | |
3680 | const EVP_CIPHER *EVP_aes_192_wrap(void) | |
0f113f3e MC |
3681 | { |
3682 | return &aes_192_wrap; | |
3683 | } | |
97cf1f6c DSH |
3684 | |
3685 | static const EVP_CIPHER aes_256_wrap = { | |
0f113f3e | 3686 | NID_id_aes256_wrap, |
f6c95e46 | 3687 | 8, 32, 8, WRAP_FLAGS, EVP_ORIG_GLOBAL, |
0f113f3e MC |
3688 | aes_wrap_init_key, aes_wrap_cipher, |
3689 | NULL, | |
3690 | sizeof(EVP_AES_WRAP_CTX), | |
3691 | NULL, NULL, NULL, NULL | |
3692 | }; | |
97cf1f6c DSH |
3693 | |
3694 | const EVP_CIPHER *EVP_aes_256_wrap(void) | |
0f113f3e MC |
3695 | { |
3696 | return &aes_256_wrap; | |
3697 | } | |
97cf1f6c | 3698 | |
d31fed73 | 3699 | static const EVP_CIPHER aes_128_wrap_pad = { |
0f113f3e | 3700 | NID_id_aes128_wrap_pad, |
f6c95e46 | 3701 | 8, 16, 4, WRAP_FLAGS, EVP_ORIG_GLOBAL, |
0f113f3e MC |
3702 | aes_wrap_init_key, aes_wrap_cipher, |
3703 | NULL, | |
3704 | sizeof(EVP_AES_WRAP_CTX), | |
3705 | NULL, NULL, NULL, NULL | |
3706 | }; | |
d31fed73 DSH |
3707 | |
3708 | const EVP_CIPHER *EVP_aes_128_wrap_pad(void) | |
0f113f3e MC |
3709 | { |
3710 | return &aes_128_wrap_pad; | |
3711 | } | |
d31fed73 DSH |
3712 | |
3713 | static const EVP_CIPHER aes_192_wrap_pad = { | |
0f113f3e | 3714 | NID_id_aes192_wrap_pad, |
f6c95e46 | 3715 | 8, 24, 4, WRAP_FLAGS, EVP_ORIG_GLOBAL, |
0f113f3e MC |
3716 | aes_wrap_init_key, aes_wrap_cipher, |
3717 | NULL, | |
3718 | sizeof(EVP_AES_WRAP_CTX), | |
3719 | NULL, NULL, NULL, NULL | |
3720 | }; | |
d31fed73 DSH |
3721 | |
3722 | const EVP_CIPHER *EVP_aes_192_wrap_pad(void) | |
0f113f3e MC |
3723 | { |
3724 | return &aes_192_wrap_pad; | |
3725 | } | |
d31fed73 DSH |
3726 | |
3727 | static const EVP_CIPHER aes_256_wrap_pad = { | |
0f113f3e | 3728 | NID_id_aes256_wrap_pad, |
f6c95e46 | 3729 | 8, 32, 4, WRAP_FLAGS, EVP_ORIG_GLOBAL, |
0f113f3e MC |
3730 | aes_wrap_init_key, aes_wrap_cipher, |
3731 | NULL, | |
3732 | sizeof(EVP_AES_WRAP_CTX), | |
3733 | NULL, NULL, NULL, NULL | |
3734 | }; | |
d31fed73 DSH |
3735 | |
3736 | const EVP_CIPHER *EVP_aes_256_wrap_pad(void) | |
0f113f3e MC |
3737 | { |
3738 | return &aes_256_wrap_pad; | |
3739 | } | |
d31fed73 | 3740 | |
5158c763 | 3741 | #ifndef OPENSSL_NO_OCB |
e6b336ef | 3742 | static int aes_ocb_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) |
0f113f3e | 3743 | { |
6435f0f6 | 3744 | EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,c); |
0f113f3e MC |
3745 | EVP_CIPHER_CTX *newc; |
3746 | EVP_AES_OCB_CTX *new_octx; | |
3747 | ||
3748 | switch (type) { | |
3749 | case EVP_CTRL_INIT: | |
3750 | octx->key_set = 0; | |
3751 | octx->iv_set = 0; | |
ed576acd | 3752 | octx->ivlen = EVP_CIPHER_get_iv_length(c->cipher); |
9197c226 | 3753 | octx->iv = c->iv; |
0f113f3e MC |
3754 | octx->taglen = 16; |
3755 | octx->data_buf_len = 0; | |
3756 | octx->aad_buf_len = 0; | |
3757 | return 1; | |
3758 | ||
7dddf2fc SL |
3759 | case EVP_CTRL_GET_IVLEN: |
3760 | *(int *)ptr = octx->ivlen; | |
3761 | return 1; | |
3762 | ||
e640fa02 | 3763 | case EVP_CTRL_AEAD_SET_IVLEN: |
0f113f3e MC |
3764 | /* IV len must be 1 to 15 */ |
3765 | if (arg <= 0 || arg > 15) | |
3766 | return 0; | |
3767 | ||
3768 | octx->ivlen = arg; | |
3769 | return 1; | |
3770 | ||
e640fa02 | 3771 | case EVP_CTRL_AEAD_SET_TAG: |
12a765a5 | 3772 | if (ptr == NULL) { |
d57d135c MC |
3773 | /* Tag len must be 0 to 16 */ |
3774 | if (arg < 0 || arg > 16) | |
3775 | return 0; | |
3776 | ||
3777 | octx->taglen = arg; | |
3778 | return 1; | |
3779 | } | |
ed576acd | 3780 | if (arg != octx->taglen || EVP_CIPHER_CTX_is_encrypting(c)) |
0f113f3e MC |
3781 | return 0; |
3782 | memcpy(octx->tag, ptr, arg); | |
3783 | return 1; | |
3784 | ||
e640fa02 | 3785 | case EVP_CTRL_AEAD_GET_TAG: |
ed576acd | 3786 | if (arg != octx->taglen || !EVP_CIPHER_CTX_is_encrypting(c)) |
0f113f3e MC |
3787 | return 0; |
3788 | ||
3789 | memcpy(ptr, octx->tag, arg); | |
3790 | return 1; | |
3791 | ||
3792 | case EVP_CTRL_COPY: | |
3793 | newc = (EVP_CIPHER_CTX *)ptr; | |
6435f0f6 | 3794 | new_octx = EVP_C_DATA(EVP_AES_OCB_CTX,newc); |
0f113f3e | 3795 | return CRYPTO_ocb128_copy_ctx(&new_octx->ocb, &octx->ocb, |
bdc985b1 AP |
3796 | &new_octx->ksenc.ks, |
3797 | &new_octx->ksdec.ks); | |
0f113f3e MC |
3798 | |
3799 | default: | |
3800 | return -1; | |
3801 | ||
3802 | } | |
3803 | } | |
e6b336ef MC |
3804 | |
3805 | static int aes_ocb_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
3806 | const unsigned char *iv, int enc) |
3807 | { | |
6435f0f6 | 3808 | EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,ctx); |
0f113f3e MC |
3809 | if (!iv && !key) |
3810 | return 1; | |
3811 | if (key) { | |
3812 | do { | |
3813 | /* | |
3814 | * We set both the encrypt and decrypt key here because decrypt | |
3815 | * needs both. We could possibly optimise to remove setting the | |
3816 | * decrypt for an encryption operation. | |
3817 | */ | |
5158c763 | 3818 | # ifdef HWAES_CAPABLE |
02dc0b82 | 3819 | if (HWAES_CAPABLE) { |
ed576acd | 3820 | HWAES_set_encrypt_key(key, EVP_CIPHER_CTX_get_key_length(ctx) * 8, |
6435f0f6 | 3821 | &octx->ksenc.ks); |
ed576acd | 3822 | HWAES_set_decrypt_key(key, EVP_CIPHER_CTX_get_key_length(ctx) * 8, |
6435f0f6 | 3823 | &octx->ksdec.ks); |
02dc0b82 AP |
3824 | if (!CRYPTO_ocb128_init(&octx->ocb, |
3825 | &octx->ksenc.ks, &octx->ksdec.ks, | |
3826 | (block128_f) HWAES_encrypt, | |
3827 | (block128_f) HWAES_decrypt, | |
3828 | enc ? HWAES_ocb_encrypt | |
3829 | : HWAES_ocb_decrypt)) | |
3830 | return 0; | |
3831 | break; | |
3832 | } | |
5158c763 MC |
3833 | # endif |
3834 | # ifdef VPAES_CAPABLE | |
0f113f3e | 3835 | if (VPAES_CAPABLE) { |
ed576acd TM |
3836 | vpaes_set_encrypt_key(key, |
3837 | EVP_CIPHER_CTX_get_key_length(ctx) * 8, | |
6435f0f6 | 3838 | &octx->ksenc.ks); |
ed576acd TM |
3839 | vpaes_set_decrypt_key(key, |
3840 | EVP_CIPHER_CTX_get_key_length(ctx) * 8, | |
6435f0f6 | 3841 | &octx->ksdec.ks); |
bdc985b1 AP |
3842 | if (!CRYPTO_ocb128_init(&octx->ocb, |
3843 | &octx->ksenc.ks, &octx->ksdec.ks, | |
3844 | (block128_f) vpaes_encrypt, | |
bd30091c AP |
3845 | (block128_f) vpaes_decrypt, |
3846 | NULL)) | |
0f113f3e MC |
3847 | return 0; |
3848 | break; | |
3849 | } | |
5158c763 | 3850 | # endif |
ed576acd | 3851 | AES_set_encrypt_key(key, EVP_CIPHER_CTX_get_key_length(ctx) * 8, |
6435f0f6 | 3852 | &octx->ksenc.ks); |
ed576acd | 3853 | AES_set_decrypt_key(key, EVP_CIPHER_CTX_get_key_length(ctx) * 8, |
6435f0f6 | 3854 | &octx->ksdec.ks); |
bdc985b1 AP |
3855 | if (!CRYPTO_ocb128_init(&octx->ocb, |
3856 | &octx->ksenc.ks, &octx->ksdec.ks, | |
0f113f3e | 3857 | (block128_f) AES_encrypt, |
bd30091c AP |
3858 | (block128_f) AES_decrypt, |
3859 | NULL)) | |
0f113f3e MC |
3860 | return 0; |
3861 | } | |
3862 | while (0); | |
3863 | ||
3864 | /* | |
3865 | * If we have an iv we can set it directly, otherwise use saved IV. | |
3866 | */ | |
3867 | if (iv == NULL && octx->iv_set) | |
3868 | iv = octx->iv; | |
3869 | if (iv) { | |
3870 | if (CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen) | |
3871 | != 1) | |
3872 | return 0; | |
3873 | octx->iv_set = 1; | |
3874 | } | |
3875 | octx->key_set = 1; | |
3876 | } else { | |
3877 | /* If key set use IV, otherwise copy */ | |
3878 | if (octx->key_set) | |
3879 | CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen); | |
3880 | else | |
3881 | memcpy(octx->iv, iv, octx->ivlen); | |
3882 | octx->iv_set = 1; | |
3883 | } | |
3884 | return 1; | |
3885 | } | |
e6b336ef MC |
3886 | |
3887 | static int aes_ocb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
0f113f3e MC |
3888 | const unsigned char *in, size_t len) |
3889 | { | |
3890 | unsigned char *buf; | |
3891 | int *buf_len; | |
3892 | int written_len = 0; | |
3893 | size_t trailing_len; | |
6435f0f6 | 3894 | EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,ctx); |
0f113f3e MC |
3895 | |
3896 | /* If IV or Key not set then return error */ | |
3897 | if (!octx->iv_set) | |
3898 | return -1; | |
3899 | ||
3900 | if (!octx->key_set) | |
3901 | return -1; | |
3902 | ||
0ba5a9ea | 3903 | if (in != NULL) { |
0f113f3e MC |
3904 | /* |
3905 | * Need to ensure we are only passing full blocks to low level OCB | |
3906 | * routines. We do it here rather than in EVP_EncryptUpdate/ | |
3907 | * EVP_DecryptUpdate because we need to pass full blocks of AAD too | |
3908 | * and those routines don't support that | |
3909 | */ | |
3910 | ||
3911 | /* Are we dealing with AAD or normal data here? */ | |
3912 | if (out == NULL) { | |
3913 | buf = octx->aad_buf; | |
3914 | buf_len = &(octx->aad_buf_len); | |
3915 | } else { | |
3916 | buf = octx->data_buf; | |
3917 | buf_len = &(octx->data_buf_len); | |
7141ba31 | 3918 | |
6d777689 | 3919 | if (ossl_is_partially_overlapping(out + *buf_len, in, len)) { |
9311d0c4 | 3920 | ERR_raise(ERR_LIB_EVP, EVP_R_PARTIALLY_OVERLAPPING); |
7141ba31 MC |
3921 | return 0; |
3922 | } | |
0f113f3e MC |
3923 | } |
3924 | ||
3925 | /* | |
3926 | * If we've got a partially filled buffer from a previous call then | |
3927 | * use that data first | |
3928 | */ | |
0ba5a9ea | 3929 | if (*buf_len > 0) { |
0f113f3e MC |
3930 | unsigned int remaining; |
3931 | ||
0ba5a9ea | 3932 | remaining = AES_BLOCK_SIZE - (*buf_len); |
0f113f3e MC |
3933 | if (remaining > len) { |
3934 | memcpy(buf + (*buf_len), in, len); | |
3935 | *(buf_len) += len; | |
3936 | return 0; | |
3937 | } | |
3938 | memcpy(buf + (*buf_len), in, remaining); | |
3939 | ||
3940 | /* | |
3941 | * If we get here we've filled the buffer, so process it | |
3942 | */ | |
3943 | len -= remaining; | |
3944 | in += remaining; | |
3945 | if (out == NULL) { | |
0ba5a9ea | 3946 | if (!CRYPTO_ocb128_aad(&octx->ocb, buf, AES_BLOCK_SIZE)) |
0f113f3e | 3947 | return -1; |
ed576acd | 3948 | } else if (EVP_CIPHER_CTX_is_encrypting(ctx)) { |
0ba5a9ea MC |
3949 | if (!CRYPTO_ocb128_encrypt(&octx->ocb, buf, out, |
3950 | AES_BLOCK_SIZE)) | |
0f113f3e MC |
3951 | return -1; |
3952 | } else { | |
0ba5a9ea MC |
3953 | if (!CRYPTO_ocb128_decrypt(&octx->ocb, buf, out, |
3954 | AES_BLOCK_SIZE)) | |
0f113f3e MC |
3955 | return -1; |
3956 | } | |
0ba5a9ea | 3957 | written_len = AES_BLOCK_SIZE; |
0f113f3e | 3958 | *buf_len = 0; |
7c12c7b6 MC |
3959 | if (out != NULL) |
3960 | out += AES_BLOCK_SIZE; | |
0f113f3e MC |
3961 | } |
3962 | ||
3963 | /* Do we have a partial block to handle at the end? */ | |
0ba5a9ea | 3964 | trailing_len = len % AES_BLOCK_SIZE; |
0f113f3e MC |
3965 | |
3966 | /* | |
3967 | * If we've got some full blocks to handle, then process these first | |
3968 | */ | |
3969 | if (len != trailing_len) { | |
3970 | if (out == NULL) { | |
3971 | if (!CRYPTO_ocb128_aad(&octx->ocb, in, len - trailing_len)) | |
3972 | return -1; | |
ed576acd | 3973 | } else if (EVP_CIPHER_CTX_is_encrypting(ctx)) { |
0f113f3e MC |
3974 | if (!CRYPTO_ocb128_encrypt |
3975 | (&octx->ocb, in, out, len - trailing_len)) | |
3976 | return -1; | |
3977 | } else { | |
3978 | if (!CRYPTO_ocb128_decrypt | |
3979 | (&octx->ocb, in, out, len - trailing_len)) | |
3980 | return -1; | |
3981 | } | |
3982 | written_len += len - trailing_len; | |
3983 | in += len - trailing_len; | |
3984 | } | |
3985 | ||
3986 | /* Handle any trailing partial block */ | |
0ba5a9ea | 3987 | if (trailing_len > 0) { |
0f113f3e MC |
3988 | memcpy(buf, in, trailing_len); |
3989 | *buf_len = trailing_len; | |
3990 | } | |
3991 | ||
3992 | return written_len; | |
3993 | } else { | |
3994 | /* | |
3995 | * First of all empty the buffer of any partial block that we might | |
3996 | * have been provided - both for data and AAD | |
3997 | */ | |
0ba5a9ea | 3998 | if (octx->data_buf_len > 0) { |
ed576acd | 3999 | if (EVP_CIPHER_CTX_is_encrypting(ctx)) { |
0f113f3e MC |
4000 | if (!CRYPTO_ocb128_encrypt(&octx->ocb, octx->data_buf, out, |
4001 | octx->data_buf_len)) | |
4002 | return -1; | |
4003 | } else { | |
4004 | if (!CRYPTO_ocb128_decrypt(&octx->ocb, octx->data_buf, out, | |
4005 | octx->data_buf_len)) | |
4006 | return -1; | |
4007 | } | |
4008 | written_len = octx->data_buf_len; | |
4009 | octx->data_buf_len = 0; | |
4010 | } | |
0ba5a9ea | 4011 | if (octx->aad_buf_len > 0) { |
0f113f3e MC |
4012 | if (!CRYPTO_ocb128_aad |
4013 | (&octx->ocb, octx->aad_buf, octx->aad_buf_len)) | |
4014 | return -1; | |
4015 | octx->aad_buf_len = 0; | |
4016 | } | |
4017 | /* If decrypting then verify */ | |
ed576acd | 4018 | if (!EVP_CIPHER_CTX_is_encrypting(ctx)) { |
0f113f3e MC |
4019 | if (octx->taglen < 0) |
4020 | return -1; | |
4021 | if (CRYPTO_ocb128_finish(&octx->ocb, | |
4022 | octx->tag, octx->taglen) != 0) | |
4023 | return -1; | |
4024 | octx->iv_set = 0; | |
4025 | return written_len; | |
4026 | } | |
4027 | /* If encrypting then just get the tag */ | |
4028 | if (CRYPTO_ocb128_tag(&octx->ocb, octx->tag, 16) != 1) | |
4029 | return -1; | |
4030 | /* Don't reuse the IV */ | |
4031 | octx->iv_set = 0; | |
4032 | return written_len; | |
4033 | } | |
4034 | } | |
e6b336ef MC |
4035 | |
4036 | static int aes_ocb_cleanup(EVP_CIPHER_CTX *c) | |
0f113f3e | 4037 | { |
6435f0f6 | 4038 | EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,c); |
0f113f3e MC |
4039 | CRYPTO_ocb128_cleanup(&octx->ocb); |
4040 | return 1; | |
4041 | } | |
e6b336ef | 4042 | |
c4aede20 MC |
4043 | BLOCK_CIPHER_custom(NID_aes, 128, 16, 12, ocb, OCB, |
4044 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) | |
4045 | BLOCK_CIPHER_custom(NID_aes, 192, 16, 12, ocb, OCB, | |
4046 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) | |
4047 | BLOCK_CIPHER_custom(NID_aes, 256, 16, 12, ocb, OCB, | |
4048 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) | |
5158c763 | 4049 | #endif /* OPENSSL_NO_OCB */ |