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aa6bb135 | 1 | /* |
5516c19b | 2 | * Copyright 2001-2019 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 | ||
743694a6 MC |
10 | #include <string.h> |
11 | #include <assert.h> | |
8c84b677 | 12 | #include <openssl/opensslconf.h> |
5158c763 MC |
13 | #include <openssl/crypto.h> |
14 | #include <openssl/evp.h> | |
15 | #include <openssl/err.h> | |
5158c763 | 16 | #include <openssl/aes.h> |
743694a6 MC |
17 | #include <openssl/rand.h> |
18 | #include <openssl/cmac.h> | |
25f2138b | 19 | #include "crypto/evp.h" |
39147079 | 20 | #include "internal/cryptlib.h" |
25f2138b DMSP |
21 | #include "crypto/modes.h" |
22 | #include "crypto/siv.h" | |
23 | #include "crypto/ciphermode_platform.h" | |
706457b7 | 24 | #include "evp_local.h" |
0f113f3e MC |
25 | |
26 | typedef struct { | |
27 | union { | |
39147079 | 28 | OSSL_UNION_ALIGN; |
0f113f3e MC |
29 | AES_KEY ks; |
30 | } ks; | |
31 | block128_f block; | |
32 | union { | |
33 | cbc128_f cbc; | |
34 | ctr128_f ctr; | |
35 | } stream; | |
36 | } EVP_AES_KEY; | |
37 | ||
38 | typedef struct { | |
39 | union { | |
39147079 | 40 | OSSL_UNION_ALIGN; |
0f113f3e MC |
41 | AES_KEY ks; |
42 | } ks; /* AES key schedule to use */ | |
43 | int key_set; /* Set if key initialised */ | |
44 | int iv_set; /* Set if an iv is set */ | |
45 | GCM128_CONTEXT gcm; | |
46 | unsigned char *iv; /* Temporary IV store */ | |
47 | int ivlen; /* IV length */ | |
48 | int taglen; | |
49 | int iv_gen; /* It is OK to generate IVs */ | |
bcf082d1 | 50 | int iv_gen_rand; /* No IV was specified, so generate a rand IV */ |
0f113f3e | 51 | int tls_aad_len; /* TLS AAD length */ |
d6b34570 | 52 | uint64_t tls_enc_records; /* Number of TLS records encrypted */ |
0f113f3e MC |
53 | ctr128_f ctr; |
54 | } EVP_AES_GCM_CTX; | |
55 | ||
56 | typedef struct { | |
57 | union { | |
39147079 | 58 | OSSL_UNION_ALIGN; |
0f113f3e MC |
59 | AES_KEY ks; |
60 | } ks1, ks2; /* AES key schedules to use */ | |
61 | XTS128_CONTEXT xts; | |
62 | void (*stream) (const unsigned char *in, | |
63 | unsigned char *out, size_t length, | |
64 | const AES_KEY *key1, const AES_KEY *key2, | |
65 | const unsigned char iv[16]); | |
66 | } EVP_AES_XTS_CTX; | |
67 | ||
2c840201 P |
68 | #ifdef FIPS_MODE |
69 | static const int allow_insecure_decrypt = 0; | |
70 | #else | |
71 | static const int allow_insecure_decrypt = 1; | |
72 | #endif | |
73 | ||
0f113f3e MC |
74 | typedef struct { |
75 | union { | |
39147079 | 76 | OSSL_UNION_ALIGN; |
0f113f3e MC |
77 | AES_KEY ks; |
78 | } ks; /* AES key schedule to use */ | |
79 | int key_set; /* Set if key initialised */ | |
80 | int iv_set; /* Set if an iv is set */ | |
81 | int tag_set; /* Set if tag is valid */ | |
82 | int len_set; /* Set if message length set */ | |
83 | int L, M; /* L and M parameters from RFC3610 */ | |
e75c5a79 | 84 | int tls_aad_len; /* TLS AAD length */ |
0f113f3e MC |
85 | CCM128_CONTEXT ccm; |
86 | ccm128_f str; | |
87 | } EVP_AES_CCM_CTX; | |
88 | ||
5158c763 | 89 | #ifndef OPENSSL_NO_OCB |
0f113f3e | 90 | typedef struct { |
bdc985b1 | 91 | union { |
39147079 | 92 | OSSL_UNION_ALIGN; |
bdc985b1 AP |
93 | AES_KEY ks; |
94 | } ksenc; /* AES key schedule to use for encryption */ | |
95 | union { | |
39147079 | 96 | OSSL_UNION_ALIGN; |
bdc985b1 AP |
97 | AES_KEY ks; |
98 | } ksdec; /* AES key schedule to use for decryption */ | |
0f113f3e MC |
99 | int key_set; /* Set if key initialised */ |
100 | int iv_set; /* Set if an iv is set */ | |
101 | OCB128_CONTEXT ocb; | |
102 | unsigned char *iv; /* Temporary IV store */ | |
103 | unsigned char tag[16]; | |
104 | unsigned char data_buf[16]; /* Store partial data blocks */ | |
105 | unsigned char aad_buf[16]; /* Store partial AAD blocks */ | |
106 | int data_buf_len; | |
107 | int aad_buf_len; | |
108 | int ivlen; /* IV length */ | |
109 | int taglen; | |
110 | } EVP_AES_OCB_CTX; | |
5158c763 | 111 | #endif |
e6b336ef | 112 | |
5158c763 | 113 | #define MAXBITCHUNK ((size_t)1<<(sizeof(size_t)*8-4)) |
17f121de | 114 | |
03a5e5ae PS |
115 | /* increment counter (64-bit int) by 1 */ |
116 | static void ctr64_inc(unsigned char *counter) | |
117 | { | |
118 | int n = 8; | |
119 | unsigned char c; | |
120 | ||
121 | do { | |
122 | --n; | |
123 | c = counter[n]; | |
124 | ++c; | |
125 | counter[n] = c; | |
126 | if (c) | |
127 | return; | |
128 | } while (n); | |
129 | } | |
130 | ||
459b15d4 | 131 | #if defined(AESNI_CAPABLE) |
5158c763 | 132 | # if defined(__x86_64) || defined(__x86_64__) || defined(_M_AMD64) || defined(_M_X64) |
5158c763 | 133 | # define AES_gcm_encrypt aesni_gcm_encrypt |
5158c763 | 134 | # define AES_gcm_decrypt aesni_gcm_decrypt |
5158c763 | 135 | # define AES_GCM_ASM2(gctx) (gctx->gcm.block==(block128_f)aesni_encrypt && \ |
0f113f3e | 136 | gctx->gcm.ghash==gcm_ghash_avx) |
5158c763 MC |
137 | # undef AES_GCM_ASM2 /* minor size optimization */ |
138 | # endif | |
4e049c52 | 139 | |
17f121de | 140 | static int aesni_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, |
0f113f3e MC |
141 | const unsigned char *iv, int enc) |
142 | { | |
143 | int ret, mode; | |
6435f0f6 | 144 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); |
0f113f3e | 145 | |
6435f0f6 | 146 | mode = EVP_CIPHER_CTX_mode(ctx); |
0f113f3e MC |
147 | if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE) |
148 | && !enc) { | |
6435f0f6 RL |
149 | ret = aesni_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, |
150 | &dat->ks.ks); | |
0f113f3e MC |
151 | dat->block = (block128_f) aesni_decrypt; |
152 | dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? | |
153 | (cbc128_f) aesni_cbc_encrypt : NULL; | |
154 | } else { | |
6435f0f6 RL |
155 | ret = aesni_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, |
156 | &dat->ks.ks); | |
0f113f3e MC |
157 | dat->block = (block128_f) aesni_encrypt; |
158 | if (mode == EVP_CIPH_CBC_MODE) | |
159 | dat->stream.cbc = (cbc128_f) aesni_cbc_encrypt; | |
160 | else if (mode == EVP_CIPH_CTR_MODE) | |
161 | dat->stream.ctr = (ctr128_f) aesni_ctr32_encrypt_blocks; | |
162 | else | |
163 | dat->stream.cbc = NULL; | |
164 | } | |
165 | ||
166 | if (ret < 0) { | |
167 | EVPerr(EVP_F_AESNI_INIT_KEY, EVP_R_AES_KEY_SETUP_FAILED); | |
168 | return 0; | |
169 | } | |
170 | ||
171 | return 1; | |
172 | } | |
173 | ||
174 | static int aesni_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
175 | const unsigned char *in, size_t len) | |
d1fff483 | 176 | { |
6435f0f6 RL |
177 | aesni_cbc_encrypt(in, out, len, &EVP_C_DATA(EVP_AES_KEY,ctx)->ks.ks, |
178 | EVP_CIPHER_CTX_iv_noconst(ctx), | |
179 | EVP_CIPHER_CTX_encrypting(ctx)); | |
d1fff483 | 180 | |
0f113f3e | 181 | return 1; |
d1fff483 AP |
182 | } |
183 | ||
0f113f3e MC |
184 | static int aesni_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
185 | const unsigned char *in, size_t len) | |
d1fff483 | 186 | { |
6435f0f6 | 187 | size_t bl = EVP_CIPHER_CTX_block_size(ctx); |
d1fff483 | 188 | |
0f113f3e MC |
189 | if (len < bl) |
190 | return 1; | |
d1fff483 | 191 | |
6435f0f6 RL |
192 | aesni_ecb_encrypt(in, out, len, &EVP_C_DATA(EVP_AES_KEY,ctx)->ks.ks, |
193 | EVP_CIPHER_CTX_encrypting(ctx)); | |
d1fff483 | 194 | |
0f113f3e | 195 | return 1; |
d1fff483 AP |
196 | } |
197 | ||
5158c763 | 198 | # define aesni_ofb_cipher aes_ofb_cipher |
0f113f3e MC |
199 | static int aesni_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
200 | const unsigned char *in, size_t len); | |
d1fff483 | 201 | |
5158c763 | 202 | # define aesni_cfb_cipher aes_cfb_cipher |
0f113f3e MC |
203 | static int aesni_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
204 | const unsigned char *in, size_t len); | |
d1fff483 | 205 | |
5158c763 | 206 | # define aesni_cfb8_cipher aes_cfb8_cipher |
0f113f3e MC |
207 | static int aesni_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
208 | const unsigned char *in, size_t len); | |
d1fff483 | 209 | |
5158c763 | 210 | # define aesni_cfb1_cipher aes_cfb1_cipher |
0f113f3e MC |
211 | static int aesni_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
212 | const unsigned char *in, size_t len); | |
d1fff483 | 213 | |
5158c763 | 214 | # define aesni_ctr_cipher aes_ctr_cipher |
17f121de | 215 | static int aesni_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 216 | const unsigned char *in, size_t len); |
d1fff483 | 217 | |
17f121de | 218 | static int aesni_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, |
0f113f3e MC |
219 | const unsigned char *iv, int enc) |
220 | { | |
6435f0f6 | 221 | EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,ctx); |
0f113f3e MC |
222 | if (!iv && !key) |
223 | return 1; | |
224 | if (key) { | |
6435f0f6 RL |
225 | aesni_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, |
226 | &gctx->ks.ks); | |
0f113f3e MC |
227 | CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f) aesni_encrypt); |
228 | gctx->ctr = (ctr128_f) aesni_ctr32_encrypt_blocks; | |
229 | /* | |
230 | * If we have an iv can set it directly, otherwise use saved IV. | |
231 | */ | |
232 | if (iv == NULL && gctx->iv_set) | |
233 | iv = gctx->iv; | |
234 | if (iv) { | |
235 | CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); | |
236 | gctx->iv_set = 1; | |
237 | } | |
238 | gctx->key_set = 1; | |
239 | } else { | |
240 | /* If key set use IV, otherwise copy */ | |
241 | if (gctx->key_set) | |
242 | CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); | |
243 | else | |
244 | memcpy(gctx->iv, iv, gctx->ivlen); | |
245 | gctx->iv_set = 1; | |
246 | gctx->iv_gen = 0; | |
247 | } | |
248 | return 1; | |
249 | } | |
250 | ||
5158c763 | 251 | # define aesni_gcm_cipher aes_gcm_cipher |
17f121de | 252 | static int aesni_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 253 | const unsigned char *in, size_t len); |
17f121de AP |
254 | |
255 | static int aesni_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
256 | const unsigned char *iv, int enc) |
257 | { | |
6435f0f6 | 258 | EVP_AES_XTS_CTX *xctx = EVP_C_DATA(EVP_AES_XTS_CTX,ctx); |
2c840201 | 259 | |
0f113f3e MC |
260 | if (!iv && !key) |
261 | return 1; | |
262 | ||
263 | if (key) { | |
3538b0f7 P |
264 | /* The key is two half length keys in reality */ |
265 | const int bytes = EVP_CIPHER_CTX_key_length(ctx) / 2; | |
266 | const int bits = bytes * 8; | |
267 | ||
268 | /* | |
269 | * Verify that the two keys are different. | |
4bd8b240 | 270 | * |
3538b0f7 P |
271 | * This addresses Rogaway's vulnerability. |
272 | * See comment in aes_xts_init_key() below. | |
273 | */ | |
2c840201 P |
274 | if ((!allow_insecure_decrypt || enc) |
275 | && CRYPTO_memcmp(key, key + bytes, bytes) == 0) { | |
3538b0f7 P |
276 | EVPerr(EVP_F_AESNI_XTS_INIT_KEY, EVP_R_XTS_DUPLICATED_KEYS); |
277 | return 0; | |
278 | } | |
279 | ||
0f113f3e MC |
280 | /* key_len is two AES keys */ |
281 | if (enc) { | |
3538b0f7 | 282 | aesni_set_encrypt_key(key, bits, &xctx->ks1.ks); |
0f113f3e MC |
283 | xctx->xts.block1 = (block128_f) aesni_encrypt; |
284 | xctx->stream = aesni_xts_encrypt; | |
285 | } else { | |
3538b0f7 | 286 | aesni_set_decrypt_key(key, bits, &xctx->ks1.ks); |
0f113f3e MC |
287 | xctx->xts.block1 = (block128_f) aesni_decrypt; |
288 | xctx->stream = aesni_xts_decrypt; | |
289 | } | |
290 | ||
3538b0f7 | 291 | aesni_set_encrypt_key(key + bytes, bits, &xctx->ks2.ks); |
0f113f3e MC |
292 | xctx->xts.block2 = (block128_f) aesni_encrypt; |
293 | ||
294 | xctx->xts.key1 = &xctx->ks1; | |
295 | } | |
296 | ||
297 | if (iv) { | |
298 | xctx->xts.key2 = &xctx->ks2; | |
6435f0f6 | 299 | memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 16); |
0f113f3e MC |
300 | } |
301 | ||
302 | return 1; | |
303 | } | |
304 | ||
5158c763 | 305 | # define aesni_xts_cipher aes_xts_cipher |
17f121de | 306 | static int aesni_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 307 | const unsigned char *in, size_t len); |
17f121de AP |
308 | |
309 | static int aesni_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
310 | const unsigned char *iv, int enc) |
311 | { | |
6435f0f6 | 312 | EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,ctx); |
0f113f3e MC |
313 | if (!iv && !key) |
314 | return 1; | |
315 | if (key) { | |
6435f0f6 RL |
316 | aesni_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, |
317 | &cctx->ks.ks); | |
0f113f3e MC |
318 | CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, |
319 | &cctx->ks, (block128_f) aesni_encrypt); | |
320 | cctx->str = enc ? (ccm128_f) aesni_ccm64_encrypt_blocks : | |
321 | (ccm128_f) aesni_ccm64_decrypt_blocks; | |
322 | cctx->key_set = 1; | |
323 | } | |
324 | if (iv) { | |
6435f0f6 | 325 | memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 15 - cctx->L); |
0f113f3e MC |
326 | cctx->iv_set = 1; |
327 | } | |
328 | return 1; | |
329 | } | |
330 | ||
5158c763 | 331 | # define aesni_ccm_cipher aes_ccm_cipher |
17f121de | 332 | static int aesni_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 333 | const unsigned char *in, size_t len); |
17f121de | 334 | |
5158c763 | 335 | # ifndef OPENSSL_NO_OCB |
e6b336ef | 336 | static int aesni_ocb_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, |
0f113f3e MC |
337 | const unsigned char *iv, int enc) |
338 | { | |
6435f0f6 | 339 | EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,ctx); |
0f113f3e MC |
340 | if (!iv && !key) |
341 | return 1; | |
342 | if (key) { | |
343 | do { | |
344 | /* | |
345 | * We set both the encrypt and decrypt key here because decrypt | |
346 | * needs both. We could possibly optimise to remove setting the | |
347 | * decrypt for an encryption operation. | |
348 | */ | |
6435f0f6 RL |
349 | aesni_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, |
350 | &octx->ksenc.ks); | |
351 | aesni_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, | |
352 | &octx->ksdec.ks); | |
bdc985b1 AP |
353 | if (!CRYPTO_ocb128_init(&octx->ocb, |
354 | &octx->ksenc.ks, &octx->ksdec.ks, | |
0f113f3e | 355 | (block128_f) aesni_encrypt, |
bd30091c AP |
356 | (block128_f) aesni_decrypt, |
357 | enc ? aesni_ocb_encrypt | |
358 | : aesni_ocb_decrypt)) | |
0f113f3e MC |
359 | return 0; |
360 | } | |
361 | while (0); | |
362 | ||
363 | /* | |
364 | * If we have an iv we can set it directly, otherwise use saved IV. | |
365 | */ | |
366 | if (iv == NULL && octx->iv_set) | |
367 | iv = octx->iv; | |
368 | if (iv) { | |
369 | if (CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen) | |
370 | != 1) | |
371 | return 0; | |
372 | octx->iv_set = 1; | |
373 | } | |
374 | octx->key_set = 1; | |
375 | } else { | |
376 | /* If key set use IV, otherwise copy */ | |
377 | if (octx->key_set) | |
378 | CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen); | |
379 | else | |
380 | memcpy(octx->iv, iv, octx->ivlen); | |
381 | octx->iv_set = 1; | |
382 | } | |
383 | return 1; | |
384 | } | |
385 | ||
5158c763 | 386 | # define aesni_ocb_cipher aes_ocb_cipher |
e6b336ef | 387 | static int aesni_ocb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 388 | const unsigned char *in, size_t len); |
5158c763 | 389 | # endif /* OPENSSL_NO_OCB */ |
e6b336ef | 390 | |
5158c763 | 391 | # define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \ |
17f121de | 392 | static const EVP_CIPHER aesni_##keylen##_##mode = { \ |
0f113f3e MC |
393 | nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \ |
394 | flags|EVP_CIPH_##MODE##_MODE, \ | |
395 | aesni_init_key, \ | |
396 | aesni_##mode##_cipher, \ | |
397 | NULL, \ | |
398 | sizeof(EVP_AES_KEY), \ | |
399 | NULL,NULL,NULL,NULL }; \ | |
17f121de | 400 | static const EVP_CIPHER aes_##keylen##_##mode = { \ |
0f113f3e MC |
401 | nid##_##keylen##_##nmode,blocksize, \ |
402 | keylen/8,ivlen, \ | |
403 | flags|EVP_CIPH_##MODE##_MODE, \ | |
404 | aes_init_key, \ | |
405 | aes_##mode##_cipher, \ | |
406 | NULL, \ | |
407 | sizeof(EVP_AES_KEY), \ | |
408 | NULL,NULL,NULL,NULL }; \ | |
17f121de | 409 | const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ |
8ca28da0 | 410 | { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; } |
17f121de | 411 | |
5158c763 | 412 | # define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \ |
17f121de | 413 | static const EVP_CIPHER aesni_##keylen##_##mode = { \ |
0f113f3e | 414 | nid##_##keylen##_##mode,blocksize, \ |
b1ceb439 TS |
415 | (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE||EVP_CIPH_##MODE##_MODE==EVP_CIPH_SIV_MODE?2:1)*keylen/8, \ |
416 | ivlen, \ | |
0f113f3e MC |
417 | flags|EVP_CIPH_##MODE##_MODE, \ |
418 | aesni_##mode##_init_key, \ | |
419 | aesni_##mode##_cipher, \ | |
420 | aes_##mode##_cleanup, \ | |
421 | sizeof(EVP_AES_##MODE##_CTX), \ | |
422 | NULL,NULL,aes_##mode##_ctrl,NULL }; \ | |
17f121de | 423 | static const EVP_CIPHER aes_##keylen##_##mode = { \ |
0f113f3e | 424 | nid##_##keylen##_##mode,blocksize, \ |
b1ceb439 TS |
425 | (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE||EVP_CIPH_##MODE##_MODE==EVP_CIPH_SIV_MODE?2:1)*keylen/8, \ |
426 | ivlen, \ | |
0f113f3e MC |
427 | flags|EVP_CIPH_##MODE##_MODE, \ |
428 | aes_##mode##_init_key, \ | |
429 | aes_##mode##_cipher, \ | |
430 | aes_##mode##_cleanup, \ | |
431 | sizeof(EVP_AES_##MODE##_CTX), \ | |
432 | NULL,NULL,aes_##mode##_ctrl,NULL }; \ | |
17f121de | 433 | const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ |
8ca28da0 | 434 | { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; } |
d1fff483 | 435 | |
459b15d4 | 436 | #elif defined(SPARC_AES_CAPABLE) |
c5f6da54 AP |
437 | |
438 | static int aes_t4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
439 | const unsigned char *iv, int enc) |
440 | { | |
441 | int ret, mode, bits; | |
6435f0f6 | 442 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); |
0f113f3e | 443 | |
6435f0f6 RL |
444 | mode = EVP_CIPHER_CTX_mode(ctx); |
445 | bits = EVP_CIPHER_CTX_key_length(ctx) * 8; | |
0f113f3e MC |
446 | if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE) |
447 | && !enc) { | |
448 | ret = 0; | |
6435f0f6 | 449 | aes_t4_set_decrypt_key(key, bits, &dat->ks.ks); |
0f113f3e MC |
450 | dat->block = (block128_f) aes_t4_decrypt; |
451 | switch (bits) { | |
452 | case 128: | |
453 | dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? | |
454 | (cbc128_f) aes128_t4_cbc_decrypt : NULL; | |
455 | break; | |
456 | case 192: | |
457 | dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? | |
458 | (cbc128_f) aes192_t4_cbc_decrypt : NULL; | |
459 | break; | |
460 | case 256: | |
461 | dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? | |
462 | (cbc128_f) aes256_t4_cbc_decrypt : NULL; | |
463 | break; | |
464 | default: | |
465 | ret = -1; | |
466 | } | |
467 | } else { | |
468 | ret = 0; | |
6435f0f6 | 469 | aes_t4_set_encrypt_key(key, bits, &dat->ks.ks); |
0f113f3e MC |
470 | dat->block = (block128_f) aes_t4_encrypt; |
471 | switch (bits) { | |
472 | case 128: | |
473 | if (mode == EVP_CIPH_CBC_MODE) | |
474 | dat->stream.cbc = (cbc128_f) aes128_t4_cbc_encrypt; | |
475 | else if (mode == EVP_CIPH_CTR_MODE) | |
476 | dat->stream.ctr = (ctr128_f) aes128_t4_ctr32_encrypt; | |
477 | else | |
478 | dat->stream.cbc = NULL; | |
479 | break; | |
480 | case 192: | |
481 | if (mode == EVP_CIPH_CBC_MODE) | |
482 | dat->stream.cbc = (cbc128_f) aes192_t4_cbc_encrypt; | |
483 | else if (mode == EVP_CIPH_CTR_MODE) | |
484 | dat->stream.ctr = (ctr128_f) aes192_t4_ctr32_encrypt; | |
485 | else | |
486 | dat->stream.cbc = NULL; | |
487 | break; | |
488 | case 256: | |
489 | if (mode == EVP_CIPH_CBC_MODE) | |
490 | dat->stream.cbc = (cbc128_f) aes256_t4_cbc_encrypt; | |
491 | else if (mode == EVP_CIPH_CTR_MODE) | |
492 | dat->stream.ctr = (ctr128_f) aes256_t4_ctr32_encrypt; | |
493 | else | |
494 | dat->stream.cbc = NULL; | |
495 | break; | |
496 | default: | |
497 | ret = -1; | |
498 | } | |
499 | } | |
500 | ||
501 | if (ret < 0) { | |
502 | EVPerr(EVP_F_AES_T4_INIT_KEY, EVP_R_AES_KEY_SETUP_FAILED); | |
503 | return 0; | |
504 | } | |
505 | ||
506 | return 1; | |
507 | } | |
508 | ||
5158c763 | 509 | # define aes_t4_cbc_cipher aes_cbc_cipher |
0f113f3e MC |
510 | static int aes_t4_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
511 | const unsigned char *in, size_t len); | |
512 | ||
5158c763 | 513 | # define aes_t4_ecb_cipher aes_ecb_cipher |
0f113f3e MC |
514 | static int aes_t4_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
515 | const unsigned char *in, size_t len); | |
516 | ||
5158c763 | 517 | # define aes_t4_ofb_cipher aes_ofb_cipher |
0f113f3e MC |
518 | static int aes_t4_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
519 | const unsigned char *in, size_t len); | |
520 | ||
5158c763 | 521 | # define aes_t4_cfb_cipher aes_cfb_cipher |
0f113f3e MC |
522 | static int aes_t4_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
523 | const unsigned char *in, size_t len); | |
524 | ||
5158c763 | 525 | # define aes_t4_cfb8_cipher aes_cfb8_cipher |
0f113f3e MC |
526 | static int aes_t4_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
527 | const unsigned char *in, size_t len); | |
528 | ||
5158c763 | 529 | # define aes_t4_cfb1_cipher aes_cfb1_cipher |
0f113f3e MC |
530 | static int aes_t4_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
531 | const unsigned char *in, size_t len); | |
532 | ||
5158c763 | 533 | # define aes_t4_ctr_cipher aes_ctr_cipher |
c5f6da54 | 534 | static int aes_t4_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 535 | const unsigned char *in, size_t len); |
c5f6da54 AP |
536 | |
537 | static int aes_t4_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
538 | const unsigned char *iv, int enc) |
539 | { | |
6435f0f6 | 540 | EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,ctx); |
0f113f3e MC |
541 | if (!iv && !key) |
542 | return 1; | |
543 | if (key) { | |
6435f0f6 | 544 | int bits = EVP_CIPHER_CTX_key_length(ctx) * 8; |
0f113f3e MC |
545 | aes_t4_set_encrypt_key(key, bits, &gctx->ks.ks); |
546 | CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, | |
547 | (block128_f) aes_t4_encrypt); | |
548 | switch (bits) { | |
549 | case 128: | |
550 | gctx->ctr = (ctr128_f) aes128_t4_ctr32_encrypt; | |
551 | break; | |
552 | case 192: | |
553 | gctx->ctr = (ctr128_f) aes192_t4_ctr32_encrypt; | |
554 | break; | |
555 | case 256: | |
556 | gctx->ctr = (ctr128_f) aes256_t4_ctr32_encrypt; | |
557 | break; | |
558 | default: | |
559 | return 0; | |
560 | } | |
561 | /* | |
562 | * If we have an iv can set it directly, otherwise use saved IV. | |
563 | */ | |
564 | if (iv == NULL && gctx->iv_set) | |
565 | iv = gctx->iv; | |
566 | if (iv) { | |
567 | CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); | |
568 | gctx->iv_set = 1; | |
569 | } | |
570 | gctx->key_set = 1; | |
571 | } else { | |
572 | /* If key set use IV, otherwise copy */ | |
573 | if (gctx->key_set) | |
574 | CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); | |
575 | else | |
576 | memcpy(gctx->iv, iv, gctx->ivlen); | |
577 | gctx->iv_set = 1; | |
578 | gctx->iv_gen = 0; | |
579 | } | |
580 | return 1; | |
581 | } | |
582 | ||
5158c763 | 583 | # define aes_t4_gcm_cipher aes_gcm_cipher |
c5f6da54 | 584 | static int aes_t4_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 585 | const unsigned char *in, size_t len); |
c5f6da54 AP |
586 | |
587 | static int aes_t4_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
588 | const unsigned char *iv, int enc) |
589 | { | |
6435f0f6 | 590 | EVP_AES_XTS_CTX *xctx = EVP_C_DATA(EVP_AES_XTS_CTX,ctx); |
2c840201 | 591 | |
0f113f3e MC |
592 | if (!iv && !key) |
593 | return 1; | |
594 | ||
595 | if (key) { | |
3538b0f7 P |
596 | /* The key is two half length keys in reality */ |
597 | const int bytes = EVP_CIPHER_CTX_key_length(ctx) / 2; | |
598 | const int bits = bytes * 8; | |
599 | ||
600 | /* | |
601 | * Verify that the two keys are different. | |
4bd8b240 | 602 | * |
3538b0f7 P |
603 | * This addresses Rogaway's vulnerability. |
604 | * See comment in aes_xts_init_key() below. | |
605 | */ | |
2c840201 P |
606 | if ((!allow_insecure_decrypt || enc) |
607 | && CRYPTO_memcmp(key, key + bytes, bytes) == 0) { | |
3538b0f7 P |
608 | EVPerr(EVP_F_AES_T4_XTS_INIT_KEY, EVP_R_XTS_DUPLICATED_KEYS); |
609 | return 0; | |
610 | } | |
611 | ||
0f113f3e MC |
612 | xctx->stream = NULL; |
613 | /* key_len is two AES keys */ | |
614 | if (enc) { | |
615 | aes_t4_set_encrypt_key(key, bits, &xctx->ks1.ks); | |
616 | xctx->xts.block1 = (block128_f) aes_t4_encrypt; | |
617 | switch (bits) { | |
618 | case 128: | |
619 | xctx->stream = aes128_t4_xts_encrypt; | |
620 | break; | |
0f113f3e MC |
621 | case 256: |
622 | xctx->stream = aes256_t4_xts_encrypt; | |
623 | break; | |
624 | default: | |
625 | return 0; | |
626 | } | |
627 | } else { | |
3538b0f7 | 628 | aes_t4_set_decrypt_key(key, bits, &xctx->ks1.ks); |
0f113f3e MC |
629 | xctx->xts.block1 = (block128_f) aes_t4_decrypt; |
630 | switch (bits) { | |
631 | case 128: | |
632 | xctx->stream = aes128_t4_xts_decrypt; | |
633 | break; | |
0f113f3e MC |
634 | case 256: |
635 | xctx->stream = aes256_t4_xts_decrypt; | |
636 | break; | |
637 | default: | |
638 | return 0; | |
639 | } | |
640 | } | |
641 | ||
3538b0f7 | 642 | aes_t4_set_encrypt_key(key + bytes, bits, &xctx->ks2.ks); |
0f113f3e MC |
643 | xctx->xts.block2 = (block128_f) aes_t4_encrypt; |
644 | ||
645 | xctx->xts.key1 = &xctx->ks1; | |
646 | } | |
647 | ||
648 | if (iv) { | |
649 | xctx->xts.key2 = &xctx->ks2; | |
6435f0f6 | 650 | memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 16); |
0f113f3e MC |
651 | } |
652 | ||
653 | return 1; | |
654 | } | |
655 | ||
5158c763 | 656 | # define aes_t4_xts_cipher aes_xts_cipher |
c5f6da54 | 657 | static int aes_t4_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 658 | const unsigned char *in, size_t len); |
c5f6da54 AP |
659 | |
660 | static int aes_t4_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
661 | const unsigned char *iv, int enc) |
662 | { | |
6435f0f6 | 663 | EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,ctx); |
0f113f3e MC |
664 | if (!iv && !key) |
665 | return 1; | |
666 | if (key) { | |
6435f0f6 | 667 | int bits = EVP_CIPHER_CTX_key_length(ctx) * 8; |
0f113f3e MC |
668 | aes_t4_set_encrypt_key(key, bits, &cctx->ks.ks); |
669 | CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, | |
670 | &cctx->ks, (block128_f) aes_t4_encrypt); | |
bdc985b1 | 671 | cctx->str = NULL; |
0f113f3e MC |
672 | cctx->key_set = 1; |
673 | } | |
674 | if (iv) { | |
6435f0f6 | 675 | memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 15 - cctx->L); |
0f113f3e MC |
676 | cctx->iv_set = 1; |
677 | } | |
678 | return 1; | |
679 | } | |
680 | ||
5158c763 | 681 | # define aes_t4_ccm_cipher aes_ccm_cipher |
c5f6da54 | 682 | static int aes_t4_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 683 | const unsigned char *in, size_t len); |
c5f6da54 | 684 | |
5158c763 | 685 | # ifndef OPENSSL_NO_OCB |
e6b336ef | 686 | static int aes_t4_ocb_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, |
0f113f3e MC |
687 | const unsigned char *iv, int enc) |
688 | { | |
6435f0f6 | 689 | EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,ctx); |
0f113f3e MC |
690 | if (!iv && !key) |
691 | return 1; | |
692 | if (key) { | |
693 | do { | |
694 | /* | |
695 | * We set both the encrypt and decrypt key here because decrypt | |
696 | * needs both. We could possibly optimise to remove setting the | |
697 | * decrypt for an encryption operation. | |
698 | */ | |
6435f0f6 RL |
699 | aes_t4_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, |
700 | &octx->ksenc.ks); | |
701 | aes_t4_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, | |
702 | &octx->ksdec.ks); | |
bdc985b1 AP |
703 | if (!CRYPTO_ocb128_init(&octx->ocb, |
704 | &octx->ksenc.ks, &octx->ksdec.ks, | |
0f113f3e | 705 | (block128_f) aes_t4_encrypt, |
02dc0b82 AP |
706 | (block128_f) aes_t4_decrypt, |
707 | NULL)) | |
0f113f3e MC |
708 | return 0; |
709 | } | |
710 | while (0); | |
711 | ||
712 | /* | |
713 | * If we have an iv we can set it directly, otherwise use saved IV. | |
714 | */ | |
715 | if (iv == NULL && octx->iv_set) | |
716 | iv = octx->iv; | |
717 | if (iv) { | |
718 | if (CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen) | |
719 | != 1) | |
720 | return 0; | |
721 | octx->iv_set = 1; | |
722 | } | |
723 | octx->key_set = 1; | |
724 | } else { | |
725 | /* If key set use IV, otherwise copy */ | |
726 | if (octx->key_set) | |
727 | CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen); | |
728 | else | |
729 | memcpy(octx->iv, iv, octx->ivlen); | |
730 | octx->iv_set = 1; | |
731 | } | |
732 | return 1; | |
733 | } | |
734 | ||
5158c763 | 735 | # define aes_t4_ocb_cipher aes_ocb_cipher |
e6b336ef | 736 | static int aes_t4_ocb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 737 | const unsigned char *in, size_t len); |
5158c763 | 738 | # endif /* OPENSSL_NO_OCB */ |
e6b336ef | 739 | |
87d06aed MC |
740 | # ifndef OPENSSL_NO_SIV |
741 | # define aes_t4_siv_init_key aes_siv_init_key | |
742 | # define aes_t4_siv_cipher aes_siv_cipher | |
743 | # endif /* OPENSSL_NO_SIV */ | |
744 | ||
5158c763 | 745 | # define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \ |
c5f6da54 | 746 | static const EVP_CIPHER aes_t4_##keylen##_##mode = { \ |
0f113f3e MC |
747 | nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \ |
748 | flags|EVP_CIPH_##MODE##_MODE, \ | |
749 | aes_t4_init_key, \ | |
750 | aes_t4_##mode##_cipher, \ | |
751 | NULL, \ | |
752 | sizeof(EVP_AES_KEY), \ | |
753 | NULL,NULL,NULL,NULL }; \ | |
c5f6da54 | 754 | static const EVP_CIPHER aes_##keylen##_##mode = { \ |
0f113f3e MC |
755 | nid##_##keylen##_##nmode,blocksize, \ |
756 | keylen/8,ivlen, \ | |
757 | flags|EVP_CIPH_##MODE##_MODE, \ | |
758 | aes_init_key, \ | |
759 | aes_##mode##_cipher, \ | |
760 | NULL, \ | |
761 | sizeof(EVP_AES_KEY), \ | |
762 | NULL,NULL,NULL,NULL }; \ | |
c5f6da54 AP |
763 | const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ |
764 | { return SPARC_AES_CAPABLE?&aes_t4_##keylen##_##mode:&aes_##keylen##_##mode; } | |
765 | ||
5158c763 | 766 | # define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \ |
c5f6da54 | 767 | static const EVP_CIPHER aes_t4_##keylen##_##mode = { \ |
0f113f3e | 768 | nid##_##keylen##_##mode,blocksize, \ |
b1ceb439 TS |
769 | (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE||EVP_CIPH_##MODE##_MODE==EVP_CIPH_SIV_MODE?2:1)*keylen/8, \ |
770 | ivlen, \ | |
0f113f3e MC |
771 | flags|EVP_CIPH_##MODE##_MODE, \ |
772 | aes_t4_##mode##_init_key, \ | |
773 | aes_t4_##mode##_cipher, \ | |
774 | aes_##mode##_cleanup, \ | |
775 | sizeof(EVP_AES_##MODE##_CTX), \ | |
776 | NULL,NULL,aes_##mode##_ctrl,NULL }; \ | |
c5f6da54 | 777 | static const EVP_CIPHER aes_##keylen##_##mode = { \ |
0f113f3e | 778 | nid##_##keylen##_##mode,blocksize, \ |
b1ceb439 TS |
779 | (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE||EVP_CIPH_##MODE##_MODE==EVP_CIPH_SIV_MODE?2:1)*keylen/8, \ |
780 | ivlen, \ | |
0f113f3e MC |
781 | flags|EVP_CIPH_##MODE##_MODE, \ |
782 | aes_##mode##_init_key, \ | |
783 | aes_##mode##_cipher, \ | |
784 | aes_##mode##_cleanup, \ | |
785 | sizeof(EVP_AES_##MODE##_CTX), \ | |
786 | NULL,NULL,aes_##mode##_ctrl,NULL }; \ | |
c5f6da54 AP |
787 | const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ |
788 | { return SPARC_AES_CAPABLE?&aes_t4_##keylen##_##mode:&aes_##keylen##_##mode; } | |
789 | ||
459b15d4 SL |
790 | #elif defined(S390X_aes_128_CAPABLE) |
791 | /* IBM S390X support */ | |
55bd169f PS |
792 | typedef struct { |
793 | union { | |
39147079 | 794 | OSSL_UNION_ALIGN; |
55bd169f PS |
795 | /*- |
796 | * KM-AES parameter block - begin | |
797 | * (see z/Architecture Principles of Operation >= SA22-7832-06) | |
798 | */ | |
799 | struct { | |
800 | unsigned char k[32]; | |
801 | } param; | |
802 | /* KM-AES parameter block - end */ | |
803 | } km; | |
804 | unsigned int fc; | |
805 | } S390X_AES_ECB_CTX; | |
806 | ||
dacd2a87 PS |
807 | typedef struct { |
808 | union { | |
39147079 | 809 | OSSL_UNION_ALIGN; |
dacd2a87 PS |
810 | /*- |
811 | * KMO-AES parameter block - begin | |
812 | * (see z/Architecture Principles of Operation >= SA22-7832-08) | |
813 | */ | |
814 | struct { | |
815 | unsigned char cv[16]; | |
816 | unsigned char k[32]; | |
817 | } param; | |
818 | /* KMO-AES parameter block - end */ | |
819 | } kmo; | |
820 | unsigned int fc; | |
821 | ||
822 | int res; | |
823 | } S390X_AES_OFB_CTX; | |
824 | ||
74d38a86 PS |
825 | typedef struct { |
826 | union { | |
39147079 | 827 | OSSL_UNION_ALIGN; |
74d38a86 PS |
828 | /*- |
829 | * KMF-AES parameter block - begin | |
830 | * (see z/Architecture Principles of Operation >= SA22-7832-08) | |
831 | */ | |
832 | struct { | |
833 | unsigned char cv[16]; | |
834 | unsigned char k[32]; | |
835 | } param; | |
836 | /* KMF-AES parameter block - end */ | |
837 | } kmf; | |
838 | unsigned int fc; | |
839 | ||
840 | int res; | |
841 | } S390X_AES_CFB_CTX; | |
842 | ||
96530eea PS |
843 | typedef struct { |
844 | union { | |
39147079 | 845 | OSSL_UNION_ALIGN; |
96530eea | 846 | /*- |
5d2a6f4b PS |
847 | * KMA-GCM-AES parameter block - begin |
848 | * (see z/Architecture Principles of Operation >= SA22-7832-11) | |
96530eea PS |
849 | */ |
850 | struct { | |
851 | unsigned char reserved[12]; | |
852 | union { | |
853 | unsigned int w; | |
854 | unsigned char b[4]; | |
855 | } cv; | |
856 | union { | |
857 | unsigned long long g[2]; | |
858 | unsigned char b[16]; | |
859 | } t; | |
860 | unsigned char h[16]; | |
861 | unsigned long long taadl; | |
862 | unsigned long long tpcl; | |
863 | union { | |
864 | unsigned long long g[2]; | |
865 | unsigned int w[4]; | |
866 | } j0; | |
867 | unsigned char k[32]; | |
868 | } param; | |
5d2a6f4b | 869 | /* KMA-GCM-AES parameter block - end */ |
96530eea PS |
870 | } kma; |
871 | unsigned int fc; | |
872 | int key_set; | |
873 | ||
874 | unsigned char *iv; | |
875 | int ivlen; | |
876 | int iv_set; | |
877 | int iv_gen; | |
878 | ||
879 | int taglen; | |
880 | ||
881 | unsigned char ares[16]; | |
882 | unsigned char mres[16]; | |
883 | unsigned char kres[16]; | |
884 | int areslen; | |
885 | int mreslen; | |
886 | int kreslen; | |
887 | ||
888 | int tls_aad_len; | |
d6b34570 | 889 | uint64_t tls_enc_records; /* Number of TLS records encrypted */ |
96530eea PS |
890 | } S390X_AES_GCM_CTX; |
891 | ||
39f5b069 PS |
892 | typedef struct { |
893 | union { | |
39147079 | 894 | OSSL_UNION_ALIGN; |
39f5b069 PS |
895 | /*- |
896 | * Padding is chosen so that ccm.kmac_param.k overlaps with key.k and | |
897 | * ccm.fc with key.k.rounds. Remember that on s390x, an AES_KEY's | |
898 | * rounds field is used to store the function code and that the key | |
899 | * schedule is not stored (if aes hardware support is detected). | |
900 | */ | |
901 | struct { | |
902 | unsigned char pad[16]; | |
903 | AES_KEY k; | |
904 | } key; | |
905 | ||
906 | struct { | |
907 | /*- | |
908 | * KMAC-AES parameter block - begin | |
909 | * (see z/Architecture Principles of Operation >= SA22-7832-08) | |
910 | */ | |
911 | struct { | |
912 | union { | |
913 | unsigned long long g[2]; | |
914 | unsigned char b[16]; | |
915 | } icv; | |
916 | unsigned char k[32]; | |
917 | } kmac_param; | |
79c44b4e | 918 | /* KMAC-AES parameter block - end */ |
39f5b069 PS |
919 | |
920 | union { | |
921 | unsigned long long g[2]; | |
922 | unsigned char b[16]; | |
923 | } nonce; | |
924 | union { | |
925 | unsigned long long g[2]; | |
926 | unsigned char b[16]; | |
927 | } buf; | |
928 | ||
929 | unsigned long long blocks; | |
930 | int l; | |
931 | int m; | |
932 | int tls_aad_len; | |
933 | int iv_set; | |
934 | int tag_set; | |
935 | int len_set; | |
936 | int key_set; | |
937 | ||
938 | unsigned char pad[140]; | |
939 | unsigned int fc; | |
940 | } ccm; | |
941 | } aes; | |
942 | } S390X_AES_CCM_CTX; | |
943 | ||
96530eea PS |
944 | # define s390x_aes_init_key aes_init_key |
945 | static int s390x_aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
946 | const unsigned char *iv, int enc); | |
947 | ||
dd6b2706 | 948 | # define S390X_AES_CBC_CTX EVP_AES_KEY |
55bd169f PS |
949 | |
950 | # define s390x_aes_cbc_init_key aes_init_key | |
96530eea PS |
951 | |
952 | # define s390x_aes_cbc_cipher aes_cbc_cipher | |
953 | static int s390x_aes_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
954 | const unsigned char *in, size_t len); | |
955 | ||
55bd169f PS |
956 | static int s390x_aes_ecb_init_key(EVP_CIPHER_CTX *ctx, |
957 | const unsigned char *key, | |
958 | const unsigned char *iv, int enc) | |
959 | { | |
960 | S390X_AES_ECB_CTX *cctx = EVP_C_DATA(S390X_AES_ECB_CTX, ctx); | |
961 | const int keylen = EVP_CIPHER_CTX_key_length(ctx); | |
962 | ||
963 | cctx->fc = S390X_AES_FC(keylen); | |
964 | if (!enc) | |
965 | cctx->fc |= S390X_DECRYPT; | |
966 | ||
967 | memcpy(cctx->km.param.k, key, keylen); | |
968 | return 1; | |
969 | } | |
96530eea | 970 | |
96530eea | 971 | static int s390x_aes_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
55bd169f PS |
972 | const unsigned char *in, size_t len) |
973 | { | |
974 | S390X_AES_ECB_CTX *cctx = EVP_C_DATA(S390X_AES_ECB_CTX, ctx); | |
975 | ||
976 | s390x_km(in, len, out, cctx->fc, &cctx->km.param); | |
977 | return 1; | |
978 | } | |
96530eea | 979 | |
dacd2a87 PS |
980 | static int s390x_aes_ofb_init_key(EVP_CIPHER_CTX *ctx, |
981 | const unsigned char *key, | |
982 | const unsigned char *ivec, int enc) | |
983 | { | |
984 | S390X_AES_OFB_CTX *cctx = EVP_C_DATA(S390X_AES_OFB_CTX, ctx); | |
985 | const unsigned char *iv = EVP_CIPHER_CTX_original_iv(ctx); | |
986 | const int keylen = EVP_CIPHER_CTX_key_length(ctx); | |
987 | const int ivlen = EVP_CIPHER_CTX_iv_length(ctx); | |
55bd169f | 988 | |
dacd2a87 PS |
989 | memcpy(cctx->kmo.param.cv, iv, ivlen); |
990 | memcpy(cctx->kmo.param.k, key, keylen); | |
991 | cctx->fc = S390X_AES_FC(keylen); | |
992 | cctx->res = 0; | |
993 | return 1; | |
994 | } | |
96530eea | 995 | |
96530eea | 996 | static int s390x_aes_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
dacd2a87 PS |
997 | const unsigned char *in, size_t len) |
998 | { | |
999 | S390X_AES_OFB_CTX *cctx = EVP_C_DATA(S390X_AES_OFB_CTX, ctx); | |
1000 | int n = cctx->res; | |
1001 | int rem; | |
1002 | ||
1003 | while (n && len) { | |
1004 | *out = *in ^ cctx->kmo.param.cv[n]; | |
1005 | n = (n + 1) & 0xf; | |
1006 | --len; | |
1007 | ++in; | |
1008 | ++out; | |
1009 | } | |
1010 | ||
1011 | rem = len & 0xf; | |
1012 | ||
1013 | len &= ~(size_t)0xf; | |
1014 | if (len) { | |
1015 | s390x_kmo(in, len, out, cctx->fc, &cctx->kmo.param); | |
1016 | ||
1017 | out += len; | |
1018 | in += len; | |
1019 | } | |
1020 | ||
1021 | if (rem) { | |
1022 | s390x_km(cctx->kmo.param.cv, 16, cctx->kmo.param.cv, cctx->fc, | |
1023 | cctx->kmo.param.k); | |
1024 | ||
1025 | while (rem--) { | |
1026 | out[n] = in[n] ^ cctx->kmo.param.cv[n]; | |
1027 | ++n; | |
1028 | } | |
1029 | } | |
1030 | ||
1031 | cctx->res = n; | |
1032 | return 1; | |
1033 | } | |
96530eea | 1034 | |
74d38a86 PS |
1035 | static int s390x_aes_cfb_init_key(EVP_CIPHER_CTX *ctx, |
1036 | const unsigned char *key, | |
1037 | const unsigned char *ivec, int enc) | |
1038 | { | |
1039 | S390X_AES_CFB_CTX *cctx = EVP_C_DATA(S390X_AES_CFB_CTX, ctx); | |
1040 | const unsigned char *iv = EVP_CIPHER_CTX_original_iv(ctx); | |
1041 | const int keylen = EVP_CIPHER_CTX_key_length(ctx); | |
1042 | const int ivlen = EVP_CIPHER_CTX_iv_length(ctx); | |
1043 | ||
1044 | cctx->fc = S390X_AES_FC(keylen); | |
1045 | cctx->fc |= 16 << 24; /* 16 bytes cipher feedback */ | |
1046 | if (!enc) | |
1047 | cctx->fc |= S390X_DECRYPT; | |
55bd169f | 1048 | |
74d38a86 PS |
1049 | cctx->res = 0; |
1050 | memcpy(cctx->kmf.param.cv, iv, ivlen); | |
1051 | memcpy(cctx->kmf.param.k, key, keylen); | |
1052 | return 1; | |
1053 | } | |
96530eea | 1054 | |
96530eea | 1055 | static int s390x_aes_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
74d38a86 PS |
1056 | const unsigned char *in, size_t len) |
1057 | { | |
1058 | S390X_AES_CFB_CTX *cctx = EVP_C_DATA(S390X_AES_CFB_CTX, ctx); | |
1059 | const int keylen = EVP_CIPHER_CTX_key_length(ctx); | |
1060 | const int enc = EVP_CIPHER_CTX_encrypting(ctx); | |
1061 | int n = cctx->res; | |
1062 | int rem; | |
1063 | unsigned char tmp; | |
1064 | ||
1065 | while (n && len) { | |
1066 | tmp = *in; | |
1067 | *out = cctx->kmf.param.cv[n] ^ tmp; | |
1068 | cctx->kmf.param.cv[n] = enc ? *out : tmp; | |
1069 | n = (n + 1) & 0xf; | |
1070 | --len; | |
1071 | ++in; | |
1072 | ++out; | |
1073 | } | |
1074 | ||
1075 | rem = len & 0xf; | |
1076 | ||
1077 | len &= ~(size_t)0xf; | |
1078 | if (len) { | |
1079 | s390x_kmf(in, len, out, cctx->fc, &cctx->kmf.param); | |
1080 | ||
1081 | out += len; | |
1082 | in += len; | |
1083 | } | |
1084 | ||
1085 | if (rem) { | |
1086 | s390x_km(cctx->kmf.param.cv, 16, cctx->kmf.param.cv, | |
1087 | S390X_AES_FC(keylen), cctx->kmf.param.k); | |
1088 | ||
1089 | while (rem--) { | |
1090 | tmp = in[n]; | |
1091 | out[n] = cctx->kmf.param.cv[n] ^ tmp; | |
1092 | cctx->kmf.param.cv[n] = enc ? out[n] : tmp; | |
1093 | ++n; | |
1094 | } | |
1095 | } | |
96530eea | 1096 | |
74d38a86 PS |
1097 | cctx->res = n; |
1098 | return 1; | |
1099 | } | |
1100 | ||
74d38a86 PS |
1101 | static int s390x_aes_cfb8_init_key(EVP_CIPHER_CTX *ctx, |
1102 | const unsigned char *key, | |
1103 | const unsigned char *ivec, int enc) | |
1104 | { | |
1105 | S390X_AES_CFB_CTX *cctx = EVP_C_DATA(S390X_AES_CFB_CTX, ctx); | |
1106 | const unsigned char *iv = EVP_CIPHER_CTX_original_iv(ctx); | |
1107 | const int keylen = EVP_CIPHER_CTX_key_length(ctx); | |
1108 | const int ivlen = EVP_CIPHER_CTX_iv_length(ctx); | |
1109 | ||
1110 | cctx->fc = S390X_AES_FC(keylen); | |
1111 | cctx->fc |= 1 << 24; /* 1 byte cipher feedback */ | |
1112 | if (!enc) | |
1113 | cctx->fc |= S390X_DECRYPT; | |
96530eea | 1114 | |
74d38a86 PS |
1115 | memcpy(cctx->kmf.param.cv, iv, ivlen); |
1116 | memcpy(cctx->kmf.param.k, key, keylen); | |
1117 | return 1; | |
1118 | } | |
55bd169f | 1119 | |
96530eea | 1120 | static int s390x_aes_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
74d38a86 PS |
1121 | const unsigned char *in, size_t len) |
1122 | { | |
1123 | S390X_AES_CFB_CTX *cctx = EVP_C_DATA(S390X_AES_CFB_CTX, ctx); | |
1124 | ||
1125 | s390x_kmf(in, len, out, cctx->fc, &cctx->kmf.param); | |
1126 | return 1; | |
1127 | } | |
96530eea | 1128 | |
55bd169f PS |
1129 | # define s390x_aes_cfb1_init_key aes_init_key |
1130 | ||
96530eea PS |
1131 | # define s390x_aes_cfb1_cipher aes_cfb1_cipher |
1132 | static int s390x_aes_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
1133 | const unsigned char *in, size_t len); | |
1134 | ||
dd6b2706 | 1135 | # define S390X_AES_CTR_CTX EVP_AES_KEY |
55bd169f PS |
1136 | |
1137 | # define s390x_aes_ctr_init_key aes_init_key | |
96530eea PS |
1138 | |
1139 | # define s390x_aes_ctr_cipher aes_ctr_cipher | |
1140 | static int s390x_aes_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
1141 | const unsigned char *in, size_t len); | |
1142 | ||
bcf082d1 | 1143 | /* iv + padding length for iv lengths != 12 */ |
dd6b2706 | 1144 | # define S390X_gcm_ivpadlen(i) ((((i) + 15) >> 4 << 4) + 16) |
96530eea | 1145 | |
5d2a6f4b PS |
1146 | /*- |
1147 | * Process additional authenticated data. Returns 0 on success. Code is | |
1148 | * big-endian. | |
1149 | */ | |
96530eea PS |
1150 | static int s390x_aes_gcm_aad(S390X_AES_GCM_CTX *ctx, const unsigned char *aad, |
1151 | size_t len) | |
1152 | { | |
1153 | unsigned long long alen; | |
1154 | int n, rem; | |
1155 | ||
1156 | if (ctx->kma.param.tpcl) | |
1157 | return -2; | |
1158 | ||
1159 | alen = ctx->kma.param.taadl + len; | |
1160 | if (alen > (U64(1) << 61) || (sizeof(len) == 8 && alen < len)) | |
1161 | return -1; | |
1162 | ctx->kma.param.taadl = alen; | |
1163 | ||
1164 | n = ctx->areslen; | |
1165 | if (n) { | |
1166 | while (n && len) { | |
1167 | ctx->ares[n] = *aad; | |
1168 | n = (n + 1) & 0xf; | |
1169 | ++aad; | |
1170 | --len; | |
1171 | } | |
1172 | /* ctx->ares contains a complete block if offset has wrapped around */ | |
1173 | if (!n) { | |
1174 | s390x_kma(ctx->ares, 16, NULL, 0, NULL, ctx->fc, &ctx->kma.param); | |
1175 | ctx->fc |= S390X_KMA_HS; | |
1176 | } | |
1177 | ctx->areslen = n; | |
1178 | } | |
1179 | ||
1180 | rem = len & 0xf; | |
1181 | ||
25868993 | 1182 | len &= ~(size_t)0xf; |
96530eea PS |
1183 | if (len) { |
1184 | s390x_kma(aad, len, NULL, 0, NULL, ctx->fc, &ctx->kma.param); | |
1185 | aad += len; | |
1186 | ctx->fc |= S390X_KMA_HS; | |
1187 | } | |
1188 | ||
1189 | if (rem) { | |
1190 | ctx->areslen = rem; | |
1191 | ||
1192 | do { | |
1193 | --rem; | |
1194 | ctx->ares[rem] = aad[rem]; | |
1195 | } while (rem); | |
1196 | } | |
1197 | return 0; | |
1198 | } | |
1199 | ||
5d2a6f4b PS |
1200 | /*- |
1201 | * En/de-crypt plain/cipher-text and authenticate ciphertext. Returns 0 for | |
1202 | * success. Code is big-endian. | |
1203 | */ | |
96530eea PS |
1204 | static int s390x_aes_gcm(S390X_AES_GCM_CTX *ctx, const unsigned char *in, |
1205 | unsigned char *out, size_t len) | |
1206 | { | |
1207 | const unsigned char *inptr; | |
1208 | unsigned long long mlen; | |
1209 | union { | |
1210 | unsigned int w[4]; | |
1211 | unsigned char b[16]; | |
1212 | } buf; | |
1213 | size_t inlen; | |
1214 | int n, rem, i; | |
1215 | ||
1216 | mlen = ctx->kma.param.tpcl + len; | |
1217 | if (mlen > ((U64(1) << 36) - 32) || (sizeof(len) == 8 && mlen < len)) | |
1218 | return -1; | |
1219 | ctx->kma.param.tpcl = mlen; | |
1220 | ||
1221 | n = ctx->mreslen; | |
1222 | if (n) { | |
1223 | inptr = in; | |
1224 | inlen = len; | |
1225 | while (n && inlen) { | |
1226 | ctx->mres[n] = *inptr; | |
1227 | n = (n + 1) & 0xf; | |
1228 | ++inptr; | |
1229 | --inlen; | |
1230 | } | |
1231 | /* ctx->mres contains a complete block if offset has wrapped around */ | |
1232 | if (!n) { | |
1233 | s390x_kma(ctx->ares, ctx->areslen, ctx->mres, 16, buf.b, | |
1234 | ctx->fc | S390X_KMA_LAAD, &ctx->kma.param); | |
1235 | ctx->fc |= S390X_KMA_HS; | |
1236 | ctx->areslen = 0; | |
1237 | ||
1238 | /* previous call already encrypted/decrypted its remainder, | |
1239 | * see comment below */ | |
1240 | n = ctx->mreslen; | |
1241 | while (n) { | |
1242 | *out = buf.b[n]; | |
1243 | n = (n + 1) & 0xf; | |
1244 | ++out; | |
1245 | ++in; | |
1246 | --len; | |
1247 | } | |
1248 | ctx->mreslen = 0; | |
1249 | } | |
1250 | } | |
1251 | ||
1252 | rem = len & 0xf; | |
1253 | ||
25868993 | 1254 | len &= ~(size_t)0xf; |
96530eea PS |
1255 | if (len) { |
1256 | s390x_kma(ctx->ares, ctx->areslen, in, len, out, | |
1257 | ctx->fc | S390X_KMA_LAAD, &ctx->kma.param); | |
1258 | in += len; | |
1259 | out += len; | |
1260 | ctx->fc |= S390X_KMA_HS; | |
1261 | ctx->areslen = 0; | |
1262 | } | |
1263 | ||
1264 | /*- | |
1265 | * If there is a remainder, it has to be saved such that it can be | |
1266 | * processed by kma later. However, we also have to do the for-now | |
1267 | * unauthenticated encryption/decryption part here and now... | |
1268 | */ | |
1269 | if (rem) { | |
1270 | if (!ctx->mreslen) { | |
1271 | buf.w[0] = ctx->kma.param.j0.w[0]; | |
1272 | buf.w[1] = ctx->kma.param.j0.w[1]; | |
1273 | buf.w[2] = ctx->kma.param.j0.w[2]; | |
1274 | buf.w[3] = ctx->kma.param.cv.w + 1; | |
1275 | s390x_km(buf.b, 16, ctx->kres, ctx->fc & 0x1f, &ctx->kma.param.k); | |
1276 | } | |
1277 | ||
1278 | n = ctx->mreslen; | |
1279 | for (i = 0; i < rem; i++) { | |
1280 | ctx->mres[n + i] = in[i]; | |
1281 | out[i] = in[i] ^ ctx->kres[n + i]; | |
1282 | } | |
1283 | ||
1284 | ctx->mreslen += rem; | |
1285 | } | |
1286 | return 0; | |
1287 | } | |
1288 | ||
5d2a6f4b PS |
1289 | /*- |
1290 | * Initialize context structure. Code is big-endian. | |
1291 | */ | |
96530eea PS |
1292 | static void s390x_aes_gcm_setiv(S390X_AES_GCM_CTX *ctx, |
1293 | const unsigned char *iv) | |
1294 | { | |
1295 | ctx->kma.param.t.g[0] = 0; | |
1296 | ctx->kma.param.t.g[1] = 0; | |
1297 | ctx->kma.param.tpcl = 0; | |
1298 | ctx->kma.param.taadl = 0; | |
1299 | ctx->mreslen = 0; | |
1300 | ctx->areslen = 0; | |
1301 | ctx->kreslen = 0; | |
1302 | ||
1303 | if (ctx->ivlen == 12) { | |
1304 | memcpy(&ctx->kma.param.j0, iv, ctx->ivlen); | |
1305 | ctx->kma.param.j0.w[3] = 1; | |
1306 | ctx->kma.param.cv.w = 1; | |
1307 | } else { | |
1308 | /* ctx->iv has the right size and is already padded. */ | |
1309 | memcpy(ctx->iv, iv, ctx->ivlen); | |
1310 | s390x_kma(ctx->iv, S390X_gcm_ivpadlen(ctx->ivlen), NULL, 0, NULL, | |
1311 | ctx->fc, &ctx->kma.param); | |
1312 | ctx->fc |= S390X_KMA_HS; | |
1313 | ||
1314 | ctx->kma.param.j0.g[0] = ctx->kma.param.t.g[0]; | |
1315 | ctx->kma.param.j0.g[1] = ctx->kma.param.t.g[1]; | |
1316 | ctx->kma.param.cv.w = ctx->kma.param.j0.w[3]; | |
1317 | ctx->kma.param.t.g[0] = 0; | |
1318 | ctx->kma.param.t.g[1] = 0; | |
1319 | } | |
1320 | } | |
1321 | ||
5d2a6f4b PS |
1322 | /*- |
1323 | * Performs various operations on the context structure depending on control | |
1324 | * type. Returns 1 for success, 0 for failure and -1 for unknown control type. | |
1325 | * Code is big-endian. | |
1326 | */ | |
96530eea PS |
1327 | static int s390x_aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) |
1328 | { | |
1329 | S390X_AES_GCM_CTX *gctx = EVP_C_DATA(S390X_AES_GCM_CTX, c); | |
1330 | S390X_AES_GCM_CTX *gctx_out; | |
1331 | EVP_CIPHER_CTX *out; | |
1332 | unsigned char *buf, *iv; | |
1333 | int ivlen, enc, len; | |
1334 | ||
1335 | switch (type) { | |
1336 | case EVP_CTRL_INIT: | |
7dddf2fc | 1337 | ivlen = EVP_CIPHER_iv_length(c->cipher); |
96530eea PS |
1338 | iv = EVP_CIPHER_CTX_iv_noconst(c); |
1339 | gctx->key_set = 0; | |
1340 | gctx->iv_set = 0; | |
1341 | gctx->ivlen = ivlen; | |
1342 | gctx->iv = iv; | |
1343 | gctx->taglen = -1; | |
1344 | gctx->iv_gen = 0; | |
1345 | gctx->tls_aad_len = -1; | |
1346 | return 1; | |
1347 | ||
7dddf2fc SL |
1348 | case EVP_CTRL_GET_IVLEN: |
1349 | *(int *)ptr = gctx->ivlen; | |
1350 | return 1; | |
1351 | ||
96530eea PS |
1352 | case EVP_CTRL_AEAD_SET_IVLEN: |
1353 | if (arg <= 0) | |
1354 | return 0; | |
1355 | ||
1356 | if (arg != 12) { | |
1357 | iv = EVP_CIPHER_CTX_iv_noconst(c); | |
1358 | len = S390X_gcm_ivpadlen(arg); | |
1359 | ||
1360 | /* Allocate memory for iv if needed. */ | |
1361 | if (gctx->ivlen == 12 || len > S390X_gcm_ivpadlen(gctx->ivlen)) { | |
1362 | if (gctx->iv != iv) | |
1363 | OPENSSL_free(gctx->iv); | |
1364 | ||
cdb10bae RS |
1365 | if ((gctx->iv = OPENSSL_malloc(len)) == NULL) { |
1366 | EVPerr(EVP_F_S390X_AES_GCM_CTRL, ERR_R_MALLOC_FAILURE); | |
96530eea | 1367 | return 0; |
cdb10bae | 1368 | } |
96530eea PS |
1369 | } |
1370 | /* Add padding. */ | |
1371 | memset(gctx->iv + arg, 0, len - arg - 8); | |
1372 | *((unsigned long long *)(gctx->iv + len - 8)) = arg << 3; | |
1373 | } | |
1374 | gctx->ivlen = arg; | |
1375 | return 1; | |
1376 | ||
1377 | case EVP_CTRL_AEAD_SET_TAG: | |
1378 | buf = EVP_CIPHER_CTX_buf_noconst(c); | |
1379 | enc = EVP_CIPHER_CTX_encrypting(c); | |
1380 | if (arg <= 0 || arg > 16 || enc) | |
1381 | return 0; | |
1382 | ||
1383 | memcpy(buf, ptr, arg); | |
1384 | gctx->taglen = arg; | |
1385 | return 1; | |
1386 | ||
1387 | case EVP_CTRL_AEAD_GET_TAG: | |
1388 | enc = EVP_CIPHER_CTX_encrypting(c); | |
1389 | if (arg <= 0 || arg > 16 || !enc || gctx->taglen < 0) | |
1390 | return 0; | |
1391 | ||
1392 | memcpy(ptr, gctx->kma.param.t.b, arg); | |
1393 | return 1; | |
1394 | ||
1395 | case EVP_CTRL_GCM_SET_IV_FIXED: | |
1396 | /* Special case: -1 length restores whole iv */ | |
1397 | if (arg == -1) { | |
1398 | memcpy(gctx->iv, ptr, gctx->ivlen); | |
1399 | gctx->iv_gen = 1; | |
1400 | return 1; | |
1401 | } | |
1402 | /* | |
1403 | * Fixed field must be at least 4 bytes and invocation field at least | |
1404 | * 8. | |
1405 | */ | |
1406 | if ((arg < 4) || (gctx->ivlen - arg) < 8) | |
1407 | return 0; | |
1408 | ||
1409 | if (arg) | |
1410 | memcpy(gctx->iv, ptr, arg); | |
1411 | ||
1412 | enc = EVP_CIPHER_CTX_encrypting(c); | |
16cfc2c9 KR |
1413 | if (enc && RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0) |
1414 | return 0; | |
96530eea PS |
1415 | |
1416 | gctx->iv_gen = 1; | |
1417 | return 1; | |
1418 | ||
1419 | case EVP_CTRL_GCM_IV_GEN: | |
1420 | if (gctx->iv_gen == 0 || gctx->key_set == 0) | |
1421 | return 0; | |
1422 | ||
1423 | s390x_aes_gcm_setiv(gctx, gctx->iv); | |
1424 | ||
1425 | if (arg <= 0 || arg > gctx->ivlen) | |
1426 | arg = gctx->ivlen; | |
1427 | ||
1428 | memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg); | |
1429 | /* | |
1430 | * Invocation field will be at least 8 bytes in size and so no need | |
1431 | * to check wrap around or increment more than last 8 bytes. | |
1432 | */ | |
03a5e5ae | 1433 | ctr64_inc(gctx->iv + gctx->ivlen - 8); |
96530eea PS |
1434 | gctx->iv_set = 1; |
1435 | return 1; | |
1436 | ||
1437 | case EVP_CTRL_GCM_SET_IV_INV: | |
1438 | enc = EVP_CIPHER_CTX_encrypting(c); | |
1439 | if (gctx->iv_gen == 0 || gctx->key_set == 0 || enc) | |
1440 | return 0; | |
1441 | ||
1442 | memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg); | |
1443 | s390x_aes_gcm_setiv(gctx, gctx->iv); | |
1444 | gctx->iv_set = 1; | |
1445 | return 1; | |
1446 | ||
1447 | case EVP_CTRL_AEAD_TLS1_AAD: | |
1448 | /* Save the aad for later use. */ | |
1449 | if (arg != EVP_AEAD_TLS1_AAD_LEN) | |
1450 | return 0; | |
1451 | ||
1452 | buf = EVP_CIPHER_CTX_buf_noconst(c); | |
1453 | memcpy(buf, ptr, arg); | |
1454 | gctx->tls_aad_len = arg; | |
d6b34570 | 1455 | gctx->tls_enc_records = 0; |
96530eea PS |
1456 | |
1457 | len = buf[arg - 2] << 8 | buf[arg - 1]; | |
1458 | /* Correct length for explicit iv. */ | |
1459 | if (len < EVP_GCM_TLS_EXPLICIT_IV_LEN) | |
1460 | return 0; | |
1461 | len -= EVP_GCM_TLS_EXPLICIT_IV_LEN; | |
1462 | ||
1463 | /* If decrypting correct for tag too. */ | |
1464 | enc = EVP_CIPHER_CTX_encrypting(c); | |
1465 | if (!enc) { | |
1466 | if (len < EVP_GCM_TLS_TAG_LEN) | |
1467 | return 0; | |
1468 | len -= EVP_GCM_TLS_TAG_LEN; | |
1469 | } | |
1470 | buf[arg - 2] = len >> 8; | |
1471 | buf[arg - 1] = len & 0xff; | |
1472 | /* Extra padding: tag appended to record. */ | |
1473 | return EVP_GCM_TLS_TAG_LEN; | |
1474 | ||
1475 | case EVP_CTRL_COPY: | |
1476 | out = ptr; | |
1477 | gctx_out = EVP_C_DATA(S390X_AES_GCM_CTX, out); | |
1478 | iv = EVP_CIPHER_CTX_iv_noconst(c); | |
1479 | ||
1480 | if (gctx->iv == iv) { | |
1481 | gctx_out->iv = EVP_CIPHER_CTX_iv_noconst(out); | |
1482 | } else { | |
1483 | len = S390X_gcm_ivpadlen(gctx->ivlen); | |
1484 | ||
cdb10bae RS |
1485 | if ((gctx_out->iv = OPENSSL_malloc(len)) == NULL) { |
1486 | EVPerr(EVP_F_S390X_AES_GCM_CTRL, ERR_R_MALLOC_FAILURE); | |
96530eea | 1487 | return 0; |
cdb10bae | 1488 | } |
96530eea PS |
1489 | |
1490 | memcpy(gctx_out->iv, gctx->iv, len); | |
1491 | } | |
1492 | return 1; | |
1493 | ||
1494 | default: | |
1495 | return -1; | |
1496 | } | |
1497 | } | |
1498 | ||
5d2a6f4b PS |
1499 | /*- |
1500 | * Set key and/or iv. Returns 1 on success. Otherwise 0 is returned. | |
1501 | */ | |
96530eea PS |
1502 | static int s390x_aes_gcm_init_key(EVP_CIPHER_CTX *ctx, |
1503 | const unsigned char *key, | |
1504 | const unsigned char *iv, int enc) | |
1505 | { | |
1506 | S390X_AES_GCM_CTX *gctx = EVP_C_DATA(S390X_AES_GCM_CTX, ctx); | |
1507 | int keylen; | |
1508 | ||
1509 | if (iv == NULL && key == NULL) | |
1510 | return 1; | |
1511 | ||
1512 | if (key != NULL) { | |
1513 | keylen = EVP_CIPHER_CTX_key_length(ctx); | |
1514 | memcpy(&gctx->kma.param.k, key, keylen); | |
1515 | ||
8eb399fb | 1516 | gctx->fc = S390X_AES_FC(keylen); |
96530eea PS |
1517 | if (!enc) |
1518 | gctx->fc |= S390X_DECRYPT; | |
1519 | ||
1520 | if (iv == NULL && gctx->iv_set) | |
1521 | iv = gctx->iv; | |
1522 | ||
1523 | if (iv != NULL) { | |
1524 | s390x_aes_gcm_setiv(gctx, iv); | |
1525 | gctx->iv_set = 1; | |
1526 | } | |
1527 | gctx->key_set = 1; | |
1528 | } else { | |
1529 | if (gctx->key_set) | |
1530 | s390x_aes_gcm_setiv(gctx, iv); | |
1531 | else | |
1532 | memcpy(gctx->iv, iv, gctx->ivlen); | |
1533 | ||
1534 | gctx->iv_set = 1; | |
1535 | gctx->iv_gen = 0; | |
1536 | } | |
1537 | return 1; | |
1538 | } | |
1539 | ||
5d2a6f4b PS |
1540 | /*- |
1541 | * En/de-crypt and authenticate TLS packet. Returns the number of bytes written | |
1542 | * if successful. Otherwise -1 is returned. Code is big-endian. | |
1543 | */ | |
96530eea PS |
1544 | static int s390x_aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
1545 | const unsigned char *in, size_t len) | |
1546 | { | |
1547 | S390X_AES_GCM_CTX *gctx = EVP_C_DATA(S390X_AES_GCM_CTX, ctx); | |
1548 | const unsigned char *buf = EVP_CIPHER_CTX_buf_noconst(ctx); | |
1549 | const int enc = EVP_CIPHER_CTX_encrypting(ctx); | |
1550 | int rv = -1; | |
1551 | ||
1552 | if (out != in || len < (EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN)) | |
1553 | return -1; | |
1554 | ||
d6b34570 P |
1555 | /* |
1556 | * Check for too many keys as per FIPS 140-2 IG A.5 "Key/IV Pair Uniqueness | |
1557 | * Requirements from SP 800-38D". The requirements is for one party to the | |
1558 | * communication to fail after 2^64 - 1 keys. We do this on the encrypting | |
1559 | * side only. | |
1560 | */ | |
1561 | if (ctx->encrypt && ++gctx->tls_enc_records == 0) { | |
1562 | EVPerr(EVP_F_S390X_AES_GCM_TLS_CIPHER, EVP_R_TOO_MANY_RECORDS); | |
1563 | goto err; | |
1564 | } | |
1565 | ||
96530eea PS |
1566 | if (EVP_CIPHER_CTX_ctrl(ctx, enc ? EVP_CTRL_GCM_IV_GEN |
1567 | : EVP_CTRL_GCM_SET_IV_INV, | |
1568 | EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0) | |
1569 | goto err; | |
1570 | ||
1571 | in += EVP_GCM_TLS_EXPLICIT_IV_LEN; | |
1572 | out += EVP_GCM_TLS_EXPLICIT_IV_LEN; | |
1573 | len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN; | |
1574 | ||
1575 | gctx->kma.param.taadl = gctx->tls_aad_len << 3; | |
1576 | gctx->kma.param.tpcl = len << 3; | |
1577 | s390x_kma(buf, gctx->tls_aad_len, in, len, out, | |
1578 | gctx->fc | S390X_KMA_LAAD | S390X_KMA_LPC, &gctx->kma.param); | |
1579 | ||
1580 | if (enc) { | |
1581 | memcpy(out + len, gctx->kma.param.t.b, EVP_GCM_TLS_TAG_LEN); | |
1582 | rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN; | |
1583 | } else { | |
1584 | if (CRYPTO_memcmp(gctx->kma.param.t.b, in + len, | |
1585 | EVP_GCM_TLS_TAG_LEN)) { | |
1586 | OPENSSL_cleanse(out, len); | |
1587 | goto err; | |
1588 | } | |
1589 | rv = len; | |
1590 | } | |
1591 | err: | |
1592 | gctx->iv_set = 0; | |
1593 | gctx->tls_aad_len = -1; | |
1594 | return rv; | |
1595 | } | |
1596 | ||
5d2a6f4b PS |
1597 | /*- |
1598 | * Called from EVP layer to initialize context, process additional | |
1599 | * authenticated data, en/de-crypt plain/cipher-text and authenticate | |
1600 | * ciphertext or process a TLS packet, depending on context. Returns bytes | |
1601 | * written on success. Otherwise -1 is returned. Code is big-endian. | |
1602 | */ | |
96530eea PS |
1603 | static int s390x_aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
1604 | const unsigned char *in, size_t len) | |
1605 | { | |
1606 | S390X_AES_GCM_CTX *gctx = EVP_C_DATA(S390X_AES_GCM_CTX, ctx); | |
1607 | unsigned char *buf, tmp[16]; | |
1608 | int enc; | |
1609 | ||
1610 | if (!gctx->key_set) | |
1611 | return -1; | |
1612 | ||
1613 | if (gctx->tls_aad_len >= 0) | |
1614 | return s390x_aes_gcm_tls_cipher(ctx, out, in, len); | |
1615 | ||
1616 | if (!gctx->iv_set) | |
1617 | return -1; | |
1618 | ||
1619 | if (in != NULL) { | |
1620 | if (out == NULL) { | |
1621 | if (s390x_aes_gcm_aad(gctx, in, len)) | |
1622 | return -1; | |
1623 | } else { | |
1624 | if (s390x_aes_gcm(gctx, in, out, len)) | |
1625 | return -1; | |
1626 | } | |
1627 | return len; | |
1628 | } else { | |
1629 | gctx->kma.param.taadl <<= 3; | |
1630 | gctx->kma.param.tpcl <<= 3; | |
1631 | s390x_kma(gctx->ares, gctx->areslen, gctx->mres, gctx->mreslen, tmp, | |
1632 | gctx->fc | S390X_KMA_LAAD | S390X_KMA_LPC, &gctx->kma.param); | |
1633 | /* recall that we already did en-/decrypt gctx->mres | |
1634 | * and returned it to caller... */ | |
1635 | OPENSSL_cleanse(tmp, gctx->mreslen); | |
1636 | gctx->iv_set = 0; | |
1637 | ||
1638 | enc = EVP_CIPHER_CTX_encrypting(ctx); | |
1639 | if (enc) { | |
1640 | gctx->taglen = 16; | |
1641 | } else { | |
1642 | if (gctx->taglen < 0) | |
1643 | return -1; | |
1644 | ||
1645 | buf = EVP_CIPHER_CTX_buf_noconst(ctx); | |
1646 | if (CRYPTO_memcmp(buf, gctx->kma.param.t.b, gctx->taglen)) | |
1647 | return -1; | |
1648 | } | |
1649 | return 0; | |
1650 | } | |
1651 | } | |
1652 | ||
1653 | static int s390x_aes_gcm_cleanup(EVP_CIPHER_CTX *c) | |
1654 | { | |
1655 | S390X_AES_GCM_CTX *gctx = EVP_C_DATA(S390X_AES_GCM_CTX, c); | |
1656 | const unsigned char *iv; | |
1657 | ||
1658 | if (gctx == NULL) | |
1659 | return 0; | |
1660 | ||
1661 | iv = EVP_CIPHER_CTX_iv(c); | |
1662 | if (iv != gctx->iv) | |
1663 | OPENSSL_free(gctx->iv); | |
1664 | ||
1665 | OPENSSL_cleanse(gctx, sizeof(*gctx)); | |
1666 | return 1; | |
1667 | } | |
1668 | ||
dd6b2706 | 1669 | # define S390X_AES_XTS_CTX EVP_AES_XTS_CTX |
96530eea PS |
1670 | |
1671 | # define s390x_aes_xts_init_key aes_xts_init_key | |
1672 | static int s390x_aes_xts_init_key(EVP_CIPHER_CTX *ctx, | |
1673 | const unsigned char *key, | |
1674 | const unsigned char *iv, int enc); | |
1675 | # define s390x_aes_xts_cipher aes_xts_cipher | |
1676 | static int s390x_aes_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
1677 | const unsigned char *in, size_t len); | |
1678 | # define s390x_aes_xts_ctrl aes_xts_ctrl | |
1679 | static int s390x_aes_xts_ctrl(EVP_CIPHER_CTX *, int type, int arg, void *ptr); | |
1680 | # define s390x_aes_xts_cleanup aes_xts_cleanup | |
1681 | ||
39f5b069 PS |
1682 | /*- |
1683 | * Set nonce and length fields. Code is big-endian. | |
1684 | */ | |
1685 | static inline void s390x_aes_ccm_setiv(S390X_AES_CCM_CTX *ctx, | |
1686 | const unsigned char *nonce, | |
1687 | size_t mlen) | |
1688 | { | |
1689 | ctx->aes.ccm.nonce.b[0] &= ~S390X_CCM_AAD_FLAG; | |
1690 | ctx->aes.ccm.nonce.g[1] = mlen; | |
1691 | memcpy(ctx->aes.ccm.nonce.b + 1, nonce, 15 - ctx->aes.ccm.l); | |
1692 | } | |
1693 | ||
1694 | /*- | |
1695 | * Process additional authenticated data. Code is big-endian. | |
1696 | */ | |
1697 | static void s390x_aes_ccm_aad(S390X_AES_CCM_CTX *ctx, const unsigned char *aad, | |
1698 | size_t alen) | |
1699 | { | |
1700 | unsigned char *ptr; | |
1701 | int i, rem; | |
1702 | ||
1703 | if (!alen) | |
1704 | return; | |
1705 | ||
1706 | ctx->aes.ccm.nonce.b[0] |= S390X_CCM_AAD_FLAG; | |
1707 | ||
1708 | /* Suppress 'type-punned pointer dereference' warning. */ | |
1709 | ptr = ctx->aes.ccm.buf.b; | |
1710 | ||
1711 | if (alen < ((1 << 16) - (1 << 8))) { | |
1712 | *(uint16_t *)ptr = alen; | |
1713 | i = 2; | |
1714 | } else if (sizeof(alen) == 8 | |
1715 | && alen >= (size_t)1 << (32 % (sizeof(alen) * 8))) { | |
1716 | *(uint16_t *)ptr = 0xffff; | |
1717 | *(uint64_t *)(ptr + 2) = alen; | |
1718 | i = 10; | |
1719 | } else { | |
1720 | *(uint16_t *)ptr = 0xfffe; | |
1721 | *(uint32_t *)(ptr + 2) = alen; | |
1722 | i = 6; | |
1723 | } | |
1724 | ||
1725 | while (i < 16 && alen) { | |
1726 | ctx->aes.ccm.buf.b[i] = *aad; | |
1727 | ++aad; | |
1728 | --alen; | |
1729 | ++i; | |
1730 | } | |
1731 | while (i < 16) { | |
1732 | ctx->aes.ccm.buf.b[i] = 0; | |
1733 | ++i; | |
1734 | } | |
1735 | ||
1736 | ctx->aes.ccm.kmac_param.icv.g[0] = 0; | |
1737 | ctx->aes.ccm.kmac_param.icv.g[1] = 0; | |
1738 | s390x_kmac(ctx->aes.ccm.nonce.b, 32, ctx->aes.ccm.fc, | |
1739 | &ctx->aes.ccm.kmac_param); | |
1740 | ctx->aes.ccm.blocks += 2; | |
1741 | ||
1742 | rem = alen & 0xf; | |
25868993 | 1743 | alen &= ~(size_t)0xf; |
39f5b069 PS |
1744 | if (alen) { |
1745 | s390x_kmac(aad, alen, ctx->aes.ccm.fc, &ctx->aes.ccm.kmac_param); | |
1746 | ctx->aes.ccm.blocks += alen >> 4; | |
1747 | aad += alen; | |
1748 | } | |
1749 | if (rem) { | |
1750 | for (i = 0; i < rem; i++) | |
1751 | ctx->aes.ccm.kmac_param.icv.b[i] ^= aad[i]; | |
1752 | ||
1753 | s390x_km(ctx->aes.ccm.kmac_param.icv.b, 16, | |
1754 | ctx->aes.ccm.kmac_param.icv.b, ctx->aes.ccm.fc, | |
1755 | ctx->aes.ccm.kmac_param.k); | |
1756 | ctx->aes.ccm.blocks++; | |
1757 | } | |
1758 | } | |
1759 | ||
1760 | /*- | |
1761 | * En/de-crypt plain/cipher-text. Compute tag from plaintext. Returns 0 for | |
1762 | * success. | |
1763 | */ | |
1764 | static int s390x_aes_ccm(S390X_AES_CCM_CTX *ctx, const unsigned char *in, | |
1765 | unsigned char *out, size_t len, int enc) | |
1766 | { | |
1767 | size_t n, rem; | |
1768 | unsigned int i, l, num; | |
1769 | unsigned char flags; | |
1770 | ||
1771 | flags = ctx->aes.ccm.nonce.b[0]; | |
1772 | if (!(flags & S390X_CCM_AAD_FLAG)) { | |
1773 | s390x_km(ctx->aes.ccm.nonce.b, 16, ctx->aes.ccm.kmac_param.icv.b, | |
1774 | ctx->aes.ccm.fc, ctx->aes.ccm.kmac_param.k); | |
1775 | ctx->aes.ccm.blocks++; | |
1776 | } | |
1777 | l = flags & 0x7; | |
1778 | ctx->aes.ccm.nonce.b[0] = l; | |
1779 | ||
1780 | /*- | |
1781 | * Reconstruct length from encoded length field | |
1782 | * and initialize it with counter value. | |
1783 | */ | |
1784 | n = 0; | |
1785 | for (i = 15 - l; i < 15; i++) { | |
1786 | n |= ctx->aes.ccm.nonce.b[i]; | |
1787 | ctx->aes.ccm.nonce.b[i] = 0; | |
1788 | n <<= 8; | |
1789 | } | |
1790 | n |= ctx->aes.ccm.nonce.b[15]; | |
1791 | ctx->aes.ccm.nonce.b[15] = 1; | |
1792 | ||
1793 | if (n != len) | |
dd6b2706 | 1794 | return -1; /* length mismatch */ |
39f5b069 PS |
1795 | |
1796 | if (enc) { | |
1797 | /* Two operations per block plus one for tag encryption */ | |
1798 | ctx->aes.ccm.blocks += (((len + 15) >> 4) << 1) + 1; | |
1799 | if (ctx->aes.ccm.blocks > (1ULL << 61)) | |
dd6b2706 | 1800 | return -2; /* too much data */ |
39f5b069 PS |
1801 | } |
1802 | ||
1803 | num = 0; | |
1804 | rem = len & 0xf; | |
25868993 | 1805 | len &= ~(size_t)0xf; |
39f5b069 PS |
1806 | |
1807 | if (enc) { | |
1808 | /* mac-then-encrypt */ | |
1809 | if (len) | |
1810 | s390x_kmac(in, len, ctx->aes.ccm.fc, &ctx->aes.ccm.kmac_param); | |
1811 | if (rem) { | |
1812 | for (i = 0; i < rem; i++) | |
1813 | ctx->aes.ccm.kmac_param.icv.b[i] ^= in[len + i]; | |
1814 | ||
1815 | s390x_km(ctx->aes.ccm.kmac_param.icv.b, 16, | |
1816 | ctx->aes.ccm.kmac_param.icv.b, ctx->aes.ccm.fc, | |
1817 | ctx->aes.ccm.kmac_param.k); | |
1818 | } | |
1819 | ||
1820 | CRYPTO_ctr128_encrypt_ctr32(in, out, len + rem, &ctx->aes.key.k, | |
1821 | ctx->aes.ccm.nonce.b, ctx->aes.ccm.buf.b, | |
1822 | &num, (ctr128_f)AES_ctr32_encrypt); | |
1823 | } else { | |
1824 | /* decrypt-then-mac */ | |
1825 | CRYPTO_ctr128_encrypt_ctr32(in, out, len + rem, &ctx->aes.key.k, | |
1826 | ctx->aes.ccm.nonce.b, ctx->aes.ccm.buf.b, | |
1827 | &num, (ctr128_f)AES_ctr32_encrypt); | |
1828 | ||
1829 | if (len) | |
1830 | s390x_kmac(out, 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] ^= out[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 | /* encrypt tag */ | |
1841 | for (i = 15 - l; i < 16; i++) | |
1842 | ctx->aes.ccm.nonce.b[i] = 0; | |
1843 | ||
1844 | s390x_km(ctx->aes.ccm.nonce.b, 16, ctx->aes.ccm.buf.b, ctx->aes.ccm.fc, | |
1845 | ctx->aes.ccm.kmac_param.k); | |
1846 | ctx->aes.ccm.kmac_param.icv.g[0] ^= ctx->aes.ccm.buf.g[0]; | |
1847 | ctx->aes.ccm.kmac_param.icv.g[1] ^= ctx->aes.ccm.buf.g[1]; | |
1848 | ||
dd6b2706 | 1849 | ctx->aes.ccm.nonce.b[0] = flags; /* restore flags field */ |
39f5b069 PS |
1850 | return 0; |
1851 | } | |
1852 | ||
1853 | /*- | |
1854 | * En/de-crypt and authenticate TLS packet. Returns the number of bytes written | |
1855 | * if successful. Otherwise -1 is returned. | |
1856 | */ | |
1857 | static int s390x_aes_ccm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
1858 | const unsigned char *in, size_t len) | |
1859 | { | |
1860 | S390X_AES_CCM_CTX *cctx = EVP_C_DATA(S390X_AES_CCM_CTX, ctx); | |
1861 | unsigned char *ivec = EVP_CIPHER_CTX_iv_noconst(ctx); | |
1862 | unsigned char *buf = EVP_CIPHER_CTX_buf_noconst(ctx); | |
1863 | const int enc = EVP_CIPHER_CTX_encrypting(ctx); | |
1864 | ||
1865 | if (out != in | |
1866 | || len < (EVP_CCM_TLS_EXPLICIT_IV_LEN + (size_t)cctx->aes.ccm.m)) | |
1867 | return -1; | |
1868 | ||
1869 | if (enc) { | |
1870 | /* Set explicit iv (sequence number). */ | |
1871 | memcpy(out, buf, EVP_CCM_TLS_EXPLICIT_IV_LEN); | |
1872 | } | |
1873 | ||
1874 | len -= EVP_CCM_TLS_EXPLICIT_IV_LEN + cctx->aes.ccm.m; | |
1875 | /*- | |
1876 | * Get explicit iv (sequence number). We already have fixed iv | |
1877 | * (server/client_write_iv) here. | |
1878 | */ | |
1879 | memcpy(ivec + EVP_CCM_TLS_FIXED_IV_LEN, in, EVP_CCM_TLS_EXPLICIT_IV_LEN); | |
1880 | s390x_aes_ccm_setiv(cctx, ivec, len); | |
1881 | ||
1882 | /* Process aad (sequence number|type|version|length) */ | |
1883 | s390x_aes_ccm_aad(cctx, buf, cctx->aes.ccm.tls_aad_len); | |
1884 | ||
1885 | in += EVP_CCM_TLS_EXPLICIT_IV_LEN; | |
1886 | out += EVP_CCM_TLS_EXPLICIT_IV_LEN; | |
96530eea | 1887 | |
39f5b069 PS |
1888 | if (enc) { |
1889 | if (s390x_aes_ccm(cctx, in, out, len, enc)) | |
1890 | return -1; | |
1891 | ||
1892 | memcpy(out + len, cctx->aes.ccm.kmac_param.icv.b, cctx->aes.ccm.m); | |
1893 | return len + EVP_CCM_TLS_EXPLICIT_IV_LEN + cctx->aes.ccm.m; | |
1894 | } else { | |
1895 | if (!s390x_aes_ccm(cctx, in, out, len, enc)) { | |
1896 | if (!CRYPTO_memcmp(cctx->aes.ccm.kmac_param.icv.b, in + len, | |
1897 | cctx->aes.ccm.m)) | |
1898 | return len; | |
1899 | } | |
1900 | ||
1901 | OPENSSL_cleanse(out, len); | |
1902 | return -1; | |
1903 | } | |
1904 | } | |
1905 | ||
1906 | /*- | |
1907 | * Set key and flag field and/or iv. Returns 1 if successful. Otherwise 0 is | |
1908 | * returned. | |
1909 | */ | |
96530eea PS |
1910 | static int s390x_aes_ccm_init_key(EVP_CIPHER_CTX *ctx, |
1911 | const unsigned char *key, | |
39f5b069 PS |
1912 | const unsigned char *iv, int enc) |
1913 | { | |
1914 | S390X_AES_CCM_CTX *cctx = EVP_C_DATA(S390X_AES_CCM_CTX, ctx); | |
1915 | unsigned char *ivec; | |
1916 | int keylen; | |
1917 | ||
1918 | if (iv == NULL && key == NULL) | |
1919 | return 1; | |
1920 | ||
1921 | if (key != NULL) { | |
1922 | keylen = EVP_CIPHER_CTX_key_length(ctx); | |
8eb399fb | 1923 | cctx->aes.ccm.fc = S390X_AES_FC(keylen); |
39f5b069 PS |
1924 | memcpy(cctx->aes.ccm.kmac_param.k, key, keylen); |
1925 | ||
1926 | /* Store encoded m and l. */ | |
1927 | cctx->aes.ccm.nonce.b[0] = ((cctx->aes.ccm.l - 1) & 0x7) | |
1928 | | (((cctx->aes.ccm.m - 2) >> 1) & 0x7) << 3; | |
1929 | memset(cctx->aes.ccm.nonce.b + 1, 0, | |
1930 | sizeof(cctx->aes.ccm.nonce.b)); | |
1931 | cctx->aes.ccm.blocks = 0; | |
1932 | ||
1933 | cctx->aes.ccm.key_set = 1; | |
1934 | } | |
1935 | ||
1936 | if (iv != NULL) { | |
1937 | ivec = EVP_CIPHER_CTX_iv_noconst(ctx); | |
1938 | memcpy(ivec, iv, 15 - cctx->aes.ccm.l); | |
1939 | ||
1940 | cctx->aes.ccm.iv_set = 1; | |
1941 | } | |
1942 | ||
1943 | return 1; | |
1944 | } | |
1945 | ||
1946 | /*- | |
1947 | * Called from EVP layer to initialize context, process additional | |
1948 | * authenticated data, en/de-crypt plain/cipher-text and authenticate | |
1949 | * plaintext or process a TLS packet, depending on context. Returns bytes | |
1950 | * written on success. Otherwise -1 is returned. | |
1951 | */ | |
96530eea | 1952 | static int s390x_aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
39f5b069 PS |
1953 | const unsigned char *in, size_t len) |
1954 | { | |
1955 | S390X_AES_CCM_CTX *cctx = EVP_C_DATA(S390X_AES_CCM_CTX, ctx); | |
1956 | const int enc = EVP_CIPHER_CTX_encrypting(ctx); | |
1957 | int rv; | |
1958 | unsigned char *buf, *ivec; | |
1959 | ||
1960 | if (!cctx->aes.ccm.key_set) | |
1961 | return -1; | |
1962 | ||
1963 | if (cctx->aes.ccm.tls_aad_len >= 0) | |
1964 | return s390x_aes_ccm_tls_cipher(ctx, out, in, len); | |
1965 | ||
1966 | /*- | |
1967 | * Final(): Does not return any data. Recall that ccm is mac-then-encrypt | |
1968 | * so integrity must be checked already at Update() i.e., before | |
1969 | * potentially corrupted data is output. | |
1970 | */ | |
1971 | if (in == NULL && out != NULL) | |
1972 | return 0; | |
1973 | ||
1974 | if (!cctx->aes.ccm.iv_set) | |
1975 | return -1; | |
1976 | ||
39f5b069 PS |
1977 | if (out == NULL) { |
1978 | /* Update(): Pass message length. */ | |
1979 | if (in == NULL) { | |
1980 | ivec = EVP_CIPHER_CTX_iv_noconst(ctx); | |
1981 | s390x_aes_ccm_setiv(cctx, ivec, len); | |
1982 | ||
1983 | cctx->aes.ccm.len_set = 1; | |
1984 | return len; | |
1985 | } | |
1986 | ||
1987 | /* Update(): Process aad. */ | |
1988 | if (!cctx->aes.ccm.len_set && len) | |
1989 | return -1; | |
1990 | ||
1991 | s390x_aes_ccm_aad(cctx, in, len); | |
1992 | return len; | |
1993 | } | |
1994 | ||
887e22dd PS |
1995 | /* The tag must be set before actually decrypting data */ |
1996 | if (!enc && !cctx->aes.ccm.tag_set) | |
1997 | return -1; | |
1998 | ||
39f5b069 PS |
1999 | /* Update(): Process message. */ |
2000 | ||
2001 | if (!cctx->aes.ccm.len_set) { | |
2002 | /*- | |
46d08509 | 2003 | * In case message length was not previously set explicitly via |
39f5b069 PS |
2004 | * Update(), set it now. |
2005 | */ | |
2006 | ivec = EVP_CIPHER_CTX_iv_noconst(ctx); | |
2007 | s390x_aes_ccm_setiv(cctx, ivec, len); | |
2008 | ||
2009 | cctx->aes.ccm.len_set = 1; | |
2010 | } | |
2011 | ||
2012 | if (enc) { | |
2013 | if (s390x_aes_ccm(cctx, in, out, len, enc)) | |
2014 | return -1; | |
2015 | ||
2016 | cctx->aes.ccm.tag_set = 1; | |
2017 | return len; | |
2018 | } else { | |
2019 | rv = -1; | |
2020 | ||
2021 | if (!s390x_aes_ccm(cctx, in, out, len, enc)) { | |
2022 | buf = EVP_CIPHER_CTX_buf_noconst(ctx); | |
2023 | if (!CRYPTO_memcmp(cctx->aes.ccm.kmac_param.icv.b, buf, | |
2024 | cctx->aes.ccm.m)) | |
2025 | rv = len; | |
2026 | } | |
2027 | ||
2028 | if (rv == -1) | |
2029 | OPENSSL_cleanse(out, len); | |
2030 | ||
2031 | cctx->aes.ccm.iv_set = 0; | |
2032 | cctx->aes.ccm.tag_set = 0; | |
2033 | cctx->aes.ccm.len_set = 0; | |
2034 | return rv; | |
2035 | } | |
2036 | } | |
2037 | ||
2038 | /*- | |
2039 | * Performs various operations on the context structure depending on control | |
2040 | * type. Returns 1 for success, 0 for failure and -1 for unknown control type. | |
2041 | * Code is big-endian. | |
2042 | */ | |
2043 | static int s390x_aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) | |
2044 | { | |
2045 | S390X_AES_CCM_CTX *cctx = EVP_C_DATA(S390X_AES_CCM_CTX, c); | |
2046 | unsigned char *buf, *iv; | |
2047 | int enc, len; | |
2048 | ||
2049 | switch (type) { | |
2050 | case EVP_CTRL_INIT: | |
2051 | cctx->aes.ccm.key_set = 0; | |
2052 | cctx->aes.ccm.iv_set = 0; | |
2053 | cctx->aes.ccm.l = 8; | |
2054 | cctx->aes.ccm.m = 12; | |
2055 | cctx->aes.ccm.tag_set = 0; | |
2056 | cctx->aes.ccm.len_set = 0; | |
2057 | cctx->aes.ccm.tls_aad_len = -1; | |
2058 | return 1; | |
2059 | ||
7dddf2fc SL |
2060 | case EVP_CTRL_GET_IVLEN: |
2061 | *(int *)ptr = 15 - cctx->aes.ccm.l; | |
2062 | return 1; | |
2063 | ||
39f5b069 PS |
2064 | case EVP_CTRL_AEAD_TLS1_AAD: |
2065 | if (arg != EVP_AEAD_TLS1_AAD_LEN) | |
2066 | return 0; | |
2067 | ||
2068 | /* Save the aad for later use. */ | |
2069 | buf = EVP_CIPHER_CTX_buf_noconst(c); | |
2070 | memcpy(buf, ptr, arg); | |
2071 | cctx->aes.ccm.tls_aad_len = arg; | |
2072 | ||
03a5e5ae | 2073 | len = buf[arg - 2] << 8 | buf[arg - 1]; |
39f5b069 PS |
2074 | if (len < EVP_CCM_TLS_EXPLICIT_IV_LEN) |
2075 | return 0; | |
2076 | ||
2077 | /* Correct length for explicit iv. */ | |
2078 | len -= EVP_CCM_TLS_EXPLICIT_IV_LEN; | |
2079 | ||
2080 | enc = EVP_CIPHER_CTX_encrypting(c); | |
2081 | if (!enc) { | |
2082 | if (len < cctx->aes.ccm.m) | |
2083 | return 0; | |
2084 | ||
2085 | /* Correct length for tag. */ | |
2086 | len -= cctx->aes.ccm.m; | |
2087 | } | |
2088 | ||
03a5e5ae PS |
2089 | buf[arg - 2] = len >> 8; |
2090 | buf[arg - 1] = len & 0xff; | |
2091 | ||
39f5b069 PS |
2092 | /* Extra padding: tag appended to record. */ |
2093 | return cctx->aes.ccm.m; | |
2094 | ||
2095 | case EVP_CTRL_CCM_SET_IV_FIXED: | |
2096 | if (arg != EVP_CCM_TLS_FIXED_IV_LEN) | |
2097 | return 0; | |
2098 | ||
2099 | /* Copy to first part of the iv. */ | |
2100 | iv = EVP_CIPHER_CTX_iv_noconst(c); | |
2101 | memcpy(iv, ptr, arg); | |
2102 | return 1; | |
2103 | ||
2104 | case EVP_CTRL_AEAD_SET_IVLEN: | |
2105 | arg = 15 - arg; | |
2106 | /* fall-through */ | |
2107 | ||
2108 | case EVP_CTRL_CCM_SET_L: | |
2109 | if (arg < 2 || arg > 8) | |
2110 | return 0; | |
2111 | ||
2112 | cctx->aes.ccm.l = arg; | |
2113 | return 1; | |
2114 | ||
2115 | case EVP_CTRL_AEAD_SET_TAG: | |
2116 | if ((arg & 1) || arg < 4 || arg > 16) | |
2117 | return 0; | |
2118 | ||
2119 | enc = EVP_CIPHER_CTX_encrypting(c); | |
2120 | if (enc && ptr) | |
2121 | return 0; | |
2122 | ||
2123 | if (ptr) { | |
2124 | cctx->aes.ccm.tag_set = 1; | |
2125 | buf = EVP_CIPHER_CTX_buf_noconst(c); | |
2126 | memcpy(buf, ptr, arg); | |
2127 | } | |
2128 | ||
2129 | cctx->aes.ccm.m = arg; | |
2130 | return 1; | |
2131 | ||
2132 | case EVP_CTRL_AEAD_GET_TAG: | |
2133 | enc = EVP_CIPHER_CTX_encrypting(c); | |
2134 | if (!enc || !cctx->aes.ccm.tag_set) | |
2135 | return 0; | |
2136 | ||
2137 | if(arg < cctx->aes.ccm.m) | |
2138 | return 0; | |
2139 | ||
2140 | memcpy(ptr, cctx->aes.ccm.kmac_param.icv.b, cctx->aes.ccm.m); | |
2141 | cctx->aes.ccm.tag_set = 0; | |
2142 | cctx->aes.ccm.iv_set = 0; | |
2143 | cctx->aes.ccm.len_set = 0; | |
2144 | return 1; | |
2145 | ||
2146 | case EVP_CTRL_COPY: | |
2147 | return 1; | |
2148 | ||
2149 | default: | |
2150 | return -1; | |
2151 | } | |
2152 | } | |
2153 | ||
96530eea PS |
2154 | # define s390x_aes_ccm_cleanup aes_ccm_cleanup |
2155 | ||
2156 | # ifndef OPENSSL_NO_OCB | |
dd6b2706 | 2157 | # define S390X_AES_OCB_CTX EVP_AES_OCB_CTX |
96530eea PS |
2158 | |
2159 | # define s390x_aes_ocb_init_key aes_ocb_init_key | |
2160 | static int s390x_aes_ocb_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
2161 | const unsigned char *iv, int enc); | |
2162 | # define s390x_aes_ocb_cipher aes_ocb_cipher | |
2163 | static int s390x_aes_ocb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
2164 | const unsigned char *in, size_t len); | |
2165 | # define s390x_aes_ocb_cleanup aes_ocb_cleanup | |
2166 | static int s390x_aes_ocb_cleanup(EVP_CIPHER_CTX *); | |
2167 | # define s390x_aes_ocb_ctrl aes_ocb_ctrl | |
2168 | static int s390x_aes_ocb_ctrl(EVP_CIPHER_CTX *, int type, int arg, void *ptr); | |
2169 | # endif | |
2170 | ||
e74be3d4 RL |
2171 | # ifndef OPENSSL_NO_SIV |
2172 | # define S390X_AES_SIV_CTX EVP_AES_SIV_CTX | |
e74be3d4 RL |
2173 | |
2174 | # define s390x_aes_siv_init_key aes_siv_init_key | |
2175 | # define s390x_aes_siv_cipher aes_siv_cipher | |
2176 | # define s390x_aes_siv_cleanup aes_siv_cleanup | |
2177 | # define s390x_aes_siv_ctrl aes_siv_ctrl | |
2178 | # endif | |
2179 | ||
dd6b2706 P |
2180 | # define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode, \ |
2181 | MODE,flags) \ | |
2182 | static const EVP_CIPHER s390x_aes_##keylen##_##mode = { \ | |
2183 | nid##_##keylen##_##nmode,blocksize, \ | |
2184 | keylen / 8, \ | |
2185 | ivlen, \ | |
2186 | flags | EVP_CIPH_##MODE##_MODE, \ | |
2187 | s390x_aes_##mode##_init_key, \ | |
2188 | s390x_aes_##mode##_cipher, \ | |
2189 | NULL, \ | |
2190 | sizeof(S390X_AES_##MODE##_CTX), \ | |
2191 | NULL, \ | |
2192 | NULL, \ | |
2193 | NULL, \ | |
2194 | NULL \ | |
2195 | }; \ | |
2196 | static const EVP_CIPHER aes_##keylen##_##mode = { \ | |
2197 | nid##_##keylen##_##nmode, \ | |
2198 | blocksize, \ | |
2199 | keylen / 8, \ | |
2200 | ivlen, \ | |
2201 | flags | EVP_CIPH_##MODE##_MODE, \ | |
2202 | aes_init_key, \ | |
2203 | aes_##mode##_cipher, \ | |
2204 | NULL, \ | |
2205 | sizeof(EVP_AES_KEY), \ | |
2206 | NULL, \ | |
2207 | NULL, \ | |
2208 | NULL, \ | |
2209 | NULL \ | |
2210 | }; \ | |
2211 | const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ | |
2212 | { \ | |
2213 | return S390X_aes_##keylen##_##mode##_CAPABLE ? \ | |
2214 | &s390x_aes_##keylen##_##mode : &aes_##keylen##_##mode; \ | |
96530eea PS |
2215 | } |
2216 | ||
2217 | # define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags)\ | |
dd6b2706 P |
2218 | static const EVP_CIPHER s390x_aes_##keylen##_##mode = { \ |
2219 | nid##_##keylen##_##mode, \ | |
2220 | blocksize, \ | |
2221 | (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE||EVP_CIPH_##MODE##_MODE==EVP_CIPH_SIV_MODE ? 2 : 1) * keylen / 8, \ | |
2222 | ivlen, \ | |
2223 | flags | EVP_CIPH_##MODE##_MODE, \ | |
2224 | s390x_aes_##mode##_init_key, \ | |
2225 | s390x_aes_##mode##_cipher, \ | |
2226 | s390x_aes_##mode##_cleanup, \ | |
2227 | sizeof(S390X_AES_##MODE##_CTX), \ | |
2228 | NULL, \ | |
2229 | NULL, \ | |
2230 | s390x_aes_##mode##_ctrl, \ | |
2231 | NULL \ | |
2232 | }; \ | |
2233 | static const EVP_CIPHER aes_##keylen##_##mode = { \ | |
2234 | nid##_##keylen##_##mode,blocksize, \ | |
2235 | (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE||EVP_CIPH_##MODE##_MODE==EVP_CIPH_SIV_MODE ? 2 : 1) * keylen / 8, \ | |
2236 | ivlen, \ | |
2237 | flags | EVP_CIPH_##MODE##_MODE, \ | |
2238 | aes_##mode##_init_key, \ | |
2239 | aes_##mode##_cipher, \ | |
2240 | aes_##mode##_cleanup, \ | |
2241 | sizeof(EVP_AES_##MODE##_CTX), \ | |
2242 | NULL, \ | |
2243 | NULL, \ | |
2244 | aes_##mode##_ctrl, \ | |
2245 | NULL \ | |
2246 | }; \ | |
2247 | const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ | |
2248 | { \ | |
2249 | return S390X_aes_##keylen##_##mode##_CAPABLE ? \ | |
2250 | &s390x_aes_##keylen##_##mode : &aes_##keylen##_##mode; \ | |
96530eea PS |
2251 | } |
2252 | ||
5158c763 | 2253 | #else |
17f121de | 2254 | |
5158c763 | 2255 | # define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \ |
17f121de | 2256 | static const EVP_CIPHER aes_##keylen##_##mode = { \ |
0f113f3e MC |
2257 | nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \ |
2258 | flags|EVP_CIPH_##MODE##_MODE, \ | |
2259 | aes_init_key, \ | |
2260 | aes_##mode##_cipher, \ | |
2261 | NULL, \ | |
2262 | sizeof(EVP_AES_KEY), \ | |
2263 | NULL,NULL,NULL,NULL }; \ | |
17f121de AP |
2264 | const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ |
2265 | { return &aes_##keylen##_##mode; } | |
d1fff483 | 2266 | |
5158c763 | 2267 | # define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \ |
17f121de | 2268 | static const EVP_CIPHER aes_##keylen##_##mode = { \ |
0f113f3e | 2269 | nid##_##keylen##_##mode,blocksize, \ |
b1ceb439 TS |
2270 | (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE||EVP_CIPH_##MODE##_MODE==EVP_CIPH_SIV_MODE?2:1)*keylen/8, \ |
2271 | ivlen, \ | |
0f113f3e MC |
2272 | flags|EVP_CIPH_##MODE##_MODE, \ |
2273 | aes_##mode##_init_key, \ | |
2274 | aes_##mode##_cipher, \ | |
2275 | aes_##mode##_cleanup, \ | |
2276 | sizeof(EVP_AES_##MODE##_CTX), \ | |
2277 | NULL,NULL,aes_##mode##_ctrl,NULL }; \ | |
17f121de AP |
2278 | const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ |
2279 | { return &aes_##keylen##_##mode; } | |
9575d1a9 | 2280 | |
5158c763 | 2281 | #endif |
9575d1a9 | 2282 | |
5158c763 | 2283 | #define BLOCK_CIPHER_generic_pack(nid,keylen,flags) \ |
0f113f3e MC |
2284 | BLOCK_CIPHER_generic(nid,keylen,16,16,cbc,cbc,CBC,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \ |
2285 | BLOCK_CIPHER_generic(nid,keylen,16,0,ecb,ecb,ECB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \ | |
2286 | BLOCK_CIPHER_generic(nid,keylen,1,16,ofb128,ofb,OFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \ | |
2287 | BLOCK_CIPHER_generic(nid,keylen,1,16,cfb128,cfb,CFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \ | |
2288 | BLOCK_CIPHER_generic(nid,keylen,1,16,cfb1,cfb1,CFB,flags) \ | |
2289 | BLOCK_CIPHER_generic(nid,keylen,1,16,cfb8,cfb8,CFB,flags) \ | |
2290 | BLOCK_CIPHER_generic(nid,keylen,1,16,ctr,ctr,CTR,flags) | |
d1fff483 AP |
2291 | |
2292 | static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
2293 | const unsigned char *iv, int enc) |
2294 | { | |
2295 | int ret, mode; | |
6435f0f6 | 2296 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); |
0f113f3e | 2297 | |
6435f0f6 | 2298 | mode = EVP_CIPHER_CTX_mode(ctx); |
0f113f3e | 2299 | if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE) |
c01a3c6d | 2300 | && !enc) { |
5158c763 | 2301 | #ifdef HWAES_CAPABLE |
0f113f3e | 2302 | if (HWAES_CAPABLE) { |
6435f0f6 RL |
2303 | ret = HWAES_set_decrypt_key(key, |
2304 | EVP_CIPHER_CTX_key_length(ctx) * 8, | |
2305 | &dat->ks.ks); | |
0f113f3e MC |
2306 | dat->block = (block128_f) HWAES_decrypt; |
2307 | dat->stream.cbc = NULL; | |
5158c763 | 2308 | # ifdef HWAES_cbc_encrypt |
0f113f3e MC |
2309 | if (mode == EVP_CIPH_CBC_MODE) |
2310 | dat->stream.cbc = (cbc128_f) HWAES_cbc_encrypt; | |
0f113f3e | 2311 | # endif |
5158c763 MC |
2312 | } else |
2313 | #endif | |
2314 | #ifdef BSAES_CAPABLE | |
0f113f3e | 2315 | if (BSAES_CAPABLE && mode == EVP_CIPH_CBC_MODE) { |
6435f0f6 RL |
2316 | ret = AES_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, |
2317 | &dat->ks.ks); | |
0f113f3e MC |
2318 | dat->block = (block128_f) AES_decrypt; |
2319 | dat->stream.cbc = (cbc128_f) bsaes_cbc_encrypt; | |
2320 | } else | |
5158c763 MC |
2321 | #endif |
2322 | #ifdef VPAES_CAPABLE | |
0f113f3e | 2323 | if (VPAES_CAPABLE) { |
6435f0f6 RL |
2324 | ret = vpaes_set_decrypt_key(key, |
2325 | EVP_CIPHER_CTX_key_length(ctx) * 8, | |
2326 | &dat->ks.ks); | |
0f113f3e MC |
2327 | dat->block = (block128_f) vpaes_decrypt; |
2328 | dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? | |
2329 | (cbc128_f) vpaes_cbc_encrypt : NULL; | |
2330 | } else | |
5158c763 | 2331 | #endif |
0f113f3e | 2332 | { |
6435f0f6 RL |
2333 | ret = AES_set_decrypt_key(key, |
2334 | EVP_CIPHER_CTX_key_length(ctx) * 8, | |
2335 | &dat->ks.ks); | |
0f113f3e MC |
2336 | dat->block = (block128_f) AES_decrypt; |
2337 | dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? | |
2338 | (cbc128_f) AES_cbc_encrypt : NULL; | |
c01a3c6d | 2339 | } |
0f113f3e | 2340 | } else |
5158c763 | 2341 | #ifdef HWAES_CAPABLE |
0f113f3e | 2342 | if (HWAES_CAPABLE) { |
6435f0f6 RL |
2343 | ret = HWAES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, |
2344 | &dat->ks.ks); | |
0f113f3e MC |
2345 | dat->block = (block128_f) HWAES_encrypt; |
2346 | dat->stream.cbc = NULL; | |
5158c763 | 2347 | # ifdef HWAES_cbc_encrypt |
0f113f3e MC |
2348 | if (mode == EVP_CIPH_CBC_MODE) |
2349 | dat->stream.cbc = (cbc128_f) HWAES_cbc_encrypt; | |
2350 | else | |
5158c763 MC |
2351 | # endif |
2352 | # ifdef HWAES_ctr32_encrypt_blocks | |
0f113f3e MC |
2353 | if (mode == EVP_CIPH_CTR_MODE) |
2354 | dat->stream.ctr = (ctr128_f) HWAES_ctr32_encrypt_blocks; | |
2355 | else | |
5158c763 | 2356 | # endif |
0f113f3e MC |
2357 | (void)0; /* terminate potentially open 'else' */ |
2358 | } else | |
5158c763 MC |
2359 | #endif |
2360 | #ifdef BSAES_CAPABLE | |
0f113f3e | 2361 | if (BSAES_CAPABLE && mode == EVP_CIPH_CTR_MODE) { |
6435f0f6 RL |
2362 | ret = AES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, |
2363 | &dat->ks.ks); | |
0f113f3e MC |
2364 | dat->block = (block128_f) AES_encrypt; |
2365 | dat->stream.ctr = (ctr128_f) bsaes_ctr32_encrypt_blocks; | |
2366 | } else | |
5158c763 MC |
2367 | #endif |
2368 | #ifdef VPAES_CAPABLE | |
0f113f3e | 2369 | if (VPAES_CAPABLE) { |
6435f0f6 RL |
2370 | ret = vpaes_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, |
2371 | &dat->ks.ks); | |
0f113f3e MC |
2372 | dat->block = (block128_f) vpaes_encrypt; |
2373 | dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? | |
2374 | (cbc128_f) vpaes_cbc_encrypt : NULL; | |
2375 | } else | |
5158c763 | 2376 | #endif |
0f113f3e | 2377 | { |
6435f0f6 RL |
2378 | ret = AES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, |
2379 | &dat->ks.ks); | |
0f113f3e MC |
2380 | dat->block = (block128_f) AES_encrypt; |
2381 | dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? | |
2382 | (cbc128_f) AES_cbc_encrypt : NULL; | |
5158c763 | 2383 | #ifdef AES_CTR_ASM |
0f113f3e MC |
2384 | if (mode == EVP_CIPH_CTR_MODE) |
2385 | dat->stream.ctr = (ctr128_f) AES_ctr32_encrypt; | |
5158c763 | 2386 | #endif |
0f113f3e | 2387 | } |
d1fff483 | 2388 | |
0f113f3e MC |
2389 | if (ret < 0) { |
2390 | EVPerr(EVP_F_AES_INIT_KEY, EVP_R_AES_KEY_SETUP_FAILED); | |
2391 | return 0; | |
2392 | } | |
d1fff483 | 2393 | |
0f113f3e MC |
2394 | return 1; |
2395 | } | |
d1fff483 | 2396 | |
0f113f3e MC |
2397 | static int aes_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
2398 | const unsigned char *in, size_t len) | |
17f121de | 2399 | { |
6435f0f6 | 2400 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); |
8ca28da0 | 2401 | |
0f113f3e | 2402 | if (dat->stream.cbc) |
6435f0f6 RL |
2403 | (*dat->stream.cbc) (in, out, len, &dat->ks, |
2404 | EVP_CIPHER_CTX_iv_noconst(ctx), | |
2405 | EVP_CIPHER_CTX_encrypting(ctx)); | |
2406 | else if (EVP_CIPHER_CTX_encrypting(ctx)) | |
2407 | CRYPTO_cbc128_encrypt(in, out, len, &dat->ks, | |
2408 | EVP_CIPHER_CTX_iv_noconst(ctx), dat->block); | |
0f113f3e | 2409 | else |
6435f0f6 RL |
2410 | CRYPTO_cbc128_decrypt(in, out, len, &dat->ks, |
2411 | EVP_CIPHER_CTX_iv_noconst(ctx), dat->block); | |
17f121de | 2412 | |
0f113f3e | 2413 | return 1; |
17f121de AP |
2414 | } |
2415 | ||
0f113f3e MC |
2416 | static int aes_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
2417 | const unsigned char *in, size_t len) | |
17f121de | 2418 | { |
6435f0f6 | 2419 | size_t bl = EVP_CIPHER_CTX_block_size(ctx); |
0f113f3e | 2420 | size_t i; |
6435f0f6 | 2421 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); |
17f121de | 2422 | |
0f113f3e MC |
2423 | if (len < bl) |
2424 | return 1; | |
17f121de | 2425 | |
0f113f3e MC |
2426 | for (i = 0, len -= bl; i <= len; i += bl) |
2427 | (*dat->block) (in + i, out + i, &dat->ks); | |
17f121de | 2428 | |
0f113f3e | 2429 | return 1; |
17f121de | 2430 | } |
deb2c1a1 | 2431 | |
0f113f3e MC |
2432 | static int aes_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
2433 | const unsigned char *in, size_t len) | |
17f121de | 2434 | { |
6435f0f6 | 2435 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); |
8ca28da0 | 2436 | |
6435f0f6 | 2437 | int num = EVP_CIPHER_CTX_num(ctx); |
0f113f3e | 2438 | CRYPTO_ofb128_encrypt(in, out, len, &dat->ks, |
6435f0f6 RL |
2439 | EVP_CIPHER_CTX_iv_noconst(ctx), &num, dat->block); |
2440 | EVP_CIPHER_CTX_set_num(ctx, num); | |
0f113f3e | 2441 | return 1; |
17f121de | 2442 | } |
deb2c1a1 | 2443 | |
0f113f3e MC |
2444 | static int aes_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
2445 | const unsigned char *in, size_t len) | |
17f121de | 2446 | { |
6435f0f6 | 2447 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); |
8ca28da0 | 2448 | |
6435f0f6 | 2449 | int num = EVP_CIPHER_CTX_num(ctx); |
0f113f3e | 2450 | CRYPTO_cfb128_encrypt(in, out, len, &dat->ks, |
6435f0f6 RL |
2451 | EVP_CIPHER_CTX_iv_noconst(ctx), &num, |
2452 | EVP_CIPHER_CTX_encrypting(ctx), dat->block); | |
2453 | EVP_CIPHER_CTX_set_num(ctx, num); | |
0f113f3e | 2454 | return 1; |
17f121de AP |
2455 | } |
2456 | ||
0f113f3e MC |
2457 | static int aes_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
2458 | const unsigned char *in, size_t len) | |
17f121de | 2459 | { |
6435f0f6 | 2460 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); |
8ca28da0 | 2461 | |
6435f0f6 | 2462 | int num = EVP_CIPHER_CTX_num(ctx); |
0f113f3e | 2463 | CRYPTO_cfb128_8_encrypt(in, out, len, &dat->ks, |
6435f0f6 RL |
2464 | EVP_CIPHER_CTX_iv_noconst(ctx), &num, |
2465 | EVP_CIPHER_CTX_encrypting(ctx), dat->block); | |
2466 | EVP_CIPHER_CTX_set_num(ctx, num); | |
0f113f3e | 2467 | return 1; |
17f121de | 2468 | } |
8d1ebe0b | 2469 | |
0f113f3e MC |
2470 | static int aes_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
2471 | const unsigned char *in, size_t len) | |
17f121de | 2472 | { |
6435f0f6 | 2473 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); |
0f113f3e | 2474 | |
6435f0f6 RL |
2475 | if (EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS)) { |
2476 | int num = EVP_CIPHER_CTX_num(ctx); | |
0f113f3e | 2477 | CRYPTO_cfb128_1_encrypt(in, out, len, &dat->ks, |
6435f0f6 RL |
2478 | EVP_CIPHER_CTX_iv_noconst(ctx), &num, |
2479 | EVP_CIPHER_CTX_encrypting(ctx), dat->block); | |
2480 | EVP_CIPHER_CTX_set_num(ctx, num); | |
0f113f3e MC |
2481 | return 1; |
2482 | } | |
2483 | ||
2484 | while (len >= MAXBITCHUNK) { | |
6435f0f6 | 2485 | int num = EVP_CIPHER_CTX_num(ctx); |
0f113f3e | 2486 | CRYPTO_cfb128_1_encrypt(in, out, MAXBITCHUNK * 8, &dat->ks, |
6435f0f6 RL |
2487 | EVP_CIPHER_CTX_iv_noconst(ctx), &num, |
2488 | EVP_CIPHER_CTX_encrypting(ctx), dat->block); | |
2489 | EVP_CIPHER_CTX_set_num(ctx, num); | |
0f113f3e | 2490 | len -= MAXBITCHUNK; |
604e591e BE |
2491 | out += MAXBITCHUNK; |
2492 | in += MAXBITCHUNK; | |
0f113f3e | 2493 | } |
6435f0f6 RL |
2494 | if (len) { |
2495 | int num = EVP_CIPHER_CTX_num(ctx); | |
0f113f3e | 2496 | CRYPTO_cfb128_1_encrypt(in, out, len * 8, &dat->ks, |
6435f0f6 RL |
2497 | EVP_CIPHER_CTX_iv_noconst(ctx), &num, |
2498 | EVP_CIPHER_CTX_encrypting(ctx), dat->block); | |
2499 | EVP_CIPHER_CTX_set_num(ctx, num); | |
2500 | } | |
0f113f3e MC |
2501 | |
2502 | return 1; | |
17f121de | 2503 | } |
8d1ebe0b | 2504 | |
0f113f3e MC |
2505 | static int aes_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
2506 | const unsigned char *in, size_t len) | |
d976f992 | 2507 | { |
6435f0f6 RL |
2508 | unsigned int num = EVP_CIPHER_CTX_num(ctx); |
2509 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); | |
0f113f3e MC |
2510 | |
2511 | if (dat->stream.ctr) | |
2512 | CRYPTO_ctr128_encrypt_ctr32(in, out, len, &dat->ks, | |
6435f0f6 RL |
2513 | EVP_CIPHER_CTX_iv_noconst(ctx), |
2514 | EVP_CIPHER_CTX_buf_noconst(ctx), | |
2515 | &num, dat->stream.ctr); | |
0f113f3e MC |
2516 | else |
2517 | CRYPTO_ctr128_encrypt(in, out, len, &dat->ks, | |
6435f0f6 RL |
2518 | EVP_CIPHER_CTX_iv_noconst(ctx), |
2519 | EVP_CIPHER_CTX_buf_noconst(ctx), &num, | |
2520 | dat->block); | |
2521 | EVP_CIPHER_CTX_set_num(ctx, num); | |
0f113f3e | 2522 | return 1; |
d976f992 AP |
2523 | } |
2524 | ||
0f113f3e MC |
2525 | BLOCK_CIPHER_generic_pack(NID_aes, 128, 0) |
2526 | BLOCK_CIPHER_generic_pack(NID_aes, 192, 0) | |
2527 | BLOCK_CIPHER_generic_pack(NID_aes, 256, 0) | |
bdaa5415 DSH |
2528 | |
2529 | static int aes_gcm_cleanup(EVP_CIPHER_CTX *c) | |
0f113f3e | 2530 | { |
6435f0f6 | 2531 | EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,c); |
273a0218 BE |
2532 | if (gctx == NULL) |
2533 | return 0; | |
0f113f3e | 2534 | OPENSSL_cleanse(&gctx->gcm, sizeof(gctx->gcm)); |
6435f0f6 | 2535 | if (gctx->iv != EVP_CIPHER_CTX_iv_noconst(c)) |
0f113f3e MC |
2536 | OPENSSL_free(gctx->iv); |
2537 | return 1; | |
2538 | } | |
bdaa5415 DSH |
2539 | |
2540 | static int aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) | |
0f113f3e | 2541 | { |
6435f0f6 | 2542 | EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,c); |
0f113f3e MC |
2543 | switch (type) { |
2544 | case EVP_CTRL_INIT: | |
2545 | gctx->key_set = 0; | |
2546 | gctx->iv_set = 0; | |
7dddf2fc | 2547 | gctx->ivlen = EVP_CIPHER_iv_length(c->cipher); |
c5307d9c | 2548 | gctx->iv = c->iv; |
0f113f3e MC |
2549 | gctx->taglen = -1; |
2550 | gctx->iv_gen = 0; | |
2551 | gctx->tls_aad_len = -1; | |
2552 | return 1; | |
2553 | ||
7dddf2fc SL |
2554 | case EVP_CTRL_GET_IVLEN: |
2555 | *(int *)ptr = gctx->ivlen; | |
2556 | return 1; | |
2557 | ||
e640fa02 | 2558 | case EVP_CTRL_AEAD_SET_IVLEN: |
0f113f3e MC |
2559 | if (arg <= 0) |
2560 | return 0; | |
2561 | /* Allocate memory for IV if needed */ | |
2562 | if ((arg > EVP_MAX_IV_LENGTH) && (arg > gctx->ivlen)) { | |
c5307d9c | 2563 | if (gctx->iv != c->iv) |
0f113f3e | 2564 | OPENSSL_free(gctx->iv); |
cdb10bae RS |
2565 | if ((gctx->iv = OPENSSL_malloc(arg)) == NULL) { |
2566 | EVPerr(EVP_F_AES_GCM_CTRL, ERR_R_MALLOC_FAILURE); | |
0f113f3e | 2567 | return 0; |
cdb10bae | 2568 | } |
0f113f3e MC |
2569 | } |
2570 | gctx->ivlen = arg; | |
2571 | return 1; | |
2572 | ||
e640fa02 | 2573 | case EVP_CTRL_AEAD_SET_TAG: |
c5307d9c | 2574 | if (arg <= 0 || arg > 16 || c->encrypt) |
0f113f3e | 2575 | return 0; |
c5307d9c | 2576 | memcpy(c->buf, ptr, arg); |
0f113f3e MC |
2577 | gctx->taglen = arg; |
2578 | return 1; | |
2579 | ||
e640fa02 | 2580 | case EVP_CTRL_AEAD_GET_TAG: |
c5307d9c | 2581 | if (arg <= 0 || arg > 16 || !c->encrypt |
6435f0f6 | 2582 | || gctx->taglen < 0) |
0f113f3e | 2583 | return 0; |
c5307d9c | 2584 | memcpy(ptr, c->buf, arg); |
0f113f3e MC |
2585 | return 1; |
2586 | ||
ecd1557f | 2587 | case EVP_CTRL_GET_IV: |
bcf082d1 | 2588 | if (gctx->iv_gen != 1 && gctx->iv_gen_rand != 1) |
ecd1557f BP |
2589 | return 0; |
2590 | if (gctx->ivlen != arg) | |
2591 | return 0; | |
2592 | memcpy(ptr, gctx->iv, arg); | |
2593 | return 1; | |
2594 | ||
0f113f3e MC |
2595 | case EVP_CTRL_GCM_SET_IV_FIXED: |
2596 | /* Special case: -1 length restores whole IV */ | |
2597 | if (arg == -1) { | |
2598 | memcpy(gctx->iv, ptr, gctx->ivlen); | |
2599 | gctx->iv_gen = 1; | |
2600 | return 1; | |
2601 | } | |
2602 | /* | |
2603 | * Fixed field must be at least 4 bytes and invocation field at least | |
2604 | * 8. | |
2605 | */ | |
2606 | if ((arg < 4) || (gctx->ivlen - arg) < 8) | |
2607 | return 0; | |
2608 | if (arg) | |
2609 | memcpy(gctx->iv, ptr, arg); | |
c5307d9c | 2610 | if (c->encrypt && RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0) |
16cfc2c9 | 2611 | return 0; |
0f113f3e MC |
2612 | gctx->iv_gen = 1; |
2613 | return 1; | |
2614 | ||
2615 | case EVP_CTRL_GCM_IV_GEN: | |
2616 | if (gctx->iv_gen == 0 || gctx->key_set == 0) | |
2617 | return 0; | |
2618 | CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen); | |
2619 | if (arg <= 0 || arg > gctx->ivlen) | |
2620 | arg = gctx->ivlen; | |
2621 | memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg); | |
2622 | /* | |
2623 | * Invocation field will be at least 8 bytes in size and so no need | |
2624 | * to check wrap around or increment more than last 8 bytes. | |
2625 | */ | |
2626 | ctr64_inc(gctx->iv + gctx->ivlen - 8); | |
2627 | gctx->iv_set = 1; | |
2628 | return 1; | |
2629 | ||
2630 | case EVP_CTRL_GCM_SET_IV_INV: | |
c5307d9c | 2631 | if (gctx->iv_gen == 0 || gctx->key_set == 0 || c->encrypt) |
0f113f3e MC |
2632 | return 0; |
2633 | memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg); | |
2634 | CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen); | |
2635 | gctx->iv_set = 1; | |
2636 | return 1; | |
2637 | ||
2638 | case EVP_CTRL_AEAD_TLS1_AAD: | |
2639 | /* Save the AAD for later use */ | |
c8269881 | 2640 | if (arg != EVP_AEAD_TLS1_AAD_LEN) |
0f113f3e | 2641 | return 0; |
c5307d9c | 2642 | memcpy(c->buf, ptr, arg); |
0f113f3e | 2643 | gctx->tls_aad_len = arg; |
d6b34570 | 2644 | gctx->tls_enc_records = 0; |
0f113f3e | 2645 | { |
c5307d9c | 2646 | unsigned int len = c->buf[arg - 2] << 8 | c->buf[arg - 1]; |
0f113f3e | 2647 | /* Correct length for explicit IV */ |
2198b3a5 AP |
2648 | if (len < EVP_GCM_TLS_EXPLICIT_IV_LEN) |
2649 | return 0; | |
0f113f3e MC |
2650 | len -= EVP_GCM_TLS_EXPLICIT_IV_LEN; |
2651 | /* If decrypting correct for tag too */ | |
c5307d9c | 2652 | if (!c->encrypt) { |
2198b3a5 AP |
2653 | if (len < EVP_GCM_TLS_TAG_LEN) |
2654 | return 0; | |
0f113f3e | 2655 | len -= EVP_GCM_TLS_TAG_LEN; |
2198b3a5 | 2656 | } |
c5307d9c AP |
2657 | c->buf[arg - 2] = len >> 8; |
2658 | c->buf[arg - 1] = len & 0xff; | |
0f113f3e MC |
2659 | } |
2660 | /* Extra padding: tag appended to record */ | |
2661 | return EVP_GCM_TLS_TAG_LEN; | |
2662 | ||
2663 | case EVP_CTRL_COPY: | |
2664 | { | |
2665 | EVP_CIPHER_CTX *out = ptr; | |
6435f0f6 | 2666 | EVP_AES_GCM_CTX *gctx_out = EVP_C_DATA(EVP_AES_GCM_CTX,out); |
0f113f3e MC |
2667 | if (gctx->gcm.key) { |
2668 | if (gctx->gcm.key != &gctx->ks) | |
2669 | return 0; | |
2670 | gctx_out->gcm.key = &gctx_out->ks; | |
2671 | } | |
c5307d9c AP |
2672 | if (gctx->iv == c->iv) |
2673 | gctx_out->iv = out->iv; | |
0f113f3e | 2674 | else { |
cdb10bae RS |
2675 | if ((gctx_out->iv = OPENSSL_malloc(gctx->ivlen)) == NULL) { |
2676 | EVPerr(EVP_F_AES_GCM_CTRL, ERR_R_MALLOC_FAILURE); | |
0f113f3e | 2677 | return 0; |
cdb10bae | 2678 | } |
0f113f3e MC |
2679 | memcpy(gctx_out->iv, gctx->iv, gctx->ivlen); |
2680 | } | |
2681 | return 1; | |
2682 | } | |
2683 | ||
2684 | default: | |
2685 | return -1; | |
2686 | ||
2687 | } | |
2688 | } | |
bdaa5415 DSH |
2689 | |
2690 | static int aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
2691 | const unsigned char *iv, int enc) |
2692 | { | |
6435f0f6 | 2693 | EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,ctx); |
0f113f3e MC |
2694 | if (!iv && !key) |
2695 | return 1; | |
2696 | if (key) { | |
2697 | do { | |
5158c763 | 2698 | #ifdef HWAES_CAPABLE |
0f113f3e | 2699 | if (HWAES_CAPABLE) { |
c5307d9c | 2700 | HWAES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks); |
0f113f3e MC |
2701 | CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, |
2702 | (block128_f) HWAES_encrypt); | |
5158c763 | 2703 | # ifdef HWAES_ctr32_encrypt_blocks |
0f113f3e | 2704 | gctx->ctr = (ctr128_f) HWAES_ctr32_encrypt_blocks; |
5158c763 | 2705 | # else |
0f113f3e | 2706 | gctx->ctr = NULL; |
5158c763 | 2707 | # endif |
0f113f3e MC |
2708 | break; |
2709 | } else | |
5158c763 MC |
2710 | #endif |
2711 | #ifdef BSAES_CAPABLE | |
0f113f3e | 2712 | if (BSAES_CAPABLE) { |
c5307d9c | 2713 | AES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks); |
0f113f3e MC |
2714 | CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, |
2715 | (block128_f) AES_encrypt); | |
2716 | gctx->ctr = (ctr128_f) bsaes_ctr32_encrypt_blocks; | |
2717 | break; | |
2718 | } else | |
5158c763 MC |
2719 | #endif |
2720 | #ifdef VPAES_CAPABLE | |
0f113f3e | 2721 | if (VPAES_CAPABLE) { |
c5307d9c | 2722 | vpaes_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks); |
0f113f3e MC |
2723 | CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, |
2724 | (block128_f) vpaes_encrypt); | |
2725 | gctx->ctr = NULL; | |
2726 | break; | |
2727 | } else | |
5158c763 | 2728 | #endif |
0f113f3e MC |
2729 | (void)0; /* terminate potentially open 'else' */ |
2730 | ||
c5307d9c | 2731 | AES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks); |
0f113f3e MC |
2732 | CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, |
2733 | (block128_f) AES_encrypt); | |
5158c763 | 2734 | #ifdef AES_CTR_ASM |
0f113f3e | 2735 | gctx->ctr = (ctr128_f) AES_ctr32_encrypt; |
5158c763 | 2736 | #else |
0f113f3e | 2737 | gctx->ctr = NULL; |
5158c763 | 2738 | #endif |
0f113f3e MC |
2739 | } while (0); |
2740 | ||
2741 | /* | |
2742 | * If we have an iv can set it directly, otherwise use saved IV. | |
2743 | */ | |
2744 | if (iv == NULL && gctx->iv_set) | |
2745 | iv = gctx->iv; | |
2746 | if (iv) { | |
2747 | CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); | |
2748 | gctx->iv_set = 1; | |
2749 | } | |
2750 | gctx->key_set = 1; | |
2751 | } else { | |
2752 | /* If key set use IV, otherwise copy */ | |
2753 | if (gctx->key_set) | |
2754 | CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); | |
2755 | else | |
2756 | memcpy(gctx->iv, iv, gctx->ivlen); | |
2757 | gctx->iv_set = 1; | |
2758 | gctx->iv_gen = 0; | |
2759 | } | |
2760 | return 1; | |
2761 | } | |
2762 | ||
2763 | /* | |
2764 | * Handle TLS GCM packet format. This consists of the last portion of the IV | |
28dd49fa DSH |
2765 | * followed by the payload and finally the tag. On encrypt generate IV, |
2766 | * encrypt payload and write the tag. On verify retrieve IV, decrypt payload | |
2767 | * and verify tag. | |
2768 | */ | |
2769 | ||
2770 | static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
0f113f3e MC |
2771 | const unsigned char *in, size_t len) |
2772 | { | |
6435f0f6 | 2773 | EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,ctx); |
0f113f3e MC |
2774 | int rv = -1; |
2775 | /* Encrypt/decrypt must be performed in place */ | |
2776 | if (out != in | |
2777 | || len < (EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN)) | |
2778 | return -1; | |
df443918 | 2779 | |
d6b34570 P |
2780 | /* |
2781 | * Check for too many keys as per FIPS 140-2 IG A.5 "Key/IV Pair Uniqueness | |
2782 | * Requirements from SP 800-38D". The requirements is for one party to the | |
2783 | * communication to fail after 2^64 - 1 keys. We do this on the encrypting | |
2784 | * side only. | |
2785 | */ | |
2786 | if (ctx->encrypt && ++gctx->tls_enc_records == 0) { | |
2787 | EVPerr(EVP_F_AES_GCM_TLS_CIPHER, EVP_R_TOO_MANY_RECORDS); | |
2788 | goto err; | |
2789 | } | |
2790 | ||
0f113f3e MC |
2791 | /* |
2792 | * Set IV from start of buffer or generate IV and write to start of | |
2793 | * buffer. | |
2794 | */ | |
c5307d9c AP |
2795 | if (EVP_CIPHER_CTX_ctrl(ctx, ctx->encrypt ? EVP_CTRL_GCM_IV_GEN |
2796 | : EVP_CTRL_GCM_SET_IV_INV, | |
0f113f3e MC |
2797 | EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0) |
2798 | goto err; | |
2799 | /* Use saved AAD */ | |
c5307d9c | 2800 | if (CRYPTO_gcm128_aad(&gctx->gcm, ctx->buf, gctx->tls_aad_len)) |
0f113f3e MC |
2801 | goto err; |
2802 | /* Fix buffer and length to point to payload */ | |
2803 | in += EVP_GCM_TLS_EXPLICIT_IV_LEN; | |
2804 | out += EVP_GCM_TLS_EXPLICIT_IV_LEN; | |
2805 | len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN; | |
c5307d9c | 2806 | if (ctx->encrypt) { |
0f113f3e MC |
2807 | /* Encrypt payload */ |
2808 | if (gctx->ctr) { | |
2809 | size_t bulk = 0; | |
5158c763 | 2810 | #if defined(AES_GCM_ASM) |
0f113f3e MC |
2811 | if (len >= 32 && AES_GCM_ASM(gctx)) { |
2812 | if (CRYPTO_gcm128_encrypt(&gctx->gcm, NULL, NULL, 0)) | |
2813 | return -1; | |
2814 | ||
2815 | bulk = AES_gcm_encrypt(in, out, len, | |
2816 | gctx->gcm.key, | |
2817 | gctx->gcm.Yi.c, gctx->gcm.Xi.u); | |
2818 | gctx->gcm.len.u[1] += bulk; | |
2819 | } | |
5158c763 | 2820 | #endif |
0f113f3e MC |
2821 | if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm, |
2822 | in + bulk, | |
2823 | out + bulk, | |
2824 | len - bulk, gctx->ctr)) | |
2825 | goto err; | |
2826 | } else { | |
2827 | size_t bulk = 0; | |
5158c763 | 2828 | #if defined(AES_GCM_ASM2) |
0f113f3e MC |
2829 | if (len >= 32 && AES_GCM_ASM2(gctx)) { |
2830 | if (CRYPTO_gcm128_encrypt(&gctx->gcm, NULL, NULL, 0)) | |
2831 | return -1; | |
2832 | ||
2833 | bulk = AES_gcm_encrypt(in, out, len, | |
2834 | gctx->gcm.key, | |
2835 | gctx->gcm.Yi.c, gctx->gcm.Xi.u); | |
2836 | gctx->gcm.len.u[1] += bulk; | |
2837 | } | |
5158c763 | 2838 | #endif |
0f113f3e MC |
2839 | if (CRYPTO_gcm128_encrypt(&gctx->gcm, |
2840 | in + bulk, out + bulk, len - bulk)) | |
2841 | goto err; | |
2842 | } | |
2843 | out += len; | |
2844 | /* Finally write tag */ | |
2845 | CRYPTO_gcm128_tag(&gctx->gcm, out, EVP_GCM_TLS_TAG_LEN); | |
2846 | rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN; | |
2847 | } else { | |
2848 | /* Decrypt */ | |
2849 | if (gctx->ctr) { | |
2850 | size_t bulk = 0; | |
5158c763 | 2851 | #if defined(AES_GCM_ASM) |
0f113f3e MC |
2852 | if (len >= 16 && AES_GCM_ASM(gctx)) { |
2853 | if (CRYPTO_gcm128_decrypt(&gctx->gcm, NULL, NULL, 0)) | |
2854 | return -1; | |
2855 | ||
2856 | bulk = AES_gcm_decrypt(in, out, len, | |
2857 | gctx->gcm.key, | |
2858 | gctx->gcm.Yi.c, gctx->gcm.Xi.u); | |
2859 | gctx->gcm.len.u[1] += bulk; | |
2860 | } | |
5158c763 | 2861 | #endif |
0f113f3e MC |
2862 | if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm, |
2863 | in + bulk, | |
2864 | out + bulk, | |
2865 | len - bulk, gctx->ctr)) | |
2866 | goto err; | |
2867 | } else { | |
2868 | size_t bulk = 0; | |
5158c763 | 2869 | #if defined(AES_GCM_ASM2) |
0f113f3e MC |
2870 | if (len >= 16 && AES_GCM_ASM2(gctx)) { |
2871 | if (CRYPTO_gcm128_decrypt(&gctx->gcm, NULL, NULL, 0)) | |
2872 | return -1; | |
2873 | ||
2874 | bulk = AES_gcm_decrypt(in, out, len, | |
2875 | gctx->gcm.key, | |
2876 | gctx->gcm.Yi.c, gctx->gcm.Xi.u); | |
2877 | gctx->gcm.len.u[1] += bulk; | |
2878 | } | |
5158c763 | 2879 | #endif |
0f113f3e MC |
2880 | if (CRYPTO_gcm128_decrypt(&gctx->gcm, |
2881 | in + bulk, out + bulk, len - bulk)) | |
2882 | goto err; | |
2883 | } | |
2884 | /* Retrieve tag */ | |
c5307d9c | 2885 | CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, EVP_GCM_TLS_TAG_LEN); |
0f113f3e | 2886 | /* If tag mismatch wipe buffer */ |
c5307d9c | 2887 | if (CRYPTO_memcmp(ctx->buf, in + len, EVP_GCM_TLS_TAG_LEN)) { |
0f113f3e MC |
2888 | OPENSSL_cleanse(out, len); |
2889 | goto err; | |
2890 | } | |
2891 | rv = len; | |
2892 | } | |
2893 | ||
2894 | err: | |
2895 | gctx->iv_set = 0; | |
2896 | gctx->tls_aad_len = -1; | |
2897 | return rv; | |
2898 | } | |
28dd49fa | 2899 | |
bcf082d1 SL |
2900 | #ifdef FIPS_MODE |
2901 | /* | |
2902 | * See SP800-38D (GCM) Section 8 "Uniqueness requirement on IVS and keys" | |
2903 | * | |
2904 | * See also 8.2.2 RBG-based construction. | |
2905 | * Random construction consists of a free field (which can be NULL) and a | |
2906 | * random field which will use a DRBG that can return at least 96 bits of | |
2907 | * entropy strength. (The DRBG must be seeded by the FIPS module). | |
2908 | */ | |
2909 | static int aes_gcm_iv_generate(EVP_AES_GCM_CTX *gctx, int offset) | |
2910 | { | |
2911 | int sz = gctx->ivlen - offset; | |
2912 | ||
2913 | /* Must be at least 96 bits */ | |
2914 | if (sz <= 0 || gctx->ivlen < 12) | |
2915 | return 0; | |
2916 | ||
2917 | /* Use DRBG to generate random iv */ | |
2918 | if (RAND_bytes(gctx->iv + offset, sz) <= 0) | |
2919 | return 0; | |
2920 | return 1; | |
2921 | } | |
2922 | #endif /* FIPS_MODE */ | |
2923 | ||
17f121de | 2924 | static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e MC |
2925 | const unsigned char *in, size_t len) |
2926 | { | |
6435f0f6 | 2927 | EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,ctx); |
bcf082d1 | 2928 | |
0f113f3e MC |
2929 | /* If not set up, return error */ |
2930 | if (!gctx->key_set) | |
2931 | return -1; | |
2932 | ||
2933 | if (gctx->tls_aad_len >= 0) | |
2934 | return aes_gcm_tls_cipher(ctx, out, in, len); | |
2935 | ||
bcf082d1 SL |
2936 | #ifdef FIPS_MODE |
2937 | /* | |
2938 | * FIPS requires generation of AES-GCM IV's inside the FIPS module. | |
2939 | * The IV can still be set externally (the security policy will state that | |
2940 | * this is not FIPS compliant). There are some applications | |
2941 | * where setting the IV externally is the only option available. | |
2942 | */ | |
2943 | if (!gctx->iv_set) { | |
2944 | if (!ctx->encrypt || !aes_gcm_iv_generate(gctx, 0)) | |
2945 | return -1; | |
2946 | CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen); | |
2947 | gctx->iv_set = 1; | |
2948 | gctx->iv_gen_rand = 1; | |
2949 | } | |
2950 | #else | |
0f113f3e MC |
2951 | if (!gctx->iv_set) |
2952 | return -1; | |
bcf082d1 SL |
2953 | #endif /* FIPS_MODE */ |
2954 | ||
0f113f3e MC |
2955 | if (in) { |
2956 | if (out == NULL) { | |
2957 | if (CRYPTO_gcm128_aad(&gctx->gcm, in, len)) | |
2958 | return -1; | |
c5307d9c | 2959 | } else if (ctx->encrypt) { |
0f113f3e MC |
2960 | if (gctx->ctr) { |
2961 | size_t bulk = 0; | |
5158c763 | 2962 | #if defined(AES_GCM_ASM) |
0f113f3e MC |
2963 | if (len >= 32 && AES_GCM_ASM(gctx)) { |
2964 | size_t res = (16 - gctx->gcm.mres) % 16; | |
2965 | ||
2966 | if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, res)) | |
2967 | return -1; | |
2968 | ||
2969 | bulk = AES_gcm_encrypt(in + res, | |
2970 | out + res, len - res, | |
2971 | gctx->gcm.key, gctx->gcm.Yi.c, | |
2972 | gctx->gcm.Xi.u); | |
2973 | gctx->gcm.len.u[1] += bulk; | |
2974 | bulk += res; | |
2975 | } | |
5158c763 | 2976 | #endif |
0f113f3e MC |
2977 | if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm, |
2978 | in + bulk, | |
2979 | out + bulk, | |
2980 | len - bulk, gctx->ctr)) | |
2981 | return -1; | |
2982 | } else { | |
2983 | size_t bulk = 0; | |
5158c763 | 2984 | #if defined(AES_GCM_ASM2) |
0f113f3e MC |
2985 | if (len >= 32 && AES_GCM_ASM2(gctx)) { |
2986 | size_t res = (16 - gctx->gcm.mres) % 16; | |
2987 | ||
2988 | if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, res)) | |
2989 | return -1; | |
2990 | ||
2991 | bulk = AES_gcm_encrypt(in + res, | |
2992 | out + res, len - res, | |
2993 | gctx->gcm.key, gctx->gcm.Yi.c, | |
2994 | gctx->gcm.Xi.u); | |
2995 | gctx->gcm.len.u[1] += bulk; | |
2996 | bulk += res; | |
2997 | } | |
5158c763 | 2998 | #endif |
0f113f3e MC |
2999 | if (CRYPTO_gcm128_encrypt(&gctx->gcm, |
3000 | in + bulk, out + bulk, len - bulk)) | |
3001 | return -1; | |
3002 | } | |
3003 | } else { | |
3004 | if (gctx->ctr) { | |
3005 | size_t bulk = 0; | |
5158c763 | 3006 | #if defined(AES_GCM_ASM) |
0f113f3e MC |
3007 | if (len >= 16 && AES_GCM_ASM(gctx)) { |
3008 | size_t res = (16 - gctx->gcm.mres) % 16; | |
3009 | ||
3010 | if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, res)) | |
3011 | return -1; | |
3012 | ||
3013 | bulk = AES_gcm_decrypt(in + res, | |
3014 | out + res, len - res, | |
3015 | gctx->gcm.key, | |
3016 | gctx->gcm.Yi.c, gctx->gcm.Xi.u); | |
3017 | gctx->gcm.len.u[1] += bulk; | |
3018 | bulk += res; | |
3019 | } | |
5158c763 | 3020 | #endif |
0f113f3e MC |
3021 | if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm, |
3022 | in + bulk, | |
3023 | out + bulk, | |
3024 | len - bulk, gctx->ctr)) | |
3025 | return -1; | |
3026 | } else { | |
3027 | size_t bulk = 0; | |
5158c763 | 3028 | #if defined(AES_GCM_ASM2) |
0f113f3e MC |
3029 | if (len >= 16 && AES_GCM_ASM2(gctx)) { |
3030 | size_t res = (16 - gctx->gcm.mres) % 16; | |
3031 | ||
3032 | if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, res)) | |
3033 | return -1; | |
3034 | ||
3035 | bulk = AES_gcm_decrypt(in + res, | |
3036 | out + res, len - res, | |
3037 | gctx->gcm.key, | |
3038 | gctx->gcm.Yi.c, gctx->gcm.Xi.u); | |
3039 | gctx->gcm.len.u[1] += bulk; | |
3040 | bulk += res; | |
3041 | } | |
5158c763 | 3042 | #endif |
0f113f3e MC |
3043 | if (CRYPTO_gcm128_decrypt(&gctx->gcm, |
3044 | in + bulk, out + bulk, len - bulk)) | |
3045 | return -1; | |
3046 | } | |
3047 | } | |
3048 | return len; | |
3049 | } else { | |
c5307d9c | 3050 | if (!ctx->encrypt) { |
0f113f3e MC |
3051 | if (gctx->taglen < 0) |
3052 | return -1; | |
c5307d9c | 3053 | if (CRYPTO_gcm128_finish(&gctx->gcm, ctx->buf, gctx->taglen) != 0) |
0f113f3e MC |
3054 | return -1; |
3055 | gctx->iv_set = 0; | |
3056 | return 0; | |
3057 | } | |
c5307d9c | 3058 | CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, 16); |
0f113f3e MC |
3059 | gctx->taglen = 16; |
3060 | /* Don't reuse the IV */ | |
3061 | gctx->iv_set = 0; | |
3062 | return 0; | |
3063 | } | |
3064 | ||
3065 | } | |
3066 | ||
5158c763 | 3067 | #define CUSTOM_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 \ |
0f113f3e MC |
3068 | | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \ |
3069 | | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT \ | |
7dddf2fc | 3070 | | EVP_CIPH_CUSTOM_COPY | EVP_CIPH_CUSTOM_IV_LENGTH) |
0f113f3e MC |
3071 | |
3072 | BLOCK_CIPHER_custom(NID_aes, 128, 1, 12, gcm, GCM, | |
3073 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) | |
3074 | BLOCK_CIPHER_custom(NID_aes, 192, 1, 12, gcm, GCM, | |
3075 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) | |
3076 | BLOCK_CIPHER_custom(NID_aes, 256, 1, 12, gcm, GCM, | |
3077 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) | |
32a2d8dd DSH |
3078 | |
3079 | static int aes_xts_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) | |
0f113f3e | 3080 | { |
2c840201 P |
3081 | EVP_AES_XTS_CTX *xctx = EVP_C_DATA(EVP_AES_XTS_CTX, c); |
3082 | ||
0f113f3e MC |
3083 | if (type == EVP_CTRL_COPY) { |
3084 | EVP_CIPHER_CTX *out = ptr; | |
6435f0f6 | 3085 | EVP_AES_XTS_CTX *xctx_out = EVP_C_DATA(EVP_AES_XTS_CTX,out); |
2c840201 | 3086 | |
0f113f3e MC |
3087 | if (xctx->xts.key1) { |
3088 | if (xctx->xts.key1 != &xctx->ks1) | |
3089 | return 0; | |
3090 | xctx_out->xts.key1 = &xctx_out->ks1; | |
3091 | } | |
3092 | if (xctx->xts.key2) { | |
3093 | if (xctx->xts.key2 != &xctx->ks2) | |
3094 | return 0; | |
3095 | xctx_out->xts.key2 = &xctx_out->ks2; | |
3096 | } | |
3097 | return 1; | |
3098 | } else if (type != EVP_CTRL_INIT) | |
3099 | return -1; | |
3100 | /* key1 and key2 are used as an indicator both key and IV are set */ | |
3101 | xctx->xts.key1 = NULL; | |
3102 | xctx->xts.key2 = NULL; | |
3103 | return 1; | |
3104 | } | |
32a2d8dd DSH |
3105 | |
3106 | static int aes_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
3107 | const unsigned char *iv, int enc) |
3108 | { | |
6435f0f6 | 3109 | EVP_AES_XTS_CTX *xctx = EVP_C_DATA(EVP_AES_XTS_CTX,ctx); |
2c840201 | 3110 | |
0f113f3e MC |
3111 | if (!iv && !key) |
3112 | return 1; | |
3113 | ||
3538b0f7 | 3114 | if (key) { |
0f113f3e | 3115 | do { |
3538b0f7 P |
3116 | /* The key is two half length keys in reality */ |
3117 | const int bytes = EVP_CIPHER_CTX_key_length(ctx) / 2; | |
3118 | const int bits = bytes * 8; | |
3119 | ||
3120 | /* | |
3121 | * Verify that the two keys are different. | |
3122 | * | |
3123 | * This addresses the vulnerability described in Rogaway's | |
3124 | * September 2004 paper: | |
3125 | * | |
3126 | * "Efficient Instantiations of Tweakable Blockciphers and | |
3127 | * Refinements to Modes OCB and PMAC". | |
3128 | * (http://web.cs.ucdavis.edu/~rogaway/papers/offsets.pdf) | |
3129 | * | |
3130 | * FIPS 140-2 IG A.9 XTS-AES Key Generation Requirements states | |
3131 | * that: | |
3132 | * "The check for Key_1 != Key_2 shall be done at any place | |
3133 | * BEFORE using the keys in the XTS-AES algorithm to process | |
3134 | * data with them." | |
3135 | */ | |
2c840201 P |
3136 | if ((!allow_insecure_decrypt || enc) |
3137 | && CRYPTO_memcmp(key, key + bytes, bytes) == 0) { | |
3538b0f7 P |
3138 | EVPerr(EVP_F_AES_XTS_INIT_KEY, EVP_R_XTS_DUPLICATED_KEYS); |
3139 | return 0; | |
3140 | } | |
3141 | ||
5158c763 | 3142 | #ifdef AES_XTS_ASM |
0f113f3e | 3143 | xctx->stream = enc ? AES_xts_encrypt : AES_xts_decrypt; |
5158c763 | 3144 | #else |
0f113f3e | 3145 | xctx->stream = NULL; |
5158c763 | 3146 | #endif |
0f113f3e | 3147 | /* key_len is two AES keys */ |
5158c763 | 3148 | #ifdef HWAES_CAPABLE |
0f113f3e MC |
3149 | if (HWAES_CAPABLE) { |
3150 | if (enc) { | |
3538b0f7 | 3151 | HWAES_set_encrypt_key(key, bits, &xctx->ks1.ks); |
0f113f3e | 3152 | xctx->xts.block1 = (block128_f) HWAES_encrypt; |
46f047d7 AP |
3153 | # ifdef HWAES_xts_encrypt |
3154 | xctx->stream = HWAES_xts_encrypt; | |
3155 | # endif | |
0f113f3e | 3156 | } else { |
3538b0f7 | 3157 | HWAES_set_decrypt_key(key, bits, &xctx->ks1.ks); |
0f113f3e | 3158 | xctx->xts.block1 = (block128_f) HWAES_decrypt; |
46f047d7 AP |
3159 | # ifdef HWAES_xts_decrypt |
3160 | xctx->stream = HWAES_xts_decrypt; | |
3161 | #endif | |
0f113f3e MC |
3162 | } |
3163 | ||
3538b0f7 | 3164 | HWAES_set_encrypt_key(key + bytes, bits, &xctx->ks2.ks); |
0f113f3e MC |
3165 | xctx->xts.block2 = (block128_f) HWAES_encrypt; |
3166 | ||
3167 | xctx->xts.key1 = &xctx->ks1; | |
3168 | break; | |
3169 | } else | |
5158c763 MC |
3170 | #endif |
3171 | #ifdef BSAES_CAPABLE | |
0f113f3e MC |
3172 | if (BSAES_CAPABLE) |
3173 | xctx->stream = enc ? bsaes_xts_encrypt : bsaes_xts_decrypt; | |
3174 | else | |
5158c763 MC |
3175 | #endif |
3176 | #ifdef VPAES_CAPABLE | |
0f113f3e MC |
3177 | if (VPAES_CAPABLE) { |
3178 | if (enc) { | |
3538b0f7 | 3179 | vpaes_set_encrypt_key(key, bits, &xctx->ks1.ks); |
0f113f3e MC |
3180 | xctx->xts.block1 = (block128_f) vpaes_encrypt; |
3181 | } else { | |
3538b0f7 | 3182 | vpaes_set_decrypt_key(key, bits, &xctx->ks1.ks); |
0f113f3e MC |
3183 | xctx->xts.block1 = (block128_f) vpaes_decrypt; |
3184 | } | |
3185 | ||
3538b0f7 | 3186 | vpaes_set_encrypt_key(key + bytes, bits, &xctx->ks2.ks); |
0f113f3e MC |
3187 | xctx->xts.block2 = (block128_f) vpaes_encrypt; |
3188 | ||
3189 | xctx->xts.key1 = &xctx->ks1; | |
3190 | break; | |
3191 | } else | |
5158c763 | 3192 | #endif |
0f113f3e MC |
3193 | (void)0; /* terminate potentially open 'else' */ |
3194 | ||
3195 | if (enc) { | |
3538b0f7 | 3196 | AES_set_encrypt_key(key, bits, &xctx->ks1.ks); |
0f113f3e MC |
3197 | xctx->xts.block1 = (block128_f) AES_encrypt; |
3198 | } else { | |
3538b0f7 | 3199 | AES_set_decrypt_key(key, bits, &xctx->ks1.ks); |
0f113f3e MC |
3200 | xctx->xts.block1 = (block128_f) AES_decrypt; |
3201 | } | |
3202 | ||
3538b0f7 | 3203 | AES_set_encrypt_key(key + bytes, bits, &xctx->ks2.ks); |
0f113f3e MC |
3204 | xctx->xts.block2 = (block128_f) AES_encrypt; |
3205 | ||
3206 | xctx->xts.key1 = &xctx->ks1; | |
3207 | } while (0); | |
3538b0f7 | 3208 | } |
0f113f3e MC |
3209 | |
3210 | if (iv) { | |
3211 | xctx->xts.key2 = &xctx->ks2; | |
6435f0f6 | 3212 | memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 16); |
0f113f3e MC |
3213 | } |
3214 | ||
3215 | return 1; | |
3216 | } | |
32a2d8dd | 3217 | |
17f121de | 3218 | static int aes_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e MC |
3219 | const unsigned char *in, size_t len) |
3220 | { | |
6435f0f6 | 3221 | EVP_AES_XTS_CTX *xctx = EVP_C_DATA(EVP_AES_XTS_CTX,ctx); |
95eda4f0 P |
3222 | |
3223 | if (xctx->xts.key1 == NULL | |
3224 | || xctx->xts.key2 == NULL | |
3225 | || out == NULL | |
3226 | || in == NULL | |
3227 | || len < AES_BLOCK_SIZE) | |
0f113f3e | 3228 | return 0; |
95eda4f0 | 3229 | |
5516c19b | 3230 | /* |
79c44b4e | 3231 | * Impose a limit of 2^20 blocks per data unit as specified by |
5516c19b P |
3232 | * IEEE Std 1619-2018. The earlier and obsolete IEEE Std 1619-2007 |
3233 | * indicated that this was a SHOULD NOT rather than a MUST NOT. | |
3234 | * NIST SP 800-38E mandates the same limit. | |
3235 | */ | |
3236 | if (len > XTS_MAX_BLOCKS_PER_DATA_UNIT * AES_BLOCK_SIZE) { | |
3237 | EVPerr(EVP_F_AES_XTS_CIPHER, EVP_R_XTS_DATA_UNIT_IS_TOO_LARGE); | |
3238 | return 0; | |
3239 | } | |
3240 | ||
0f113f3e MC |
3241 | if (xctx->stream) |
3242 | (*xctx->stream) (in, out, len, | |
6435f0f6 RL |
3243 | xctx->xts.key1, xctx->xts.key2, |
3244 | EVP_CIPHER_CTX_iv_noconst(ctx)); | |
3245 | else if (CRYPTO_xts128_encrypt(&xctx->xts, EVP_CIPHER_CTX_iv_noconst(ctx), | |
3246 | in, out, len, | |
3247 | EVP_CIPHER_CTX_encrypting(ctx))) | |
0f113f3e MC |
3248 | return 0; |
3249 | return 1; | |
3250 | } | |
3251 | ||
5158c763 | 3252 | #define aes_xts_cleanup NULL |
0f113f3e | 3253 | |
5158c763 | 3254 | #define XTS_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 | EVP_CIPH_CUSTOM_IV \ |
0f113f3e MC |
3255 | | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT \ |
3256 | | EVP_CIPH_CUSTOM_COPY) | |
3257 | ||
3258 | BLOCK_CIPHER_custom(NID_aes, 128, 1, 16, xts, XTS, XTS_FLAGS) | |
3259 | BLOCK_CIPHER_custom(NID_aes, 256, 1, 16, xts, XTS, XTS_FLAGS) | |
23916810 DSH |
3260 | |
3261 | static int aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) | |
0f113f3e | 3262 | { |
6435f0f6 | 3263 | EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,c); |
0f113f3e MC |
3264 | switch (type) { |
3265 | case EVP_CTRL_INIT: | |
3266 | cctx->key_set = 0; | |
3267 | cctx->iv_set = 0; | |
3268 | cctx->L = 8; | |
3269 | cctx->M = 12; | |
3270 | cctx->tag_set = 0; | |
3271 | cctx->len_set = 0; | |
e75c5a79 DSH |
3272 | cctx->tls_aad_len = -1; |
3273 | return 1; | |
3274 | ||
7dddf2fc SL |
3275 | case EVP_CTRL_GET_IVLEN: |
3276 | *(int *)ptr = 15 - cctx->L; | |
3277 | return 1; | |
3278 | ||
e75c5a79 DSH |
3279 | case EVP_CTRL_AEAD_TLS1_AAD: |
3280 | /* Save the AAD for later use */ | |
3281 | if (arg != EVP_AEAD_TLS1_AAD_LEN) | |
3282 | return 0; | |
6435f0f6 | 3283 | memcpy(EVP_CIPHER_CTX_buf_noconst(c), ptr, arg); |
e75c5a79 DSH |
3284 | cctx->tls_aad_len = arg; |
3285 | { | |
6435f0f6 RL |
3286 | uint16_t len = |
3287 | EVP_CIPHER_CTX_buf_noconst(c)[arg - 2] << 8 | |
3288 | | EVP_CIPHER_CTX_buf_noconst(c)[arg - 1]; | |
e75c5a79 | 3289 | /* Correct length for explicit IV */ |
2198b3a5 AP |
3290 | if (len < EVP_CCM_TLS_EXPLICIT_IV_LEN) |
3291 | return 0; | |
e75c5a79 DSH |
3292 | len -= EVP_CCM_TLS_EXPLICIT_IV_LEN; |
3293 | /* If decrypting correct for tag too */ | |
2198b3a5 AP |
3294 | if (!EVP_CIPHER_CTX_encrypting(c)) { |
3295 | if (len < cctx->M) | |
3296 | return 0; | |
e75c5a79 | 3297 | len -= cctx->M; |
2198b3a5 | 3298 | } |
6435f0f6 RL |
3299 | EVP_CIPHER_CTX_buf_noconst(c)[arg - 2] = len >> 8; |
3300 | EVP_CIPHER_CTX_buf_noconst(c)[arg - 1] = len & 0xff; | |
e75c5a79 DSH |
3301 | } |
3302 | /* Extra padding: tag appended to record */ | |
3303 | return cctx->M; | |
3304 | ||
3305 | case EVP_CTRL_CCM_SET_IV_FIXED: | |
3306 | /* Sanity check length */ | |
3307 | if (arg != EVP_CCM_TLS_FIXED_IV_LEN) | |
3308 | return 0; | |
3309 | /* Just copy to first part of IV */ | |
6435f0f6 | 3310 | memcpy(EVP_CIPHER_CTX_iv_noconst(c), ptr, arg); |
0f113f3e MC |
3311 | return 1; |
3312 | ||
e640fa02 | 3313 | case EVP_CTRL_AEAD_SET_IVLEN: |
0f113f3e | 3314 | arg = 15 - arg; |
018fcbec | 3315 | /* fall thru */ |
0f113f3e MC |
3316 | case EVP_CTRL_CCM_SET_L: |
3317 | if (arg < 2 || arg > 8) | |
3318 | return 0; | |
3319 | cctx->L = arg; | |
3320 | return 1; | |
3321 | ||
e640fa02 | 3322 | case EVP_CTRL_AEAD_SET_TAG: |
0f113f3e MC |
3323 | if ((arg & 1) || arg < 4 || arg > 16) |
3324 | return 0; | |
6435f0f6 | 3325 | if (EVP_CIPHER_CTX_encrypting(c) && ptr) |
0f113f3e MC |
3326 | return 0; |
3327 | if (ptr) { | |
3328 | cctx->tag_set = 1; | |
6435f0f6 | 3329 | memcpy(EVP_CIPHER_CTX_buf_noconst(c), ptr, arg); |
0f113f3e MC |
3330 | } |
3331 | cctx->M = arg; | |
3332 | return 1; | |
3333 | ||
e640fa02 | 3334 | case EVP_CTRL_AEAD_GET_TAG: |
6435f0f6 | 3335 | if (!EVP_CIPHER_CTX_encrypting(c) || !cctx->tag_set) |
0f113f3e MC |
3336 | return 0; |
3337 | if (!CRYPTO_ccm128_tag(&cctx->ccm, ptr, (size_t)arg)) | |
3338 | return 0; | |
3339 | cctx->tag_set = 0; | |
3340 | cctx->iv_set = 0; | |
3341 | cctx->len_set = 0; | |
3342 | return 1; | |
3343 | ||
3344 | case EVP_CTRL_COPY: | |
3345 | { | |
3346 | EVP_CIPHER_CTX *out = ptr; | |
6435f0f6 | 3347 | EVP_AES_CCM_CTX *cctx_out = EVP_C_DATA(EVP_AES_CCM_CTX,out); |
0f113f3e MC |
3348 | if (cctx->ccm.key) { |
3349 | if (cctx->ccm.key != &cctx->ks) | |
3350 | return 0; | |
3351 | cctx_out->ccm.key = &cctx_out->ks; | |
3352 | } | |
3353 | return 1; | |
3354 | } | |
3355 | ||
3356 | default: | |
3357 | return -1; | |
3358 | ||
3359 | } | |
3360 | } | |
23916810 DSH |
3361 | |
3362 | static int aes_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
3363 | const unsigned char *iv, int enc) |
3364 | { | |
6435f0f6 | 3365 | EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,ctx); |
0f113f3e MC |
3366 | if (!iv && !key) |
3367 | return 1; | |
3368 | if (key) | |
3369 | do { | |
5158c763 | 3370 | #ifdef HWAES_CAPABLE |
0f113f3e | 3371 | if (HWAES_CAPABLE) { |
6435f0f6 RL |
3372 | HWAES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, |
3373 | &cctx->ks.ks); | |
0f113f3e MC |
3374 | |
3375 | CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, | |
3376 | &cctx->ks, (block128_f) HWAES_encrypt); | |
3377 | cctx->str = NULL; | |
3378 | cctx->key_set = 1; | |
3379 | break; | |
3380 | } else | |
5158c763 MC |
3381 | #endif |
3382 | #ifdef VPAES_CAPABLE | |
0f113f3e | 3383 | if (VPAES_CAPABLE) { |
6435f0f6 RL |
3384 | vpaes_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, |
3385 | &cctx->ks.ks); | |
0f113f3e MC |
3386 | CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, |
3387 | &cctx->ks, (block128_f) vpaes_encrypt); | |
3388 | cctx->str = NULL; | |
3389 | cctx->key_set = 1; | |
3390 | break; | |
3391 | } | |
5158c763 | 3392 | #endif |
6435f0f6 RL |
3393 | AES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, |
3394 | &cctx->ks.ks); | |
0f113f3e MC |
3395 | CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, |
3396 | &cctx->ks, (block128_f) AES_encrypt); | |
3397 | cctx->str = NULL; | |
3398 | cctx->key_set = 1; | |
3399 | } while (0); | |
3400 | if (iv) { | |
6435f0f6 | 3401 | memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 15 - cctx->L); |
0f113f3e MC |
3402 | cctx->iv_set = 1; |
3403 | } | |
3404 | return 1; | |
3405 | } | |
23916810 | 3406 | |
e75c5a79 DSH |
3407 | static int aes_ccm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
3408 | const unsigned char *in, size_t len) | |
3409 | { | |
6435f0f6 | 3410 | EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,ctx); |
e75c5a79 DSH |
3411 | CCM128_CONTEXT *ccm = &cctx->ccm; |
3412 | /* Encrypt/decrypt must be performed in place */ | |
3413 | if (out != in || len < (EVP_CCM_TLS_EXPLICIT_IV_LEN + (size_t)cctx->M)) | |
3414 | return -1; | |
3415 | /* If encrypting set explicit IV from sequence number (start of AAD) */ | |
6435f0f6 RL |
3416 | if (EVP_CIPHER_CTX_encrypting(ctx)) |
3417 | memcpy(out, EVP_CIPHER_CTX_buf_noconst(ctx), | |
3418 | EVP_CCM_TLS_EXPLICIT_IV_LEN); | |
e75c5a79 | 3419 | /* Get rest of IV from explicit IV */ |
6435f0f6 RL |
3420 | memcpy(EVP_CIPHER_CTX_iv_noconst(ctx) + EVP_CCM_TLS_FIXED_IV_LEN, in, |
3421 | EVP_CCM_TLS_EXPLICIT_IV_LEN); | |
e75c5a79 DSH |
3422 | /* Correct length value */ |
3423 | len -= EVP_CCM_TLS_EXPLICIT_IV_LEN + cctx->M; | |
6435f0f6 RL |
3424 | if (CRYPTO_ccm128_setiv(ccm, EVP_CIPHER_CTX_iv_noconst(ctx), 15 - cctx->L, |
3425 | len)) | |
e75c5a79 DSH |
3426 | return -1; |
3427 | /* Use saved AAD */ | |
6435f0f6 | 3428 | CRYPTO_ccm128_aad(ccm, EVP_CIPHER_CTX_buf_noconst(ctx), cctx->tls_aad_len); |
e75c5a79 DSH |
3429 | /* Fix buffer to point to payload */ |
3430 | in += EVP_CCM_TLS_EXPLICIT_IV_LEN; | |
3431 | out += EVP_CCM_TLS_EXPLICIT_IV_LEN; | |
6435f0f6 | 3432 | if (EVP_CIPHER_CTX_encrypting(ctx)) { |
e75c5a79 DSH |
3433 | if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len, |
3434 | cctx->str) : | |
3435 | CRYPTO_ccm128_encrypt(ccm, in, out, len)) | |
3436 | return -1; | |
3437 | if (!CRYPTO_ccm128_tag(ccm, out + len, cctx->M)) | |
3438 | return -1; | |
3439 | return len + EVP_CCM_TLS_EXPLICIT_IV_LEN + cctx->M; | |
3440 | } else { | |
3441 | if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len, | |
3442 | cctx->str) : | |
3443 | !CRYPTO_ccm128_decrypt(ccm, in, out, len)) { | |
3444 | unsigned char tag[16]; | |
3445 | if (CRYPTO_ccm128_tag(ccm, tag, cctx->M)) { | |
3446 | if (!CRYPTO_memcmp(tag, in + len, cctx->M)) | |
3447 | return len; | |
3448 | } | |
3449 | } | |
3450 | OPENSSL_cleanse(out, len); | |
3451 | return -1; | |
3452 | } | |
3453 | } | |
3454 | ||
17f121de | 3455 | static int aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e MC |
3456 | const unsigned char *in, size_t len) |
3457 | { | |
6435f0f6 | 3458 | EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,ctx); |
0f113f3e MC |
3459 | CCM128_CONTEXT *ccm = &cctx->ccm; |
3460 | /* If not set up, return error */ | |
e75c5a79 DSH |
3461 | if (!cctx->key_set) |
3462 | return -1; | |
3463 | ||
3464 | if (cctx->tls_aad_len >= 0) | |
3465 | return aes_ccm_tls_cipher(ctx, out, in, len); | |
3466 | ||
197421b1 DSH |
3467 | /* EVP_*Final() doesn't return any data */ |
3468 | if (in == NULL && out != NULL) | |
3469 | return 0; | |
3470 | ||
e75c5a79 | 3471 | if (!cctx->iv_set) |
0f113f3e | 3472 | return -1; |
e75c5a79 | 3473 | |
0f113f3e MC |
3474 | if (!out) { |
3475 | if (!in) { | |
6435f0f6 RL |
3476 | if (CRYPTO_ccm128_setiv(ccm, EVP_CIPHER_CTX_iv_noconst(ctx), |
3477 | 15 - cctx->L, len)) | |
0f113f3e MC |
3478 | return -1; |
3479 | cctx->len_set = 1; | |
3480 | return len; | |
3481 | } | |
3482 | /* If have AAD need message length */ | |
3483 | if (!cctx->len_set && len) | |
3484 | return -1; | |
3485 | CRYPTO_ccm128_aad(ccm, in, len); | |
3486 | return len; | |
3487 | } | |
67c81ec3 TN |
3488 | |
3489 | /* The tag must be set before actually decrypting data */ | |
3490 | if (!EVP_CIPHER_CTX_encrypting(ctx) && !cctx->tag_set) | |
3491 | return -1; | |
3492 | ||
0f113f3e MC |
3493 | /* If not set length yet do it */ |
3494 | if (!cctx->len_set) { | |
6435f0f6 RL |
3495 | if (CRYPTO_ccm128_setiv(ccm, EVP_CIPHER_CTX_iv_noconst(ctx), |
3496 | 15 - cctx->L, len)) | |
0f113f3e MC |
3497 | return -1; |
3498 | cctx->len_set = 1; | |
3499 | } | |
6435f0f6 | 3500 | if (EVP_CIPHER_CTX_encrypting(ctx)) { |
0f113f3e MC |
3501 | if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len, |
3502 | cctx->str) : | |
3503 | CRYPTO_ccm128_encrypt(ccm, in, out, len)) | |
3504 | return -1; | |
3505 | cctx->tag_set = 1; | |
3506 | return len; | |
3507 | } else { | |
3508 | int rv = -1; | |
3509 | if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len, | |
3510 | cctx->str) : | |
3511 | !CRYPTO_ccm128_decrypt(ccm, in, out, len)) { | |
3512 | unsigned char tag[16]; | |
3513 | if (CRYPTO_ccm128_tag(ccm, tag, cctx->M)) { | |
6435f0f6 RL |
3514 | if (!CRYPTO_memcmp(tag, EVP_CIPHER_CTX_buf_noconst(ctx), |
3515 | cctx->M)) | |
0f113f3e MC |
3516 | rv = len; |
3517 | } | |
3518 | } | |
3519 | if (rv == -1) | |
3520 | OPENSSL_cleanse(out, len); | |
3521 | cctx->iv_set = 0; | |
3522 | cctx->tag_set = 0; | |
3523 | cctx->len_set = 0; | |
3524 | return rv; | |
3525 | } | |
0f113f3e MC |
3526 | } |
3527 | ||
5158c763 | 3528 | #define aes_ccm_cleanup NULL |
0f113f3e | 3529 | |
e75c5a79 DSH |
3530 | BLOCK_CIPHER_custom(NID_aes, 128, 1, 12, ccm, CCM, |
3531 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) | |
3532 | BLOCK_CIPHER_custom(NID_aes, 192, 1, 12, ccm, CCM, | |
3533 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) | |
3534 | BLOCK_CIPHER_custom(NID_aes, 256, 1, 12, ccm, CCM, | |
3535 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) | |
0f113f3e MC |
3536 | |
3537 | typedef struct { | |
3538 | union { | |
39147079 | 3539 | OSSL_UNION_ALIGN; |
0f113f3e MC |
3540 | AES_KEY ks; |
3541 | } ks; | |
3542 | /* Indicates if IV has been set */ | |
3543 | unsigned char *iv; | |
3544 | } EVP_AES_WRAP_CTX; | |
97cf1f6c DSH |
3545 | |
3546 | static int aes_wrap_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
3547 | const unsigned char *iv, int enc) |
3548 | { | |
6435f0f6 | 3549 | EVP_AES_WRAP_CTX *wctx = EVP_C_DATA(EVP_AES_WRAP_CTX,ctx); |
0f113f3e MC |
3550 | if (!iv && !key) |
3551 | return 1; | |
3552 | if (key) { | |
6435f0f6 RL |
3553 | if (EVP_CIPHER_CTX_encrypting(ctx)) |
3554 | AES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, | |
3555 | &wctx->ks.ks); | |
0f113f3e | 3556 | else |
6435f0f6 RL |
3557 | AES_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, |
3558 | &wctx->ks.ks); | |
0f113f3e MC |
3559 | if (!iv) |
3560 | wctx->iv = NULL; | |
3561 | } | |
3562 | if (iv) { | |
6435f0f6 RL |
3563 | memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, EVP_CIPHER_CTX_iv_length(ctx)); |
3564 | wctx->iv = EVP_CIPHER_CTX_iv_noconst(ctx); | |
0f113f3e MC |
3565 | } |
3566 | return 1; | |
3567 | } | |
97cf1f6c DSH |
3568 | |
3569 | static int aes_wrap_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
0f113f3e MC |
3570 | const unsigned char *in, size_t inlen) |
3571 | { | |
6435f0f6 | 3572 | EVP_AES_WRAP_CTX *wctx = EVP_C_DATA(EVP_AES_WRAP_CTX,ctx); |
0f113f3e MC |
3573 | size_t rv; |
3574 | /* AES wrap with padding has IV length of 4, without padding 8 */ | |
3575 | int pad = EVP_CIPHER_CTX_iv_length(ctx) == 4; | |
3576 | /* No final operation so always return zero length */ | |
3577 | if (!in) | |
3578 | return 0; | |
3579 | /* Input length must always be non-zero */ | |
3580 | if (!inlen) | |
3581 | return -1; | |
3582 | /* If decrypting need at least 16 bytes and multiple of 8 */ | |
6435f0f6 | 3583 | if (!EVP_CIPHER_CTX_encrypting(ctx) && (inlen < 16 || inlen & 0x7)) |
0f113f3e MC |
3584 | return -1; |
3585 | /* If not padding input must be multiple of 8 */ | |
3586 | if (!pad && inlen & 0x7) | |
3587 | return -1; | |
7141ba31 MC |
3588 | if (is_partially_overlapping(out, in, inlen)) { |
3589 | EVPerr(EVP_F_AES_WRAP_CIPHER, EVP_R_PARTIALLY_OVERLAPPING); | |
3590 | return 0; | |
3591 | } | |
0f113f3e | 3592 | if (!out) { |
6435f0f6 | 3593 | if (EVP_CIPHER_CTX_encrypting(ctx)) { |
0f113f3e MC |
3594 | /* If padding round up to multiple of 8 */ |
3595 | if (pad) | |
3596 | inlen = (inlen + 7) / 8 * 8; | |
3597 | /* 8 byte prefix */ | |
3598 | return inlen + 8; | |
3599 | } else { | |
3600 | /* | |
3601 | * If not padding output will be exactly 8 bytes smaller than | |
3602 | * input. If padding it will be at least 8 bytes smaller but we | |
3603 | * don't know how much. | |
3604 | */ | |
3605 | return inlen - 8; | |
3606 | } | |
3607 | } | |
3608 | if (pad) { | |
6435f0f6 | 3609 | if (EVP_CIPHER_CTX_encrypting(ctx)) |
0f113f3e MC |
3610 | rv = CRYPTO_128_wrap_pad(&wctx->ks.ks, wctx->iv, |
3611 | out, in, inlen, | |
3612 | (block128_f) AES_encrypt); | |
3613 | else | |
3614 | rv = CRYPTO_128_unwrap_pad(&wctx->ks.ks, wctx->iv, | |
3615 | out, in, inlen, | |
3616 | (block128_f) AES_decrypt); | |
3617 | } else { | |
6435f0f6 | 3618 | if (EVP_CIPHER_CTX_encrypting(ctx)) |
0f113f3e MC |
3619 | rv = CRYPTO_128_wrap(&wctx->ks.ks, wctx->iv, |
3620 | out, in, inlen, (block128_f) AES_encrypt); | |
3621 | else | |
3622 | rv = CRYPTO_128_unwrap(&wctx->ks.ks, wctx->iv, | |
3623 | out, in, inlen, (block128_f) AES_decrypt); | |
3624 | } | |
3625 | return rv ? (int)rv : -1; | |
3626 | } | |
3627 | ||
5158c763 | 3628 | #define WRAP_FLAGS (EVP_CIPH_WRAP_MODE \ |
0f113f3e MC |
3629 | | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \ |
3630 | | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_FLAG_DEFAULT_ASN1) | |
97cf1f6c DSH |
3631 | |
3632 | static const EVP_CIPHER aes_128_wrap = { | |
0f113f3e MC |
3633 | NID_id_aes128_wrap, |
3634 | 8, 16, 8, WRAP_FLAGS, | |
3635 | aes_wrap_init_key, aes_wrap_cipher, | |
3636 | NULL, | |
3637 | sizeof(EVP_AES_WRAP_CTX), | |
3638 | NULL, NULL, NULL, NULL | |
3639 | }; | |
97cf1f6c DSH |
3640 | |
3641 | const EVP_CIPHER *EVP_aes_128_wrap(void) | |
0f113f3e MC |
3642 | { |
3643 | return &aes_128_wrap; | |
3644 | } | |
97cf1f6c DSH |
3645 | |
3646 | static const EVP_CIPHER aes_192_wrap = { | |
0f113f3e MC |
3647 | NID_id_aes192_wrap, |
3648 | 8, 24, 8, WRAP_FLAGS, | |
3649 | aes_wrap_init_key, aes_wrap_cipher, | |
3650 | NULL, | |
3651 | sizeof(EVP_AES_WRAP_CTX), | |
3652 | NULL, NULL, NULL, NULL | |
3653 | }; | |
97cf1f6c DSH |
3654 | |
3655 | const EVP_CIPHER *EVP_aes_192_wrap(void) | |
0f113f3e MC |
3656 | { |
3657 | return &aes_192_wrap; | |
3658 | } | |
97cf1f6c DSH |
3659 | |
3660 | static const EVP_CIPHER aes_256_wrap = { | |
0f113f3e MC |
3661 | NID_id_aes256_wrap, |
3662 | 8, 32, 8, WRAP_FLAGS, | |
3663 | aes_wrap_init_key, aes_wrap_cipher, | |
3664 | NULL, | |
3665 | sizeof(EVP_AES_WRAP_CTX), | |
3666 | NULL, NULL, NULL, NULL | |
3667 | }; | |
97cf1f6c DSH |
3668 | |
3669 | const EVP_CIPHER *EVP_aes_256_wrap(void) | |
0f113f3e MC |
3670 | { |
3671 | return &aes_256_wrap; | |
3672 | } | |
97cf1f6c | 3673 | |
d31fed73 | 3674 | static const EVP_CIPHER aes_128_wrap_pad = { |
0f113f3e MC |
3675 | NID_id_aes128_wrap_pad, |
3676 | 8, 16, 4, WRAP_FLAGS, | |
3677 | aes_wrap_init_key, aes_wrap_cipher, | |
3678 | NULL, | |
3679 | sizeof(EVP_AES_WRAP_CTX), | |
3680 | NULL, NULL, NULL, NULL | |
3681 | }; | |
d31fed73 DSH |
3682 | |
3683 | const EVP_CIPHER *EVP_aes_128_wrap_pad(void) | |
0f113f3e MC |
3684 | { |
3685 | return &aes_128_wrap_pad; | |
3686 | } | |
d31fed73 DSH |
3687 | |
3688 | static const EVP_CIPHER aes_192_wrap_pad = { | |
0f113f3e MC |
3689 | NID_id_aes192_wrap_pad, |
3690 | 8, 24, 4, WRAP_FLAGS, | |
3691 | aes_wrap_init_key, aes_wrap_cipher, | |
3692 | NULL, | |
3693 | sizeof(EVP_AES_WRAP_CTX), | |
3694 | NULL, NULL, NULL, NULL | |
3695 | }; | |
d31fed73 DSH |
3696 | |
3697 | const EVP_CIPHER *EVP_aes_192_wrap_pad(void) | |
0f113f3e MC |
3698 | { |
3699 | return &aes_192_wrap_pad; | |
3700 | } | |
d31fed73 DSH |
3701 | |
3702 | static const EVP_CIPHER aes_256_wrap_pad = { | |
0f113f3e MC |
3703 | NID_id_aes256_wrap_pad, |
3704 | 8, 32, 4, WRAP_FLAGS, | |
3705 | aes_wrap_init_key, aes_wrap_cipher, | |
3706 | NULL, | |
3707 | sizeof(EVP_AES_WRAP_CTX), | |
3708 | NULL, NULL, NULL, NULL | |
3709 | }; | |
d31fed73 DSH |
3710 | |
3711 | const EVP_CIPHER *EVP_aes_256_wrap_pad(void) | |
0f113f3e MC |
3712 | { |
3713 | return &aes_256_wrap_pad; | |
3714 | } | |
d31fed73 | 3715 | |
5158c763 | 3716 | #ifndef OPENSSL_NO_OCB |
e6b336ef | 3717 | static int aes_ocb_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) |
0f113f3e | 3718 | { |
6435f0f6 | 3719 | EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,c); |
0f113f3e MC |
3720 | EVP_CIPHER_CTX *newc; |
3721 | EVP_AES_OCB_CTX *new_octx; | |
3722 | ||
3723 | switch (type) { | |
3724 | case EVP_CTRL_INIT: | |
3725 | octx->key_set = 0; | |
3726 | octx->iv_set = 0; | |
7dddf2fc | 3727 | octx->ivlen = EVP_CIPHER_iv_length(c->cipher); |
6435f0f6 | 3728 | octx->iv = EVP_CIPHER_CTX_iv_noconst(c); |
0f113f3e MC |
3729 | octx->taglen = 16; |
3730 | octx->data_buf_len = 0; | |
3731 | octx->aad_buf_len = 0; | |
3732 | return 1; | |
3733 | ||
7dddf2fc SL |
3734 | case EVP_CTRL_GET_IVLEN: |
3735 | *(int *)ptr = octx->ivlen; | |
3736 | return 1; | |
3737 | ||
e640fa02 | 3738 | case EVP_CTRL_AEAD_SET_IVLEN: |
0f113f3e MC |
3739 | /* IV len must be 1 to 15 */ |
3740 | if (arg <= 0 || arg > 15) | |
3741 | return 0; | |
3742 | ||
3743 | octx->ivlen = arg; | |
3744 | return 1; | |
3745 | ||
e640fa02 | 3746 | case EVP_CTRL_AEAD_SET_TAG: |
12a765a5 | 3747 | if (ptr == NULL) { |
d57d135c MC |
3748 | /* Tag len must be 0 to 16 */ |
3749 | if (arg < 0 || arg > 16) | |
3750 | return 0; | |
3751 | ||
3752 | octx->taglen = arg; | |
3753 | return 1; | |
3754 | } | |
6435f0f6 | 3755 | if (arg != octx->taglen || EVP_CIPHER_CTX_encrypting(c)) |
0f113f3e MC |
3756 | return 0; |
3757 | memcpy(octx->tag, ptr, arg); | |
3758 | return 1; | |
3759 | ||
e640fa02 | 3760 | case EVP_CTRL_AEAD_GET_TAG: |
6435f0f6 | 3761 | if (arg != octx->taglen || !EVP_CIPHER_CTX_encrypting(c)) |
0f113f3e MC |
3762 | return 0; |
3763 | ||
3764 | memcpy(ptr, octx->tag, arg); | |
3765 | return 1; | |
3766 | ||
3767 | case EVP_CTRL_COPY: | |
3768 | newc = (EVP_CIPHER_CTX *)ptr; | |
6435f0f6 | 3769 | new_octx = EVP_C_DATA(EVP_AES_OCB_CTX,newc); |
0f113f3e | 3770 | return CRYPTO_ocb128_copy_ctx(&new_octx->ocb, &octx->ocb, |
bdc985b1 AP |
3771 | &new_octx->ksenc.ks, |
3772 | &new_octx->ksdec.ks); | |
0f113f3e MC |
3773 | |
3774 | default: | |
3775 | return -1; | |
3776 | ||
3777 | } | |
3778 | } | |
e6b336ef MC |
3779 | |
3780 | static int aes_ocb_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
0f113f3e MC |
3781 | const unsigned char *iv, int enc) |
3782 | { | |
6435f0f6 | 3783 | EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,ctx); |
0f113f3e MC |
3784 | if (!iv && !key) |
3785 | return 1; | |
3786 | if (key) { | |
3787 | do { | |
3788 | /* | |
3789 | * We set both the encrypt and decrypt key here because decrypt | |
3790 | * needs both. We could possibly optimise to remove setting the | |
3791 | * decrypt for an encryption operation. | |
3792 | */ | |
5158c763 | 3793 | # ifdef HWAES_CAPABLE |
02dc0b82 | 3794 | if (HWAES_CAPABLE) { |
6435f0f6 RL |
3795 | HWAES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, |
3796 | &octx->ksenc.ks); | |
3797 | HWAES_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, | |
3798 | &octx->ksdec.ks); | |
02dc0b82 AP |
3799 | if (!CRYPTO_ocb128_init(&octx->ocb, |
3800 | &octx->ksenc.ks, &octx->ksdec.ks, | |
3801 | (block128_f) HWAES_encrypt, | |
3802 | (block128_f) HWAES_decrypt, | |
3803 | enc ? HWAES_ocb_encrypt | |
3804 | : HWAES_ocb_decrypt)) | |
3805 | return 0; | |
3806 | break; | |
3807 | } | |
5158c763 MC |
3808 | # endif |
3809 | # ifdef VPAES_CAPABLE | |
0f113f3e | 3810 | if (VPAES_CAPABLE) { |
6435f0f6 RL |
3811 | vpaes_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, |
3812 | &octx->ksenc.ks); | |
3813 | vpaes_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, | |
3814 | &octx->ksdec.ks); | |
bdc985b1 AP |
3815 | if (!CRYPTO_ocb128_init(&octx->ocb, |
3816 | &octx->ksenc.ks, &octx->ksdec.ks, | |
3817 | (block128_f) vpaes_encrypt, | |
bd30091c AP |
3818 | (block128_f) vpaes_decrypt, |
3819 | NULL)) | |
0f113f3e MC |
3820 | return 0; |
3821 | break; | |
3822 | } | |
5158c763 | 3823 | # endif |
6435f0f6 RL |
3824 | AES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, |
3825 | &octx->ksenc.ks); | |
3826 | AES_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, | |
3827 | &octx->ksdec.ks); | |
bdc985b1 AP |
3828 | if (!CRYPTO_ocb128_init(&octx->ocb, |
3829 | &octx->ksenc.ks, &octx->ksdec.ks, | |
0f113f3e | 3830 | (block128_f) AES_encrypt, |
bd30091c AP |
3831 | (block128_f) AES_decrypt, |
3832 | NULL)) | |
0f113f3e MC |
3833 | return 0; |
3834 | } | |
3835 | while (0); | |
3836 | ||
3837 | /* | |
3838 | * If we have an iv we can set it directly, otherwise use saved IV. | |
3839 | */ | |
3840 | if (iv == NULL && octx->iv_set) | |
3841 | iv = octx->iv; | |
3842 | if (iv) { | |
3843 | if (CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen) | |
3844 | != 1) | |
3845 | return 0; | |
3846 | octx->iv_set = 1; | |
3847 | } | |
3848 | octx->key_set = 1; | |
3849 | } else { | |
3850 | /* If key set use IV, otherwise copy */ | |
3851 | if (octx->key_set) | |
3852 | CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen); | |
3853 | else | |
3854 | memcpy(octx->iv, iv, octx->ivlen); | |
3855 | octx->iv_set = 1; | |
3856 | } | |
3857 | return 1; | |
3858 | } | |
e6b336ef MC |
3859 | |
3860 | static int aes_ocb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
0f113f3e MC |
3861 | const unsigned char *in, size_t len) |
3862 | { | |
3863 | unsigned char *buf; | |
3864 | int *buf_len; | |
3865 | int written_len = 0; | |
3866 | size_t trailing_len; | |
6435f0f6 | 3867 | EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,ctx); |
0f113f3e MC |
3868 | |
3869 | /* If IV or Key not set then return error */ | |
3870 | if (!octx->iv_set) | |
3871 | return -1; | |
3872 | ||
3873 | if (!octx->key_set) | |
3874 | return -1; | |
3875 | ||
0ba5a9ea | 3876 | if (in != NULL) { |
0f113f3e MC |
3877 | /* |
3878 | * Need to ensure we are only passing full blocks to low level OCB | |
3879 | * routines. We do it here rather than in EVP_EncryptUpdate/ | |
3880 | * EVP_DecryptUpdate because we need to pass full blocks of AAD too | |
3881 | * and those routines don't support that | |
3882 | */ | |
3883 | ||
3884 | /* Are we dealing with AAD or normal data here? */ | |
3885 | if (out == NULL) { | |
3886 | buf = octx->aad_buf; | |
3887 | buf_len = &(octx->aad_buf_len); | |
3888 | } else { | |
3889 | buf = octx->data_buf; | |
3890 | buf_len = &(octx->data_buf_len); | |
7141ba31 MC |
3891 | |
3892 | if (is_partially_overlapping(out + *buf_len, in, len)) { | |
3893 | EVPerr(EVP_F_AES_OCB_CIPHER, EVP_R_PARTIALLY_OVERLAPPING); | |
3894 | return 0; | |
3895 | } | |
0f113f3e MC |
3896 | } |
3897 | ||
3898 | /* | |
3899 | * If we've got a partially filled buffer from a previous call then | |
3900 | * use that data first | |
3901 | */ | |
0ba5a9ea | 3902 | if (*buf_len > 0) { |
0f113f3e MC |
3903 | unsigned int remaining; |
3904 | ||
0ba5a9ea | 3905 | remaining = AES_BLOCK_SIZE - (*buf_len); |
0f113f3e MC |
3906 | if (remaining > len) { |
3907 | memcpy(buf + (*buf_len), in, len); | |
3908 | *(buf_len) += len; | |
3909 | return 0; | |
3910 | } | |
3911 | memcpy(buf + (*buf_len), in, remaining); | |
3912 | ||
3913 | /* | |
3914 | * If we get here we've filled the buffer, so process it | |
3915 | */ | |
3916 | len -= remaining; | |
3917 | in += remaining; | |
3918 | if (out == NULL) { | |
0ba5a9ea | 3919 | if (!CRYPTO_ocb128_aad(&octx->ocb, buf, AES_BLOCK_SIZE)) |
0f113f3e | 3920 | return -1; |
6435f0f6 | 3921 | } else if (EVP_CIPHER_CTX_encrypting(ctx)) { |
0ba5a9ea MC |
3922 | if (!CRYPTO_ocb128_encrypt(&octx->ocb, buf, out, |
3923 | AES_BLOCK_SIZE)) | |
0f113f3e MC |
3924 | return -1; |
3925 | } else { | |
0ba5a9ea MC |
3926 | if (!CRYPTO_ocb128_decrypt(&octx->ocb, buf, out, |
3927 | AES_BLOCK_SIZE)) | |
0f113f3e MC |
3928 | return -1; |
3929 | } | |
0ba5a9ea | 3930 | written_len = AES_BLOCK_SIZE; |
0f113f3e | 3931 | *buf_len = 0; |
7c12c7b6 MC |
3932 | if (out != NULL) |
3933 | out += AES_BLOCK_SIZE; | |
0f113f3e MC |
3934 | } |
3935 | ||
3936 | /* Do we have a partial block to handle at the end? */ | |
0ba5a9ea | 3937 | trailing_len = len % AES_BLOCK_SIZE; |
0f113f3e MC |
3938 | |
3939 | /* | |
3940 | * If we've got some full blocks to handle, then process these first | |
3941 | */ | |
3942 | if (len != trailing_len) { | |
3943 | if (out == NULL) { | |
3944 | if (!CRYPTO_ocb128_aad(&octx->ocb, in, len - trailing_len)) | |
3945 | return -1; | |
6435f0f6 | 3946 | } else if (EVP_CIPHER_CTX_encrypting(ctx)) { |
0f113f3e MC |
3947 | if (!CRYPTO_ocb128_encrypt |
3948 | (&octx->ocb, in, out, len - trailing_len)) | |
3949 | return -1; | |
3950 | } else { | |
3951 | if (!CRYPTO_ocb128_decrypt | |
3952 | (&octx->ocb, in, out, len - trailing_len)) | |
3953 | return -1; | |
3954 | } | |
3955 | written_len += len - trailing_len; | |
3956 | in += len - trailing_len; | |
3957 | } | |
3958 | ||
3959 | /* Handle any trailing partial block */ | |
0ba5a9ea | 3960 | if (trailing_len > 0) { |
0f113f3e MC |
3961 | memcpy(buf, in, trailing_len); |
3962 | *buf_len = trailing_len; | |
3963 | } | |
3964 | ||
3965 | return written_len; | |
3966 | } else { | |
3967 | /* | |
3968 | * First of all empty the buffer of any partial block that we might | |
3969 | * have been provided - both for data and AAD | |
3970 | */ | |
0ba5a9ea | 3971 | if (octx->data_buf_len > 0) { |
6435f0f6 | 3972 | if (EVP_CIPHER_CTX_encrypting(ctx)) { |
0f113f3e MC |
3973 | if (!CRYPTO_ocb128_encrypt(&octx->ocb, octx->data_buf, out, |
3974 | octx->data_buf_len)) | |
3975 | return -1; | |
3976 | } else { | |
3977 | if (!CRYPTO_ocb128_decrypt(&octx->ocb, octx->data_buf, out, | |
3978 | octx->data_buf_len)) | |
3979 | return -1; | |
3980 | } | |
3981 | written_len = octx->data_buf_len; | |
3982 | octx->data_buf_len = 0; | |
3983 | } | |
0ba5a9ea | 3984 | if (octx->aad_buf_len > 0) { |
0f113f3e MC |
3985 | if (!CRYPTO_ocb128_aad |
3986 | (&octx->ocb, octx->aad_buf, octx->aad_buf_len)) | |
3987 | return -1; | |
3988 | octx->aad_buf_len = 0; | |
3989 | } | |
3990 | /* If decrypting then verify */ | |
6435f0f6 | 3991 | if (!EVP_CIPHER_CTX_encrypting(ctx)) { |
0f113f3e MC |
3992 | if (octx->taglen < 0) |
3993 | return -1; | |
3994 | if (CRYPTO_ocb128_finish(&octx->ocb, | |
3995 | octx->tag, octx->taglen) != 0) | |
3996 | return -1; | |
3997 | octx->iv_set = 0; | |
3998 | return written_len; | |
3999 | } | |
4000 | /* If encrypting then just get the tag */ | |
4001 | if (CRYPTO_ocb128_tag(&octx->ocb, octx->tag, 16) != 1) | |
4002 | return -1; | |
4003 | /* Don't reuse the IV */ | |
4004 | octx->iv_set = 0; | |
4005 | return written_len; | |
4006 | } | |
4007 | } | |
e6b336ef MC |
4008 | |
4009 | static int aes_ocb_cleanup(EVP_CIPHER_CTX *c) | |
0f113f3e | 4010 | { |
6435f0f6 | 4011 | EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,c); |
0f113f3e MC |
4012 | CRYPTO_ocb128_cleanup(&octx->ocb); |
4013 | return 1; | |
4014 | } | |
e6b336ef | 4015 | |
c4aede20 MC |
4016 | BLOCK_CIPHER_custom(NID_aes, 128, 16, 12, ocb, OCB, |
4017 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) | |
4018 | BLOCK_CIPHER_custom(NID_aes, 192, 16, 12, ocb, OCB, | |
4019 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) | |
4020 | BLOCK_CIPHER_custom(NID_aes, 256, 16, 12, ocb, OCB, | |
4021 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) | |
5158c763 | 4022 | #endif /* OPENSSL_NO_OCB */ |
b1ceb439 TS |
4023 | |
4024 | /* AES-SIV mode */ | |
4025 | #ifndef OPENSSL_NO_SIV | |
4026 | ||
4027 | typedef SIV128_CONTEXT EVP_AES_SIV_CTX; | |
4028 | ||
4029 | #define aesni_siv_init_key aes_siv_init_key | |
4030 | static int aes_siv_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
4031 | const unsigned char *iv, int enc) | |
4032 | { | |
4033 | const EVP_CIPHER *ctr; | |
4034 | const EVP_CIPHER *cbc; | |
4035 | SIV128_CONTEXT *sctx = EVP_C_DATA(SIV128_CONTEXT, ctx); | |
4036 | int klen = EVP_CIPHER_CTX_key_length(ctx) / 2; | |
4037 | ||
4038 | if (key == NULL) | |
4039 | return 1; | |
4040 | ||
4041 | switch (klen) { | |
4042 | case 16: | |
4043 | cbc = EVP_aes_128_cbc(); | |
4044 | ctr = EVP_aes_128_ctr(); | |
4045 | break; | |
4046 | case 24: | |
4047 | cbc = EVP_aes_192_cbc(); | |
4048 | ctr = EVP_aes_192_ctr(); | |
4049 | break; | |
4050 | case 32: | |
4051 | cbc = EVP_aes_256_cbc(); | |
4052 | ctr = EVP_aes_256_ctr(); | |
4053 | break; | |
4054 | default: | |
4055 | return 0; | |
4056 | } | |
4057 | ||
4058 | /* klen is the length of the underlying cipher, not the input key, | |
4059 | which should be twice as long */ | |
4060 | return CRYPTO_siv128_init(sctx, key, klen, cbc, ctr); | |
4061 | } | |
4062 | ||
4063 | #define aesni_siv_cipher aes_siv_cipher | |
4064 | static int aes_siv_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
4065 | const unsigned char *in, size_t len) | |
4066 | { | |
4067 | SIV128_CONTEXT *sctx = EVP_C_DATA(SIV128_CONTEXT, ctx); | |
4068 | ||
4069 | /* EncryptFinal or DecryptFinal */ | |
4070 | if (in == NULL) | |
4071 | return CRYPTO_siv128_finish(sctx); | |
4072 | ||
4073 | /* Deal with associated data */ | |
4074 | if (out == NULL) | |
4075 | return CRYPTO_siv128_aad(sctx, in, len); | |
4076 | ||
4077 | if (EVP_CIPHER_CTX_encrypting(ctx)) | |
4078 | return CRYPTO_siv128_encrypt(sctx, in, out, len); | |
4079 | ||
4080 | return CRYPTO_siv128_decrypt(sctx, in, out, len); | |
4081 | } | |
4082 | ||
4083 | #define aesni_siv_cleanup aes_siv_cleanup | |
4084 | static int aes_siv_cleanup(EVP_CIPHER_CTX *c) | |
4085 | { | |
4086 | SIV128_CONTEXT *sctx = EVP_C_DATA(SIV128_CONTEXT, c); | |
4087 | ||
4088 | return CRYPTO_siv128_cleanup(sctx); | |
4089 | } | |
4090 | ||
4091 | ||
4092 | #define aesni_siv_ctrl aes_siv_ctrl | |
4093 | static int aes_siv_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) | |
4094 | { | |
4095 | SIV128_CONTEXT *sctx = EVP_C_DATA(SIV128_CONTEXT, c); | |
4096 | SIV128_CONTEXT *sctx_out; | |
4097 | ||
4098 | switch (type) { | |
4099 | case EVP_CTRL_INIT: | |
4100 | return CRYPTO_siv128_cleanup(sctx); | |
4101 | ||
4102 | case EVP_CTRL_SET_SPEED: | |
4103 | return CRYPTO_siv128_speed(sctx, arg); | |
4104 | ||
4105 | case EVP_CTRL_AEAD_SET_TAG: | |
4106 | if (!EVP_CIPHER_CTX_encrypting(c)) | |
4107 | return CRYPTO_siv128_set_tag(sctx, ptr, arg); | |
4108 | return 1; | |
4109 | ||
4110 | case EVP_CTRL_AEAD_GET_TAG: | |
4111 | if (!EVP_CIPHER_CTX_encrypting(c)) | |
4112 | return 0; | |
4113 | return CRYPTO_siv128_get_tag(sctx, ptr, arg); | |
4114 | ||
4115 | case EVP_CTRL_COPY: | |
4116 | sctx_out = EVP_C_DATA(SIV128_CONTEXT, (EVP_CIPHER_CTX*)ptr); | |
4117 | return CRYPTO_siv128_copy_ctx(sctx_out, sctx); | |
4118 | ||
4119 | default: | |
4120 | return -1; | |
4121 | ||
4122 | } | |
4123 | } | |
4124 | ||
4125 | #define SIV_FLAGS (EVP_CIPH_FLAG_AEAD_CIPHER | EVP_CIPH_FLAG_DEFAULT_ASN1 \ | |
4126 | | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \ | |
4127 | | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CUSTOM_COPY \ | |
4128 | | EVP_CIPH_CTRL_INIT) | |
4129 | ||
4130 | BLOCK_CIPHER_custom(NID_aes, 128, 1, 0, siv, SIV, SIV_FLAGS) | |
4131 | BLOCK_CIPHER_custom(NID_aes, 192, 1, 0, siv, SIV, SIV_FLAGS) | |
4132 | BLOCK_CIPHER_custom(NID_aes, 256, 1, 0, siv, SIV, SIV_FLAGS) | |
4133 | #endif |