e_aes.c revision 312826
1/* ==================================================================== 2 * Copyright (c) 2001-2011 The OpenSSL Project. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in 13 * the documentation and/or other materials provided with the 14 * distribution. 15 * 16 * 3. All advertising materials mentioning features or use of this 17 * software must display the following acknowledgment: 18 * "This product includes software developed by the OpenSSL Project 19 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 20 * 21 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 22 * endorse or promote products derived from this software without 23 * prior written permission. For written permission, please contact 24 * openssl-core@openssl.org. 25 * 26 * 5. Products derived from this software may not be called "OpenSSL" 27 * nor may "OpenSSL" appear in their names without prior written 28 * permission of the OpenSSL Project. 29 * 30 * 6. Redistributions of any form whatsoever must retain the following 31 * acknowledgment: 32 * "This product includes software developed by the OpenSSL Project 33 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 34 * 35 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 36 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 37 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 38 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 39 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 40 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 41 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 42 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 43 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 44 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 45 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 46 * OF THE POSSIBILITY OF SUCH DAMAGE. 47 * ==================================================================== 48 * 49 */ 50 51#include <openssl/opensslconf.h> 52#ifndef OPENSSL_NO_AES 53#include <openssl/crypto.h> 54# include <openssl/evp.h> 55# include <openssl/err.h> 56# include <string.h> 57# include <assert.h> 58# include <openssl/aes.h> 59# include "evp_locl.h" 60# include "modes_lcl.h" 61# include <openssl/rand.h> 62 63# undef EVP_CIPH_FLAG_FIPS 64# define EVP_CIPH_FLAG_FIPS 0 65 66typedef struct { 67 union { 68 double align; 69 AES_KEY ks; 70 } ks; 71 block128_f block; 72 union { 73 cbc128_f cbc; 74 ctr128_f ctr; 75 } stream; 76} EVP_AES_KEY; 77 78typedef struct { 79 union { 80 double align; 81 AES_KEY ks; 82 } ks; /* AES key schedule to use */ 83 int key_set; /* Set if key initialised */ 84 int iv_set; /* Set if an iv is set */ 85 GCM128_CONTEXT gcm; 86 unsigned char *iv; /* Temporary IV store */ 87 int ivlen; /* IV length */ 88 int taglen; 89 int iv_gen; /* It is OK to generate IVs */ 90 int tls_aad_len; /* TLS AAD length */ 91 ctr128_f ctr; 92} EVP_AES_GCM_CTX; 93 94typedef struct { 95 union { 96 double align; 97 AES_KEY ks; 98 } ks1, ks2; /* AES key schedules to use */ 99 XTS128_CONTEXT xts; 100 void (*stream) (const unsigned char *in, 101 unsigned char *out, size_t length, 102 const AES_KEY *key1, const AES_KEY *key2, 103 const unsigned char iv[16]); 104} EVP_AES_XTS_CTX; 105 106typedef struct { 107 union { 108 double align; 109 AES_KEY ks; 110 } ks; /* AES key schedule to use */ 111 int key_set; /* Set if key initialised */ 112 int iv_set; /* Set if an iv is set */ 113 int tag_set; /* Set if tag is valid */ 114 int len_set; /* Set if message length set */ 115 int L, M; /* L and M parameters from RFC3610 */ 116 CCM128_CONTEXT ccm; 117 ccm128_f str; 118} EVP_AES_CCM_CTX; 119 120# define MAXBITCHUNK ((size_t)1<<(sizeof(size_t)*8-4)) 121 122# ifdef VPAES_ASM 123int vpaes_set_encrypt_key(const unsigned char *userKey, int bits, 124 AES_KEY *key); 125int vpaes_set_decrypt_key(const unsigned char *userKey, int bits, 126 AES_KEY *key); 127 128void vpaes_encrypt(const unsigned char *in, unsigned char *out, 129 const AES_KEY *key); 130void vpaes_decrypt(const unsigned char *in, unsigned char *out, 131 const AES_KEY *key); 132 133void vpaes_cbc_encrypt(const unsigned char *in, 134 unsigned char *out, 135 size_t length, 136 const AES_KEY *key, unsigned char *ivec, int enc); 137# endif 138# ifdef BSAES_ASM 139void bsaes_cbc_encrypt(const unsigned char *in, unsigned char *out, 140 size_t length, const AES_KEY *key, 141 unsigned char ivec[16], int enc); 142void bsaes_ctr32_encrypt_blocks(const unsigned char *in, unsigned char *out, 143 size_t len, const AES_KEY *key, 144 const unsigned char ivec[16]); 145void bsaes_xts_encrypt(const unsigned char *inp, unsigned char *out, 146 size_t len, const AES_KEY *key1, 147 const AES_KEY *key2, const unsigned char iv[16]); 148void bsaes_xts_decrypt(const unsigned char *inp, unsigned char *out, 149 size_t len, const AES_KEY *key1, 150 const AES_KEY *key2, const unsigned char iv[16]); 151# endif 152# ifdef AES_CTR_ASM 153void AES_ctr32_encrypt(const unsigned char *in, unsigned char *out, 154 size_t blocks, const AES_KEY *key, 155 const unsigned char ivec[AES_BLOCK_SIZE]); 156# endif 157# ifdef AES_XTS_ASM 158void AES_xts_encrypt(const unsigned char *inp, unsigned char *out, size_t len, 159 const AES_KEY *key1, const AES_KEY *key2, 160 const unsigned char iv[16]); 161void AES_xts_decrypt(const unsigned char *inp, unsigned char *out, size_t len, 162 const AES_KEY *key1, const AES_KEY *key2, 163 const unsigned char iv[16]); 164# endif 165 166# if defined(OPENSSL_CPUID_OBJ) && (defined(__powerpc__) || defined(__ppc__) || defined(_ARCH_PPC)) 167# include "ppc_arch.h" 168# ifdef VPAES_ASM 169# define VPAES_CAPABLE (OPENSSL_ppccap_P & PPC_ALTIVEC) 170# endif 171# define HWAES_CAPABLE (OPENSSL_ppccap_P & PPC_CRYPTO207) 172# define HWAES_set_encrypt_key aes_p8_set_encrypt_key 173# define HWAES_set_decrypt_key aes_p8_set_decrypt_key 174# define HWAES_encrypt aes_p8_encrypt 175# define HWAES_decrypt aes_p8_decrypt 176# define HWAES_cbc_encrypt aes_p8_cbc_encrypt 177# define HWAES_ctr32_encrypt_blocks aes_p8_ctr32_encrypt_blocks 178# endif 179 180# if defined(AES_ASM) && !defined(I386_ONLY) && ( \ 181 ((defined(__i386) || defined(__i386__) || \ 182 defined(_M_IX86)) && defined(OPENSSL_IA32_SSE2))|| \ 183 defined(__x86_64) || defined(__x86_64__) || \ 184 defined(_M_AMD64) || defined(_M_X64) || \ 185 defined(__INTEL__) ) 186 187extern unsigned int OPENSSL_ia32cap_P[]; 188 189# ifdef VPAES_ASM 190# define VPAES_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(41-32))) 191# endif 192# ifdef BSAES_ASM 193# define BSAES_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(41-32))) 194# endif 195/* 196 * AES-NI section 197 */ 198# define AESNI_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(57-32))) 199 200int aesni_set_encrypt_key(const unsigned char *userKey, int bits, 201 AES_KEY *key); 202int aesni_set_decrypt_key(const unsigned char *userKey, int bits, 203 AES_KEY *key); 204 205void aesni_encrypt(const unsigned char *in, unsigned char *out, 206 const AES_KEY *key); 207void aesni_decrypt(const unsigned char *in, unsigned char *out, 208 const AES_KEY *key); 209 210void aesni_ecb_encrypt(const unsigned char *in, 211 unsigned char *out, 212 size_t length, const AES_KEY *key, int enc); 213void aesni_cbc_encrypt(const unsigned char *in, 214 unsigned char *out, 215 size_t length, 216 const AES_KEY *key, unsigned char *ivec, int enc); 217 218void aesni_ctr32_encrypt_blocks(const unsigned char *in, 219 unsigned char *out, 220 size_t blocks, 221 const void *key, const unsigned char *ivec); 222 223void aesni_xts_encrypt(const unsigned char *in, 224 unsigned char *out, 225 size_t length, 226 const AES_KEY *key1, const AES_KEY *key2, 227 const unsigned char iv[16]); 228 229void aesni_xts_decrypt(const unsigned char *in, 230 unsigned char *out, 231 size_t length, 232 const AES_KEY *key1, const AES_KEY *key2, 233 const unsigned char iv[16]); 234 235void aesni_ccm64_encrypt_blocks(const unsigned char *in, 236 unsigned char *out, 237 size_t blocks, 238 const void *key, 239 const unsigned char ivec[16], 240 unsigned char cmac[16]); 241 242void aesni_ccm64_decrypt_blocks(const unsigned char *in, 243 unsigned char *out, 244 size_t blocks, 245 const void *key, 246 const unsigned char ivec[16], 247 unsigned char cmac[16]); 248 249# if defined(__x86_64) || defined(__x86_64__) || defined(_M_AMD64) || defined(_M_X64) 250size_t aesni_gcm_encrypt(const unsigned char *in, 251 unsigned char *out, 252 size_t len, 253 const void *key, unsigned char ivec[16], u64 *Xi); 254# define AES_gcm_encrypt aesni_gcm_encrypt 255size_t aesni_gcm_decrypt(const unsigned char *in, 256 unsigned char *out, 257 size_t len, 258 const void *key, unsigned char ivec[16], u64 *Xi); 259# define AES_gcm_decrypt aesni_gcm_decrypt 260void gcm_ghash_avx(u64 Xi[2], const u128 Htable[16], const u8 *in, 261 size_t len); 262# define AES_GCM_ASM(gctx) (gctx->ctr==aesni_ctr32_encrypt_blocks && \ 263 gctx->gcm.ghash==gcm_ghash_avx) 264# define AES_GCM_ASM2(gctx) (gctx->gcm.block==(block128_f)aesni_encrypt && \ 265 gctx->gcm.ghash==gcm_ghash_avx) 266# undef AES_GCM_ASM2 /* minor size optimization */ 267# endif 268 269static int aesni_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 270 const unsigned char *iv, int enc) 271{ 272 int ret, mode; 273 EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; 274 275 mode = ctx->cipher->flags & EVP_CIPH_MODE; 276 if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE) 277 && !enc) { 278 ret = aesni_set_decrypt_key(key, ctx->key_len * 8, ctx->cipher_data); 279 dat->block = (block128_f) aesni_decrypt; 280 dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? 281 (cbc128_f) aesni_cbc_encrypt : NULL; 282 } else { 283 ret = aesni_set_encrypt_key(key, ctx->key_len * 8, ctx->cipher_data); 284 dat->block = (block128_f) aesni_encrypt; 285 if (mode == EVP_CIPH_CBC_MODE) 286 dat->stream.cbc = (cbc128_f) aesni_cbc_encrypt; 287 else if (mode == EVP_CIPH_CTR_MODE) 288 dat->stream.ctr = (ctr128_f) aesni_ctr32_encrypt_blocks; 289 else 290 dat->stream.cbc = NULL; 291 } 292 293 if (ret < 0) { 294 EVPerr(EVP_F_AESNI_INIT_KEY, EVP_R_AES_KEY_SETUP_FAILED); 295 return 0; 296 } 297 298 return 1; 299} 300 301static int aesni_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 302 const unsigned char *in, size_t len) 303{ 304 aesni_cbc_encrypt(in, out, len, ctx->cipher_data, ctx->iv, ctx->encrypt); 305 306 return 1; 307} 308 309static int aesni_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 310 const unsigned char *in, size_t len) 311{ 312 size_t bl = ctx->cipher->block_size; 313 314 if (len < bl) 315 return 1; 316 317 aesni_ecb_encrypt(in, out, len, ctx->cipher_data, ctx->encrypt); 318 319 return 1; 320} 321 322# define aesni_ofb_cipher aes_ofb_cipher 323static int aesni_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 324 const unsigned char *in, size_t len); 325 326# define aesni_cfb_cipher aes_cfb_cipher 327static int aesni_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 328 const unsigned char *in, size_t len); 329 330# define aesni_cfb8_cipher aes_cfb8_cipher 331static int aesni_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 332 const unsigned char *in, size_t len); 333 334# define aesni_cfb1_cipher aes_cfb1_cipher 335static int aesni_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 336 const unsigned char *in, size_t len); 337 338# define aesni_ctr_cipher aes_ctr_cipher 339static int aesni_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 340 const unsigned char *in, size_t len); 341 342static int aesni_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 343 const unsigned char *iv, int enc) 344{ 345 EVP_AES_GCM_CTX *gctx = ctx->cipher_data; 346 if (!iv && !key) 347 return 1; 348 if (key) { 349 aesni_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks); 350 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f) aesni_encrypt); 351 gctx->ctr = (ctr128_f) aesni_ctr32_encrypt_blocks; 352 /* 353 * If we have an iv can set it directly, otherwise use saved IV. 354 */ 355 if (iv == NULL && gctx->iv_set) 356 iv = gctx->iv; 357 if (iv) { 358 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); 359 gctx->iv_set = 1; 360 } 361 gctx->key_set = 1; 362 } else { 363 /* If key set use IV, otherwise copy */ 364 if (gctx->key_set) 365 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); 366 else 367 memcpy(gctx->iv, iv, gctx->ivlen); 368 gctx->iv_set = 1; 369 gctx->iv_gen = 0; 370 } 371 return 1; 372} 373 374# define aesni_gcm_cipher aes_gcm_cipher 375static int aesni_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 376 const unsigned char *in, size_t len); 377 378static int aesni_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 379 const unsigned char *iv, int enc) 380{ 381 EVP_AES_XTS_CTX *xctx = ctx->cipher_data; 382 if (!iv && !key) 383 return 1; 384 385 if (key) { 386 /* key_len is two AES keys */ 387 if (enc) { 388 aesni_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks); 389 xctx->xts.block1 = (block128_f) aesni_encrypt; 390 xctx->stream = aesni_xts_encrypt; 391 } else { 392 aesni_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks); 393 xctx->xts.block1 = (block128_f) aesni_decrypt; 394 xctx->stream = aesni_xts_decrypt; 395 } 396 397 aesni_set_encrypt_key(key + ctx->key_len / 2, 398 ctx->key_len * 4, &xctx->ks2.ks); 399 xctx->xts.block2 = (block128_f) aesni_encrypt; 400 401 xctx->xts.key1 = &xctx->ks1; 402 } 403 404 if (iv) { 405 xctx->xts.key2 = &xctx->ks2; 406 memcpy(ctx->iv, iv, 16); 407 } 408 409 return 1; 410} 411 412# define aesni_xts_cipher aes_xts_cipher 413static int aesni_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 414 const unsigned char *in, size_t len); 415 416static int aesni_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 417 const unsigned char *iv, int enc) 418{ 419 EVP_AES_CCM_CTX *cctx = ctx->cipher_data; 420 if (!iv && !key) 421 return 1; 422 if (key) { 423 aesni_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks.ks); 424 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, 425 &cctx->ks, (block128_f) aesni_encrypt); 426 cctx->str = enc ? (ccm128_f) aesni_ccm64_encrypt_blocks : 427 (ccm128_f) aesni_ccm64_decrypt_blocks; 428 cctx->key_set = 1; 429 } 430 if (iv) { 431 memcpy(ctx->iv, iv, 15 - cctx->L); 432 cctx->iv_set = 1; 433 } 434 return 1; 435} 436 437# define aesni_ccm_cipher aes_ccm_cipher 438static int aesni_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 439 const unsigned char *in, size_t len); 440 441# define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \ 442static const EVP_CIPHER aesni_##keylen##_##mode = { \ 443 nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \ 444 flags|EVP_CIPH_##MODE##_MODE, \ 445 aesni_init_key, \ 446 aesni_##mode##_cipher, \ 447 NULL, \ 448 sizeof(EVP_AES_KEY), \ 449 NULL,NULL,NULL,NULL }; \ 450static const EVP_CIPHER aes_##keylen##_##mode = { \ 451 nid##_##keylen##_##nmode,blocksize, \ 452 keylen/8,ivlen, \ 453 flags|EVP_CIPH_##MODE##_MODE, \ 454 aes_init_key, \ 455 aes_##mode##_cipher, \ 456 NULL, \ 457 sizeof(EVP_AES_KEY), \ 458 NULL,NULL,NULL,NULL }; \ 459const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ 460{ return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; } 461 462# define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \ 463static const EVP_CIPHER aesni_##keylen##_##mode = { \ 464 nid##_##keylen##_##mode,blocksize, \ 465 (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \ 466 flags|EVP_CIPH_##MODE##_MODE, \ 467 aesni_##mode##_init_key, \ 468 aesni_##mode##_cipher, \ 469 aes_##mode##_cleanup, \ 470 sizeof(EVP_AES_##MODE##_CTX), \ 471 NULL,NULL,aes_##mode##_ctrl,NULL }; \ 472static const EVP_CIPHER aes_##keylen##_##mode = { \ 473 nid##_##keylen##_##mode,blocksize, \ 474 (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \ 475 flags|EVP_CIPH_##MODE##_MODE, \ 476 aes_##mode##_init_key, \ 477 aes_##mode##_cipher, \ 478 aes_##mode##_cleanup, \ 479 sizeof(EVP_AES_##MODE##_CTX), \ 480 NULL,NULL,aes_##mode##_ctrl,NULL }; \ 481const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ 482{ return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; } 483 484# elif defined(AES_ASM) && (defined(__sparc) || defined(__sparc__)) 485 486# include "sparc_arch.h" 487 488extern unsigned int OPENSSL_sparcv9cap_P[]; 489 490# define SPARC_AES_CAPABLE (OPENSSL_sparcv9cap_P[1] & CFR_AES) 491 492void aes_t4_set_encrypt_key(const unsigned char *key, int bits, AES_KEY *ks); 493void aes_t4_set_decrypt_key(const unsigned char *key, int bits, AES_KEY *ks); 494void aes_t4_encrypt(const unsigned char *in, unsigned char *out, 495 const AES_KEY *key); 496void aes_t4_decrypt(const unsigned char *in, unsigned char *out, 497 const AES_KEY *key); 498/* 499 * Key-length specific subroutines were chosen for following reason. 500 * Each SPARC T4 core can execute up to 8 threads which share core's 501 * resources. Loading as much key material to registers allows to 502 * minimize references to shared memory interface, as well as amount 503 * of instructions in inner loops [much needed on T4]. But then having 504 * non-key-length specific routines would require conditional branches 505 * either in inner loops or on subroutines' entries. Former is hardly 506 * acceptable, while latter means code size increase to size occupied 507 * by multiple key-length specfic subroutines, so why fight? 508 */ 509void aes128_t4_cbc_encrypt(const unsigned char *in, unsigned char *out, 510 size_t len, const AES_KEY *key, 511 unsigned char *ivec); 512void aes128_t4_cbc_decrypt(const unsigned char *in, unsigned char *out, 513 size_t len, const AES_KEY *key, 514 unsigned char *ivec); 515void aes192_t4_cbc_encrypt(const unsigned char *in, unsigned char *out, 516 size_t len, const AES_KEY *key, 517 unsigned char *ivec); 518void aes192_t4_cbc_decrypt(const unsigned char *in, unsigned char *out, 519 size_t len, const AES_KEY *key, 520 unsigned char *ivec); 521void aes256_t4_cbc_encrypt(const unsigned char *in, unsigned char *out, 522 size_t len, const AES_KEY *key, 523 unsigned char *ivec); 524void aes256_t4_cbc_decrypt(const unsigned char *in, unsigned char *out, 525 size_t len, const AES_KEY *key, 526 unsigned char *ivec); 527void aes128_t4_ctr32_encrypt(const unsigned char *in, unsigned char *out, 528 size_t blocks, const AES_KEY *key, 529 unsigned char *ivec); 530void aes192_t4_ctr32_encrypt(const unsigned char *in, unsigned char *out, 531 size_t blocks, const AES_KEY *key, 532 unsigned char *ivec); 533void aes256_t4_ctr32_encrypt(const unsigned char *in, unsigned char *out, 534 size_t blocks, const AES_KEY *key, 535 unsigned char *ivec); 536void aes128_t4_xts_encrypt(const unsigned char *in, unsigned char *out, 537 size_t blocks, const AES_KEY *key1, 538 const AES_KEY *key2, const unsigned char *ivec); 539void aes128_t4_xts_decrypt(const unsigned char *in, unsigned char *out, 540 size_t blocks, const AES_KEY *key1, 541 const AES_KEY *key2, const unsigned char *ivec); 542void aes256_t4_xts_encrypt(const unsigned char *in, unsigned char *out, 543 size_t blocks, const AES_KEY *key1, 544 const AES_KEY *key2, const unsigned char *ivec); 545void aes256_t4_xts_decrypt(const unsigned char *in, unsigned char *out, 546 size_t blocks, const AES_KEY *key1, 547 const AES_KEY *key2, const unsigned char *ivec); 548 549static int aes_t4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 550 const unsigned char *iv, int enc) 551{ 552 int ret, mode, bits; 553 EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; 554 555 mode = ctx->cipher->flags & EVP_CIPH_MODE; 556 bits = ctx->key_len * 8; 557 if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE) 558 && !enc) { 559 ret = 0; 560 aes_t4_set_decrypt_key(key, bits, ctx->cipher_data); 561 dat->block = (block128_f) aes_t4_decrypt; 562 switch (bits) { 563 case 128: 564 dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? 565 (cbc128_f) aes128_t4_cbc_decrypt : NULL; 566 break; 567 case 192: 568 dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? 569 (cbc128_f) aes192_t4_cbc_decrypt : NULL; 570 break; 571 case 256: 572 dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? 573 (cbc128_f) aes256_t4_cbc_decrypt : NULL; 574 break; 575 default: 576 ret = -1; 577 } 578 } else { 579 ret = 0; 580 aes_t4_set_encrypt_key(key, bits, ctx->cipher_data); 581 dat->block = (block128_f) aes_t4_encrypt; 582 switch (bits) { 583 case 128: 584 if (mode == EVP_CIPH_CBC_MODE) 585 dat->stream.cbc = (cbc128_f) aes128_t4_cbc_encrypt; 586 else if (mode == EVP_CIPH_CTR_MODE) 587 dat->stream.ctr = (ctr128_f) aes128_t4_ctr32_encrypt; 588 else 589 dat->stream.cbc = NULL; 590 break; 591 case 192: 592 if (mode == EVP_CIPH_CBC_MODE) 593 dat->stream.cbc = (cbc128_f) aes192_t4_cbc_encrypt; 594 else if (mode == EVP_CIPH_CTR_MODE) 595 dat->stream.ctr = (ctr128_f) aes192_t4_ctr32_encrypt; 596 else 597 dat->stream.cbc = NULL; 598 break; 599 case 256: 600 if (mode == EVP_CIPH_CBC_MODE) 601 dat->stream.cbc = (cbc128_f) aes256_t4_cbc_encrypt; 602 else if (mode == EVP_CIPH_CTR_MODE) 603 dat->stream.ctr = (ctr128_f) aes256_t4_ctr32_encrypt; 604 else 605 dat->stream.cbc = NULL; 606 break; 607 default: 608 ret = -1; 609 } 610 } 611 612 if (ret < 0) { 613 EVPerr(EVP_F_AES_T4_INIT_KEY, EVP_R_AES_KEY_SETUP_FAILED); 614 return 0; 615 } 616 617 return 1; 618} 619 620# define aes_t4_cbc_cipher aes_cbc_cipher 621static int aes_t4_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 622 const unsigned char *in, size_t len); 623 624# define aes_t4_ecb_cipher aes_ecb_cipher 625static int aes_t4_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 626 const unsigned char *in, size_t len); 627 628# define aes_t4_ofb_cipher aes_ofb_cipher 629static int aes_t4_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 630 const unsigned char *in, size_t len); 631 632# define aes_t4_cfb_cipher aes_cfb_cipher 633static int aes_t4_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 634 const unsigned char *in, size_t len); 635 636# define aes_t4_cfb8_cipher aes_cfb8_cipher 637static int aes_t4_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 638 const unsigned char *in, size_t len); 639 640# define aes_t4_cfb1_cipher aes_cfb1_cipher 641static int aes_t4_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 642 const unsigned char *in, size_t len); 643 644# define aes_t4_ctr_cipher aes_ctr_cipher 645static int aes_t4_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 646 const unsigned char *in, size_t len); 647 648static int aes_t4_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 649 const unsigned char *iv, int enc) 650{ 651 EVP_AES_GCM_CTX *gctx = ctx->cipher_data; 652 if (!iv && !key) 653 return 1; 654 if (key) { 655 int bits = ctx->key_len * 8; 656 aes_t4_set_encrypt_key(key, bits, &gctx->ks.ks); 657 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, 658 (block128_f) aes_t4_encrypt); 659 switch (bits) { 660 case 128: 661 gctx->ctr = (ctr128_f) aes128_t4_ctr32_encrypt; 662 break; 663 case 192: 664 gctx->ctr = (ctr128_f) aes192_t4_ctr32_encrypt; 665 break; 666 case 256: 667 gctx->ctr = (ctr128_f) aes256_t4_ctr32_encrypt; 668 break; 669 default: 670 return 0; 671 } 672 /* 673 * If we have an iv can set it directly, otherwise use saved IV. 674 */ 675 if (iv == NULL && gctx->iv_set) 676 iv = gctx->iv; 677 if (iv) { 678 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); 679 gctx->iv_set = 1; 680 } 681 gctx->key_set = 1; 682 } else { 683 /* If key set use IV, otherwise copy */ 684 if (gctx->key_set) 685 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); 686 else 687 memcpy(gctx->iv, iv, gctx->ivlen); 688 gctx->iv_set = 1; 689 gctx->iv_gen = 0; 690 } 691 return 1; 692} 693 694# define aes_t4_gcm_cipher aes_gcm_cipher 695static int aes_t4_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 696 const unsigned char *in, size_t len); 697 698static int aes_t4_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 699 const unsigned char *iv, int enc) 700{ 701 EVP_AES_XTS_CTX *xctx = ctx->cipher_data; 702 if (!iv && !key) 703 return 1; 704 705 if (key) { 706 int bits = ctx->key_len * 4; 707 xctx->stream = NULL; 708 /* key_len is two AES keys */ 709 if (enc) { 710 aes_t4_set_encrypt_key(key, bits, &xctx->ks1.ks); 711 xctx->xts.block1 = (block128_f) aes_t4_encrypt; 712 switch (bits) { 713 case 128: 714 xctx->stream = aes128_t4_xts_encrypt; 715 break; 716# if 0 /* not yet */ 717 case 192: 718 xctx->stream = aes192_t4_xts_encrypt; 719 break; 720# endif 721 case 256: 722 xctx->stream = aes256_t4_xts_encrypt; 723 break; 724 default: 725 return 0; 726 } 727 } else { 728 aes_t4_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks); 729 xctx->xts.block1 = (block128_f) aes_t4_decrypt; 730 switch (bits) { 731 case 128: 732 xctx->stream = aes128_t4_xts_decrypt; 733 break; 734# if 0 /* not yet */ 735 case 192: 736 xctx->stream = aes192_t4_xts_decrypt; 737 break; 738# endif 739 case 256: 740 xctx->stream = aes256_t4_xts_decrypt; 741 break; 742 default: 743 return 0; 744 } 745 } 746 747 aes_t4_set_encrypt_key(key + ctx->key_len / 2, 748 ctx->key_len * 4, &xctx->ks2.ks); 749 xctx->xts.block2 = (block128_f) aes_t4_encrypt; 750 751 xctx->xts.key1 = &xctx->ks1; 752 } 753 754 if (iv) { 755 xctx->xts.key2 = &xctx->ks2; 756 memcpy(ctx->iv, iv, 16); 757 } 758 759 return 1; 760} 761 762# define aes_t4_xts_cipher aes_xts_cipher 763static int aes_t4_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 764 const unsigned char *in, size_t len); 765 766static int aes_t4_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 767 const unsigned char *iv, int enc) 768{ 769 EVP_AES_CCM_CTX *cctx = ctx->cipher_data; 770 if (!iv && !key) 771 return 1; 772 if (key) { 773 int bits = ctx->key_len * 8; 774 aes_t4_set_encrypt_key(key, bits, &cctx->ks.ks); 775 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, 776 &cctx->ks, (block128_f) aes_t4_encrypt); 777# if 0 /* not yet */ 778 switch (bits) { 779 case 128: 780 cctx->str = enc ? (ccm128_f) aes128_t4_ccm64_encrypt : 781 (ccm128_f) ae128_t4_ccm64_decrypt; 782 break; 783 case 192: 784 cctx->str = enc ? (ccm128_f) aes192_t4_ccm64_encrypt : 785 (ccm128_f) ae192_t4_ccm64_decrypt; 786 break; 787 case 256: 788 cctx->str = enc ? (ccm128_f) aes256_t4_ccm64_encrypt : 789 (ccm128_f) ae256_t4_ccm64_decrypt; 790 break; 791 default: 792 return 0; 793 } 794# else 795 cctx->str = NULL; 796# endif 797 cctx->key_set = 1; 798 } 799 if (iv) { 800 memcpy(ctx->iv, iv, 15 - cctx->L); 801 cctx->iv_set = 1; 802 } 803 return 1; 804} 805 806# define aes_t4_ccm_cipher aes_ccm_cipher 807static int aes_t4_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 808 const unsigned char *in, size_t len); 809 810# define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \ 811static const EVP_CIPHER aes_t4_##keylen##_##mode = { \ 812 nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \ 813 flags|EVP_CIPH_##MODE##_MODE, \ 814 aes_t4_init_key, \ 815 aes_t4_##mode##_cipher, \ 816 NULL, \ 817 sizeof(EVP_AES_KEY), \ 818 NULL,NULL,NULL,NULL }; \ 819static const EVP_CIPHER aes_##keylen##_##mode = { \ 820 nid##_##keylen##_##nmode,blocksize, \ 821 keylen/8,ivlen, \ 822 flags|EVP_CIPH_##MODE##_MODE, \ 823 aes_init_key, \ 824 aes_##mode##_cipher, \ 825 NULL, \ 826 sizeof(EVP_AES_KEY), \ 827 NULL,NULL,NULL,NULL }; \ 828const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ 829{ return SPARC_AES_CAPABLE?&aes_t4_##keylen##_##mode:&aes_##keylen##_##mode; } 830 831# define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \ 832static const EVP_CIPHER aes_t4_##keylen##_##mode = { \ 833 nid##_##keylen##_##mode,blocksize, \ 834 (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \ 835 flags|EVP_CIPH_##MODE##_MODE, \ 836 aes_t4_##mode##_init_key, \ 837 aes_t4_##mode##_cipher, \ 838 aes_##mode##_cleanup, \ 839 sizeof(EVP_AES_##MODE##_CTX), \ 840 NULL,NULL,aes_##mode##_ctrl,NULL }; \ 841static const EVP_CIPHER aes_##keylen##_##mode = { \ 842 nid##_##keylen##_##mode,blocksize, \ 843 (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \ 844 flags|EVP_CIPH_##MODE##_MODE, \ 845 aes_##mode##_init_key, \ 846 aes_##mode##_cipher, \ 847 aes_##mode##_cleanup, \ 848 sizeof(EVP_AES_##MODE##_CTX), \ 849 NULL,NULL,aes_##mode##_ctrl,NULL }; \ 850const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ 851{ return SPARC_AES_CAPABLE?&aes_t4_##keylen##_##mode:&aes_##keylen##_##mode; } 852 853# else 854 855# define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \ 856static const EVP_CIPHER aes_##keylen##_##mode = { \ 857 nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \ 858 flags|EVP_CIPH_##MODE##_MODE, \ 859 aes_init_key, \ 860 aes_##mode##_cipher, \ 861 NULL, \ 862 sizeof(EVP_AES_KEY), \ 863 NULL,NULL,NULL,NULL }; \ 864const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ 865{ return &aes_##keylen##_##mode; } 866 867# define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \ 868static const EVP_CIPHER aes_##keylen##_##mode = { \ 869 nid##_##keylen##_##mode,blocksize, \ 870 (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \ 871 flags|EVP_CIPH_##MODE##_MODE, \ 872 aes_##mode##_init_key, \ 873 aes_##mode##_cipher, \ 874 aes_##mode##_cleanup, \ 875 sizeof(EVP_AES_##MODE##_CTX), \ 876 NULL,NULL,aes_##mode##_ctrl,NULL }; \ 877const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ 878{ return &aes_##keylen##_##mode; } 879# endif 880 881# if defined(OPENSSL_CPUID_OBJ) && (defined(__arm__) || defined(__arm) || defined(__aarch64__)) 882# include "arm_arch.h" 883# if __ARM_MAX_ARCH__>=7 884# if defined(BSAES_ASM) 885# define BSAES_CAPABLE (OPENSSL_armcap_P & ARMV7_NEON) 886# endif 887# define HWAES_CAPABLE (OPENSSL_armcap_P & ARMV8_AES) 888# define HWAES_set_encrypt_key aes_v8_set_encrypt_key 889# define HWAES_set_decrypt_key aes_v8_set_decrypt_key 890# define HWAES_encrypt aes_v8_encrypt 891# define HWAES_decrypt aes_v8_decrypt 892# define HWAES_cbc_encrypt aes_v8_cbc_encrypt 893# define HWAES_ctr32_encrypt_blocks aes_v8_ctr32_encrypt_blocks 894# endif 895# endif 896 897# if defined(HWAES_CAPABLE) 898int HWAES_set_encrypt_key(const unsigned char *userKey, const int bits, 899 AES_KEY *key); 900int HWAES_set_decrypt_key(const unsigned char *userKey, const int bits, 901 AES_KEY *key); 902void HWAES_encrypt(const unsigned char *in, unsigned char *out, 903 const AES_KEY *key); 904void HWAES_decrypt(const unsigned char *in, unsigned char *out, 905 const AES_KEY *key); 906void HWAES_cbc_encrypt(const unsigned char *in, unsigned char *out, 907 size_t length, const AES_KEY *key, 908 unsigned char *ivec, const int enc); 909void HWAES_ctr32_encrypt_blocks(const unsigned char *in, unsigned char *out, 910 size_t len, const AES_KEY *key, 911 const unsigned char ivec[16]); 912# endif 913 914# define BLOCK_CIPHER_generic_pack(nid,keylen,flags) \ 915 BLOCK_CIPHER_generic(nid,keylen,16,16,cbc,cbc,CBC,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \ 916 BLOCK_CIPHER_generic(nid,keylen,16,0,ecb,ecb,ECB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \ 917 BLOCK_CIPHER_generic(nid,keylen,1,16,ofb128,ofb,OFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \ 918 BLOCK_CIPHER_generic(nid,keylen,1,16,cfb128,cfb,CFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \ 919 BLOCK_CIPHER_generic(nid,keylen,1,16,cfb1,cfb1,CFB,flags) \ 920 BLOCK_CIPHER_generic(nid,keylen,1,16,cfb8,cfb8,CFB,flags) \ 921 BLOCK_CIPHER_generic(nid,keylen,1,16,ctr,ctr,CTR,flags) 922 923static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 924 const unsigned char *iv, int enc) 925{ 926 int ret, mode; 927 EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; 928 929 mode = ctx->cipher->flags & EVP_CIPH_MODE; 930 if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE) 931 && !enc) 932# ifdef HWAES_CAPABLE 933 if (HWAES_CAPABLE) { 934 ret = HWAES_set_decrypt_key(key, ctx->key_len * 8, &dat->ks.ks); 935 dat->block = (block128_f) HWAES_decrypt; 936 dat->stream.cbc = NULL; 937# ifdef HWAES_cbc_encrypt 938 if (mode == EVP_CIPH_CBC_MODE) 939 dat->stream.cbc = (cbc128_f) HWAES_cbc_encrypt; 940# endif 941 } else 942# endif 943# ifdef BSAES_CAPABLE 944 if (BSAES_CAPABLE && mode == EVP_CIPH_CBC_MODE) { 945 ret = AES_set_decrypt_key(key, ctx->key_len * 8, &dat->ks.ks); 946 dat->block = (block128_f) AES_decrypt; 947 dat->stream.cbc = (cbc128_f) bsaes_cbc_encrypt; 948 } else 949# endif 950# ifdef VPAES_CAPABLE 951 if (VPAES_CAPABLE) { 952 ret = vpaes_set_decrypt_key(key, ctx->key_len * 8, &dat->ks.ks); 953 dat->block = (block128_f) vpaes_decrypt; 954 dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? 955 (cbc128_f) vpaes_cbc_encrypt : NULL; 956 } else 957# endif 958 { 959 ret = AES_set_decrypt_key(key, ctx->key_len * 8, &dat->ks.ks); 960 dat->block = (block128_f) AES_decrypt; 961 dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? 962 (cbc128_f) AES_cbc_encrypt : NULL; 963 } else 964# ifdef HWAES_CAPABLE 965 if (HWAES_CAPABLE) { 966 ret = HWAES_set_encrypt_key(key, ctx->key_len * 8, &dat->ks.ks); 967 dat->block = (block128_f) HWAES_encrypt; 968 dat->stream.cbc = NULL; 969# ifdef HWAES_cbc_encrypt 970 if (mode == EVP_CIPH_CBC_MODE) 971 dat->stream.cbc = (cbc128_f) HWAES_cbc_encrypt; 972 else 973# endif 974# ifdef HWAES_ctr32_encrypt_blocks 975 if (mode == EVP_CIPH_CTR_MODE) 976 dat->stream.ctr = (ctr128_f) HWAES_ctr32_encrypt_blocks; 977 else 978# endif 979 (void)0; /* terminate potentially open 'else' */ 980 } else 981# endif 982# ifdef BSAES_CAPABLE 983 if (BSAES_CAPABLE && mode == EVP_CIPH_CTR_MODE) { 984 ret = AES_set_encrypt_key(key, ctx->key_len * 8, &dat->ks.ks); 985 dat->block = (block128_f) AES_encrypt; 986 dat->stream.ctr = (ctr128_f) bsaes_ctr32_encrypt_blocks; 987 } else 988# endif 989# ifdef VPAES_CAPABLE 990 if (VPAES_CAPABLE) { 991 ret = vpaes_set_encrypt_key(key, ctx->key_len * 8, &dat->ks.ks); 992 dat->block = (block128_f) vpaes_encrypt; 993 dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? 994 (cbc128_f) vpaes_cbc_encrypt : NULL; 995 } else 996# endif 997 { 998 ret = AES_set_encrypt_key(key, ctx->key_len * 8, &dat->ks.ks); 999 dat->block = (block128_f) AES_encrypt; 1000 dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? 1001 (cbc128_f) AES_cbc_encrypt : NULL; 1002# ifdef AES_CTR_ASM 1003 if (mode == EVP_CIPH_CTR_MODE) 1004 dat->stream.ctr = (ctr128_f) AES_ctr32_encrypt; 1005# endif 1006 } 1007 1008 if (ret < 0) { 1009 EVPerr(EVP_F_AES_INIT_KEY, EVP_R_AES_KEY_SETUP_FAILED); 1010 return 0; 1011 } 1012 1013 return 1; 1014} 1015 1016static int aes_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 1017 const unsigned char *in, size_t len) 1018{ 1019 EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; 1020 1021 if (dat->stream.cbc) 1022 (*dat->stream.cbc) (in, out, len, &dat->ks, ctx->iv, ctx->encrypt); 1023 else if (ctx->encrypt) 1024 CRYPTO_cbc128_encrypt(in, out, len, &dat->ks, ctx->iv, dat->block); 1025 else 1026 CRYPTO_cbc128_decrypt(in, out, len, &dat->ks, ctx->iv, dat->block); 1027 1028 return 1; 1029} 1030 1031static int aes_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 1032 const unsigned char *in, size_t len) 1033{ 1034 size_t bl = ctx->cipher->block_size; 1035 size_t i; 1036 EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; 1037 1038 if (len < bl) 1039 return 1; 1040 1041 for (i = 0, len -= bl; i <= len; i += bl) 1042 (*dat->block) (in + i, out + i, &dat->ks); 1043 1044 return 1; 1045} 1046 1047static int aes_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 1048 const unsigned char *in, size_t len) 1049{ 1050 EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; 1051 1052 CRYPTO_ofb128_encrypt(in, out, len, &dat->ks, 1053 ctx->iv, &ctx->num, dat->block); 1054 return 1; 1055} 1056 1057static int aes_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 1058 const unsigned char *in, size_t len) 1059{ 1060 EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; 1061 1062 CRYPTO_cfb128_encrypt(in, out, len, &dat->ks, 1063 ctx->iv, &ctx->num, ctx->encrypt, dat->block); 1064 return 1; 1065} 1066 1067static int aes_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 1068 const unsigned char *in, size_t len) 1069{ 1070 EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; 1071 1072 CRYPTO_cfb128_8_encrypt(in, out, len, &dat->ks, 1073 ctx->iv, &ctx->num, ctx->encrypt, dat->block); 1074 return 1; 1075} 1076 1077static int aes_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 1078 const unsigned char *in, size_t len) 1079{ 1080 EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; 1081 1082 if (ctx->flags & EVP_CIPH_FLAG_LENGTH_BITS) { 1083 CRYPTO_cfb128_1_encrypt(in, out, len, &dat->ks, 1084 ctx->iv, &ctx->num, ctx->encrypt, dat->block); 1085 return 1; 1086 } 1087 1088 while (len >= MAXBITCHUNK) { 1089 CRYPTO_cfb128_1_encrypt(in, out, MAXBITCHUNK * 8, &dat->ks, 1090 ctx->iv, &ctx->num, ctx->encrypt, dat->block); 1091 len -= MAXBITCHUNK; 1092 } 1093 if (len) 1094 CRYPTO_cfb128_1_encrypt(in, out, len * 8, &dat->ks, 1095 ctx->iv, &ctx->num, ctx->encrypt, dat->block); 1096 1097 return 1; 1098} 1099 1100static int aes_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 1101 const unsigned char *in, size_t len) 1102{ 1103 unsigned int num = ctx->num; 1104 EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; 1105 1106 if (dat->stream.ctr) 1107 CRYPTO_ctr128_encrypt_ctr32(in, out, len, &dat->ks, 1108 ctx->iv, ctx->buf, &num, dat->stream.ctr); 1109 else 1110 CRYPTO_ctr128_encrypt(in, out, len, &dat->ks, 1111 ctx->iv, ctx->buf, &num, dat->block); 1112 ctx->num = (size_t)num; 1113 return 1; 1114} 1115 1116BLOCK_CIPHER_generic_pack(NID_aes, 128, EVP_CIPH_FLAG_FIPS) 1117 BLOCK_CIPHER_generic_pack(NID_aes, 192, EVP_CIPH_FLAG_FIPS) 1118 BLOCK_CIPHER_generic_pack(NID_aes, 256, EVP_CIPH_FLAG_FIPS) 1119 1120static int aes_gcm_cleanup(EVP_CIPHER_CTX *c) 1121{ 1122 EVP_AES_GCM_CTX *gctx = c->cipher_data; 1123 OPENSSL_cleanse(&gctx->gcm, sizeof(gctx->gcm)); 1124 if (gctx->iv != c->iv) 1125 OPENSSL_free(gctx->iv); 1126 return 1; 1127} 1128 1129/* increment counter (64-bit int) by 1 */ 1130static void ctr64_inc(unsigned char *counter) 1131{ 1132 int n = 8; 1133 unsigned char c; 1134 1135 do { 1136 --n; 1137 c = counter[n]; 1138 ++c; 1139 counter[n] = c; 1140 if (c) 1141 return; 1142 } while (n); 1143} 1144 1145static int aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) 1146{ 1147 EVP_AES_GCM_CTX *gctx = c->cipher_data; 1148 switch (type) { 1149 case EVP_CTRL_INIT: 1150 gctx->key_set = 0; 1151 gctx->iv_set = 0; 1152 gctx->ivlen = c->cipher->iv_len; 1153 gctx->iv = c->iv; 1154 gctx->taglen = -1; 1155 gctx->iv_gen = 0; 1156 gctx->tls_aad_len = -1; 1157 return 1; 1158 1159 case EVP_CTRL_GCM_SET_IVLEN: 1160 if (arg <= 0) 1161 return 0; 1162 /* Allocate memory for IV if needed */ 1163 if ((arg > EVP_MAX_IV_LENGTH) && (arg > gctx->ivlen)) { 1164 if (gctx->iv != c->iv) 1165 OPENSSL_free(gctx->iv); 1166 gctx->iv = OPENSSL_malloc(arg); 1167 if (!gctx->iv) 1168 return 0; 1169 } 1170 gctx->ivlen = arg; 1171 return 1; 1172 1173 case EVP_CTRL_GCM_SET_TAG: 1174 if (arg <= 0 || arg > 16 || c->encrypt) 1175 return 0; 1176 memcpy(c->buf, ptr, arg); 1177 gctx->taglen = arg; 1178 return 1; 1179 1180 case EVP_CTRL_GCM_GET_TAG: 1181 if (arg <= 0 || arg > 16 || !c->encrypt || gctx->taglen < 0) 1182 return 0; 1183 memcpy(ptr, c->buf, arg); 1184 return 1; 1185 1186 case EVP_CTRL_GCM_SET_IV_FIXED: 1187 /* Special case: -1 length restores whole IV */ 1188 if (arg == -1) { 1189 memcpy(gctx->iv, ptr, gctx->ivlen); 1190 gctx->iv_gen = 1; 1191 return 1; 1192 } 1193 /* 1194 * Fixed field must be at least 4 bytes and invocation field at least 1195 * 8. 1196 */ 1197 if ((arg < 4) || (gctx->ivlen - arg) < 8) 1198 return 0; 1199 if (arg) 1200 memcpy(gctx->iv, ptr, arg); 1201 if (c->encrypt && RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0) 1202 return 0; 1203 gctx->iv_gen = 1; 1204 return 1; 1205 1206 case EVP_CTRL_GCM_IV_GEN: 1207 if (gctx->iv_gen == 0 || gctx->key_set == 0) 1208 return 0; 1209 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen); 1210 if (arg <= 0 || arg > gctx->ivlen) 1211 arg = gctx->ivlen; 1212 memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg); 1213 /* 1214 * Invocation field will be at least 8 bytes in size and so no need 1215 * to check wrap around or increment more than last 8 bytes. 1216 */ 1217 ctr64_inc(gctx->iv + gctx->ivlen - 8); 1218 gctx->iv_set = 1; 1219 return 1; 1220 1221 case EVP_CTRL_GCM_SET_IV_INV: 1222 if (gctx->iv_gen == 0 || gctx->key_set == 0 || c->encrypt) 1223 return 0; 1224 memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg); 1225 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen); 1226 gctx->iv_set = 1; 1227 return 1; 1228 1229 case EVP_CTRL_AEAD_TLS1_AAD: 1230 /* Save the AAD for later use */ 1231 if (arg != EVP_AEAD_TLS1_AAD_LEN) 1232 return 0; 1233 memcpy(c->buf, ptr, arg); 1234 gctx->tls_aad_len = arg; 1235 { 1236 unsigned int len = c->buf[arg - 2] << 8 | c->buf[arg - 1]; 1237 /* Correct length for explicit IV */ 1238 len -= EVP_GCM_TLS_EXPLICIT_IV_LEN; 1239 /* If decrypting correct for tag too */ 1240 if (!c->encrypt) 1241 len -= EVP_GCM_TLS_TAG_LEN; 1242 c->buf[arg - 2] = len >> 8; 1243 c->buf[arg - 1] = len & 0xff; 1244 } 1245 /* Extra padding: tag appended to record */ 1246 return EVP_GCM_TLS_TAG_LEN; 1247 1248 case EVP_CTRL_COPY: 1249 { 1250 EVP_CIPHER_CTX *out = ptr; 1251 EVP_AES_GCM_CTX *gctx_out = out->cipher_data; 1252 if (gctx->gcm.key) { 1253 if (gctx->gcm.key != &gctx->ks) 1254 return 0; 1255 gctx_out->gcm.key = &gctx_out->ks; 1256 } 1257 if (gctx->iv == c->iv) 1258 gctx_out->iv = out->iv; 1259 else { 1260 gctx_out->iv = OPENSSL_malloc(gctx->ivlen); 1261 if (!gctx_out->iv) 1262 return 0; 1263 memcpy(gctx_out->iv, gctx->iv, gctx->ivlen); 1264 } 1265 return 1; 1266 } 1267 1268 default: 1269 return -1; 1270 1271 } 1272} 1273 1274static int aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 1275 const unsigned char *iv, int enc) 1276{ 1277 EVP_AES_GCM_CTX *gctx = ctx->cipher_data; 1278 if (!iv && !key) 1279 return 1; 1280 if (key) { 1281 do { 1282# ifdef HWAES_CAPABLE 1283 if (HWAES_CAPABLE) { 1284 HWAES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks); 1285 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, 1286 (block128_f) HWAES_encrypt); 1287# ifdef HWAES_ctr32_encrypt_blocks 1288 gctx->ctr = (ctr128_f) HWAES_ctr32_encrypt_blocks; 1289# else 1290 gctx->ctr = NULL; 1291# endif 1292 break; 1293 } else 1294# endif 1295# ifdef BSAES_CAPABLE 1296 if (BSAES_CAPABLE) { 1297 AES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks); 1298 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, 1299 (block128_f) AES_encrypt); 1300 gctx->ctr = (ctr128_f) bsaes_ctr32_encrypt_blocks; 1301 break; 1302 } else 1303# endif 1304# ifdef VPAES_CAPABLE 1305 if (VPAES_CAPABLE) { 1306 vpaes_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks); 1307 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, 1308 (block128_f) vpaes_encrypt); 1309 gctx->ctr = NULL; 1310 break; 1311 } else 1312# endif 1313 (void)0; /* terminate potentially open 'else' */ 1314 1315 AES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks); 1316 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, 1317 (block128_f) AES_encrypt); 1318# ifdef AES_CTR_ASM 1319 gctx->ctr = (ctr128_f) AES_ctr32_encrypt; 1320# else 1321 gctx->ctr = NULL; 1322# endif 1323 } while (0); 1324 1325 /* 1326 * If we have an iv can set it directly, otherwise use saved IV. 1327 */ 1328 if (iv == NULL && gctx->iv_set) 1329 iv = gctx->iv; 1330 if (iv) { 1331 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); 1332 gctx->iv_set = 1; 1333 } 1334 gctx->key_set = 1; 1335 } else { 1336 /* If key set use IV, otherwise copy */ 1337 if (gctx->key_set) 1338 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); 1339 else 1340 memcpy(gctx->iv, iv, gctx->ivlen); 1341 gctx->iv_set = 1; 1342 gctx->iv_gen = 0; 1343 } 1344 return 1; 1345} 1346 1347/* 1348 * Handle TLS GCM packet format. This consists of the last portion of the IV 1349 * followed by the payload and finally the tag. On encrypt generate IV, 1350 * encrypt payload and write the tag. On verify retrieve IV, decrypt payload 1351 * and verify tag. 1352 */ 1353 1354static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 1355 const unsigned char *in, size_t len) 1356{ 1357 EVP_AES_GCM_CTX *gctx = ctx->cipher_data; 1358 int rv = -1; 1359 /* Encrypt/decrypt must be performed in place */ 1360 if (out != in 1361 || len < (EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN)) 1362 return -1; 1363 /* 1364 * Set IV from start of buffer or generate IV and write to start of 1365 * buffer. 1366 */ 1367 if (EVP_CIPHER_CTX_ctrl(ctx, ctx->encrypt ? 1368 EVP_CTRL_GCM_IV_GEN : EVP_CTRL_GCM_SET_IV_INV, 1369 EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0) 1370 goto err; 1371 /* Use saved AAD */ 1372 if (CRYPTO_gcm128_aad(&gctx->gcm, ctx->buf, gctx->tls_aad_len)) 1373 goto err; 1374 /* Fix buffer and length to point to payload */ 1375 in += EVP_GCM_TLS_EXPLICIT_IV_LEN; 1376 out += EVP_GCM_TLS_EXPLICIT_IV_LEN; 1377 len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN; 1378 if (ctx->encrypt) { 1379 /* Encrypt payload */ 1380 if (gctx->ctr) { 1381 size_t bulk = 0; 1382# if defined(AES_GCM_ASM) 1383 if (len >= 32 && AES_GCM_ASM(gctx)) { 1384 if (CRYPTO_gcm128_encrypt(&gctx->gcm, NULL, NULL, 0)) 1385 return -1; 1386 1387 bulk = AES_gcm_encrypt(in, out, len, 1388 gctx->gcm.key, 1389 gctx->gcm.Yi.c, gctx->gcm.Xi.u); 1390 gctx->gcm.len.u[1] += bulk; 1391 } 1392# endif 1393 if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm, 1394 in + bulk, 1395 out + bulk, 1396 len - bulk, gctx->ctr)) 1397 goto err; 1398 } else { 1399 size_t bulk = 0; 1400# if defined(AES_GCM_ASM2) 1401 if (len >= 32 && AES_GCM_ASM2(gctx)) { 1402 if (CRYPTO_gcm128_encrypt(&gctx->gcm, NULL, NULL, 0)) 1403 return -1; 1404 1405 bulk = AES_gcm_encrypt(in, out, len, 1406 gctx->gcm.key, 1407 gctx->gcm.Yi.c, gctx->gcm.Xi.u); 1408 gctx->gcm.len.u[1] += bulk; 1409 } 1410# endif 1411 if (CRYPTO_gcm128_encrypt(&gctx->gcm, 1412 in + bulk, out + bulk, len - bulk)) 1413 goto err; 1414 } 1415 out += len; 1416 /* Finally write tag */ 1417 CRYPTO_gcm128_tag(&gctx->gcm, out, EVP_GCM_TLS_TAG_LEN); 1418 rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN; 1419 } else { 1420 /* Decrypt */ 1421 if (gctx->ctr) { 1422 size_t bulk = 0; 1423# if defined(AES_GCM_ASM) 1424 if (len >= 16 && AES_GCM_ASM(gctx)) { 1425 if (CRYPTO_gcm128_decrypt(&gctx->gcm, NULL, NULL, 0)) 1426 return -1; 1427 1428 bulk = AES_gcm_decrypt(in, out, len, 1429 gctx->gcm.key, 1430 gctx->gcm.Yi.c, gctx->gcm.Xi.u); 1431 gctx->gcm.len.u[1] += bulk; 1432 } 1433# endif 1434 if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm, 1435 in + bulk, 1436 out + bulk, 1437 len - bulk, gctx->ctr)) 1438 goto err; 1439 } else { 1440 size_t bulk = 0; 1441# if defined(AES_GCM_ASM2) 1442 if (len >= 16 && AES_GCM_ASM2(gctx)) { 1443 if (CRYPTO_gcm128_decrypt(&gctx->gcm, NULL, NULL, 0)) 1444 return -1; 1445 1446 bulk = AES_gcm_decrypt(in, out, len, 1447 gctx->gcm.key, 1448 gctx->gcm.Yi.c, gctx->gcm.Xi.u); 1449 gctx->gcm.len.u[1] += bulk; 1450 } 1451# endif 1452 if (CRYPTO_gcm128_decrypt(&gctx->gcm, 1453 in + bulk, out + bulk, len - bulk)) 1454 goto err; 1455 } 1456 /* Retrieve tag */ 1457 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, EVP_GCM_TLS_TAG_LEN); 1458 /* If tag mismatch wipe buffer */ 1459 if (CRYPTO_memcmp(ctx->buf, in + len, EVP_GCM_TLS_TAG_LEN)) { 1460 OPENSSL_cleanse(out, len); 1461 goto err; 1462 } 1463 rv = len; 1464 } 1465 1466 err: 1467 gctx->iv_set = 0; 1468 gctx->tls_aad_len = -1; 1469 return rv; 1470} 1471 1472static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 1473 const unsigned char *in, size_t len) 1474{ 1475 EVP_AES_GCM_CTX *gctx = ctx->cipher_data; 1476 /* If not set up, return error */ 1477 if (!gctx->key_set) 1478 return -1; 1479 1480 if (gctx->tls_aad_len >= 0) 1481 return aes_gcm_tls_cipher(ctx, out, in, len); 1482 1483 if (!gctx->iv_set) 1484 return -1; 1485 if (in) { 1486 if (out == NULL) { 1487 if (CRYPTO_gcm128_aad(&gctx->gcm, in, len)) 1488 return -1; 1489 } else if (ctx->encrypt) { 1490 if (gctx->ctr) { 1491 size_t bulk = 0; 1492# if defined(AES_GCM_ASM) 1493 if (len >= 32 && AES_GCM_ASM(gctx)) { 1494 size_t res = (16 - gctx->gcm.mres) % 16; 1495 1496 if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, res)) 1497 return -1; 1498 1499 bulk = AES_gcm_encrypt(in + res, 1500 out + res, len - res, 1501 gctx->gcm.key, gctx->gcm.Yi.c, 1502 gctx->gcm.Xi.u); 1503 gctx->gcm.len.u[1] += bulk; 1504 bulk += res; 1505 } 1506# endif 1507 if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm, 1508 in + bulk, 1509 out + bulk, 1510 len - bulk, gctx->ctr)) 1511 return -1; 1512 } else { 1513 size_t bulk = 0; 1514# if defined(AES_GCM_ASM2) 1515 if (len >= 32 && AES_GCM_ASM2(gctx)) { 1516 size_t res = (16 - gctx->gcm.mres) % 16; 1517 1518 if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, res)) 1519 return -1; 1520 1521 bulk = AES_gcm_encrypt(in + res, 1522 out + res, len - res, 1523 gctx->gcm.key, gctx->gcm.Yi.c, 1524 gctx->gcm.Xi.u); 1525 gctx->gcm.len.u[1] += bulk; 1526 bulk += res; 1527 } 1528# endif 1529 if (CRYPTO_gcm128_encrypt(&gctx->gcm, 1530 in + bulk, out + bulk, len - bulk)) 1531 return -1; 1532 } 1533 } else { 1534 if (gctx->ctr) { 1535 size_t bulk = 0; 1536# if defined(AES_GCM_ASM) 1537 if (len >= 16 && AES_GCM_ASM(gctx)) { 1538 size_t res = (16 - gctx->gcm.mres) % 16; 1539 1540 if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, res)) 1541 return -1; 1542 1543 bulk = AES_gcm_decrypt(in + res, 1544 out + res, len - res, 1545 gctx->gcm.key, 1546 gctx->gcm.Yi.c, gctx->gcm.Xi.u); 1547 gctx->gcm.len.u[1] += bulk; 1548 bulk += res; 1549 } 1550# endif 1551 if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm, 1552 in + bulk, 1553 out + bulk, 1554 len - bulk, gctx->ctr)) 1555 return -1; 1556 } else { 1557 size_t bulk = 0; 1558# if defined(AES_GCM_ASM2) 1559 if (len >= 16 && AES_GCM_ASM2(gctx)) { 1560 size_t res = (16 - gctx->gcm.mres) % 16; 1561 1562 if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, res)) 1563 return -1; 1564 1565 bulk = AES_gcm_decrypt(in + res, 1566 out + res, len - res, 1567 gctx->gcm.key, 1568 gctx->gcm.Yi.c, gctx->gcm.Xi.u); 1569 gctx->gcm.len.u[1] += bulk; 1570 bulk += res; 1571 } 1572# endif 1573 if (CRYPTO_gcm128_decrypt(&gctx->gcm, 1574 in + bulk, out + bulk, len - bulk)) 1575 return -1; 1576 } 1577 } 1578 return len; 1579 } else { 1580 if (!ctx->encrypt) { 1581 if (gctx->taglen < 0) 1582 return -1; 1583 if (CRYPTO_gcm128_finish(&gctx->gcm, ctx->buf, gctx->taglen) != 0) 1584 return -1; 1585 gctx->iv_set = 0; 1586 return 0; 1587 } 1588 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, 16); 1589 gctx->taglen = 16; 1590 /* Don't reuse the IV */ 1591 gctx->iv_set = 0; 1592 return 0; 1593 } 1594 1595} 1596 1597# define CUSTOM_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 \ 1598 | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \ 1599 | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT \ 1600 | EVP_CIPH_CUSTOM_COPY) 1601 1602BLOCK_CIPHER_custom(NID_aes, 128, 1, 12, gcm, GCM, 1603 EVP_CIPH_FLAG_FIPS | EVP_CIPH_FLAG_AEAD_CIPHER | 1604 CUSTOM_FLAGS) 1605 BLOCK_CIPHER_custom(NID_aes, 192, 1, 12, gcm, GCM, 1606 EVP_CIPH_FLAG_FIPS | EVP_CIPH_FLAG_AEAD_CIPHER | 1607 CUSTOM_FLAGS) 1608 BLOCK_CIPHER_custom(NID_aes, 256, 1, 12, gcm, GCM, 1609 EVP_CIPH_FLAG_FIPS | EVP_CIPH_FLAG_AEAD_CIPHER | 1610 CUSTOM_FLAGS) 1611 1612static int aes_xts_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) 1613{ 1614 EVP_AES_XTS_CTX *xctx = c->cipher_data; 1615 if (type == EVP_CTRL_COPY) { 1616 EVP_CIPHER_CTX *out = ptr; 1617 EVP_AES_XTS_CTX *xctx_out = out->cipher_data; 1618 if (xctx->xts.key1) { 1619 if (xctx->xts.key1 != &xctx->ks1) 1620 return 0; 1621 xctx_out->xts.key1 = &xctx_out->ks1; 1622 } 1623 if (xctx->xts.key2) { 1624 if (xctx->xts.key2 != &xctx->ks2) 1625 return 0; 1626 xctx_out->xts.key2 = &xctx_out->ks2; 1627 } 1628 return 1; 1629 } else if (type != EVP_CTRL_INIT) 1630 return -1; 1631 /* key1 and key2 are used as an indicator both key and IV are set */ 1632 xctx->xts.key1 = NULL; 1633 xctx->xts.key2 = NULL; 1634 return 1; 1635} 1636 1637static int aes_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 1638 const unsigned char *iv, int enc) 1639{ 1640 EVP_AES_XTS_CTX *xctx = ctx->cipher_data; 1641 if (!iv && !key) 1642 return 1; 1643 1644 if (key) 1645 do { 1646# ifdef AES_XTS_ASM 1647 xctx->stream = enc ? AES_xts_encrypt : AES_xts_decrypt; 1648# else 1649 xctx->stream = NULL; 1650# endif 1651 /* key_len is two AES keys */ 1652# ifdef HWAES_CAPABLE 1653 if (HWAES_CAPABLE) { 1654 if (enc) { 1655 HWAES_set_encrypt_key(key, ctx->key_len * 4, 1656 &xctx->ks1.ks); 1657 xctx->xts.block1 = (block128_f) HWAES_encrypt; 1658 } else { 1659 HWAES_set_decrypt_key(key, ctx->key_len * 4, 1660 &xctx->ks1.ks); 1661 xctx->xts.block1 = (block128_f) HWAES_decrypt; 1662 } 1663 1664 HWAES_set_encrypt_key(key + ctx->key_len / 2, 1665 ctx->key_len * 4, &xctx->ks2.ks); 1666 xctx->xts.block2 = (block128_f) HWAES_encrypt; 1667 1668 xctx->xts.key1 = &xctx->ks1; 1669 break; 1670 } else 1671# endif 1672# ifdef BSAES_CAPABLE 1673 if (BSAES_CAPABLE) 1674 xctx->stream = enc ? bsaes_xts_encrypt : bsaes_xts_decrypt; 1675 else 1676# endif 1677# ifdef VPAES_CAPABLE 1678 if (VPAES_CAPABLE) { 1679 if (enc) { 1680 vpaes_set_encrypt_key(key, ctx->key_len * 4, 1681 &xctx->ks1.ks); 1682 xctx->xts.block1 = (block128_f) vpaes_encrypt; 1683 } else { 1684 vpaes_set_decrypt_key(key, ctx->key_len * 4, 1685 &xctx->ks1.ks); 1686 xctx->xts.block1 = (block128_f) vpaes_decrypt; 1687 } 1688 1689 vpaes_set_encrypt_key(key + ctx->key_len / 2, 1690 ctx->key_len * 4, &xctx->ks2.ks); 1691 xctx->xts.block2 = (block128_f) vpaes_encrypt; 1692 1693 xctx->xts.key1 = &xctx->ks1; 1694 break; 1695 } else 1696# endif 1697 (void)0; /* terminate potentially open 'else' */ 1698 1699 if (enc) { 1700 AES_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks); 1701 xctx->xts.block1 = (block128_f) AES_encrypt; 1702 } else { 1703 AES_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks); 1704 xctx->xts.block1 = (block128_f) AES_decrypt; 1705 } 1706 1707 AES_set_encrypt_key(key + ctx->key_len / 2, 1708 ctx->key_len * 4, &xctx->ks2.ks); 1709 xctx->xts.block2 = (block128_f) AES_encrypt; 1710 1711 xctx->xts.key1 = &xctx->ks1; 1712 } while (0); 1713 1714 if (iv) { 1715 xctx->xts.key2 = &xctx->ks2; 1716 memcpy(ctx->iv, iv, 16); 1717 } 1718 1719 return 1; 1720} 1721 1722static int aes_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 1723 const unsigned char *in, size_t len) 1724{ 1725 EVP_AES_XTS_CTX *xctx = ctx->cipher_data; 1726 if (!xctx->xts.key1 || !xctx->xts.key2) 1727 return 0; 1728 if (!out || !in || len < AES_BLOCK_SIZE) 1729 return 0; 1730 if (xctx->stream) 1731 (*xctx->stream) (in, out, len, 1732 xctx->xts.key1, xctx->xts.key2, ctx->iv); 1733 else if (CRYPTO_xts128_encrypt(&xctx->xts, ctx->iv, in, out, len, 1734 ctx->encrypt)) 1735 return 0; 1736 return 1; 1737} 1738 1739# define aes_xts_cleanup NULL 1740 1741# define XTS_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 | EVP_CIPH_CUSTOM_IV \ 1742 | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT \ 1743 | EVP_CIPH_CUSTOM_COPY) 1744 1745BLOCK_CIPHER_custom(NID_aes, 128, 1, 16, xts, XTS, 1746 EVP_CIPH_FLAG_FIPS | XTS_FLAGS) 1747 BLOCK_CIPHER_custom(NID_aes, 256, 1, 16, xts, XTS, 1748 EVP_CIPH_FLAG_FIPS | XTS_FLAGS) 1749 1750static int aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) 1751{ 1752 EVP_AES_CCM_CTX *cctx = c->cipher_data; 1753 switch (type) { 1754 case EVP_CTRL_INIT: 1755 cctx->key_set = 0; 1756 cctx->iv_set = 0; 1757 cctx->L = 8; 1758 cctx->M = 12; 1759 cctx->tag_set = 0; 1760 cctx->len_set = 0; 1761 return 1; 1762 1763 case EVP_CTRL_CCM_SET_IVLEN: 1764 arg = 15 - arg; 1765 case EVP_CTRL_CCM_SET_L: 1766 if (arg < 2 || arg > 8) 1767 return 0; 1768 cctx->L = arg; 1769 return 1; 1770 1771 case EVP_CTRL_CCM_SET_TAG: 1772 if ((arg & 1) || arg < 4 || arg > 16) 1773 return 0; 1774 if (c->encrypt && ptr) 1775 return 0; 1776 if (ptr) { 1777 cctx->tag_set = 1; 1778 memcpy(c->buf, ptr, arg); 1779 } 1780 cctx->M = arg; 1781 return 1; 1782 1783 case EVP_CTRL_CCM_GET_TAG: 1784 if (!c->encrypt || !cctx->tag_set) 1785 return 0; 1786 if (!CRYPTO_ccm128_tag(&cctx->ccm, ptr, (size_t)arg)) 1787 return 0; 1788 cctx->tag_set = 0; 1789 cctx->iv_set = 0; 1790 cctx->len_set = 0; 1791 return 1; 1792 1793 case EVP_CTRL_COPY: 1794 { 1795 EVP_CIPHER_CTX *out = ptr; 1796 EVP_AES_CCM_CTX *cctx_out = out->cipher_data; 1797 if (cctx->ccm.key) { 1798 if (cctx->ccm.key != &cctx->ks) 1799 return 0; 1800 cctx_out->ccm.key = &cctx_out->ks; 1801 } 1802 return 1; 1803 } 1804 1805 default: 1806 return -1; 1807 1808 } 1809} 1810 1811static int aes_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 1812 const unsigned char *iv, int enc) 1813{ 1814 EVP_AES_CCM_CTX *cctx = ctx->cipher_data; 1815 if (!iv && !key) 1816 return 1; 1817 if (key) 1818 do { 1819# ifdef HWAES_CAPABLE 1820 if (HWAES_CAPABLE) { 1821 HWAES_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks.ks); 1822 1823 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, 1824 &cctx->ks, (block128_f) HWAES_encrypt); 1825 cctx->str = NULL; 1826 cctx->key_set = 1; 1827 break; 1828 } else 1829# endif 1830# ifdef VPAES_CAPABLE 1831 if (VPAES_CAPABLE) { 1832 vpaes_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks.ks); 1833 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, 1834 &cctx->ks, (block128_f) vpaes_encrypt); 1835 cctx->str = NULL; 1836 cctx->key_set = 1; 1837 break; 1838 } 1839# endif 1840 AES_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks.ks); 1841 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, 1842 &cctx->ks, (block128_f) AES_encrypt); 1843 cctx->str = NULL; 1844 cctx->key_set = 1; 1845 } while (0); 1846 if (iv) { 1847 memcpy(ctx->iv, iv, 15 - cctx->L); 1848 cctx->iv_set = 1; 1849 } 1850 return 1; 1851} 1852 1853static int aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 1854 const unsigned char *in, size_t len) 1855{ 1856 EVP_AES_CCM_CTX *cctx = ctx->cipher_data; 1857 CCM128_CONTEXT *ccm = &cctx->ccm; 1858 /* If not set up, return error */ 1859 if (!cctx->iv_set && !cctx->key_set) 1860 return -1; 1861 if (!ctx->encrypt && !cctx->tag_set) 1862 return -1; 1863 if (!out) { 1864 if (!in) { 1865 if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L, len)) 1866 return -1; 1867 cctx->len_set = 1; 1868 return len; 1869 } 1870 /* If have AAD need message length */ 1871 if (!cctx->len_set && len) 1872 return -1; 1873 CRYPTO_ccm128_aad(ccm, in, len); 1874 return len; 1875 } 1876 /* EVP_*Final() doesn't return any data */ 1877 if (!in) 1878 return 0; 1879 /* If not set length yet do it */ 1880 if (!cctx->len_set) { 1881 if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L, len)) 1882 return -1; 1883 cctx->len_set = 1; 1884 } 1885 if (ctx->encrypt) { 1886 if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len, 1887 cctx->str) : 1888 CRYPTO_ccm128_encrypt(ccm, in, out, len)) 1889 return -1; 1890 cctx->tag_set = 1; 1891 return len; 1892 } else { 1893 int rv = -1; 1894 if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len, 1895 cctx->str) : 1896 !CRYPTO_ccm128_decrypt(ccm, in, out, len)) { 1897 unsigned char tag[16]; 1898 if (CRYPTO_ccm128_tag(ccm, tag, cctx->M)) { 1899 if (!CRYPTO_memcmp(tag, ctx->buf, cctx->M)) 1900 rv = len; 1901 } 1902 } 1903 if (rv == -1) 1904 OPENSSL_cleanse(out, len); 1905 cctx->iv_set = 0; 1906 cctx->tag_set = 0; 1907 cctx->len_set = 0; 1908 return rv; 1909 } 1910 1911} 1912 1913# define aes_ccm_cleanup NULL 1914 1915BLOCK_CIPHER_custom(NID_aes, 128, 1, 12, ccm, CCM, 1916 EVP_CIPH_FLAG_FIPS | CUSTOM_FLAGS) 1917 BLOCK_CIPHER_custom(NID_aes, 192, 1, 12, ccm, CCM, 1918 EVP_CIPH_FLAG_FIPS | CUSTOM_FLAGS) 1919 BLOCK_CIPHER_custom(NID_aes, 256, 1, 12, ccm, CCM, 1920 EVP_CIPH_FLAG_FIPS | CUSTOM_FLAGS) 1921#endif 1922typedef struct { 1923 union { 1924 double align; 1925 AES_KEY ks; 1926 } ks; 1927 /* Indicates if IV has been set */ 1928 unsigned char *iv; 1929} EVP_AES_WRAP_CTX; 1930 1931static int aes_wrap_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 1932 const unsigned char *iv, int enc) 1933{ 1934 EVP_AES_WRAP_CTX *wctx = ctx->cipher_data; 1935 if (!iv && !key) 1936 return 1; 1937 if (key) { 1938 if (ctx->encrypt) 1939 AES_set_encrypt_key(key, ctx->key_len * 8, &wctx->ks.ks); 1940 else 1941 AES_set_decrypt_key(key, ctx->key_len * 8, &wctx->ks.ks); 1942 if (!iv) 1943 wctx->iv = NULL; 1944 } 1945 if (iv) { 1946 memcpy(ctx->iv, iv, 8); 1947 wctx->iv = ctx->iv; 1948 } 1949 return 1; 1950} 1951 1952static int aes_wrap_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 1953 const unsigned char *in, size_t inlen) 1954{ 1955 EVP_AES_WRAP_CTX *wctx = ctx->cipher_data; 1956 size_t rv; 1957 if (!in) 1958 return 0; 1959 if (inlen % 8) 1960 return -1; 1961 if (ctx->encrypt && inlen < 8) 1962 return -1; 1963 if (!ctx->encrypt && inlen < 16) 1964 return -1; 1965 if (!out) { 1966 if (ctx->encrypt) 1967 return inlen + 8; 1968 else 1969 return inlen - 8; 1970 } 1971 if (ctx->encrypt) 1972 rv = CRYPTO_128_wrap(&wctx->ks.ks, wctx->iv, out, in, inlen, 1973 (block128_f) AES_encrypt); 1974 else 1975 rv = CRYPTO_128_unwrap(&wctx->ks.ks, wctx->iv, out, in, inlen, 1976 (block128_f) AES_decrypt); 1977 return rv ? (int)rv : -1; 1978} 1979 1980#define WRAP_FLAGS (EVP_CIPH_WRAP_MODE \ 1981 | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \ 1982 | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_FLAG_DEFAULT_ASN1) 1983 1984static const EVP_CIPHER aes_128_wrap = { 1985 NID_id_aes128_wrap, 1986 8, 16, 8, WRAP_FLAGS, 1987 aes_wrap_init_key, aes_wrap_cipher, 1988 NULL, 1989 sizeof(EVP_AES_WRAP_CTX), 1990 NULL, NULL, NULL, NULL 1991}; 1992 1993const EVP_CIPHER *EVP_aes_128_wrap(void) 1994{ 1995 return &aes_128_wrap; 1996} 1997 1998static const EVP_CIPHER aes_192_wrap = { 1999 NID_id_aes192_wrap, 2000 8, 24, 8, WRAP_FLAGS, 2001 aes_wrap_init_key, aes_wrap_cipher, 2002 NULL, 2003 sizeof(EVP_AES_WRAP_CTX), 2004 NULL, NULL, NULL, NULL 2005}; 2006 2007const EVP_CIPHER *EVP_aes_192_wrap(void) 2008{ 2009 return &aes_192_wrap; 2010} 2011 2012static const EVP_CIPHER aes_256_wrap = { 2013 NID_id_aes256_wrap, 2014 8, 32, 8, WRAP_FLAGS, 2015 aes_wrap_init_key, aes_wrap_cipher, 2016 NULL, 2017 sizeof(EVP_AES_WRAP_CTX), 2018 NULL, NULL, NULL, NULL 2019}; 2020 2021const EVP_CIPHER *EVP_aes_256_wrap(void) 2022{ 2023 return &aes_256_wrap; 2024} 2025