1109998Smarkm/* ==================================================================== 2238405Sjkim * Copyright (c) 2001-2011 The OpenSSL Project. All rights reserved. 3109998Smarkm * 4109998Smarkm * Redistribution and use in source and binary forms, with or without 5109998Smarkm * modification, are permitted provided that the following conditions 6109998Smarkm * are met: 7109998Smarkm * 8109998Smarkm * 1. Redistributions of source code must retain the above copyright 9280304Sjkim * notice, this list of conditions and the following disclaimer. 10109998Smarkm * 11109998Smarkm * 2. Redistributions in binary form must reproduce the above copyright 12109998Smarkm * notice, this list of conditions and the following disclaimer in 13109998Smarkm * the documentation and/or other materials provided with the 14109998Smarkm * distribution. 15109998Smarkm * 16109998Smarkm * 3. All advertising materials mentioning features or use of this 17109998Smarkm * software must display the following acknowledgment: 18109998Smarkm * "This product includes software developed by the OpenSSL Project 19109998Smarkm * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 20109998Smarkm * 21109998Smarkm * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 22109998Smarkm * endorse or promote products derived from this software without 23109998Smarkm * prior written permission. For written permission, please contact 24109998Smarkm * openssl-core@openssl.org. 25109998Smarkm * 26109998Smarkm * 5. Products derived from this software may not be called "OpenSSL" 27109998Smarkm * nor may "OpenSSL" appear in their names without prior written 28109998Smarkm * permission of the OpenSSL Project. 29109998Smarkm * 30109998Smarkm * 6. Redistributions of any form whatsoever must retain the following 31109998Smarkm * acknowledgment: 32109998Smarkm * "This product includes software developed by the OpenSSL Project 33109998Smarkm * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 34109998Smarkm * 35109998Smarkm * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 36109998Smarkm * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 37109998Smarkm * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 38109998Smarkm * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 39109998Smarkm * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 40109998Smarkm * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 41109998Smarkm * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 42109998Smarkm * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 43109998Smarkm * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 44109998Smarkm * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 45109998Smarkm * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 46109998Smarkm * OF THE POSSIBILITY OF SUCH DAMAGE. 47109998Smarkm * ==================================================================== 48109998Smarkm * 49109998Smarkm */ 50109998Smarkm 51160814Ssimon#include <openssl/opensslconf.h> 52109998Smarkm#ifndef OPENSSL_NO_AES 53284285Sjkim#include <openssl/crypto.h> 54280304Sjkim# include <openssl/evp.h> 55280304Sjkim# include <openssl/err.h> 56280304Sjkim# include <string.h> 57280304Sjkim# include <assert.h> 58280304Sjkim# include <openssl/aes.h> 59280304Sjkim# include "evp_locl.h" 60280304Sjkim# ifndef OPENSSL_FIPS 61280304Sjkim# include "modes_lcl.h" 62280304Sjkim# include <openssl/rand.h> 63109998Smarkm 64280304Sjkimtypedef struct { 65280304Sjkim AES_KEY ks; 66280304Sjkim block128_f block; 67280304Sjkim union { 68280304Sjkim cbc128_f cbc; 69280304Sjkim ctr128_f ctr; 70280304Sjkim } stream; 71280304Sjkim} EVP_AES_KEY; 72109998Smarkm 73280304Sjkimtypedef struct { 74280304Sjkim AES_KEY ks; /* AES key schedule to use */ 75280304Sjkim int key_set; /* Set if key initialised */ 76280304Sjkim int iv_set; /* Set if an iv is set */ 77280304Sjkim GCM128_CONTEXT gcm; 78280304Sjkim unsigned char *iv; /* Temporary IV store */ 79280304Sjkim int ivlen; /* IV length */ 80280304Sjkim int taglen; 81280304Sjkim int iv_gen; /* It is OK to generate IVs */ 82280304Sjkim int tls_aad_len; /* TLS AAD length */ 83280304Sjkim ctr128_f ctr; 84280304Sjkim} EVP_AES_GCM_CTX; 85109998Smarkm 86280304Sjkimtypedef struct { 87280304Sjkim AES_KEY ks1, ks2; /* AES key schedules to use */ 88280304Sjkim XTS128_CONTEXT xts; 89280304Sjkim void (*stream) (const unsigned char *in, 90280304Sjkim unsigned char *out, size_t length, 91280304Sjkim const AES_KEY *key1, const AES_KEY *key2, 92280304Sjkim const unsigned char iv[16]); 93280304Sjkim} EVP_AES_XTS_CTX; 94109998Smarkm 95280304Sjkimtypedef struct { 96280304Sjkim AES_KEY ks; /* AES key schedule to use */ 97280304Sjkim int key_set; /* Set if key initialised */ 98280304Sjkim int iv_set; /* Set if an iv is set */ 99280304Sjkim int tag_set; /* Set if tag is valid */ 100280304Sjkim int len_set; /* Set if message length set */ 101280304Sjkim int L, M; /* L and M parameters from RFC3610 */ 102280304Sjkim CCM128_CONTEXT ccm; 103280304Sjkim ccm128_f str; 104280304Sjkim} EVP_AES_CCM_CTX; 105142425Snectar 106280304Sjkim# define MAXBITCHUNK ((size_t)1<<(sizeof(size_t)*8-4)) 107142425Snectar 108280304Sjkim# ifdef VPAES_ASM 109238405Sjkimint vpaes_set_encrypt_key(const unsigned char *userKey, int bits, 110280304Sjkim AES_KEY *key); 111238405Sjkimint vpaes_set_decrypt_key(const unsigned char *userKey, int bits, 112280304Sjkim AES_KEY *key); 113142425Snectar 114238405Sjkimvoid vpaes_encrypt(const unsigned char *in, unsigned char *out, 115280304Sjkim const AES_KEY *key); 116238405Sjkimvoid vpaes_decrypt(const unsigned char *in, unsigned char *out, 117280304Sjkim const AES_KEY *key); 118238405Sjkim 119238405Sjkimvoid vpaes_cbc_encrypt(const unsigned char *in, 120280304Sjkim unsigned char *out, 121280304Sjkim size_t length, 122280304Sjkim const AES_KEY *key, unsigned char *ivec, int enc); 123280304Sjkim# endif 124280304Sjkim# ifdef BSAES_ASM 125238405Sjkimvoid bsaes_cbc_encrypt(const unsigned char *in, unsigned char *out, 126280304Sjkim size_t length, const AES_KEY *key, 127280304Sjkim unsigned char ivec[16], int enc); 128238405Sjkimvoid bsaes_ctr32_encrypt_blocks(const unsigned char *in, unsigned char *out, 129280304Sjkim size_t len, const AES_KEY *key, 130280304Sjkim const unsigned char ivec[16]); 131238405Sjkimvoid bsaes_xts_encrypt(const unsigned char *inp, unsigned char *out, 132280304Sjkim size_t len, const AES_KEY *key1, 133280304Sjkim const AES_KEY *key2, const unsigned char iv[16]); 134238405Sjkimvoid bsaes_xts_decrypt(const unsigned char *inp, unsigned char *out, 135280304Sjkim size_t len, const AES_KEY *key1, 136280304Sjkim const AES_KEY *key2, const unsigned char iv[16]); 137280304Sjkim# endif 138280304Sjkim# ifdef AES_CTR_ASM 139238405Sjkimvoid AES_ctr32_encrypt(const unsigned char *in, unsigned char *out, 140280304Sjkim size_t blocks, const AES_KEY *key, 141280304Sjkim const unsigned char ivec[AES_BLOCK_SIZE]); 142280304Sjkim# endif 143280304Sjkim# ifdef AES_XTS_ASM 144280304Sjkimvoid AES_xts_encrypt(const char *inp, char *out, size_t len, 145280304Sjkim const AES_KEY *key1, const AES_KEY *key2, 146280304Sjkim const unsigned char iv[16]); 147280304Sjkimvoid AES_xts_decrypt(const char *inp, char *out, size_t len, 148280304Sjkim const AES_KEY *key1, const AES_KEY *key2, 149280304Sjkim const unsigned char iv[16]); 150280304Sjkim# endif 151238405Sjkim 152280304Sjkim# if defined(AES_ASM) && !defined(I386_ONLY) && ( \ 153280304Sjkim ((defined(__i386) || defined(__i386__) || \ 154280304Sjkim defined(_M_IX86)) && defined(OPENSSL_IA32_SSE2))|| \ 155280304Sjkim defined(__x86_64) || defined(__x86_64__) || \ 156280304Sjkim defined(_M_AMD64) || defined(_M_X64) || \ 157280304Sjkim defined(__INTEL__) ) 158238405Sjkim 159238405Sjkimextern unsigned int OPENSSL_ia32cap_P[2]; 160238405Sjkim 161280304Sjkim# ifdef VPAES_ASM 162280304Sjkim# define VPAES_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(41-32))) 163280304Sjkim# endif 164280304Sjkim# ifdef BSAES_ASM 165280304Sjkim# define BSAES_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(41-32))) 166280304Sjkim# endif 167238405Sjkim/* 168238405Sjkim * AES-NI section 169238405Sjkim */ 170280304Sjkim# define AESNI_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(57-32))) 171238405Sjkim 172238405Sjkimint aesni_set_encrypt_key(const unsigned char *userKey, int bits, 173280304Sjkim AES_KEY *key); 174238405Sjkimint aesni_set_decrypt_key(const unsigned char *userKey, int bits, 175280304Sjkim AES_KEY *key); 176238405Sjkim 177238405Sjkimvoid aesni_encrypt(const unsigned char *in, unsigned char *out, 178280304Sjkim const AES_KEY *key); 179238405Sjkimvoid aesni_decrypt(const unsigned char *in, unsigned char *out, 180280304Sjkim const AES_KEY *key); 181238405Sjkim 182238405Sjkimvoid aesni_ecb_encrypt(const unsigned char *in, 183280304Sjkim unsigned char *out, 184280304Sjkim size_t length, const AES_KEY *key, int enc); 185238405Sjkimvoid aesni_cbc_encrypt(const unsigned char *in, 186280304Sjkim unsigned char *out, 187280304Sjkim size_t length, 188280304Sjkim const AES_KEY *key, unsigned char *ivec, int enc); 189238405Sjkim 190238405Sjkimvoid aesni_ctr32_encrypt_blocks(const unsigned char *in, 191280304Sjkim unsigned char *out, 192280304Sjkim size_t blocks, 193280304Sjkim const void *key, const unsigned char *ivec); 194238405Sjkim 195238405Sjkimvoid aesni_xts_encrypt(const unsigned char *in, 196280304Sjkim unsigned char *out, 197280304Sjkim size_t length, 198280304Sjkim const AES_KEY *key1, const AES_KEY *key2, 199280304Sjkim const unsigned char iv[16]); 200238405Sjkim 201238405Sjkimvoid aesni_xts_decrypt(const unsigned char *in, 202280304Sjkim unsigned char *out, 203280304Sjkim size_t length, 204280304Sjkim const AES_KEY *key1, const AES_KEY *key2, 205280304Sjkim const unsigned char iv[16]); 206238405Sjkim 207280304Sjkimvoid aesni_ccm64_encrypt_blocks(const unsigned char *in, 208280304Sjkim unsigned char *out, 209280304Sjkim size_t blocks, 210280304Sjkim const void *key, 211280304Sjkim const unsigned char ivec[16], 212280304Sjkim unsigned char cmac[16]); 213238405Sjkim 214280304Sjkimvoid aesni_ccm64_decrypt_blocks(const unsigned char *in, 215280304Sjkim unsigned char *out, 216280304Sjkim size_t blocks, 217280304Sjkim const void *key, 218280304Sjkim const unsigned char ivec[16], 219280304Sjkim unsigned char cmac[16]); 220238405Sjkim 221238405Sjkimstatic int aesni_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 222280304Sjkim const unsigned char *iv, int enc) 223280304Sjkim{ 224280304Sjkim int ret, mode; 225280304Sjkim EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; 226238405Sjkim 227280304Sjkim mode = ctx->cipher->flags & EVP_CIPH_MODE; 228280304Sjkim if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE) 229280304Sjkim && !enc) { 230280304Sjkim ret = aesni_set_decrypt_key(key, ctx->key_len * 8, ctx->cipher_data); 231280304Sjkim dat->block = (block128_f) aesni_decrypt; 232280304Sjkim dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? 233280304Sjkim (cbc128_f) aesni_cbc_encrypt : NULL; 234280304Sjkim } else { 235280304Sjkim ret = aesni_set_encrypt_key(key, ctx->key_len * 8, ctx->cipher_data); 236280304Sjkim dat->block = (block128_f) aesni_encrypt; 237280304Sjkim if (mode == EVP_CIPH_CBC_MODE) 238280304Sjkim dat->stream.cbc = (cbc128_f) aesni_cbc_encrypt; 239280304Sjkim else if (mode == EVP_CIPH_CTR_MODE) 240280304Sjkim dat->stream.ctr = (ctr128_f) aesni_ctr32_encrypt_blocks; 241280304Sjkim else 242280304Sjkim dat->stream.cbc = NULL; 243280304Sjkim } 244238405Sjkim 245280304Sjkim if (ret < 0) { 246280304Sjkim EVPerr(EVP_F_AESNI_INIT_KEY, EVP_R_AES_KEY_SETUP_FAILED); 247280304Sjkim return 0; 248280304Sjkim } 249238405Sjkim 250280304Sjkim return 1; 251280304Sjkim} 252238405Sjkim 253280304Sjkimstatic int aesni_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 254280304Sjkim const unsigned char *in, size_t len) 255238405Sjkim{ 256280304Sjkim aesni_cbc_encrypt(in, out, len, ctx->cipher_data, ctx->iv, ctx->encrypt); 257238405Sjkim 258280304Sjkim return 1; 259238405Sjkim} 260238405Sjkim 261280304Sjkimstatic int aesni_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 262280304Sjkim const unsigned char *in, size_t len) 263238405Sjkim{ 264280304Sjkim size_t bl = ctx->cipher->block_size; 265238405Sjkim 266280304Sjkim if (len < bl) 267280304Sjkim return 1; 268238405Sjkim 269280304Sjkim aesni_ecb_encrypt(in, out, len, ctx->cipher_data, ctx->encrypt); 270238405Sjkim 271280304Sjkim return 1; 272238405Sjkim} 273238405Sjkim 274280304Sjkim# define aesni_ofb_cipher aes_ofb_cipher 275280304Sjkimstatic int aesni_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 276280304Sjkim const unsigned char *in, size_t len); 277238405Sjkim 278280304Sjkim# define aesni_cfb_cipher aes_cfb_cipher 279280304Sjkimstatic int aesni_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 280280304Sjkim const unsigned char *in, size_t len); 281238405Sjkim 282280304Sjkim# define aesni_cfb8_cipher aes_cfb8_cipher 283280304Sjkimstatic int aesni_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 284280304Sjkim const unsigned char *in, size_t len); 285238405Sjkim 286280304Sjkim# define aesni_cfb1_cipher aes_cfb1_cipher 287280304Sjkimstatic int aesni_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 288280304Sjkim const unsigned char *in, size_t len); 289238405Sjkim 290280304Sjkim# define aesni_ctr_cipher aes_ctr_cipher 291238405Sjkimstatic int aesni_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 292280304Sjkim const unsigned char *in, size_t len); 293238405Sjkim 294238405Sjkimstatic int aesni_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 295280304Sjkim const unsigned char *iv, int enc) 296280304Sjkim{ 297280304Sjkim EVP_AES_GCM_CTX *gctx = ctx->cipher_data; 298280304Sjkim if (!iv && !key) 299280304Sjkim return 1; 300280304Sjkim if (key) { 301280304Sjkim aesni_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks); 302280304Sjkim CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f) aesni_encrypt); 303280304Sjkim gctx->ctr = (ctr128_f) aesni_ctr32_encrypt_blocks; 304280304Sjkim /* 305280304Sjkim * If we have an iv can set it directly, otherwise use saved IV. 306280304Sjkim */ 307280304Sjkim if (iv == NULL && gctx->iv_set) 308280304Sjkim iv = gctx->iv; 309280304Sjkim if (iv) { 310280304Sjkim CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); 311280304Sjkim gctx->iv_set = 1; 312280304Sjkim } 313280304Sjkim gctx->key_set = 1; 314280304Sjkim } else { 315280304Sjkim /* If key set use IV, otherwise copy */ 316280304Sjkim if (gctx->key_set) 317280304Sjkim CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); 318280304Sjkim else 319280304Sjkim memcpy(gctx->iv, iv, gctx->ivlen); 320280304Sjkim gctx->iv_set = 1; 321280304Sjkim gctx->iv_gen = 0; 322280304Sjkim } 323280304Sjkim return 1; 324280304Sjkim} 325238405Sjkim 326280304Sjkim# define aesni_gcm_cipher aes_gcm_cipher 327238405Sjkimstatic int aesni_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 328280304Sjkim const unsigned char *in, size_t len); 329238405Sjkim 330238405Sjkimstatic int aesni_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 331280304Sjkim const unsigned char *iv, int enc) 332280304Sjkim{ 333280304Sjkim EVP_AES_XTS_CTX *xctx = ctx->cipher_data; 334280304Sjkim if (!iv && !key) 335280304Sjkim return 1; 336238405Sjkim 337280304Sjkim if (key) { 338280304Sjkim /* key_len is two AES keys */ 339280304Sjkim if (enc) { 340280304Sjkim aesni_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1); 341280304Sjkim xctx->xts.block1 = (block128_f) aesni_encrypt; 342280304Sjkim xctx->stream = aesni_xts_encrypt; 343280304Sjkim } else { 344280304Sjkim aesni_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1); 345280304Sjkim xctx->xts.block1 = (block128_f) aesni_decrypt; 346280304Sjkim xctx->stream = aesni_xts_decrypt; 347280304Sjkim } 348238405Sjkim 349280304Sjkim aesni_set_encrypt_key(key + ctx->key_len / 2, 350280304Sjkim ctx->key_len * 4, &xctx->ks2); 351280304Sjkim xctx->xts.block2 = (block128_f) aesni_encrypt; 352238405Sjkim 353280304Sjkim xctx->xts.key1 = &xctx->ks1; 354280304Sjkim } 355238405Sjkim 356280304Sjkim if (iv) { 357280304Sjkim xctx->xts.key2 = &xctx->ks2; 358280304Sjkim memcpy(ctx->iv, iv, 16); 359280304Sjkim } 360238405Sjkim 361280304Sjkim return 1; 362280304Sjkim} 363238405Sjkim 364280304Sjkim# define aesni_xts_cipher aes_xts_cipher 365238405Sjkimstatic int aesni_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 366280304Sjkim const unsigned char *in, size_t len); 367238405Sjkim 368238405Sjkimstatic int aesni_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 369280304Sjkim const unsigned char *iv, int enc) 370280304Sjkim{ 371280304Sjkim EVP_AES_CCM_CTX *cctx = ctx->cipher_data; 372280304Sjkim if (!iv && !key) 373280304Sjkim return 1; 374280304Sjkim if (key) { 375280304Sjkim aesni_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks); 376280304Sjkim CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, 377280304Sjkim &cctx->ks, (block128_f) aesni_encrypt); 378280304Sjkim cctx->str = enc ? (ccm128_f) aesni_ccm64_encrypt_blocks : 379280304Sjkim (ccm128_f) aesni_ccm64_decrypt_blocks; 380280304Sjkim cctx->key_set = 1; 381280304Sjkim } 382280304Sjkim if (iv) { 383280304Sjkim memcpy(ctx->iv, iv, 15 - cctx->L); 384280304Sjkim cctx->iv_set = 1; 385280304Sjkim } 386280304Sjkim return 1; 387280304Sjkim} 388238405Sjkim 389280304Sjkim# define aesni_ccm_cipher aes_ccm_cipher 390238405Sjkimstatic int aesni_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 391280304Sjkim const unsigned char *in, size_t len); 392238405Sjkim 393280304Sjkim# define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \ 394238405Sjkimstatic const EVP_CIPHER aesni_##keylen##_##mode = { \ 395280304Sjkim nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \ 396280304Sjkim flags|EVP_CIPH_##MODE##_MODE, \ 397280304Sjkim aesni_init_key, \ 398280304Sjkim aesni_##mode##_cipher, \ 399280304Sjkim NULL, \ 400280304Sjkim sizeof(EVP_AES_KEY), \ 401280304Sjkim NULL,NULL,NULL,NULL }; \ 402238405Sjkimstatic const EVP_CIPHER aes_##keylen##_##mode = { \ 403280304Sjkim nid##_##keylen##_##nmode,blocksize, \ 404280304Sjkim keylen/8,ivlen, \ 405280304Sjkim flags|EVP_CIPH_##MODE##_MODE, \ 406280304Sjkim aes_init_key, \ 407280304Sjkim aes_##mode##_cipher, \ 408280304Sjkim NULL, \ 409280304Sjkim sizeof(EVP_AES_KEY), \ 410280304Sjkim NULL,NULL,NULL,NULL }; \ 411238405Sjkimconst EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ 412238405Sjkim{ return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; } 413238405Sjkim 414280304Sjkim# define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \ 415238405Sjkimstatic const EVP_CIPHER aesni_##keylen##_##mode = { \ 416280304Sjkim nid##_##keylen##_##mode,blocksize, \ 417280304Sjkim (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \ 418280304Sjkim flags|EVP_CIPH_##MODE##_MODE, \ 419280304Sjkim aesni_##mode##_init_key, \ 420280304Sjkim aesni_##mode##_cipher, \ 421280304Sjkim aes_##mode##_cleanup, \ 422280304Sjkim sizeof(EVP_AES_##MODE##_CTX), \ 423280304Sjkim NULL,NULL,aes_##mode##_ctrl,NULL }; \ 424238405Sjkimstatic const EVP_CIPHER aes_##keylen##_##mode = { \ 425280304Sjkim nid##_##keylen##_##mode,blocksize, \ 426280304Sjkim (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \ 427280304Sjkim flags|EVP_CIPH_##MODE##_MODE, \ 428280304Sjkim aes_##mode##_init_key, \ 429280304Sjkim aes_##mode##_cipher, \ 430280304Sjkim aes_##mode##_cleanup, \ 431280304Sjkim sizeof(EVP_AES_##MODE##_CTX), \ 432280304Sjkim NULL,NULL,aes_##mode##_ctrl,NULL }; \ 433238405Sjkimconst EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ 434238405Sjkim{ return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; } 435238405Sjkim 436280304Sjkim# else 437238405Sjkim 438280304Sjkim# define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \ 439238405Sjkimstatic const EVP_CIPHER aes_##keylen##_##mode = { \ 440280304Sjkim nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \ 441280304Sjkim flags|EVP_CIPH_##MODE##_MODE, \ 442280304Sjkim aes_init_key, \ 443280304Sjkim aes_##mode##_cipher, \ 444280304Sjkim NULL, \ 445280304Sjkim sizeof(EVP_AES_KEY), \ 446280304Sjkim NULL,NULL,NULL,NULL }; \ 447238405Sjkimconst EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ 448238405Sjkim{ return &aes_##keylen##_##mode; } 449238405Sjkim 450280304Sjkim# define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \ 451238405Sjkimstatic const EVP_CIPHER aes_##keylen##_##mode = { \ 452280304Sjkim nid##_##keylen##_##mode,blocksize, \ 453280304Sjkim (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \ 454280304Sjkim flags|EVP_CIPH_##MODE##_MODE, \ 455280304Sjkim aes_##mode##_init_key, \ 456280304Sjkim aes_##mode##_cipher, \ 457280304Sjkim aes_##mode##_cleanup, \ 458280304Sjkim sizeof(EVP_AES_##MODE##_CTX), \ 459280304Sjkim NULL,NULL,aes_##mode##_ctrl,NULL }; \ 460238405Sjkimconst EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ 461238405Sjkim{ return &aes_##keylen##_##mode; } 462280304Sjkim# endif 463238405Sjkim 464280304Sjkim# define BLOCK_CIPHER_generic_pack(nid,keylen,flags) \ 465280304Sjkim BLOCK_CIPHER_generic(nid,keylen,16,16,cbc,cbc,CBC,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \ 466280304Sjkim BLOCK_CIPHER_generic(nid,keylen,16,0,ecb,ecb,ECB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \ 467280304Sjkim BLOCK_CIPHER_generic(nid,keylen,1,16,ofb128,ofb,OFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \ 468280304Sjkim BLOCK_CIPHER_generic(nid,keylen,1,16,cfb128,cfb,CFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \ 469280304Sjkim BLOCK_CIPHER_generic(nid,keylen,1,16,cfb1,cfb1,CFB,flags) \ 470280304Sjkim BLOCK_CIPHER_generic(nid,keylen,1,16,cfb8,cfb8,CFB,flags) \ 471280304Sjkim BLOCK_CIPHER_generic(nid,keylen,1,16,ctr,ctr,CTR,flags) 472238405Sjkim 473109998Smarkmstatic int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 474280304Sjkim const unsigned char *iv, int enc) 475280304Sjkim{ 476280304Sjkim int ret, mode; 477280304Sjkim EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; 478109998Smarkm 479280304Sjkim mode = ctx->cipher->flags & EVP_CIPH_MODE; 480280304Sjkim if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE) 481280304Sjkim && !enc) 482280304Sjkim# ifdef BSAES_CAPABLE 483280304Sjkim if (BSAES_CAPABLE && mode == EVP_CIPH_CBC_MODE) { 484280304Sjkim ret = AES_set_decrypt_key(key, ctx->key_len * 8, &dat->ks); 485280304Sjkim dat->block = (block128_f) AES_decrypt; 486280304Sjkim dat->stream.cbc = (cbc128_f) bsaes_cbc_encrypt; 487280304Sjkim } else 488280304Sjkim# endif 489280304Sjkim# ifdef VPAES_CAPABLE 490280304Sjkim if (VPAES_CAPABLE) { 491280304Sjkim ret = vpaes_set_decrypt_key(key, ctx->key_len * 8, &dat->ks); 492280304Sjkim dat->block = (block128_f) vpaes_decrypt; 493280304Sjkim dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? 494280304Sjkim (cbc128_f) vpaes_cbc_encrypt : NULL; 495280304Sjkim } else 496280304Sjkim# endif 497280304Sjkim { 498280304Sjkim ret = AES_set_decrypt_key(key, ctx->key_len * 8, &dat->ks); 499280304Sjkim dat->block = (block128_f) AES_decrypt; 500280304Sjkim dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? 501280304Sjkim (cbc128_f) AES_cbc_encrypt : NULL; 502280304Sjkim } else 503280304Sjkim# ifdef BSAES_CAPABLE 504280304Sjkim if (BSAES_CAPABLE && mode == EVP_CIPH_CTR_MODE) { 505280304Sjkim ret = AES_set_encrypt_key(key, ctx->key_len * 8, &dat->ks); 506280304Sjkim dat->block = (block128_f) AES_encrypt; 507280304Sjkim dat->stream.ctr = (ctr128_f) bsaes_ctr32_encrypt_blocks; 508280304Sjkim } else 509280304Sjkim# endif 510280304Sjkim# ifdef VPAES_CAPABLE 511280304Sjkim if (VPAES_CAPABLE) { 512280304Sjkim ret = vpaes_set_encrypt_key(key, ctx->key_len * 8, &dat->ks); 513280304Sjkim dat->block = (block128_f) vpaes_encrypt; 514280304Sjkim dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? 515280304Sjkim (cbc128_f) vpaes_cbc_encrypt : NULL; 516280304Sjkim } else 517280304Sjkim# endif 518280304Sjkim { 519280304Sjkim ret = AES_set_encrypt_key(key, ctx->key_len * 8, &dat->ks); 520280304Sjkim dat->block = (block128_f) AES_encrypt; 521280304Sjkim dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? 522280304Sjkim (cbc128_f) AES_cbc_encrypt : NULL; 523280304Sjkim# ifdef AES_CTR_ASM 524280304Sjkim if (mode == EVP_CIPH_CTR_MODE) 525280304Sjkim dat->stream.ctr = (ctr128_f) AES_ctr32_encrypt; 526280304Sjkim# endif 527280304Sjkim } 528109998Smarkm 529280304Sjkim if (ret < 0) { 530280304Sjkim EVPerr(EVP_F_AES_INIT_KEY, EVP_R_AES_KEY_SETUP_FAILED); 531280304Sjkim return 0; 532280304Sjkim } 533142425Snectar 534280304Sjkim return 1; 535280304Sjkim} 536109998Smarkm 537280304Sjkimstatic int aes_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 538280304Sjkim const unsigned char *in, size_t len) 539238405Sjkim{ 540280304Sjkim EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; 541238405Sjkim 542280304Sjkim if (dat->stream.cbc) 543280304Sjkim (*dat->stream.cbc) (in, out, len, &dat->ks, ctx->iv, ctx->encrypt); 544280304Sjkim else if (ctx->encrypt) 545280304Sjkim CRYPTO_cbc128_encrypt(in, out, len, &dat->ks, ctx->iv, dat->block); 546280304Sjkim else 547280304Sjkim CRYPTO_cbc128_encrypt(in, out, len, &dat->ks, ctx->iv, dat->block); 548238405Sjkim 549280304Sjkim return 1; 550238405Sjkim} 551238405Sjkim 552280304Sjkimstatic int aes_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 553280304Sjkim const unsigned char *in, size_t len) 554238405Sjkim{ 555280304Sjkim size_t bl = ctx->cipher->block_size; 556280304Sjkim size_t i; 557280304Sjkim EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; 558238405Sjkim 559280304Sjkim if (len < bl) 560280304Sjkim return 1; 561238405Sjkim 562280304Sjkim for (i = 0, len -= bl; i <= len; i += bl) 563280304Sjkim (*dat->block) (in + i, out + i, &dat->ks); 564238405Sjkim 565280304Sjkim return 1; 566238405Sjkim} 567238405Sjkim 568280304Sjkimstatic int aes_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 569280304Sjkim const unsigned char *in, size_t len) 570238405Sjkim{ 571280304Sjkim EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; 572238405Sjkim 573280304Sjkim CRYPTO_ofb128_encrypt(in, out, len, &dat->ks, 574280304Sjkim ctx->iv, &ctx->num, dat->block); 575280304Sjkim return 1; 576238405Sjkim} 577238405Sjkim 578280304Sjkimstatic int aes_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 579280304Sjkim const unsigned char *in, size_t len) 580238405Sjkim{ 581280304Sjkim EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; 582238405Sjkim 583280304Sjkim CRYPTO_cfb128_encrypt(in, out, len, &dat->ks, 584280304Sjkim ctx->iv, &ctx->num, ctx->encrypt, dat->block); 585280304Sjkim return 1; 586238405Sjkim} 587238405Sjkim 588280304Sjkimstatic int aes_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 589280304Sjkim const unsigned char *in, size_t len) 590238405Sjkim{ 591280304Sjkim EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; 592238405Sjkim 593280304Sjkim CRYPTO_cfb128_8_encrypt(in, out, len, &dat->ks, 594280304Sjkim ctx->iv, &ctx->num, ctx->encrypt, dat->block); 595280304Sjkim return 1; 596238405Sjkim} 597238405Sjkim 598280304Sjkimstatic int aes_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 599280304Sjkim const unsigned char *in, size_t len) 600238405Sjkim{ 601280304Sjkim EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; 602238405Sjkim 603280304Sjkim if (ctx->flags & EVP_CIPH_FLAG_LENGTH_BITS) { 604280304Sjkim CRYPTO_cfb128_1_encrypt(in, out, len, &dat->ks, 605280304Sjkim ctx->iv, &ctx->num, ctx->encrypt, dat->block); 606280304Sjkim return 1; 607280304Sjkim } 608238405Sjkim 609280304Sjkim while (len >= MAXBITCHUNK) { 610280304Sjkim CRYPTO_cfb128_1_encrypt(in, out, MAXBITCHUNK * 8, &dat->ks, 611280304Sjkim ctx->iv, &ctx->num, ctx->encrypt, dat->block); 612280304Sjkim len -= MAXBITCHUNK; 613280304Sjkim } 614280304Sjkim if (len) 615280304Sjkim CRYPTO_cfb128_1_encrypt(in, out, len * 8, &dat->ks, 616280304Sjkim ctx->iv, &ctx->num, ctx->encrypt, dat->block); 617280304Sjkim 618280304Sjkim return 1; 619238405Sjkim} 620238405Sjkim 621280304Sjkimstatic int aes_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 622280304Sjkim const unsigned char *in, size_t len) 623238405Sjkim{ 624280304Sjkim unsigned int num = ctx->num; 625280304Sjkim EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; 626238405Sjkim 627280304Sjkim if (dat->stream.ctr) 628280304Sjkim CRYPTO_ctr128_encrypt_ctr32(in, out, len, &dat->ks, 629280304Sjkim ctx->iv, ctx->buf, &num, dat->stream.ctr); 630280304Sjkim else 631280304Sjkim CRYPTO_ctr128_encrypt(in, out, len, &dat->ks, 632280304Sjkim ctx->iv, ctx->buf, &num, dat->block); 633280304Sjkim ctx->num = (size_t)num; 634280304Sjkim return 1; 635238405Sjkim} 636238405Sjkim 637280304SjkimBLOCK_CIPHER_generic_pack(NID_aes, 128, EVP_CIPH_FLAG_FIPS) 638280304Sjkim BLOCK_CIPHER_generic_pack(NID_aes, 192, EVP_CIPH_FLAG_FIPS) 639280304Sjkim BLOCK_CIPHER_generic_pack(NID_aes, 256, EVP_CIPH_FLAG_FIPS) 640238405Sjkim 641238405Sjkimstatic int aes_gcm_cleanup(EVP_CIPHER_CTX *c) 642280304Sjkim{ 643280304Sjkim EVP_AES_GCM_CTX *gctx = c->cipher_data; 644280304Sjkim OPENSSL_cleanse(&gctx->gcm, sizeof(gctx->gcm)); 645280304Sjkim if (gctx->iv != c->iv) 646280304Sjkim OPENSSL_free(gctx->iv); 647280304Sjkim return 1; 648280304Sjkim} 649238405Sjkim 650238405Sjkim/* increment counter (64-bit int) by 1 */ 651280304Sjkimstatic void ctr64_inc(unsigned char *counter) 652280304Sjkim{ 653280304Sjkim int n = 8; 654280304Sjkim unsigned char c; 655238405Sjkim 656280304Sjkim do { 657280304Sjkim --n; 658280304Sjkim c = counter[n]; 659280304Sjkim ++c; 660280304Sjkim counter[n] = c; 661280304Sjkim if (c) 662280304Sjkim return; 663280304Sjkim } while (n); 664238405Sjkim} 665238405Sjkim 666238405Sjkimstatic int aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) 667280304Sjkim{ 668280304Sjkim EVP_AES_GCM_CTX *gctx = c->cipher_data; 669280304Sjkim switch (type) { 670280304Sjkim case EVP_CTRL_INIT: 671280304Sjkim gctx->key_set = 0; 672280304Sjkim gctx->iv_set = 0; 673280304Sjkim gctx->ivlen = c->cipher->iv_len; 674280304Sjkim gctx->iv = c->iv; 675280304Sjkim gctx->taglen = -1; 676280304Sjkim gctx->iv_gen = 0; 677280304Sjkim gctx->tls_aad_len = -1; 678280304Sjkim return 1; 679238405Sjkim 680280304Sjkim case EVP_CTRL_GCM_SET_IVLEN: 681280304Sjkim if (arg <= 0) 682280304Sjkim return 0; 683280304Sjkim# ifdef OPENSSL_FIPS 684280304Sjkim if (FIPS_module_mode() && !(c->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW) 685280304Sjkim && arg < 12) 686280304Sjkim return 0; 687280304Sjkim# endif 688280304Sjkim /* Allocate memory for IV if needed */ 689280304Sjkim if ((arg > EVP_MAX_IV_LENGTH) && (arg > gctx->ivlen)) { 690280304Sjkim if (gctx->iv != c->iv) 691280304Sjkim OPENSSL_free(gctx->iv); 692280304Sjkim gctx->iv = OPENSSL_malloc(arg); 693280304Sjkim if (!gctx->iv) 694280304Sjkim return 0; 695280304Sjkim } 696280304Sjkim gctx->ivlen = arg; 697280304Sjkim return 1; 698238405Sjkim 699280304Sjkim case EVP_CTRL_GCM_SET_TAG: 700280304Sjkim if (arg <= 0 || arg > 16 || c->encrypt) 701280304Sjkim return 0; 702280304Sjkim memcpy(c->buf, ptr, arg); 703280304Sjkim gctx->taglen = arg; 704280304Sjkim return 1; 705238405Sjkim 706280304Sjkim case EVP_CTRL_GCM_GET_TAG: 707280304Sjkim if (arg <= 0 || arg > 16 || !c->encrypt || gctx->taglen < 0) 708280304Sjkim return 0; 709280304Sjkim memcpy(ptr, c->buf, arg); 710280304Sjkim return 1; 711238405Sjkim 712280304Sjkim case EVP_CTRL_GCM_SET_IV_FIXED: 713280304Sjkim /* Special case: -1 length restores whole IV */ 714280304Sjkim if (arg == -1) { 715280304Sjkim memcpy(gctx->iv, ptr, gctx->ivlen); 716280304Sjkim gctx->iv_gen = 1; 717280304Sjkim return 1; 718280304Sjkim } 719280304Sjkim /* 720280304Sjkim * Fixed field must be at least 4 bytes and invocation field at least 721280304Sjkim * 8. 722280304Sjkim */ 723280304Sjkim if ((arg < 4) || (gctx->ivlen - arg) < 8) 724280304Sjkim return 0; 725280304Sjkim if (arg) 726280304Sjkim memcpy(gctx->iv, ptr, arg); 727280304Sjkim if (c->encrypt && RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0) 728280304Sjkim return 0; 729280304Sjkim gctx->iv_gen = 1; 730280304Sjkim return 1; 731238405Sjkim 732280304Sjkim case EVP_CTRL_GCM_IV_GEN: 733280304Sjkim if (gctx->iv_gen == 0 || gctx->key_set == 0) 734280304Sjkim return 0; 735280304Sjkim CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen); 736280304Sjkim if (arg <= 0 || arg > gctx->ivlen) 737280304Sjkim arg = gctx->ivlen; 738280304Sjkim memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg); 739280304Sjkim /* 740280304Sjkim * Invocation field will be at least 8 bytes in size and so no need 741280304Sjkim * to check wrap around or increment more than last 8 bytes. 742280304Sjkim */ 743280304Sjkim ctr64_inc(gctx->iv + gctx->ivlen - 8); 744280304Sjkim gctx->iv_set = 1; 745280304Sjkim return 1; 746238405Sjkim 747280304Sjkim case EVP_CTRL_GCM_SET_IV_INV: 748280304Sjkim if (gctx->iv_gen == 0 || gctx->key_set == 0 || c->encrypt) 749280304Sjkim return 0; 750280304Sjkim memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg); 751280304Sjkim CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen); 752280304Sjkim gctx->iv_set = 1; 753280304Sjkim return 1; 754238405Sjkim 755280304Sjkim case EVP_CTRL_AEAD_TLS1_AAD: 756280304Sjkim /* Save the AAD for later use */ 757284285Sjkim if (arg != EVP_AEAD_TLS1_AAD_LEN) 758280304Sjkim return 0; 759280304Sjkim memcpy(c->buf, ptr, arg); 760280304Sjkim gctx->tls_aad_len = arg; 761280304Sjkim { 762280304Sjkim unsigned int len = c->buf[arg - 2] << 8 | c->buf[arg - 1]; 763280304Sjkim /* Correct length for explicit IV */ 764280304Sjkim len -= EVP_GCM_TLS_EXPLICIT_IV_LEN; 765280304Sjkim /* If decrypting correct for tag too */ 766280304Sjkim if (!c->encrypt) 767280304Sjkim len -= EVP_GCM_TLS_TAG_LEN; 768280304Sjkim c->buf[arg - 2] = len >> 8; 769280304Sjkim c->buf[arg - 1] = len & 0xff; 770280304Sjkim } 771280304Sjkim /* Extra padding: tag appended to record */ 772280304Sjkim return EVP_GCM_TLS_TAG_LEN; 773238405Sjkim 774280304Sjkim case EVP_CTRL_COPY: 775280304Sjkim { 776280304Sjkim EVP_CIPHER_CTX *out = ptr; 777280304Sjkim EVP_AES_GCM_CTX *gctx_out = out->cipher_data; 778280304Sjkim if (gctx->gcm.key) { 779280304Sjkim if (gctx->gcm.key != &gctx->ks) 780280304Sjkim return 0; 781280304Sjkim gctx_out->gcm.key = &gctx_out->ks; 782280304Sjkim } 783280304Sjkim if (gctx->iv == c->iv) 784280304Sjkim gctx_out->iv = out->iv; 785280304Sjkim else { 786280304Sjkim gctx_out->iv = OPENSSL_malloc(gctx->ivlen); 787280304Sjkim if (!gctx_out->iv) 788280304Sjkim return 0; 789280304Sjkim memcpy(gctx_out->iv, gctx->iv, gctx->ivlen); 790280304Sjkim } 791280304Sjkim return 1; 792280304Sjkim } 793269686Sjkim 794280304Sjkim default: 795280304Sjkim return -1; 796238405Sjkim 797280304Sjkim } 798280304Sjkim} 799238405Sjkim 800238405Sjkimstatic int aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 801280304Sjkim const unsigned char *iv, int enc) 802280304Sjkim{ 803280304Sjkim EVP_AES_GCM_CTX *gctx = ctx->cipher_data; 804280304Sjkim if (!iv && !key) 805280304Sjkim return 1; 806280304Sjkim if (key) { 807280304Sjkim do { 808280304Sjkim# ifdef BSAES_CAPABLE 809280304Sjkim if (BSAES_CAPABLE) { 810280304Sjkim AES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks); 811280304Sjkim CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, 812280304Sjkim (block128_f) AES_encrypt); 813280304Sjkim gctx->ctr = (ctr128_f) bsaes_ctr32_encrypt_blocks; 814280304Sjkim break; 815280304Sjkim } else 816280304Sjkim# endif 817280304Sjkim# ifdef VPAES_CAPABLE 818280304Sjkim if (VPAES_CAPABLE) { 819280304Sjkim vpaes_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks); 820280304Sjkim CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, 821280304Sjkim (block128_f) vpaes_encrypt); 822280304Sjkim gctx->ctr = NULL; 823280304Sjkim break; 824280304Sjkim } else 825280304Sjkim# endif 826280304Sjkim (void)0; /* terminate potentially open 'else' */ 827264331Sjkim 828280304Sjkim AES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks); 829280304Sjkim CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, 830280304Sjkim (block128_f) AES_encrypt); 831280304Sjkim# ifdef AES_CTR_ASM 832280304Sjkim gctx->ctr = (ctr128_f) AES_ctr32_encrypt; 833280304Sjkim# else 834280304Sjkim gctx->ctr = NULL; 835280304Sjkim# endif 836280304Sjkim } while (0); 837238405Sjkim 838280304Sjkim /* 839280304Sjkim * If we have an iv can set it directly, otherwise use saved IV. 840280304Sjkim */ 841280304Sjkim if (iv == NULL && gctx->iv_set) 842280304Sjkim iv = gctx->iv; 843280304Sjkim if (iv) { 844280304Sjkim CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); 845280304Sjkim gctx->iv_set = 1; 846280304Sjkim } 847280304Sjkim gctx->key_set = 1; 848280304Sjkim } else { 849280304Sjkim /* If key set use IV, otherwise copy */ 850280304Sjkim if (gctx->key_set) 851280304Sjkim CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); 852280304Sjkim else 853280304Sjkim memcpy(gctx->iv, iv, gctx->ivlen); 854280304Sjkim gctx->iv_set = 1; 855280304Sjkim gctx->iv_gen = 0; 856280304Sjkim } 857280304Sjkim return 1; 858280304Sjkim} 859238405Sjkim 860280304Sjkim/* 861280304Sjkim * Handle TLS GCM packet format. This consists of the last portion of the IV 862238405Sjkim * followed by the payload and finally the tag. On encrypt generate IV, 863238405Sjkim * encrypt payload and write the tag. On verify retrieve IV, decrypt payload 864238405Sjkim * and verify tag. 865238405Sjkim */ 866238405Sjkim 867238405Sjkimstatic int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 868280304Sjkim const unsigned char *in, size_t len) 869280304Sjkim{ 870280304Sjkim EVP_AES_GCM_CTX *gctx = ctx->cipher_data; 871280304Sjkim int rv = -1; 872280304Sjkim /* Encrypt/decrypt must be performed in place */ 873280304Sjkim if (out != in 874280304Sjkim || len < (EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN)) 875280304Sjkim return -1; 876280304Sjkim /* 877280304Sjkim * Set IV from start of buffer or generate IV and write to start of 878280304Sjkim * buffer. 879280304Sjkim */ 880280304Sjkim if (EVP_CIPHER_CTX_ctrl(ctx, ctx->encrypt ? 881280304Sjkim EVP_CTRL_GCM_IV_GEN : EVP_CTRL_GCM_SET_IV_INV, 882280304Sjkim EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0) 883280304Sjkim goto err; 884280304Sjkim /* Use saved AAD */ 885280304Sjkim if (CRYPTO_gcm128_aad(&gctx->gcm, ctx->buf, gctx->tls_aad_len)) 886280304Sjkim goto err; 887280304Sjkim /* Fix buffer and length to point to payload */ 888280304Sjkim in += EVP_GCM_TLS_EXPLICIT_IV_LEN; 889280304Sjkim out += EVP_GCM_TLS_EXPLICIT_IV_LEN; 890280304Sjkim len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN; 891280304Sjkim if (ctx->encrypt) { 892280304Sjkim /* Encrypt payload */ 893280304Sjkim if (gctx->ctr) { 894280304Sjkim if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm, 895280304Sjkim in, out, len, gctx->ctr)) 896280304Sjkim goto err; 897280304Sjkim } else { 898280304Sjkim if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, len)) 899280304Sjkim goto err; 900280304Sjkim } 901280304Sjkim out += len; 902280304Sjkim /* Finally write tag */ 903280304Sjkim CRYPTO_gcm128_tag(&gctx->gcm, out, EVP_GCM_TLS_TAG_LEN); 904280304Sjkim rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN; 905280304Sjkim } else { 906280304Sjkim /* Decrypt */ 907280304Sjkim if (gctx->ctr) { 908280304Sjkim if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm, 909280304Sjkim in, out, len, gctx->ctr)) 910280304Sjkim goto err; 911280304Sjkim } else { 912280304Sjkim if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, len)) 913280304Sjkim goto err; 914280304Sjkim } 915280304Sjkim /* Retrieve tag */ 916280304Sjkim CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, EVP_GCM_TLS_TAG_LEN); 917280304Sjkim /* If tag mismatch wipe buffer */ 918284285Sjkim if (CRYPTO_memcmp(ctx->buf, in + len, EVP_GCM_TLS_TAG_LEN)) { 919280304Sjkim OPENSSL_cleanse(out, len); 920280304Sjkim goto err; 921280304Sjkim } 922280304Sjkim rv = len; 923280304Sjkim } 924238405Sjkim 925280304Sjkim err: 926280304Sjkim gctx->iv_set = 0; 927280304Sjkim gctx->tls_aad_len = -1; 928280304Sjkim return rv; 929280304Sjkim} 930238405Sjkim 931238405Sjkimstatic int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 932280304Sjkim const unsigned char *in, size_t len) 933280304Sjkim{ 934280304Sjkim EVP_AES_GCM_CTX *gctx = ctx->cipher_data; 935280304Sjkim /* If not set up, return error */ 936280304Sjkim if (!gctx->key_set) 937280304Sjkim return -1; 938238405Sjkim 939280304Sjkim if (gctx->tls_aad_len >= 0) 940280304Sjkim return aes_gcm_tls_cipher(ctx, out, in, len); 941238405Sjkim 942280304Sjkim if (!gctx->iv_set) 943280304Sjkim return -1; 944280304Sjkim if (in) { 945280304Sjkim if (out == NULL) { 946280304Sjkim if (CRYPTO_gcm128_aad(&gctx->gcm, in, len)) 947280304Sjkim return -1; 948280304Sjkim } else if (ctx->encrypt) { 949280304Sjkim if (gctx->ctr) { 950280304Sjkim if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm, 951280304Sjkim in, out, len, gctx->ctr)) 952280304Sjkim return -1; 953280304Sjkim } else { 954280304Sjkim if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, len)) 955280304Sjkim return -1; 956280304Sjkim } 957280304Sjkim } else { 958280304Sjkim if (gctx->ctr) { 959280304Sjkim if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm, 960280304Sjkim in, out, len, gctx->ctr)) 961280304Sjkim return -1; 962280304Sjkim } else { 963280304Sjkim if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, len)) 964280304Sjkim return -1; 965280304Sjkim } 966280304Sjkim } 967280304Sjkim return len; 968280304Sjkim } else { 969280304Sjkim if (!ctx->encrypt) { 970280304Sjkim if (gctx->taglen < 0) 971280304Sjkim return -1; 972280304Sjkim if (CRYPTO_gcm128_finish(&gctx->gcm, ctx->buf, gctx->taglen) != 0) 973280304Sjkim return -1; 974280304Sjkim gctx->iv_set = 0; 975280304Sjkim return 0; 976280304Sjkim } 977280304Sjkim CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, 16); 978280304Sjkim gctx->taglen = 16; 979280304Sjkim /* Don't reuse the IV */ 980280304Sjkim gctx->iv_set = 0; 981280304Sjkim return 0; 982280304Sjkim } 983238405Sjkim 984280304Sjkim} 985238405Sjkim 986280304Sjkim# define CUSTOM_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 \ 987280304Sjkim | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \ 988280304Sjkim | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT \ 989280304Sjkim | EVP_CIPH_CUSTOM_COPY) 990238405Sjkim 991280304SjkimBLOCK_CIPHER_custom(NID_aes, 128, 1, 12, gcm, GCM, 992280304Sjkim EVP_CIPH_FLAG_FIPS | EVP_CIPH_FLAG_AEAD_CIPHER | 993280304Sjkim CUSTOM_FLAGS) 994280304Sjkim BLOCK_CIPHER_custom(NID_aes, 192, 1, 12, gcm, GCM, 995280304Sjkim EVP_CIPH_FLAG_FIPS | EVP_CIPH_FLAG_AEAD_CIPHER | 996280304Sjkim CUSTOM_FLAGS) 997280304Sjkim BLOCK_CIPHER_custom(NID_aes, 256, 1, 12, gcm, GCM, 998280304Sjkim EVP_CIPH_FLAG_FIPS | EVP_CIPH_FLAG_AEAD_CIPHER | 999280304Sjkim CUSTOM_FLAGS) 1000238405Sjkim 1001238405Sjkimstatic int aes_xts_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) 1002280304Sjkim{ 1003280304Sjkim EVP_AES_XTS_CTX *xctx = c->cipher_data; 1004280304Sjkim if (type == EVP_CTRL_COPY) { 1005280304Sjkim EVP_CIPHER_CTX *out = ptr; 1006280304Sjkim EVP_AES_XTS_CTX *xctx_out = out->cipher_data; 1007280304Sjkim if (xctx->xts.key1) { 1008280304Sjkim if (xctx->xts.key1 != &xctx->ks1) 1009280304Sjkim return 0; 1010280304Sjkim xctx_out->xts.key1 = &xctx_out->ks1; 1011280304Sjkim } 1012280304Sjkim if (xctx->xts.key2) { 1013280304Sjkim if (xctx->xts.key2 != &xctx->ks2) 1014280304Sjkim return 0; 1015280304Sjkim xctx_out->xts.key2 = &xctx_out->ks2; 1016280304Sjkim } 1017280304Sjkim return 1; 1018280304Sjkim } else if (type != EVP_CTRL_INIT) 1019280304Sjkim return -1; 1020280304Sjkim /* key1 and key2 are used as an indicator both key and IV are set */ 1021280304Sjkim xctx->xts.key1 = NULL; 1022280304Sjkim xctx->xts.key2 = NULL; 1023280304Sjkim return 1; 1024280304Sjkim} 1025238405Sjkim 1026238405Sjkimstatic int aes_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 1027280304Sjkim const unsigned char *iv, int enc) 1028280304Sjkim{ 1029280304Sjkim EVP_AES_XTS_CTX *xctx = ctx->cipher_data; 1030280304Sjkim if (!iv && !key) 1031280304Sjkim return 1; 1032238405Sjkim 1033280304Sjkim if (key) 1034280304Sjkim do { 1035280304Sjkim# ifdef AES_XTS_ASM 1036280304Sjkim xctx->stream = enc ? AES_xts_encrypt : AES_xts_decrypt; 1037280304Sjkim# else 1038280304Sjkim xctx->stream = NULL; 1039280304Sjkim# endif 1040280304Sjkim /* key_len is two AES keys */ 1041280304Sjkim# ifdef BSAES_CAPABLE 1042280304Sjkim if (BSAES_CAPABLE) 1043280304Sjkim xctx->stream = enc ? bsaes_xts_encrypt : bsaes_xts_decrypt; 1044280304Sjkim else 1045280304Sjkim# endif 1046280304Sjkim# ifdef VPAES_CAPABLE 1047280304Sjkim if (VPAES_CAPABLE) { 1048280304Sjkim if (enc) { 1049280304Sjkim vpaes_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1); 1050280304Sjkim xctx->xts.block1 = (block128_f) vpaes_encrypt; 1051280304Sjkim } else { 1052280304Sjkim vpaes_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1); 1053280304Sjkim xctx->xts.block1 = (block128_f) vpaes_decrypt; 1054280304Sjkim } 1055238405Sjkim 1056280304Sjkim vpaes_set_encrypt_key(key + ctx->key_len / 2, 1057280304Sjkim ctx->key_len * 4, &xctx->ks2); 1058280304Sjkim xctx->xts.block2 = (block128_f) vpaes_encrypt; 1059238405Sjkim 1060280304Sjkim xctx->xts.key1 = &xctx->ks1; 1061280304Sjkim break; 1062280304Sjkim } else 1063280304Sjkim# endif 1064280304Sjkim (void)0; /* terminate potentially open 'else' */ 1065264331Sjkim 1066280304Sjkim if (enc) { 1067280304Sjkim AES_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1); 1068280304Sjkim xctx->xts.block1 = (block128_f) AES_encrypt; 1069280304Sjkim } else { 1070280304Sjkim AES_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1); 1071280304Sjkim xctx->xts.block1 = (block128_f) AES_decrypt; 1072280304Sjkim } 1073238405Sjkim 1074280304Sjkim AES_set_encrypt_key(key + ctx->key_len / 2, 1075280304Sjkim ctx->key_len * 4, &xctx->ks2); 1076280304Sjkim xctx->xts.block2 = (block128_f) AES_encrypt; 1077238405Sjkim 1078280304Sjkim xctx->xts.key1 = &xctx->ks1; 1079280304Sjkim } while (0); 1080238405Sjkim 1081280304Sjkim if (iv) { 1082280304Sjkim xctx->xts.key2 = &xctx->ks2; 1083280304Sjkim memcpy(ctx->iv, iv, 16); 1084280304Sjkim } 1085238405Sjkim 1086280304Sjkim return 1; 1087280304Sjkim} 1088238405Sjkim 1089238405Sjkimstatic int aes_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 1090280304Sjkim const unsigned char *in, size_t len) 1091280304Sjkim{ 1092280304Sjkim EVP_AES_XTS_CTX *xctx = ctx->cipher_data; 1093280304Sjkim if (!xctx->xts.key1 || !xctx->xts.key2) 1094280304Sjkim return 0; 1095280304Sjkim if (!out || !in || len < AES_BLOCK_SIZE) 1096280304Sjkim return 0; 1097280304Sjkim# ifdef OPENSSL_FIPS 1098280304Sjkim /* Requirement of SP800-38E */ 1099280304Sjkim if (FIPS_module_mode() && !(ctx->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW) && 1100280304Sjkim (len > (1UL << 20) * 16)) { 1101280304Sjkim EVPerr(EVP_F_AES_XTS_CIPHER, EVP_R_TOO_LARGE); 1102280304Sjkim return 0; 1103280304Sjkim } 1104280304Sjkim# endif 1105280304Sjkim if (xctx->stream) 1106280304Sjkim (*xctx->stream) (in, out, len, 1107280304Sjkim xctx->xts.key1, xctx->xts.key2, ctx->iv); 1108280304Sjkim else if (CRYPTO_xts128_encrypt(&xctx->xts, ctx->iv, in, out, len, 1109280304Sjkim ctx->encrypt)) 1110280304Sjkim return 0; 1111280304Sjkim return 1; 1112280304Sjkim} 1113238405Sjkim 1114280304Sjkim# define aes_xts_cleanup NULL 1115238405Sjkim 1116280304Sjkim# define XTS_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 | EVP_CIPH_CUSTOM_IV \ 1117280304Sjkim | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT \ 1118280304Sjkim | EVP_CIPH_CUSTOM_COPY) 1119238405Sjkim 1120280304SjkimBLOCK_CIPHER_custom(NID_aes, 128, 1, 16, xts, XTS, 1121280304Sjkim EVP_CIPH_FLAG_FIPS | XTS_FLAGS) 1122280304Sjkim BLOCK_CIPHER_custom(NID_aes, 256, 1, 16, xts, XTS, 1123280304Sjkim EVP_CIPH_FLAG_FIPS | XTS_FLAGS) 1124238405Sjkim 1125238405Sjkimstatic int aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) 1126280304Sjkim{ 1127280304Sjkim EVP_AES_CCM_CTX *cctx = c->cipher_data; 1128280304Sjkim switch (type) { 1129280304Sjkim case EVP_CTRL_INIT: 1130280304Sjkim cctx->key_set = 0; 1131280304Sjkim cctx->iv_set = 0; 1132280304Sjkim cctx->L = 8; 1133280304Sjkim cctx->M = 12; 1134280304Sjkim cctx->tag_set = 0; 1135280304Sjkim cctx->len_set = 0; 1136280304Sjkim return 1; 1137238405Sjkim 1138280304Sjkim case EVP_CTRL_CCM_SET_IVLEN: 1139280304Sjkim arg = 15 - arg; 1140280304Sjkim case EVP_CTRL_CCM_SET_L: 1141280304Sjkim if (arg < 2 || arg > 8) 1142280304Sjkim return 0; 1143280304Sjkim cctx->L = arg; 1144280304Sjkim return 1; 1145238405Sjkim 1146280304Sjkim case EVP_CTRL_CCM_SET_TAG: 1147280304Sjkim if ((arg & 1) || arg < 4 || arg > 16) 1148280304Sjkim return 0; 1149285330Sjkim if (c->encrypt && ptr) 1150280304Sjkim return 0; 1151280304Sjkim if (ptr) { 1152280304Sjkim cctx->tag_set = 1; 1153280304Sjkim memcpy(c->buf, ptr, arg); 1154280304Sjkim } 1155280304Sjkim cctx->M = arg; 1156280304Sjkim return 1; 1157238405Sjkim 1158280304Sjkim case EVP_CTRL_CCM_GET_TAG: 1159280304Sjkim if (!c->encrypt || !cctx->tag_set) 1160280304Sjkim return 0; 1161280304Sjkim if (!CRYPTO_ccm128_tag(&cctx->ccm, ptr, (size_t)arg)) 1162280304Sjkim return 0; 1163280304Sjkim cctx->tag_set = 0; 1164280304Sjkim cctx->iv_set = 0; 1165280304Sjkim cctx->len_set = 0; 1166280304Sjkim return 1; 1167238405Sjkim 1168280304Sjkim case EVP_CTRL_COPY: 1169280304Sjkim { 1170280304Sjkim EVP_CIPHER_CTX *out = ptr; 1171280304Sjkim EVP_AES_CCM_CTX *cctx_out = out->cipher_data; 1172280304Sjkim if (cctx->ccm.key) { 1173280304Sjkim if (cctx->ccm.key != &cctx->ks) 1174280304Sjkim return 0; 1175280304Sjkim cctx_out->ccm.key = &cctx_out->ks; 1176280304Sjkim } 1177280304Sjkim return 1; 1178280304Sjkim } 1179269686Sjkim 1180280304Sjkim default: 1181280304Sjkim return -1; 1182238405Sjkim 1183280304Sjkim } 1184280304Sjkim} 1185238405Sjkim 1186238405Sjkimstatic int aes_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 1187280304Sjkim const unsigned char *iv, int enc) 1188280304Sjkim{ 1189280304Sjkim EVP_AES_CCM_CTX *cctx = ctx->cipher_data; 1190280304Sjkim if (!iv && !key) 1191280304Sjkim return 1; 1192280304Sjkim if (key) 1193280304Sjkim do { 1194280304Sjkim# ifdef VPAES_CAPABLE 1195280304Sjkim if (VPAES_CAPABLE) { 1196280304Sjkim vpaes_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks); 1197280304Sjkim CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, 1198280304Sjkim &cctx->ks, (block128_f) vpaes_encrypt); 1199280304Sjkim cctx->str = NULL; 1200280304Sjkim cctx->key_set = 1; 1201280304Sjkim break; 1202280304Sjkim } 1203280304Sjkim# endif 1204280304Sjkim AES_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks); 1205280304Sjkim CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, 1206280304Sjkim &cctx->ks, (block128_f) AES_encrypt); 1207280304Sjkim cctx->str = NULL; 1208280304Sjkim cctx->key_set = 1; 1209280304Sjkim } while (0); 1210280304Sjkim if (iv) { 1211280304Sjkim memcpy(ctx->iv, iv, 15 - cctx->L); 1212280304Sjkim cctx->iv_set = 1; 1213280304Sjkim } 1214280304Sjkim return 1; 1215280304Sjkim} 1216238405Sjkim 1217238405Sjkimstatic int aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 1218280304Sjkim const unsigned char *in, size_t len) 1219280304Sjkim{ 1220280304Sjkim EVP_AES_CCM_CTX *cctx = ctx->cipher_data; 1221280304Sjkim CCM128_CONTEXT *ccm = &cctx->ccm; 1222280304Sjkim /* If not set up, return error */ 1223280304Sjkim if (!cctx->iv_set && !cctx->key_set) 1224280304Sjkim return -1; 1225280304Sjkim if (!ctx->encrypt && !cctx->tag_set) 1226280304Sjkim return -1; 1227280304Sjkim if (!out) { 1228280304Sjkim if (!in) { 1229280304Sjkim if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L, len)) 1230280304Sjkim return -1; 1231280304Sjkim cctx->len_set = 1; 1232280304Sjkim return len; 1233280304Sjkim } 1234280304Sjkim /* If have AAD need message length */ 1235280304Sjkim if (!cctx->len_set && len) 1236280304Sjkim return -1; 1237280304Sjkim CRYPTO_ccm128_aad(ccm, in, len); 1238280304Sjkim return len; 1239280304Sjkim } 1240280304Sjkim /* EVP_*Final() doesn't return any data */ 1241280304Sjkim if (!in) 1242280304Sjkim return 0; 1243280304Sjkim /* If not set length yet do it */ 1244280304Sjkim if (!cctx->len_set) { 1245280304Sjkim if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L, len)) 1246280304Sjkim return -1; 1247280304Sjkim cctx->len_set = 1; 1248280304Sjkim } 1249280304Sjkim if (ctx->encrypt) { 1250280304Sjkim if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len, 1251280304Sjkim cctx->str) : 1252280304Sjkim CRYPTO_ccm128_encrypt(ccm, in, out, len)) 1253280304Sjkim return -1; 1254280304Sjkim cctx->tag_set = 1; 1255280304Sjkim return len; 1256280304Sjkim } else { 1257280304Sjkim int rv = -1; 1258280304Sjkim if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len, 1259280304Sjkim cctx->str) : 1260280304Sjkim !CRYPTO_ccm128_decrypt(ccm, in, out, len)) { 1261280304Sjkim unsigned char tag[16]; 1262280304Sjkim if (CRYPTO_ccm128_tag(ccm, tag, cctx->M)) { 1263284285Sjkim if (!CRYPTO_memcmp(tag, ctx->buf, cctx->M)) 1264280304Sjkim rv = len; 1265280304Sjkim } 1266280304Sjkim } 1267280304Sjkim if (rv == -1) 1268280304Sjkim OPENSSL_cleanse(out, len); 1269280304Sjkim cctx->iv_set = 0; 1270280304Sjkim cctx->tag_set = 0; 1271280304Sjkim cctx->len_set = 0; 1272280304Sjkim return rv; 1273280304Sjkim } 1274238405Sjkim 1275280304Sjkim} 1276238405Sjkim 1277280304Sjkim# define aes_ccm_cleanup NULL 1278238405Sjkim 1279280304SjkimBLOCK_CIPHER_custom(NID_aes, 128, 1, 12, ccm, CCM, 1280280304Sjkim EVP_CIPH_FLAG_FIPS | CUSTOM_FLAGS) 1281280304Sjkim BLOCK_CIPHER_custom(NID_aes, 192, 1, 12, ccm, CCM, 1282280304Sjkim EVP_CIPH_FLAG_FIPS | CUSTOM_FLAGS) 1283280304Sjkim BLOCK_CIPHER_custom(NID_aes, 256, 1, 12, ccm, CCM, 1284280304Sjkim EVP_CIPH_FLAG_FIPS | CUSTOM_FLAGS) 1285280304Sjkim# endif 1286238405Sjkim#endif 1287