Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 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 | #include <string.h> |
| 50 | |
| 51 | #include <openssl/aead.h> |
| 52 | #include <openssl/aes.h> |
| 53 | #include <openssl/cipher.h> |
| 54 | #include <openssl/cpu.h> |
| 55 | #include <openssl/err.h> |
| 56 | #include <openssl/mem.h> |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame] | 57 | #include <openssl/nid.h> |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 58 | #include <openssl/rand.h> |
| 59 | |
| 60 | #include "internal.h" |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 61 | #include "../../internal.h" |
| 62 | #include "../aes/internal.h" |
| 63 | #include "../modes/internal.h" |
| 64 | #include "../delocate.h" |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 65 | |
| 66 | #if defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64) |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 67 | #include <openssl/arm_arch.h> |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 68 | #endif |
| 69 | |
| 70 | |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame^] | 71 | OPENSSL_MSVC_PRAGMA(warning(disable: 4702)) // Unreachable code. |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame] | 72 | |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 73 | typedef struct { |
| 74 | union { |
| 75 | double align; |
| 76 | AES_KEY ks; |
| 77 | } ks; |
| 78 | block128_f block; |
| 79 | union { |
| 80 | cbc128_f cbc; |
| 81 | ctr128_f ctr; |
| 82 | } stream; |
| 83 | } EVP_AES_KEY; |
| 84 | |
| 85 | typedef struct { |
| 86 | union { |
| 87 | double align; |
| 88 | AES_KEY ks; |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame^] | 89 | } ks; // AES key schedule to use |
| 90 | int key_set; // Set if key initialised |
| 91 | int iv_set; // Set if an iv is set |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 92 | GCM128_CONTEXT gcm; |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame^] | 93 | uint8_t *iv; // Temporary IV store |
| 94 | int ivlen; // IV length |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 95 | int taglen; |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame^] | 96 | int iv_gen; // It is OK to generate IVs |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 97 | ctr128_f ctr; |
| 98 | } EVP_AES_GCM_CTX; |
| 99 | |
| 100 | #if !defined(OPENSSL_NO_ASM) && \ |
| 101 | (defined(OPENSSL_X86_64) || defined(OPENSSL_X86)) |
| 102 | #define VPAES |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 103 | static char vpaes_capable(void) { |
| 104 | return (OPENSSL_ia32cap_P[1] & (1 << (41 - 32))) != 0; |
| 105 | } |
| 106 | |
| 107 | #if defined(OPENSSL_X86_64) |
| 108 | #define BSAES |
| 109 | static char bsaes_capable(void) { |
| 110 | return vpaes_capable(); |
| 111 | } |
| 112 | #endif |
| 113 | |
| 114 | #elif !defined(OPENSSL_NO_ASM) && \ |
| 115 | (defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64)) |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 116 | |
Adam Langley | f4e4272 | 2015-06-04 17:45:09 -0700 | [diff] [blame] | 117 | #if defined(OPENSSL_ARM) && __ARM_MAX_ARCH__ >= 7 |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 118 | #define BSAES |
| 119 | static char bsaes_capable(void) { |
| 120 | return CRYPTO_is_NEON_capable(); |
| 121 | } |
| 122 | #endif |
| 123 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 124 | #endif |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 125 | |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 126 | |
| 127 | #if defined(BSAES) |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame^] | 128 | // On platforms where BSAES gets defined (just above), then these functions are |
| 129 | // provided by asm. |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 130 | void bsaes_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t length, |
| 131 | const AES_KEY *key, uint8_t ivec[16], int enc); |
| 132 | void bsaes_ctr32_encrypt_blocks(const uint8_t *in, uint8_t *out, size_t len, |
| 133 | const AES_KEY *key, const uint8_t ivec[16]); |
| 134 | #else |
| 135 | static char bsaes_capable(void) { |
| 136 | return 0; |
| 137 | } |
| 138 | |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame^] | 139 | // On other platforms, bsaes_capable() will always return false and so the |
| 140 | // following will never be called. |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 141 | static void bsaes_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t length, |
| 142 | const AES_KEY *key, uint8_t ivec[16], int enc) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 143 | abort(); |
| 144 | } |
| 145 | |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 146 | static void bsaes_ctr32_encrypt_blocks(const uint8_t *in, uint8_t *out, |
| 147 | size_t len, const AES_KEY *key, |
| 148 | const uint8_t ivec[16]) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 149 | abort(); |
| 150 | } |
| 151 | #endif |
| 152 | |
| 153 | #if defined(VPAES) |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame^] | 154 | // On platforms where VPAES gets defined (just above), then these functions are |
| 155 | // provided by asm. |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 156 | int vpaes_set_encrypt_key(const uint8_t *userKey, int bits, AES_KEY *key); |
| 157 | int vpaes_set_decrypt_key(const uint8_t *userKey, int bits, AES_KEY *key); |
| 158 | |
| 159 | void vpaes_encrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key); |
| 160 | void vpaes_decrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key); |
| 161 | |
| 162 | void vpaes_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t length, |
| 163 | const AES_KEY *key, uint8_t *ivec, int enc); |
| 164 | #else |
| 165 | static char vpaes_capable(void) { |
| 166 | return 0; |
| 167 | } |
| 168 | |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame^] | 169 | // On other platforms, vpaes_capable() will always return false and so the |
| 170 | // following will never be called. |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 171 | static int vpaes_set_encrypt_key(const uint8_t *userKey, int bits, |
| 172 | AES_KEY *key) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 173 | abort(); |
| 174 | } |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 175 | static int vpaes_set_decrypt_key(const uint8_t *userKey, int bits, |
| 176 | AES_KEY *key) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 177 | abort(); |
| 178 | } |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 179 | static void vpaes_encrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 180 | abort(); |
| 181 | } |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 182 | static void vpaes_decrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 183 | abort(); |
| 184 | } |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 185 | static void vpaes_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t length, |
| 186 | const AES_KEY *key, uint8_t *ivec, int enc) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 187 | abort(); |
| 188 | } |
| 189 | #endif |
| 190 | |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 191 | #if !defined(OPENSSL_NO_ASM) && \ |
| 192 | (defined(OPENSSL_X86_64) || defined(OPENSSL_X86)) |
| 193 | int aesni_set_encrypt_key(const uint8_t *userKey, int bits, AES_KEY *key); |
| 194 | int aesni_set_decrypt_key(const uint8_t *userKey, int bits, AES_KEY *key); |
| 195 | |
| 196 | void aesni_encrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key); |
| 197 | void aesni_decrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key); |
| 198 | |
| 199 | void aesni_ecb_encrypt(const uint8_t *in, uint8_t *out, size_t length, |
| 200 | const AES_KEY *key, int enc); |
| 201 | void aesni_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t length, |
| 202 | const AES_KEY *key, uint8_t *ivec, int enc); |
| 203 | |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 204 | #else |
| 205 | |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame^] | 206 | // On other platforms, aesni_capable() will always return false and so the |
| 207 | // following will never be called. |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 208 | static void aesni_encrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 209 | abort(); |
| 210 | } |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 211 | static int aesni_set_encrypt_key(const uint8_t *userKey, int bits, |
| 212 | AES_KEY *key) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 213 | abort(); |
| 214 | } |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 215 | static void aesni_ctr32_encrypt_blocks(const uint8_t *in, uint8_t *out, |
| 216 | size_t blocks, const void *key, |
| 217 | const uint8_t *ivec) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 218 | abort(); |
| 219 | } |
| 220 | |
| 221 | #endif |
| 222 | |
| 223 | static int aes_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key, |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame] | 224 | const uint8_t *iv, int enc) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 225 | int ret, mode; |
| 226 | EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data; |
| 227 | |
| 228 | mode = ctx->cipher->flags & EVP_CIPH_MODE_MASK; |
| 229 | if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE) && !enc) { |
| 230 | if (hwaes_capable()) { |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 231 | ret = aes_hw_set_decrypt_key(key, ctx->key_len * 8, &dat->ks.ks); |
| 232 | dat->block = (block128_f)aes_hw_decrypt; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 233 | dat->stream.cbc = NULL; |
| 234 | if (mode == EVP_CIPH_CBC_MODE) { |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 235 | dat->stream.cbc = (cbc128_f)aes_hw_cbc_encrypt; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 236 | } |
| 237 | } else if (bsaes_capable() && mode == EVP_CIPH_CBC_MODE) { |
| 238 | ret = AES_set_decrypt_key(key, ctx->key_len * 8, &dat->ks.ks); |
| 239 | dat->block = (block128_f)AES_decrypt; |
| 240 | dat->stream.cbc = (cbc128_f)bsaes_cbc_encrypt; |
| 241 | } else if (vpaes_capable()) { |
| 242 | ret = vpaes_set_decrypt_key(key, ctx->key_len * 8, &dat->ks.ks); |
| 243 | dat->block = (block128_f)vpaes_decrypt; |
| 244 | dat->stream.cbc = |
| 245 | mode == EVP_CIPH_CBC_MODE ? (cbc128_f)vpaes_cbc_encrypt : NULL; |
| 246 | } else { |
| 247 | ret = AES_set_decrypt_key(key, ctx->key_len * 8, &dat->ks.ks); |
| 248 | dat->block = (block128_f)AES_decrypt; |
| 249 | dat->stream.cbc = |
| 250 | mode == EVP_CIPH_CBC_MODE ? (cbc128_f)AES_cbc_encrypt : NULL; |
| 251 | } |
| 252 | } else if (hwaes_capable()) { |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 253 | ret = aes_hw_set_encrypt_key(key, ctx->key_len * 8, &dat->ks.ks); |
| 254 | dat->block = (block128_f)aes_hw_encrypt; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 255 | dat->stream.cbc = NULL; |
| 256 | if (mode == EVP_CIPH_CBC_MODE) { |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 257 | dat->stream.cbc = (cbc128_f)aes_hw_cbc_encrypt; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 258 | } else if (mode == EVP_CIPH_CTR_MODE) { |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 259 | dat->stream.ctr = (ctr128_f)aes_hw_ctr32_encrypt_blocks; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 260 | } |
| 261 | } else if (bsaes_capable() && mode == EVP_CIPH_CTR_MODE) { |
| 262 | ret = AES_set_encrypt_key(key, ctx->key_len * 8, &dat->ks.ks); |
| 263 | dat->block = (block128_f)AES_encrypt; |
| 264 | dat->stream.ctr = (ctr128_f)bsaes_ctr32_encrypt_blocks; |
| 265 | } else if (vpaes_capable()) { |
| 266 | ret = vpaes_set_encrypt_key(key, ctx->key_len * 8, &dat->ks.ks); |
| 267 | dat->block = (block128_f)vpaes_encrypt; |
| 268 | dat->stream.cbc = |
| 269 | mode == EVP_CIPH_CBC_MODE ? (cbc128_f)vpaes_cbc_encrypt : NULL; |
| 270 | } else { |
| 271 | ret = AES_set_encrypt_key(key, ctx->key_len * 8, &dat->ks.ks); |
| 272 | dat->block = (block128_f)AES_encrypt; |
| 273 | dat->stream.cbc = |
| 274 | mode == EVP_CIPH_CBC_MODE ? (cbc128_f)AES_cbc_encrypt : NULL; |
| 275 | } |
| 276 | |
| 277 | if (ret < 0) { |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 278 | OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_AES_KEY_SETUP_FAILED); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 279 | return 0; |
| 280 | } |
| 281 | |
| 282 | return 1; |
| 283 | } |
| 284 | |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 285 | static int aes_cbc_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in, |
| 286 | size_t len) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 287 | EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data; |
| 288 | |
| 289 | if (dat->stream.cbc) { |
| 290 | (*dat->stream.cbc)(in, out, len, &dat->ks, ctx->iv, ctx->encrypt); |
| 291 | } else if (ctx->encrypt) { |
| 292 | CRYPTO_cbc128_encrypt(in, out, len, &dat->ks, ctx->iv, dat->block); |
| 293 | } else { |
| 294 | CRYPTO_cbc128_decrypt(in, out, len, &dat->ks, ctx->iv, dat->block); |
| 295 | } |
| 296 | |
| 297 | return 1; |
| 298 | } |
| 299 | |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 300 | static int aes_ecb_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in, |
| 301 | size_t len) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 302 | size_t bl = ctx->cipher->block_size; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 303 | EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data; |
| 304 | |
| 305 | if (len < bl) { |
| 306 | return 1; |
| 307 | } |
| 308 | |
David Benjamin | 7c0d06c | 2016-08-11 13:26:41 -0400 | [diff] [blame] | 309 | len -= bl; |
| 310 | for (size_t i = 0; i <= len; i += bl) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 311 | (*dat->block)(in + i, out + i, &dat->ks); |
| 312 | } |
| 313 | |
| 314 | return 1; |
| 315 | } |
| 316 | |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 317 | static int aes_ctr_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in, |
| 318 | size_t len) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 319 | EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data; |
| 320 | |
| 321 | if (dat->stream.ctr) { |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame] | 322 | CRYPTO_ctr128_encrypt_ctr32(in, out, len, &dat->ks, ctx->iv, ctx->buf, |
| 323 | &ctx->num, dat->stream.ctr); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 324 | } else { |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame] | 325 | CRYPTO_ctr128_encrypt(in, out, len, &dat->ks, ctx->iv, ctx->buf, &ctx->num, |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 326 | dat->block); |
| 327 | } |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 328 | return 1; |
| 329 | } |
| 330 | |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 331 | static int aes_ofb_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in, |
| 332 | size_t len) { |
| 333 | EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data; |
| 334 | |
| 335 | CRYPTO_ofb128_encrypt(in, out, len, &dat->ks, ctx->iv, &ctx->num, dat->block); |
| 336 | return 1; |
| 337 | } |
| 338 | |
| 339 | static char aesni_capable(void); |
| 340 | |
Robert Sloan | 572a4e2 | 2017-04-17 10:52:19 -0700 | [diff] [blame] | 341 | ctr128_f aes_ctr_set_key(AES_KEY *aes_key, GCM128_CONTEXT *gcm_ctx, |
| 342 | block128_f *out_block, const uint8_t *key, |
| 343 | size_t key_bytes) { |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 344 | if (aesni_capable()) { |
Robert Sloan | 572a4e2 | 2017-04-17 10:52:19 -0700 | [diff] [blame] | 345 | aesni_set_encrypt_key(key, key_bytes * 8, aes_key); |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 346 | if (gcm_ctx != NULL) { |
Robert Sloan | 9254e68 | 2017-04-24 09:42:06 -0700 | [diff] [blame] | 347 | CRYPTO_gcm128_init(gcm_ctx, aes_key, (block128_f)aesni_encrypt, 1); |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 348 | } |
| 349 | if (out_block) { |
| 350 | *out_block = (block128_f) aesni_encrypt; |
| 351 | } |
| 352 | return (ctr128_f)aesni_ctr32_encrypt_blocks; |
| 353 | } |
| 354 | |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 355 | if (hwaes_capable()) { |
Robert Sloan | 572a4e2 | 2017-04-17 10:52:19 -0700 | [diff] [blame] | 356 | aes_hw_set_encrypt_key(key, key_bytes * 8, aes_key); |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 357 | if (gcm_ctx != NULL) { |
Robert Sloan | 9254e68 | 2017-04-24 09:42:06 -0700 | [diff] [blame] | 358 | CRYPTO_gcm128_init(gcm_ctx, aes_key, (block128_f)aes_hw_encrypt, 0); |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 359 | } |
| 360 | if (out_block) { |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 361 | *out_block = (block128_f) aes_hw_encrypt; |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 362 | } |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 363 | return (ctr128_f)aes_hw_ctr32_encrypt_blocks; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 364 | } |
| 365 | |
| 366 | if (bsaes_capable()) { |
Robert Sloan | 572a4e2 | 2017-04-17 10:52:19 -0700 | [diff] [blame] | 367 | AES_set_encrypt_key(key, key_bytes * 8, aes_key); |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 368 | if (gcm_ctx != NULL) { |
Robert Sloan | 9254e68 | 2017-04-24 09:42:06 -0700 | [diff] [blame] | 369 | CRYPTO_gcm128_init(gcm_ctx, aes_key, (block128_f)AES_encrypt, 0); |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 370 | } |
| 371 | if (out_block) { |
| 372 | *out_block = (block128_f) AES_encrypt; |
| 373 | } |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 374 | return (ctr128_f)bsaes_ctr32_encrypt_blocks; |
| 375 | } |
| 376 | |
| 377 | if (vpaes_capable()) { |
Robert Sloan | 572a4e2 | 2017-04-17 10:52:19 -0700 | [diff] [blame] | 378 | vpaes_set_encrypt_key(key, key_bytes * 8, aes_key); |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 379 | if (out_block) { |
| 380 | *out_block = (block128_f) vpaes_encrypt; |
| 381 | } |
| 382 | if (gcm_ctx != NULL) { |
Robert Sloan | 9254e68 | 2017-04-24 09:42:06 -0700 | [diff] [blame] | 383 | CRYPTO_gcm128_init(gcm_ctx, aes_key, (block128_f)vpaes_encrypt, 0); |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 384 | } |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 385 | return NULL; |
| 386 | } |
| 387 | |
Robert Sloan | 572a4e2 | 2017-04-17 10:52:19 -0700 | [diff] [blame] | 388 | AES_set_encrypt_key(key, key_bytes * 8, aes_key); |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 389 | if (gcm_ctx != NULL) { |
Robert Sloan | 9254e68 | 2017-04-24 09:42:06 -0700 | [diff] [blame] | 390 | CRYPTO_gcm128_init(gcm_ctx, aes_key, (block128_f)AES_encrypt, 0); |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 391 | } |
| 392 | if (out_block) { |
| 393 | *out_block = (block128_f) AES_encrypt; |
| 394 | } |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 395 | return NULL; |
| 396 | } |
| 397 | |
| 398 | static int aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key, |
| 399 | const uint8_t *iv, int enc) { |
| 400 | EVP_AES_GCM_CTX *gctx = ctx->cipher_data; |
| 401 | if (!iv && !key) { |
| 402 | return 1; |
| 403 | } |
| 404 | if (key) { |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 405 | gctx->ctr = |
| 406 | aes_ctr_set_key(&gctx->ks.ks, &gctx->gcm, NULL, key, ctx->key_len); |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame^] | 407 | // If we have an iv can set it directly, otherwise use saved IV. |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 408 | if (iv == NULL && gctx->iv_set) { |
| 409 | iv = gctx->iv; |
| 410 | } |
| 411 | if (iv) { |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 412 | CRYPTO_gcm128_setiv(&gctx->gcm, &gctx->ks.ks, iv, gctx->ivlen); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 413 | gctx->iv_set = 1; |
| 414 | } |
| 415 | gctx->key_set = 1; |
| 416 | } else { |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame^] | 417 | // If key set use IV, otherwise copy |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 418 | if (gctx->key_set) { |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 419 | CRYPTO_gcm128_setiv(&gctx->gcm, &gctx->ks.ks, iv, gctx->ivlen); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 420 | } else { |
Robert Sloan | 69939df | 2017-01-09 10:53:07 -0800 | [diff] [blame] | 421 | OPENSSL_memcpy(gctx->iv, iv, gctx->ivlen); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 422 | } |
| 423 | gctx->iv_set = 1; |
| 424 | gctx->iv_gen = 0; |
| 425 | } |
| 426 | return 1; |
| 427 | } |
| 428 | |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 429 | static void aes_gcm_cleanup(EVP_CIPHER_CTX *c) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 430 | EVP_AES_GCM_CTX *gctx = c->cipher_data; |
| 431 | OPENSSL_cleanse(&gctx->gcm, sizeof(gctx->gcm)); |
| 432 | if (gctx->iv != c->iv) { |
| 433 | OPENSSL_free(gctx->iv); |
| 434 | } |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 435 | } |
| 436 | |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame^] | 437 | // increment counter (64-bit int) by 1 |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 438 | static void ctr64_inc(uint8_t *counter) { |
| 439 | int n = 8; |
| 440 | uint8_t c; |
| 441 | |
| 442 | do { |
| 443 | --n; |
| 444 | c = counter[n]; |
| 445 | ++c; |
| 446 | counter[n] = c; |
| 447 | if (c) { |
| 448 | return; |
| 449 | } |
| 450 | } while (n); |
| 451 | } |
| 452 | |
| 453 | static int aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) { |
| 454 | EVP_AES_GCM_CTX *gctx = c->cipher_data; |
| 455 | switch (type) { |
| 456 | case EVP_CTRL_INIT: |
| 457 | gctx->key_set = 0; |
| 458 | gctx->iv_set = 0; |
| 459 | gctx->ivlen = c->cipher->iv_len; |
| 460 | gctx->iv = c->iv; |
| 461 | gctx->taglen = -1; |
| 462 | gctx->iv_gen = 0; |
| 463 | return 1; |
| 464 | |
| 465 | case EVP_CTRL_GCM_SET_IVLEN: |
| 466 | if (arg <= 0) { |
| 467 | return 0; |
| 468 | } |
| 469 | |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame^] | 470 | // Allocate memory for IV if needed |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 471 | if (arg > EVP_MAX_IV_LENGTH && arg > gctx->ivlen) { |
| 472 | if (gctx->iv != c->iv) { |
| 473 | OPENSSL_free(gctx->iv); |
| 474 | } |
| 475 | gctx->iv = OPENSSL_malloc(arg); |
| 476 | if (!gctx->iv) { |
| 477 | return 0; |
| 478 | } |
| 479 | } |
| 480 | gctx->ivlen = arg; |
| 481 | return 1; |
| 482 | |
| 483 | case EVP_CTRL_GCM_SET_TAG: |
| 484 | if (arg <= 0 || arg > 16 || c->encrypt) { |
| 485 | return 0; |
| 486 | } |
Robert Sloan | 69939df | 2017-01-09 10:53:07 -0800 | [diff] [blame] | 487 | OPENSSL_memcpy(c->buf, ptr, arg); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 488 | gctx->taglen = arg; |
| 489 | return 1; |
| 490 | |
| 491 | case EVP_CTRL_GCM_GET_TAG: |
| 492 | if (arg <= 0 || arg > 16 || !c->encrypt || gctx->taglen < 0) { |
| 493 | return 0; |
| 494 | } |
Robert Sloan | 69939df | 2017-01-09 10:53:07 -0800 | [diff] [blame] | 495 | OPENSSL_memcpy(ptr, c->buf, arg); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 496 | return 1; |
| 497 | |
| 498 | case EVP_CTRL_GCM_SET_IV_FIXED: |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame^] | 499 | // Special case: -1 length restores whole IV |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 500 | if (arg == -1) { |
Robert Sloan | 69939df | 2017-01-09 10:53:07 -0800 | [diff] [blame] | 501 | OPENSSL_memcpy(gctx->iv, ptr, gctx->ivlen); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 502 | gctx->iv_gen = 1; |
| 503 | return 1; |
| 504 | } |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame^] | 505 | // Fixed field must be at least 4 bytes and invocation field |
| 506 | // at least 8. |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 507 | if (arg < 4 || (gctx->ivlen - arg) < 8) { |
| 508 | return 0; |
| 509 | } |
| 510 | if (arg) { |
Robert Sloan | 69939df | 2017-01-09 10:53:07 -0800 | [diff] [blame] | 511 | OPENSSL_memcpy(gctx->iv, ptr, arg); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 512 | } |
| 513 | if (c->encrypt && !RAND_bytes(gctx->iv + arg, gctx->ivlen - arg)) { |
| 514 | return 0; |
| 515 | } |
| 516 | gctx->iv_gen = 1; |
| 517 | return 1; |
| 518 | |
| 519 | case EVP_CTRL_GCM_IV_GEN: |
| 520 | if (gctx->iv_gen == 0 || gctx->key_set == 0) { |
| 521 | return 0; |
| 522 | } |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 523 | CRYPTO_gcm128_setiv(&gctx->gcm, &gctx->ks.ks, gctx->iv, gctx->ivlen); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 524 | if (arg <= 0 || arg > gctx->ivlen) { |
| 525 | arg = gctx->ivlen; |
| 526 | } |
Robert Sloan | 69939df | 2017-01-09 10:53:07 -0800 | [diff] [blame] | 527 | OPENSSL_memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg); |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame^] | 528 | // Invocation field will be at least 8 bytes in size and |
| 529 | // so no need to check wrap around or increment more than |
| 530 | // last 8 bytes. |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 531 | ctr64_inc(gctx->iv + gctx->ivlen - 8); |
| 532 | gctx->iv_set = 1; |
| 533 | return 1; |
| 534 | |
| 535 | case EVP_CTRL_GCM_SET_IV_INV: |
| 536 | if (gctx->iv_gen == 0 || gctx->key_set == 0 || c->encrypt) { |
| 537 | return 0; |
| 538 | } |
Robert Sloan | 69939df | 2017-01-09 10:53:07 -0800 | [diff] [blame] | 539 | OPENSSL_memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg); |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 540 | CRYPTO_gcm128_setiv(&gctx->gcm, &gctx->ks.ks, gctx->iv, gctx->ivlen); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 541 | gctx->iv_set = 1; |
| 542 | return 1; |
| 543 | |
| 544 | case EVP_CTRL_COPY: { |
| 545 | EVP_CIPHER_CTX *out = ptr; |
| 546 | EVP_AES_GCM_CTX *gctx_out = out->cipher_data; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 547 | if (gctx->iv == c->iv) { |
| 548 | gctx_out->iv = out->iv; |
| 549 | } else { |
| 550 | gctx_out->iv = OPENSSL_malloc(gctx->ivlen); |
| 551 | if (!gctx_out->iv) { |
| 552 | return 0; |
| 553 | } |
Robert Sloan | 69939df | 2017-01-09 10:53:07 -0800 | [diff] [blame] | 554 | OPENSSL_memcpy(gctx_out->iv, gctx->iv, gctx->ivlen); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 555 | } |
| 556 | return 1; |
| 557 | } |
| 558 | |
| 559 | default: |
| 560 | return -1; |
| 561 | } |
| 562 | } |
| 563 | |
| 564 | static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in, |
| 565 | size_t len) { |
| 566 | EVP_AES_GCM_CTX *gctx = ctx->cipher_data; |
| 567 | |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame^] | 568 | // If not set up, return error |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 569 | if (!gctx->key_set) { |
| 570 | return -1; |
| 571 | } |
| 572 | if (!gctx->iv_set) { |
| 573 | return -1; |
| 574 | } |
| 575 | |
| 576 | if (in) { |
| 577 | if (out == NULL) { |
| 578 | if (!CRYPTO_gcm128_aad(&gctx->gcm, in, len)) { |
| 579 | return -1; |
| 580 | } |
| 581 | } else if (ctx->encrypt) { |
| 582 | if (gctx->ctr) { |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame] | 583 | if (!CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm, &gctx->ks.ks, in, out, len, |
| 584 | gctx->ctr)) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 585 | return -1; |
| 586 | } |
| 587 | } else { |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame] | 588 | if (!CRYPTO_gcm128_encrypt(&gctx->gcm, &gctx->ks.ks, in, out, len)) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 589 | return -1; |
| 590 | } |
| 591 | } |
| 592 | } else { |
| 593 | if (gctx->ctr) { |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame] | 594 | if (!CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm, &gctx->ks.ks, in, out, len, |
| 595 | gctx->ctr)) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 596 | return -1; |
| 597 | } |
| 598 | } else { |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame] | 599 | if (!CRYPTO_gcm128_decrypt(&gctx->gcm, &gctx->ks.ks, in, out, len)) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 600 | return -1; |
| 601 | } |
| 602 | } |
| 603 | } |
| 604 | return len; |
| 605 | } else { |
| 606 | if (!ctx->encrypt) { |
| 607 | if (gctx->taglen < 0 || |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 608 | !CRYPTO_gcm128_finish(&gctx->gcm, ctx->buf, gctx->taglen)) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 609 | return -1; |
| 610 | } |
| 611 | gctx->iv_set = 0; |
| 612 | return 0; |
| 613 | } |
| 614 | CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, 16); |
| 615 | gctx->taglen = 16; |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame^] | 616 | // Don't reuse the IV |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 617 | gctx->iv_set = 0; |
| 618 | return 0; |
| 619 | } |
| 620 | } |
| 621 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 622 | DEFINE_LOCAL_DATA(EVP_CIPHER, aes_128_cbc_generic) { |
| 623 | memset(out, 0, sizeof(EVP_CIPHER)); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 624 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 625 | out->nid = NID_aes_128_cbc; |
| 626 | out->block_size = 16; |
| 627 | out->key_len = 16; |
| 628 | out->iv_len = 16; |
| 629 | out->ctx_size = sizeof(EVP_AES_KEY); |
| 630 | out->flags = EVP_CIPH_CBC_MODE; |
| 631 | out->init = aes_init_key; |
| 632 | out->cipher = aes_cbc_cipher; |
| 633 | } |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 634 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 635 | DEFINE_LOCAL_DATA(EVP_CIPHER, aes_128_ctr_generic) { |
| 636 | memset(out, 0, sizeof(EVP_CIPHER)); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 637 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 638 | out->nid = NID_aes_128_ctr; |
| 639 | out->block_size = 1; |
| 640 | out->key_len = 16; |
| 641 | out->iv_len = 16; |
| 642 | out->ctx_size = sizeof(EVP_AES_KEY); |
| 643 | out->flags = EVP_CIPH_CTR_MODE; |
| 644 | out->init = aes_init_key; |
| 645 | out->cipher = aes_ctr_cipher; |
| 646 | } |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 647 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 648 | DEFINE_LOCAL_DATA(EVP_CIPHER, aes_128_ecb_generic) { |
| 649 | memset(out, 0, sizeof(EVP_CIPHER)); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 650 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 651 | out->nid = NID_aes_128_ecb; |
| 652 | out->block_size = 16; |
| 653 | out->key_len = 16; |
| 654 | out->ctx_size = sizeof(EVP_AES_KEY); |
| 655 | out->flags = EVP_CIPH_ECB_MODE; |
| 656 | out->init = aes_init_key; |
| 657 | out->cipher = aes_ecb_cipher; |
| 658 | } |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 659 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 660 | DEFINE_LOCAL_DATA(EVP_CIPHER, aes_128_ofb_generic) { |
| 661 | memset(out, 0, sizeof(EVP_CIPHER)); |
Adam Langley | 13d393e | 2015-04-08 11:18:53 -0700 | [diff] [blame] | 662 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 663 | out->nid = NID_aes_128_ofb128; |
| 664 | out->block_size = 1; |
| 665 | out->key_len = 16; |
| 666 | out->iv_len = 16; |
| 667 | out->ctx_size = sizeof(EVP_AES_KEY); |
| 668 | out->flags = EVP_CIPH_OFB_MODE; |
| 669 | out->init = aes_init_key; |
| 670 | out->cipher = aes_ofb_cipher; |
| 671 | } |
Adam Langley | 13d393e | 2015-04-08 11:18:53 -0700 | [diff] [blame] | 672 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 673 | DEFINE_LOCAL_DATA(EVP_CIPHER, aes_128_gcm_generic) { |
| 674 | memset(out, 0, sizeof(EVP_CIPHER)); |
Adam Langley | 13d393e | 2015-04-08 11:18:53 -0700 | [diff] [blame] | 675 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 676 | out->nid = NID_aes_128_gcm; |
| 677 | out->block_size = 1; |
| 678 | out->key_len = 16; |
| 679 | out->iv_len = 12; |
| 680 | out->ctx_size = sizeof(EVP_AES_GCM_CTX); |
| 681 | out->flags = EVP_CIPH_GCM_MODE | EVP_CIPH_CUSTOM_IV | |
| 682 | EVP_CIPH_FLAG_CUSTOM_CIPHER | EVP_CIPH_ALWAYS_CALL_INIT | |
| 683 | EVP_CIPH_CTRL_INIT | EVP_CIPH_FLAG_AEAD_CIPHER; |
| 684 | out->init = aes_gcm_init_key; |
| 685 | out->cipher = aes_gcm_cipher; |
| 686 | out->cleanup = aes_gcm_cleanup; |
| 687 | out->ctrl = aes_gcm_ctrl; |
| 688 | } |
Adam Langley | 13d393e | 2015-04-08 11:18:53 -0700 | [diff] [blame] | 689 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 690 | DEFINE_LOCAL_DATA(EVP_CIPHER, aes_192_cbc_generic) { |
| 691 | memset(out, 0, sizeof(EVP_CIPHER)); |
Adam Langley | 13d393e | 2015-04-08 11:18:53 -0700 | [diff] [blame] | 692 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 693 | out->nid = NID_aes_192_cbc; |
| 694 | out->block_size = 16; |
| 695 | out->key_len = 24; |
| 696 | out->iv_len = 16; |
| 697 | out->ctx_size = sizeof(EVP_AES_KEY); |
| 698 | out->flags = EVP_CIPH_CBC_MODE; |
| 699 | out->init = aes_init_key; |
| 700 | out->cipher = aes_cbc_cipher; |
| 701 | } |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 702 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 703 | DEFINE_LOCAL_DATA(EVP_CIPHER, aes_192_ctr_generic) { |
| 704 | memset(out, 0, sizeof(EVP_CIPHER)); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 705 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 706 | out->nid = NID_aes_192_ctr; |
| 707 | out->block_size = 1; |
| 708 | out->key_len = 24; |
| 709 | out->iv_len = 16; |
| 710 | out->ctx_size = sizeof(EVP_AES_KEY); |
| 711 | out->flags = EVP_CIPH_CTR_MODE; |
| 712 | out->init = aes_init_key; |
| 713 | out->cipher = aes_ctr_cipher; |
| 714 | } |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 715 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 716 | DEFINE_LOCAL_DATA(EVP_CIPHER, aes_192_ecb_generic) { |
| 717 | memset(out, 0, sizeof(EVP_CIPHER)); |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 718 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 719 | out->nid = NID_aes_192_ecb; |
| 720 | out->block_size = 16; |
| 721 | out->key_len = 24; |
| 722 | out->ctx_size = sizeof(EVP_AES_KEY); |
| 723 | out->flags = EVP_CIPH_ECB_MODE; |
| 724 | out->init = aes_init_key; |
| 725 | out->cipher = aes_ecb_cipher; |
| 726 | } |
| 727 | |
| 728 | DEFINE_LOCAL_DATA(EVP_CIPHER, aes_192_gcm_generic) { |
| 729 | memset(out, 0, sizeof(EVP_CIPHER)); |
| 730 | |
| 731 | out->nid = NID_aes_192_gcm; |
| 732 | out->block_size = 1; |
| 733 | out->key_len = 24; |
| 734 | out->iv_len = 12; |
| 735 | out->ctx_size = sizeof(EVP_AES_GCM_CTX); |
| 736 | out->flags = EVP_CIPH_GCM_MODE | EVP_CIPH_CUSTOM_IV | |
| 737 | EVP_CIPH_FLAG_CUSTOM_CIPHER | EVP_CIPH_ALWAYS_CALL_INIT | |
| 738 | EVP_CIPH_CTRL_INIT | EVP_CIPH_FLAG_AEAD_CIPHER; |
| 739 | out->init = aes_gcm_init_key; |
| 740 | out->cipher = aes_gcm_cipher; |
| 741 | out->cleanup = aes_gcm_cleanup; |
| 742 | out->ctrl = aes_gcm_ctrl; |
| 743 | } |
| 744 | |
| 745 | DEFINE_LOCAL_DATA(EVP_CIPHER, aes_256_cbc_generic) { |
| 746 | memset(out, 0, sizeof(EVP_CIPHER)); |
| 747 | |
| 748 | out->nid = NID_aes_256_cbc; |
| 749 | out->block_size = 16; |
| 750 | out->key_len = 32; |
| 751 | out->iv_len = 16; |
| 752 | out->ctx_size = sizeof(EVP_AES_KEY); |
| 753 | out->flags = EVP_CIPH_CBC_MODE; |
| 754 | out->init = aes_init_key; |
| 755 | out->cipher = aes_cbc_cipher; |
| 756 | } |
| 757 | |
| 758 | DEFINE_LOCAL_DATA(EVP_CIPHER, aes_256_ctr_generic) { |
| 759 | memset(out, 0, sizeof(EVP_CIPHER)); |
| 760 | |
| 761 | out->nid = NID_aes_256_ctr; |
| 762 | out->block_size = 1; |
| 763 | out->key_len = 32; |
| 764 | out->iv_len = 16; |
| 765 | out->ctx_size = sizeof(EVP_AES_KEY); |
| 766 | out->flags = EVP_CIPH_CTR_MODE; |
| 767 | out->init = aes_init_key; |
| 768 | out->cipher = aes_ctr_cipher; |
| 769 | } |
| 770 | |
| 771 | DEFINE_LOCAL_DATA(EVP_CIPHER, aes_256_ecb_generic) { |
| 772 | memset(out, 0, sizeof(EVP_CIPHER)); |
| 773 | |
| 774 | out->nid = NID_aes_256_ecb; |
| 775 | out->block_size = 16; |
| 776 | out->key_len = 32; |
| 777 | out->ctx_size = sizeof(EVP_AES_KEY); |
| 778 | out->flags = EVP_CIPH_ECB_MODE; |
| 779 | out->init = aes_init_key; |
| 780 | out->cipher = aes_ecb_cipher; |
| 781 | } |
| 782 | |
| 783 | DEFINE_LOCAL_DATA(EVP_CIPHER, aes_256_ofb_generic) { |
| 784 | memset(out, 0, sizeof(EVP_CIPHER)); |
| 785 | |
| 786 | out->nid = NID_aes_256_ofb128; |
| 787 | out->block_size = 1; |
| 788 | out->key_len = 32; |
| 789 | out->iv_len = 16; |
| 790 | out->ctx_size = sizeof(EVP_AES_KEY); |
| 791 | out->flags = EVP_CIPH_OFB_MODE; |
| 792 | out->init = aes_init_key; |
| 793 | out->cipher = aes_ofb_cipher; |
| 794 | } |
| 795 | |
| 796 | DEFINE_LOCAL_DATA(EVP_CIPHER, aes_256_gcm_generic) { |
| 797 | memset(out, 0, sizeof(EVP_CIPHER)); |
| 798 | |
| 799 | out->nid = NID_aes_256_gcm; |
| 800 | out->block_size = 1; |
| 801 | out->key_len = 32; |
| 802 | out->iv_len = 12; |
| 803 | out->ctx_size = sizeof(EVP_AES_GCM_CTX); |
| 804 | out->flags = EVP_CIPH_GCM_MODE | EVP_CIPH_CUSTOM_IV | |
| 805 | EVP_CIPH_FLAG_CUSTOM_CIPHER | EVP_CIPH_ALWAYS_CALL_INIT | |
| 806 | EVP_CIPH_CTRL_INIT | EVP_CIPH_FLAG_AEAD_CIPHER; |
| 807 | out->init = aes_gcm_init_key; |
| 808 | out->cipher = aes_gcm_cipher; |
| 809 | out->cleanup = aes_gcm_cleanup; |
| 810 | out->ctrl = aes_gcm_ctrl; |
| 811 | } |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 812 | |
| 813 | #if !defined(OPENSSL_NO_ASM) && \ |
| 814 | (defined(OPENSSL_X86_64) || defined(OPENSSL_X86)) |
| 815 | |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame^] | 816 | // AES-NI section. |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 817 | |
| 818 | static char aesni_capable(void) { |
| 819 | return (OPENSSL_ia32cap_P[1] & (1 << (57 - 32))) != 0; |
| 820 | } |
| 821 | |
| 822 | static int aesni_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key, |
| 823 | const uint8_t *iv, int enc) { |
| 824 | int ret, mode; |
| 825 | EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data; |
| 826 | |
| 827 | mode = ctx->cipher->flags & EVP_CIPH_MODE_MASK; |
| 828 | if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE) && !enc) { |
| 829 | ret = aesni_set_decrypt_key(key, ctx->key_len * 8, ctx->cipher_data); |
| 830 | dat->block = (block128_f)aesni_decrypt; |
| 831 | dat->stream.cbc = |
| 832 | mode == EVP_CIPH_CBC_MODE ? (cbc128_f)aesni_cbc_encrypt : NULL; |
| 833 | } else { |
| 834 | ret = aesni_set_encrypt_key(key, ctx->key_len * 8, ctx->cipher_data); |
| 835 | dat->block = (block128_f)aesni_encrypt; |
| 836 | if (mode == EVP_CIPH_CBC_MODE) { |
| 837 | dat->stream.cbc = (cbc128_f)aesni_cbc_encrypt; |
| 838 | } else if (mode == EVP_CIPH_CTR_MODE) { |
| 839 | dat->stream.ctr = (ctr128_f)aesni_ctr32_encrypt_blocks; |
| 840 | } else { |
| 841 | dat->stream.cbc = NULL; |
| 842 | } |
| 843 | } |
| 844 | |
| 845 | if (ret < 0) { |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 846 | OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_AES_KEY_SETUP_FAILED); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 847 | return 0; |
| 848 | } |
| 849 | |
| 850 | return 1; |
| 851 | } |
| 852 | |
| 853 | static int aesni_cbc_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, |
| 854 | const uint8_t *in, size_t len) { |
| 855 | aesni_cbc_encrypt(in, out, len, ctx->cipher_data, ctx->iv, ctx->encrypt); |
| 856 | |
| 857 | return 1; |
| 858 | } |
| 859 | |
| 860 | static int aesni_ecb_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, |
| 861 | const uint8_t *in, size_t len) { |
| 862 | size_t bl = ctx->cipher->block_size; |
| 863 | |
| 864 | if (len < bl) { |
| 865 | return 1; |
| 866 | } |
| 867 | |
| 868 | aesni_ecb_encrypt(in, out, len, ctx->cipher_data, ctx->encrypt); |
| 869 | |
| 870 | return 1; |
| 871 | } |
| 872 | |
| 873 | static int aesni_gcm_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key, |
| 874 | const uint8_t *iv, int enc) { |
| 875 | EVP_AES_GCM_CTX *gctx = ctx->cipher_data; |
| 876 | if (!iv && !key) { |
| 877 | return 1; |
| 878 | } |
| 879 | if (key) { |
| 880 | aesni_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks); |
Robert Sloan | 9254e68 | 2017-04-24 09:42:06 -0700 | [diff] [blame] | 881 | CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f)aesni_encrypt, 1); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 882 | gctx->ctr = (ctr128_f)aesni_ctr32_encrypt_blocks; |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame^] | 883 | // If we have an iv can set it directly, otherwise use |
| 884 | // saved IV. |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 885 | if (iv == NULL && gctx->iv_set) { |
| 886 | iv = gctx->iv; |
| 887 | } |
| 888 | if (iv) { |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 889 | CRYPTO_gcm128_setiv(&gctx->gcm, &gctx->ks.ks, iv, gctx->ivlen); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 890 | gctx->iv_set = 1; |
| 891 | } |
| 892 | gctx->key_set = 1; |
| 893 | } else { |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame^] | 894 | // If key set use IV, otherwise copy |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 895 | if (gctx->key_set) { |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 896 | CRYPTO_gcm128_setiv(&gctx->gcm, &gctx->ks.ks, iv, gctx->ivlen); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 897 | } else { |
Robert Sloan | 69939df | 2017-01-09 10:53:07 -0800 | [diff] [blame] | 898 | OPENSSL_memcpy(gctx->iv, iv, gctx->ivlen); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 899 | } |
| 900 | gctx->iv_set = 1; |
| 901 | gctx->iv_gen = 0; |
| 902 | } |
| 903 | return 1; |
| 904 | } |
| 905 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 906 | DEFINE_LOCAL_DATA(EVP_CIPHER, aesni_128_cbc) { |
| 907 | memset(out, 0, sizeof(EVP_CIPHER)); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 908 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 909 | out->nid = NID_aes_128_cbc; |
| 910 | out->block_size = 16; |
| 911 | out->key_len = 16; |
| 912 | out->iv_len = 16; |
| 913 | out->ctx_size = sizeof(EVP_AES_KEY); |
| 914 | out->flags = EVP_CIPH_CBC_MODE; |
| 915 | out->init = aesni_init_key; |
| 916 | out->cipher = aesni_cbc_cipher; |
| 917 | } |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 918 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 919 | DEFINE_LOCAL_DATA(EVP_CIPHER, aesni_128_ctr) { |
| 920 | memset(out, 0, sizeof(EVP_CIPHER)); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 921 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 922 | out->nid = NID_aes_128_ctr; |
| 923 | out->block_size = 1; |
| 924 | out->key_len = 16; |
| 925 | out->iv_len = 16; |
| 926 | out->ctx_size = sizeof(EVP_AES_KEY); |
| 927 | out->flags = EVP_CIPH_CTR_MODE; |
| 928 | out->init = aesni_init_key; |
| 929 | out->cipher = aes_ctr_cipher; |
| 930 | } |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 931 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 932 | DEFINE_LOCAL_DATA(EVP_CIPHER, aesni_128_ecb) { |
| 933 | memset(out, 0, sizeof(EVP_CIPHER)); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 934 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 935 | out->nid = NID_aes_128_ecb; |
| 936 | out->block_size = 16; |
| 937 | out->key_len = 16; |
| 938 | out->ctx_size = sizeof(EVP_AES_KEY); |
| 939 | out->flags = EVP_CIPH_ECB_MODE; |
| 940 | out->init = aesni_init_key; |
| 941 | out->cipher = aesni_ecb_cipher; |
| 942 | } |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 943 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 944 | DEFINE_LOCAL_DATA(EVP_CIPHER, aesni_128_ofb) { |
| 945 | memset(out, 0, sizeof(EVP_CIPHER)); |
Adam Langley | 13d393e | 2015-04-08 11:18:53 -0700 | [diff] [blame] | 946 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 947 | out->nid = NID_aes_128_ofb128; |
| 948 | out->block_size = 1; |
| 949 | out->key_len = 16; |
| 950 | out->iv_len = 16; |
| 951 | out->ctx_size = sizeof(EVP_AES_KEY); |
| 952 | out->flags = EVP_CIPH_OFB_MODE; |
| 953 | out->init = aesni_init_key; |
| 954 | out->cipher = aes_ofb_cipher; |
| 955 | } |
Adam Langley | 13d393e | 2015-04-08 11:18:53 -0700 | [diff] [blame] | 956 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 957 | DEFINE_LOCAL_DATA(EVP_CIPHER, aesni_128_gcm) { |
| 958 | memset(out, 0, sizeof(EVP_CIPHER)); |
Adam Langley | 13d393e | 2015-04-08 11:18:53 -0700 | [diff] [blame] | 959 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 960 | out->nid = NID_aes_128_gcm; |
| 961 | out->block_size = 1; |
| 962 | out->key_len = 16; |
| 963 | out->iv_len = 12; |
| 964 | out->ctx_size = sizeof(EVP_AES_GCM_CTX); |
| 965 | out->flags = EVP_CIPH_GCM_MODE | EVP_CIPH_CUSTOM_IV | |
| 966 | EVP_CIPH_FLAG_CUSTOM_CIPHER | EVP_CIPH_ALWAYS_CALL_INIT | |
| 967 | EVP_CIPH_CTRL_INIT | EVP_CIPH_FLAG_AEAD_CIPHER; |
| 968 | out->init = aesni_gcm_init_key; |
| 969 | out->cipher = aes_gcm_cipher; |
| 970 | out->cleanup = aes_gcm_cleanup; |
| 971 | out->ctrl = aes_gcm_ctrl; |
| 972 | } |
Adam Langley | 13d393e | 2015-04-08 11:18:53 -0700 | [diff] [blame] | 973 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 974 | DEFINE_LOCAL_DATA(EVP_CIPHER, aesni_192_cbc) { |
| 975 | memset(out, 0, sizeof(EVP_CIPHER)); |
Adam Langley | 13d393e | 2015-04-08 11:18:53 -0700 | [diff] [blame] | 976 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 977 | out->nid = NID_aes_192_cbc; |
| 978 | out->block_size = 16; |
| 979 | out->key_len = 24; |
| 980 | out->iv_len = 16; |
| 981 | out->ctx_size = sizeof(EVP_AES_KEY); |
| 982 | out->flags = EVP_CIPH_CBC_MODE; |
| 983 | out->init = aesni_init_key; |
| 984 | out->cipher = aesni_cbc_cipher; |
| 985 | } |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 986 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 987 | DEFINE_LOCAL_DATA(EVP_CIPHER, aesni_192_ctr) { |
| 988 | memset(out, 0, sizeof(EVP_CIPHER)); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 989 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 990 | out->nid = NID_aes_192_ctr; |
| 991 | out->block_size = 1; |
| 992 | out->key_len = 24; |
| 993 | out->iv_len = 16; |
| 994 | out->ctx_size = sizeof(EVP_AES_KEY); |
| 995 | out->flags = EVP_CIPH_CTR_MODE; |
| 996 | out->init = aesni_init_key; |
| 997 | out->cipher = aes_ctr_cipher; |
| 998 | } |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 999 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1000 | DEFINE_LOCAL_DATA(EVP_CIPHER, aesni_192_ecb) { |
| 1001 | memset(out, 0, sizeof(EVP_CIPHER)); |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 1002 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1003 | out->nid = NID_aes_192_ecb; |
| 1004 | out->block_size = 16; |
| 1005 | out->key_len = 24; |
| 1006 | out->ctx_size = sizeof(EVP_AES_KEY); |
| 1007 | out->flags = EVP_CIPH_ECB_MODE; |
| 1008 | out->init = aesni_init_key; |
| 1009 | out->cipher = aesni_ecb_cipher; |
| 1010 | } |
| 1011 | |
| 1012 | DEFINE_LOCAL_DATA(EVP_CIPHER, aesni_192_gcm) { |
| 1013 | memset(out, 0, sizeof(EVP_CIPHER)); |
| 1014 | |
| 1015 | out->nid = NID_aes_192_gcm; |
| 1016 | out->block_size = 1; |
| 1017 | out->key_len = 24; |
| 1018 | out->iv_len = 12; |
| 1019 | out->ctx_size = sizeof(EVP_AES_GCM_CTX); |
| 1020 | out->flags = EVP_CIPH_GCM_MODE | EVP_CIPH_CUSTOM_IV | |
| 1021 | EVP_CIPH_FLAG_CUSTOM_CIPHER | EVP_CIPH_ALWAYS_CALL_INIT | |
| 1022 | EVP_CIPH_CTRL_INIT | EVP_CIPH_FLAG_AEAD_CIPHER; |
| 1023 | out->init = aesni_gcm_init_key; |
| 1024 | out->cipher = aes_gcm_cipher; |
| 1025 | out->cleanup = aes_gcm_cleanup; |
| 1026 | out->ctrl = aes_gcm_ctrl; |
| 1027 | } |
| 1028 | |
| 1029 | DEFINE_LOCAL_DATA(EVP_CIPHER, aesni_256_cbc) { |
| 1030 | memset(out, 0, sizeof(EVP_CIPHER)); |
| 1031 | |
| 1032 | out->nid = NID_aes_256_cbc; |
| 1033 | out->block_size = 16; |
| 1034 | out->key_len = 32; |
| 1035 | out->iv_len = 16; |
| 1036 | out->ctx_size = sizeof(EVP_AES_KEY); |
| 1037 | out->flags = EVP_CIPH_CBC_MODE; |
| 1038 | out->init = aesni_init_key; |
| 1039 | out->cipher = aesni_cbc_cipher; |
| 1040 | } |
| 1041 | |
| 1042 | DEFINE_LOCAL_DATA(EVP_CIPHER, aesni_256_ctr) { |
| 1043 | memset(out, 0, sizeof(EVP_CIPHER)); |
| 1044 | |
| 1045 | out->nid = NID_aes_256_ctr; |
| 1046 | out->block_size = 1; |
| 1047 | out->key_len = 32; |
| 1048 | out->iv_len = 16; |
| 1049 | out->ctx_size = sizeof(EVP_AES_KEY); |
| 1050 | out->flags = EVP_CIPH_CTR_MODE; |
| 1051 | out->init = aesni_init_key; |
| 1052 | out->cipher = aes_ctr_cipher; |
| 1053 | } |
| 1054 | |
| 1055 | DEFINE_LOCAL_DATA(EVP_CIPHER, aesni_256_ecb) { |
| 1056 | memset(out, 0, sizeof(EVP_CIPHER)); |
| 1057 | |
| 1058 | out->nid = NID_aes_256_ecb; |
| 1059 | out->block_size = 16; |
| 1060 | out->key_len = 32; |
| 1061 | out->ctx_size = sizeof(EVP_AES_KEY); |
| 1062 | out->flags = EVP_CIPH_ECB_MODE; |
| 1063 | out->init = aesni_init_key; |
| 1064 | out->cipher = aesni_ecb_cipher; |
| 1065 | } |
| 1066 | |
| 1067 | DEFINE_LOCAL_DATA(EVP_CIPHER, aesni_256_ofb) { |
| 1068 | memset(out, 0, sizeof(EVP_CIPHER)); |
| 1069 | |
| 1070 | out->nid = NID_aes_256_ofb128; |
| 1071 | out->block_size = 1; |
| 1072 | out->key_len = 32; |
| 1073 | out->iv_len = 16; |
| 1074 | out->ctx_size = sizeof(EVP_AES_KEY); |
| 1075 | out->flags = EVP_CIPH_OFB_MODE; |
| 1076 | out->init = aesni_init_key; |
| 1077 | out->cipher = aes_ofb_cipher; |
| 1078 | } |
| 1079 | |
| 1080 | DEFINE_LOCAL_DATA(EVP_CIPHER, aesni_256_gcm) { |
| 1081 | memset(out, 0, sizeof(EVP_CIPHER)); |
| 1082 | |
| 1083 | out->nid = NID_aes_256_gcm; |
| 1084 | out->block_size = 1; |
| 1085 | out->key_len = 32; |
| 1086 | out->iv_len = 12; |
| 1087 | out->ctx_size = sizeof(EVP_AES_GCM_CTX); |
| 1088 | out->flags = EVP_CIPH_GCM_MODE | EVP_CIPH_CUSTOM_IV | |
| 1089 | EVP_CIPH_FLAG_CUSTOM_CIPHER | EVP_CIPH_ALWAYS_CALL_INIT | |
| 1090 | EVP_CIPH_CTRL_INIT | EVP_CIPH_CUSTOM_COPY | |
| 1091 | EVP_CIPH_FLAG_AEAD_CIPHER; |
| 1092 | out->init = aesni_gcm_init_key; |
| 1093 | out->cipher = aes_gcm_cipher; |
| 1094 | out->cleanup = aes_gcm_cleanup; |
| 1095 | out->ctrl = aes_gcm_ctrl; |
| 1096 | } |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1097 | |
| 1098 | #define EVP_CIPHER_FUNCTION(keybits, mode) \ |
| 1099 | const EVP_CIPHER *EVP_aes_##keybits##_##mode(void) { \ |
| 1100 | if (aesni_capable()) { \ |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1101 | return aesni_##keybits##_##mode(); \ |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1102 | } else { \ |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1103 | return aes_##keybits##_##mode##_generic(); \ |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1104 | } \ |
| 1105 | } |
| 1106 | |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame^] | 1107 | #else // ^^^ OPENSSL_X86_64 || OPENSSL_X86 |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1108 | |
| 1109 | static char aesni_capable(void) { |
| 1110 | return 0; |
| 1111 | } |
| 1112 | |
| 1113 | #define EVP_CIPHER_FUNCTION(keybits, mode) \ |
| 1114 | const EVP_CIPHER *EVP_aes_##keybits##_##mode(void) { \ |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1115 | return aes_##keybits##_##mode##_generic(); \ |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1116 | } |
| 1117 | |
| 1118 | #endif |
| 1119 | |
| 1120 | EVP_CIPHER_FUNCTION(128, cbc) |
| 1121 | EVP_CIPHER_FUNCTION(128, ctr) |
| 1122 | EVP_CIPHER_FUNCTION(128, ecb) |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 1123 | EVP_CIPHER_FUNCTION(128, ofb) |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1124 | EVP_CIPHER_FUNCTION(128, gcm) |
| 1125 | |
Adam Langley | 13d393e | 2015-04-08 11:18:53 -0700 | [diff] [blame] | 1126 | EVP_CIPHER_FUNCTION(192, cbc) |
| 1127 | EVP_CIPHER_FUNCTION(192, ctr) |
| 1128 | EVP_CIPHER_FUNCTION(192, ecb) |
| 1129 | EVP_CIPHER_FUNCTION(192, gcm) |
| 1130 | |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1131 | EVP_CIPHER_FUNCTION(256, cbc) |
| 1132 | EVP_CIPHER_FUNCTION(256, ctr) |
| 1133 | EVP_CIPHER_FUNCTION(256, ecb) |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 1134 | EVP_CIPHER_FUNCTION(256, ofb) |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1135 | EVP_CIPHER_FUNCTION(256, gcm) |
| 1136 | |
| 1137 | |
| 1138 | #define EVP_AEAD_AES_GCM_TAG_LEN 16 |
| 1139 | |
| 1140 | struct aead_aes_gcm_ctx { |
| 1141 | union { |
| 1142 | double align; |
| 1143 | AES_KEY ks; |
| 1144 | } ks; |
| 1145 | GCM128_CONTEXT gcm; |
| 1146 | ctr128_f ctr; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1147 | }; |
| 1148 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1149 | struct aead_aes_gcm_tls12_ctx { |
| 1150 | struct aead_aes_gcm_ctx gcm_ctx; |
| 1151 | uint64_t counter; |
| 1152 | }; |
| 1153 | |
| 1154 | static int aead_aes_gcm_init_impl(struct aead_aes_gcm_ctx *gcm_ctx, |
Robert Sloan | 927a495 | 2017-07-03 11:25:09 -0700 | [diff] [blame] | 1155 | size_t *out_tag_len, const uint8_t *key, |
| 1156 | size_t key_len, size_t tag_len) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1157 | const size_t key_bits = key_len * 8; |
| 1158 | |
| 1159 | if (key_bits != 128 && key_bits != 256) { |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 1160 | OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_KEY_LENGTH); |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame^] | 1161 | return 0; // EVP_AEAD_CTX_init should catch this. |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1162 | } |
| 1163 | |
| 1164 | if (tag_len == EVP_AEAD_DEFAULT_TAG_LENGTH) { |
| 1165 | tag_len = EVP_AEAD_AES_GCM_TAG_LEN; |
| 1166 | } |
| 1167 | |
| 1168 | if (tag_len > EVP_AEAD_AES_GCM_TAG_LEN) { |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 1169 | OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TAG_TOO_LARGE); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1170 | return 0; |
| 1171 | } |
| 1172 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1173 | gcm_ctx->ctr = |
| 1174 | aes_ctr_set_key(&gcm_ctx->ks.ks, &gcm_ctx->gcm, NULL, key, key_len); |
Robert Sloan | 927a495 | 2017-07-03 11:25:09 -0700 | [diff] [blame] | 1175 | *out_tag_len = tag_len; |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1176 | return 1; |
| 1177 | } |
| 1178 | |
| 1179 | static int aead_aes_gcm_init(EVP_AEAD_CTX *ctx, const uint8_t *key, |
Robert Sloan | 927a495 | 2017-07-03 11:25:09 -0700 | [diff] [blame] | 1180 | size_t key_len, size_t requested_tag_len) { |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1181 | struct aead_aes_gcm_ctx *gcm_ctx; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1182 | gcm_ctx = OPENSSL_malloc(sizeof(struct aead_aes_gcm_ctx)); |
| 1183 | if (gcm_ctx == NULL) { |
| 1184 | return 0; |
| 1185 | } |
| 1186 | |
Robert Sloan | 927a495 | 2017-07-03 11:25:09 -0700 | [diff] [blame] | 1187 | size_t actual_tag_len; |
| 1188 | if (!aead_aes_gcm_init_impl(gcm_ctx, &actual_tag_len, key, key_len, |
| 1189 | requested_tag_len)) { |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1190 | OPENSSL_free(gcm_ctx); |
| 1191 | return 0; |
| 1192 | } |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1193 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1194 | ctx->aead_state = gcm_ctx; |
Robert Sloan | 927a495 | 2017-07-03 11:25:09 -0700 | [diff] [blame] | 1195 | ctx->tag_len = actual_tag_len; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1196 | return 1; |
| 1197 | } |
| 1198 | |
| 1199 | static void aead_aes_gcm_cleanup(EVP_AEAD_CTX *ctx) { |
| 1200 | struct aead_aes_gcm_ctx *gcm_ctx = ctx->aead_state; |
| 1201 | OPENSSL_cleanse(gcm_ctx, sizeof(struct aead_aes_gcm_ctx)); |
| 1202 | OPENSSL_free(gcm_ctx); |
| 1203 | } |
| 1204 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1205 | static int aead_aes_gcm_seal_scatter(const EVP_AEAD_CTX *ctx, uint8_t *out, |
| 1206 | uint8_t *out_tag, size_t *out_tag_len, |
| 1207 | size_t max_out_tag_len, |
| 1208 | const uint8_t *nonce, size_t nonce_len, |
| 1209 | const uint8_t *in, size_t in_len, |
Robert Sloan | 927a495 | 2017-07-03 11:25:09 -0700 | [diff] [blame] | 1210 | const uint8_t *extra_in, |
| 1211 | size_t extra_in_len, |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1212 | const uint8_t *ad, size_t ad_len) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1213 | const struct aead_aes_gcm_ctx *gcm_ctx = ctx->aead_state; |
| 1214 | GCM128_CONTEXT gcm; |
| 1215 | |
Robert Sloan | 927a495 | 2017-07-03 11:25:09 -0700 | [diff] [blame] | 1216 | if (extra_in_len + ctx->tag_len < ctx->tag_len) { |
| 1217 | OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE); |
| 1218 | return 0; |
| 1219 | } |
Robert Sloan | fe7cd21 | 2017-08-07 09:03:39 -0700 | [diff] [blame] | 1220 | if (max_out_tag_len < extra_in_len + ctx->tag_len) { |
Robert Sloan | 927a495 | 2017-07-03 11:25:09 -0700 | [diff] [blame] | 1221 | OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BUFFER_TOO_SMALL); |
| 1222 | return 0; |
| 1223 | } |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1224 | if (nonce_len == 0) { |
| 1225 | OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_NONCE_SIZE); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1226 | return 0; |
| 1227 | } |
| 1228 | |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 1229 | const AES_KEY *key = &gcm_ctx->ks.ks; |
| 1230 | |
Robert Sloan | 69939df | 2017-01-09 10:53:07 -0800 | [diff] [blame] | 1231 | OPENSSL_memcpy(&gcm, &gcm_ctx->gcm, sizeof(gcm)); |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 1232 | CRYPTO_gcm128_setiv(&gcm, key, nonce, nonce_len); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1233 | |
| 1234 | if (ad_len > 0 && !CRYPTO_gcm128_aad(&gcm, ad, ad_len)) { |
| 1235 | return 0; |
| 1236 | } |
| 1237 | |
| 1238 | if (gcm_ctx->ctr) { |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 1239 | if (!CRYPTO_gcm128_encrypt_ctr32(&gcm, key, in, out, in_len, |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1240 | gcm_ctx->ctr)) { |
| 1241 | return 0; |
| 1242 | } |
| 1243 | } else { |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 1244 | if (!CRYPTO_gcm128_encrypt(&gcm, key, in, out, in_len)) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1245 | return 0; |
| 1246 | } |
| 1247 | } |
| 1248 | |
Robert Sloan | 927a495 | 2017-07-03 11:25:09 -0700 | [diff] [blame] | 1249 | if (extra_in_len) { |
| 1250 | if (gcm_ctx->ctr) { |
| 1251 | if (!CRYPTO_gcm128_encrypt_ctr32(&gcm, key, extra_in, out_tag, |
| 1252 | extra_in_len, gcm_ctx->ctr)) { |
| 1253 | return 0; |
| 1254 | } |
| 1255 | } else { |
| 1256 | if (!CRYPTO_gcm128_encrypt(&gcm, key, extra_in, out_tag, extra_in_len)) { |
| 1257 | return 0; |
| 1258 | } |
| 1259 | } |
| 1260 | } |
| 1261 | |
| 1262 | CRYPTO_gcm128_tag(&gcm, out_tag + extra_in_len, ctx->tag_len); |
| 1263 | *out_tag_len = ctx->tag_len + extra_in_len; |
| 1264 | |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1265 | return 1; |
| 1266 | } |
| 1267 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1268 | static int aead_aes_gcm_open_gather(const EVP_AEAD_CTX *ctx, uint8_t *out, |
| 1269 | const uint8_t *nonce, size_t nonce_len, |
| 1270 | const uint8_t *in, size_t in_len, |
| 1271 | const uint8_t *in_tag, size_t in_tag_len, |
| 1272 | const uint8_t *ad, size_t ad_len) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1273 | const struct aead_aes_gcm_ctx *gcm_ctx = ctx->aead_state; |
| 1274 | uint8_t tag[EVP_AEAD_AES_GCM_TAG_LEN]; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1275 | GCM128_CONTEXT gcm; |
| 1276 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1277 | if (nonce_len == 0) { |
| 1278 | OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_NONCE_SIZE); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1279 | return 0; |
| 1280 | } |
| 1281 | |
Robert Sloan | 927a495 | 2017-07-03 11:25:09 -0700 | [diff] [blame] | 1282 | if (in_tag_len != ctx->tag_len) { |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1283 | OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1284 | return 0; |
| 1285 | } |
| 1286 | |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 1287 | const AES_KEY *key = &gcm_ctx->ks.ks; |
| 1288 | |
Robert Sloan | 69939df | 2017-01-09 10:53:07 -0800 | [diff] [blame] | 1289 | OPENSSL_memcpy(&gcm, &gcm_ctx->gcm, sizeof(gcm)); |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 1290 | CRYPTO_gcm128_setiv(&gcm, key, nonce, nonce_len); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1291 | |
| 1292 | if (!CRYPTO_gcm128_aad(&gcm, ad, ad_len)) { |
| 1293 | return 0; |
| 1294 | } |
| 1295 | |
| 1296 | if (gcm_ctx->ctr) { |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1297 | if (!CRYPTO_gcm128_decrypt_ctr32(&gcm, key, in, out, in_len, |
| 1298 | gcm_ctx->ctr)) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1299 | return 0; |
| 1300 | } |
| 1301 | } else { |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1302 | if (!CRYPTO_gcm128_decrypt(&gcm, key, in, out, in_len)) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1303 | return 0; |
| 1304 | } |
| 1305 | } |
| 1306 | |
Robert Sloan | 927a495 | 2017-07-03 11:25:09 -0700 | [diff] [blame] | 1307 | CRYPTO_gcm128_tag(&gcm, tag, ctx->tag_len); |
| 1308 | if (CRYPTO_memcmp(tag, in_tag, ctx->tag_len) != 0) { |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 1309 | OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1310 | return 0; |
| 1311 | } |
| 1312 | |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1313 | return 1; |
| 1314 | } |
| 1315 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1316 | DEFINE_METHOD_FUNCTION(EVP_AEAD, EVP_aead_aes_128_gcm) { |
| 1317 | memset(out, 0, sizeof(EVP_AEAD)); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1318 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1319 | out->key_len = 16; |
| 1320 | out->nonce_len = 12; |
| 1321 | out->overhead = EVP_AEAD_AES_GCM_TAG_LEN; |
| 1322 | out->max_tag_len = EVP_AEAD_AES_GCM_TAG_LEN; |
Robert Sloan | 927a495 | 2017-07-03 11:25:09 -0700 | [diff] [blame] | 1323 | out->seal_scatter_supports_extra_in = 1; |
| 1324 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1325 | out->init = aead_aes_gcm_init; |
| 1326 | out->cleanup = aead_aes_gcm_cleanup; |
| 1327 | out->seal_scatter = aead_aes_gcm_seal_scatter; |
| 1328 | out->open_gather = aead_aes_gcm_open_gather; |
| 1329 | } |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1330 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1331 | DEFINE_METHOD_FUNCTION(EVP_AEAD, EVP_aead_aes_256_gcm) { |
| 1332 | memset(out, 0, sizeof(EVP_AEAD)); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1333 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1334 | out->key_len = 32; |
| 1335 | out->nonce_len = 12; |
| 1336 | out->overhead = EVP_AEAD_AES_GCM_TAG_LEN; |
| 1337 | out->max_tag_len = EVP_AEAD_AES_GCM_TAG_LEN; |
Robert Sloan | 927a495 | 2017-07-03 11:25:09 -0700 | [diff] [blame] | 1338 | out->seal_scatter_supports_extra_in = 1; |
| 1339 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1340 | out->init = aead_aes_gcm_init; |
| 1341 | out->cleanup = aead_aes_gcm_cleanup; |
| 1342 | out->seal_scatter = aead_aes_gcm_seal_scatter; |
| 1343 | out->open_gather = aead_aes_gcm_open_gather; |
| 1344 | } |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1345 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1346 | static int aead_aes_gcm_tls12_init(EVP_AEAD_CTX *ctx, const uint8_t *key, |
Robert Sloan | 927a495 | 2017-07-03 11:25:09 -0700 | [diff] [blame] | 1347 | size_t key_len, size_t requested_tag_len) { |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1348 | struct aead_aes_gcm_tls12_ctx *gcm_ctx; |
| 1349 | gcm_ctx = OPENSSL_malloc(sizeof(struct aead_aes_gcm_tls12_ctx)); |
| 1350 | if (gcm_ctx == NULL) { |
| 1351 | return 0; |
| 1352 | } |
Robert Sloan | 9254e68 | 2017-04-24 09:42:06 -0700 | [diff] [blame] | 1353 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1354 | gcm_ctx->counter = 0; |
| 1355 | |
Robert Sloan | 927a495 | 2017-07-03 11:25:09 -0700 | [diff] [blame] | 1356 | size_t actual_tag_len; |
| 1357 | if (!aead_aes_gcm_init_impl(&gcm_ctx->gcm_ctx, &actual_tag_len, key, key_len, |
| 1358 | requested_tag_len)) { |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1359 | OPENSSL_free(gcm_ctx); |
| 1360 | return 0; |
| 1361 | } |
| 1362 | |
| 1363 | ctx->aead_state = gcm_ctx; |
Robert Sloan | 927a495 | 2017-07-03 11:25:09 -0700 | [diff] [blame] | 1364 | ctx->tag_len = actual_tag_len; |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1365 | return 1; |
| 1366 | } |
| 1367 | |
| 1368 | static void aead_aes_gcm_tls12_cleanup(EVP_AEAD_CTX *ctx) { |
| 1369 | struct aead_aes_gcm_tls12_ctx *gcm_ctx = ctx->aead_state; |
| 1370 | OPENSSL_cleanse(gcm_ctx, sizeof(struct aead_aes_gcm_tls12_ctx)); |
| 1371 | OPENSSL_free(gcm_ctx); |
| 1372 | } |
| 1373 | |
| 1374 | static int aead_aes_gcm_tls12_seal_scatter( |
| 1375 | const EVP_AEAD_CTX *ctx, uint8_t *out, uint8_t *out_tag, |
| 1376 | size_t *out_tag_len, size_t max_out_tag_len, const uint8_t *nonce, |
Robert Sloan | 927a495 | 2017-07-03 11:25:09 -0700 | [diff] [blame] | 1377 | size_t nonce_len, const uint8_t *in, size_t in_len, const uint8_t *extra_in, |
| 1378 | size_t extra_in_len, const uint8_t *ad, size_t ad_len) { |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1379 | struct aead_aes_gcm_tls12_ctx *gcm_ctx = ctx->aead_state; |
| 1380 | if (gcm_ctx->counter == UINT64_MAX) { |
| 1381 | OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_NONCE); |
| 1382 | return 0; |
| 1383 | } |
| 1384 | |
| 1385 | if (nonce_len != 12) { |
Robert Sloan | 9254e68 | 2017-04-24 09:42:06 -0700 | [diff] [blame] | 1386 | OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_NONCE_SIZE); |
| 1387 | return 0; |
| 1388 | } |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1389 | |
| 1390 | const uint64_t be_counter = CRYPTO_bswap8(gcm_ctx->counter); |
| 1391 | if (OPENSSL_memcmp((uint8_t *)&be_counter, nonce + nonce_len - 8, 8) != 0) { |
| 1392 | OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_NONCE); |
Robert Sloan | 9254e68 | 2017-04-24 09:42:06 -0700 | [diff] [blame] | 1393 | return 0; |
| 1394 | } |
| 1395 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1396 | gcm_ctx->counter++; |
Robert Sloan | 9254e68 | 2017-04-24 09:42:06 -0700 | [diff] [blame] | 1397 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1398 | return aead_aes_gcm_seal_scatter(ctx, out, out_tag, out_tag_len, |
| 1399 | max_out_tag_len, nonce, nonce_len, in, |
Robert Sloan | 927a495 | 2017-07-03 11:25:09 -0700 | [diff] [blame] | 1400 | in_len, extra_in, extra_in_len, ad, ad_len); |
Robert Sloan | 9254e68 | 2017-04-24 09:42:06 -0700 | [diff] [blame] | 1401 | } |
| 1402 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1403 | DEFINE_METHOD_FUNCTION(EVP_AEAD, EVP_aead_aes_128_gcm_tls12) { |
| 1404 | memset(out, 0, sizeof(EVP_AEAD)); |
Robert Sloan | 9254e68 | 2017-04-24 09:42:06 -0700 | [diff] [blame] | 1405 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1406 | out->key_len = 16; |
| 1407 | out->nonce_len = 12; |
| 1408 | out->overhead = EVP_AEAD_AES_GCM_TAG_LEN; |
| 1409 | out->max_tag_len = EVP_AEAD_AES_GCM_TAG_LEN; |
Robert Sloan | 927a495 | 2017-07-03 11:25:09 -0700 | [diff] [blame] | 1410 | out->seal_scatter_supports_extra_in = 1; |
| 1411 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1412 | out->init = aead_aes_gcm_tls12_init; |
| 1413 | out->cleanup = aead_aes_gcm_tls12_cleanup; |
| 1414 | out->seal_scatter = aead_aes_gcm_tls12_seal_scatter; |
| 1415 | out->open_gather = aead_aes_gcm_open_gather; |
Robert Sloan | 9254e68 | 2017-04-24 09:42:06 -0700 | [diff] [blame] | 1416 | } |
| 1417 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1418 | DEFINE_METHOD_FUNCTION(EVP_AEAD, EVP_aead_aes_256_gcm_tls12) { |
| 1419 | memset(out, 0, sizeof(EVP_AEAD)); |
Robert Sloan | 9254e68 | 2017-04-24 09:42:06 -0700 | [diff] [blame] | 1420 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1421 | out->key_len = 32; |
| 1422 | out->nonce_len = 12; |
| 1423 | out->overhead = EVP_AEAD_AES_GCM_TAG_LEN; |
| 1424 | out->max_tag_len = EVP_AEAD_AES_GCM_TAG_LEN; |
Robert Sloan | 927a495 | 2017-07-03 11:25:09 -0700 | [diff] [blame] | 1425 | out->seal_scatter_supports_extra_in = 1; |
| 1426 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1427 | out->init = aead_aes_gcm_tls12_init; |
| 1428 | out->cleanup = aead_aes_gcm_tls12_cleanup; |
| 1429 | out->seal_scatter = aead_aes_gcm_tls12_seal_scatter; |
| 1430 | out->open_gather = aead_aes_gcm_open_gather; |
Robert Sloan | 9254e68 | 2017-04-24 09:42:06 -0700 | [diff] [blame] | 1431 | } |
| 1432 | |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1433 | int EVP_has_aes_hardware(void) { |
| 1434 | #if defined(OPENSSL_X86) || defined(OPENSSL_X86_64) |
| 1435 | return aesni_capable() && crypto_gcm_clmul_enabled(); |
| 1436 | #elif defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64) |
Kenny Root | e99801b | 2015-11-06 15:31:15 -0800 | [diff] [blame] | 1437 | return hwaes_capable() && CRYPTO_is_ARMv8_PMULL_capable(); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1438 | #else |
| 1439 | return 0; |
| 1440 | #endif |
| 1441 | } |