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| 1 /* ==================================================================== | |
| 2 * Copyright (c) 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 * licensing@OpenSSL.org. | |
| 25 * | |
| 26 * 5. Products derived from this software may not be called "OpenSSL" | |
| 27 * nor may "OpenSSL" appear in their names without prior written | |
| 28 * permission of the OpenSSL Project. | |
| 29 * | |
| 30 * 6. Redistributions of any form whatsoever must retain the following | |
| 31 * acknowledgment: | |
| 32 * "This product includes software developed by the OpenSSL Project | |
| 33 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" | |
| 34 * | |
| 35 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
| 36 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 37 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 38 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
| 39 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 40 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
| 41 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
| 42 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 43 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
| 44 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 45 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
| 46 * OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 47 * ==================================================================== | |
| 48 */ | |
| 49 | |
| 50 #include <openssl/opensslconf.h> | |
| 51 | |
| 52 #include <stdio.h> | |
| 53 #include <string.h> | |
| 54 | |
| 55 #if !defined(OPENSSL_NO_RC4) && !defined(OPENSSL_NO_MD5) | |
| 56 | |
| 57 #include <openssl/evp.h> | |
| 58 #include <openssl/objects.h> | |
| 59 #include <openssl/rc4.h> | |
| 60 #include <openssl/md5.h> | |
| 61 | |
| 62 #ifndef EVP_CIPH_FLAG_AEAD_CIPHER | |
| 63 #define EVP_CIPH_FLAG_AEAD_CIPHER 0x200000 | |
| 64 #define EVP_CTRL_AEAD_TLS1_AAD 0x16 | |
| 65 #define EVP_CTRL_AEAD_SET_MAC_KEY 0x17 | |
| 66 #endif | |
| 67 | |
| 68 /* FIXME: surely this is available elsewhere? */ | |
| 69 #define EVP_RC4_KEY_SIZE 16 | |
| 70 | |
| 71 typedef struct | |
| 72 { | |
| 73 RC4_KEY ks; | |
| 74 MD5_CTX head,tail,md; | |
| 75 size_t payload_length; | |
| 76 } EVP_RC4_HMAC_MD5; | |
| 77 | |
| 78 #define NO_PAYLOAD_LENGTH ((size_t)-1) | |
| 79 | |
| 80 void rc4_md5_enc (RC4_KEY *key, const void *in0, void *out, | |
| 81 MD5_CTX *ctx,const void *inp,size_t blocks); | |
| 82 | |
| 83 #define data(ctx) ((EVP_RC4_HMAC_MD5 *)(ctx)->cipher_data) | |
| 84 | |
| 85 static int rc4_hmac_md5_init_key(EVP_CIPHER_CTX *ctx, | |
| 86 const unsigned char *inkey, | |
| 87 const unsigned char *iv, int enc) | |
| 88 { | |
| 89 EVP_RC4_HMAC_MD5 *key = data(ctx); | |
| 90 | |
| 91 RC4_set_key(&key->ks,EVP_CIPHER_CTX_key_length(ctx), | |
| 92 inkey); | |
| 93 | |
| 94 MD5_Init(&key->head); /* handy when benchmarking */ | |
| 95 key->tail = key->head; | |
| 96 key->md = key->head; | |
| 97 | |
| 98 key->payload_length = NO_PAYLOAD_LENGTH; | |
| 99 | |
| 100 return 1; | |
| 101 } | |
| 102 | |
| 103 #if !defined(OPENSSL_NO_ASM) && ( \ | |
| 104 defined(__x86_64) || defined(__x86_64__) || \ | |
| 105 defined(_M_AMD64) || defined(_M_X64) || \ | |
| 106 defined(__INTEL__) ) && \ | |
| 107 !(defined(__APPLE__) && defined(__MACH__)) | |
| 108 #define STITCHED_CALL | |
| 109 #endif | |
| 110 | |
| 111 #if !defined(STITCHED_CALL) | |
| 112 #define rc4_off 0 | |
| 113 #define md5_off 0 | |
| 114 #endif | |
| 115 | |
| 116 static int rc4_hmac_md5_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
| 117 const unsigned char *in, size_t len) | |
| 118 { | |
| 119 EVP_RC4_HMAC_MD5 *key = data(ctx); | |
| 120 #if defined(STITCHED_CALL) | |
| 121 size_t rc4_off = 32-1-(key->ks.x&(32-1)), /* 32 is $MOD from rc4_m
d5-x86_64.pl */ | |
| 122 md5_off = MD5_CBLOCK-key->md.num, | |
| 123 blocks; | |
| 124 unsigned int l; | |
| 125 extern unsigned int OPENSSL_ia32cap_P[]; | |
| 126 #endif | |
| 127 size_t plen = key->payload_length; | |
| 128 | |
| 129 if (plen!=NO_PAYLOAD_LENGTH && len!=(plen+MD5_DIGEST_LENGTH)) return 0; | |
| 130 | |
| 131 if (ctx->encrypt) { | |
| 132 if (plen==NO_PAYLOAD_LENGTH) plen = len; | |
| 133 #if defined(STITCHED_CALL) | |
| 134 /* cipher has to "fall behind" */ | |
| 135 if (rc4_off>md5_off) md5_off+=MD5_CBLOCK; | |
| 136 | |
| 137 if (plen>md5_off && (blocks=(plen-md5_off)/MD5_CBLOCK) && | |
| 138 (OPENSSL_ia32cap_P[0]&(1<<20))==0) { | |
| 139 MD5_Update(&key->md,in,md5_off); | |
| 140 RC4(&key->ks,rc4_off,in,out); | |
| 141 | |
| 142 rc4_md5_enc(&key->ks,in+rc4_off,out+rc4_off, | |
| 143 &key->md,in+md5_off,blocks); | |
| 144 blocks *= MD5_CBLOCK; | |
| 145 rc4_off += blocks; | |
| 146 md5_off += blocks; | |
| 147 key->md.Nh += blocks>>29; | |
| 148 key->md.Nl += blocks<<=3; | |
| 149 if (key->md.Nl<(unsigned int)blocks) key->md.Nh++; | |
| 150 } else { | |
| 151 rc4_off = 0; | |
| 152 md5_off = 0; | |
| 153 } | |
| 154 #endif | |
| 155 MD5_Update(&key->md,in+md5_off,plen-md5_off); | |
| 156 | |
| 157 if (plen!=len) { /* "TLS" mode of operation */ | |
| 158 if (in!=out) | |
| 159 memcpy(out+rc4_off,in+rc4_off,plen-rc4_off); | |
| 160 | |
| 161 /* calculate HMAC and append it to payload */ | |
| 162 MD5_Final(out+plen,&key->md); | |
| 163 key->md = key->tail; | |
| 164 MD5_Update(&key->md,out+plen,MD5_DIGEST_LENGTH); | |
| 165 MD5_Final(out+plen,&key->md); | |
| 166 /* encrypt HMAC at once */ | |
| 167 RC4(&key->ks,len-rc4_off,out+rc4_off,out+rc4_off); | |
| 168 } else { | |
| 169 RC4(&key->ks,len-rc4_off,in+rc4_off,out+rc4_off); | |
| 170 } | |
| 171 } else { | |
| 172 unsigned char mac[MD5_DIGEST_LENGTH]; | |
| 173 #if defined(STITCHED_CALL) | |
| 174 /* digest has to "fall behind" */ | |
| 175 if (md5_off>rc4_off) rc4_off += 2*MD5_CBLOCK; | |
| 176 else rc4_off += MD5_CBLOCK; | |
| 177 | |
| 178 if (len>rc4_off && (blocks=(len-rc4_off)/MD5_CBLOCK) && | |
| 179 (OPENSSL_ia32cap_P[0]&(1<<20))==0) { | |
| 180 RC4(&key->ks,rc4_off,in,out); | |
| 181 MD5_Update(&key->md,out,md5_off); | |
| 182 | |
| 183 rc4_md5_enc(&key->ks,in+rc4_off,out+rc4_off, | |
| 184 &key->md,out+md5_off,blocks); | |
| 185 blocks *= MD5_CBLOCK; | |
| 186 rc4_off += blocks; | |
| 187 md5_off += blocks; | |
| 188 l = (key->md.Nl+(blocks<<3))&0xffffffffU; | |
| 189 if (l<key->md.Nl) key->md.Nh++; | |
| 190 key->md.Nl = l; | |
| 191 key->md.Nh += blocks>>29; | |
| 192 } else { | |
| 193 md5_off=0; | |
| 194 rc4_off=0; | |
| 195 } | |
| 196 #endif | |
| 197 /* decrypt HMAC at once */ | |
| 198 RC4(&key->ks,len-rc4_off,in+rc4_off,out+rc4_off); | |
| 199 if (plen!=NO_PAYLOAD_LENGTH) { /* "TLS" mode of operation */ | |
| 200 MD5_Update(&key->md,out+md5_off,plen-md5_off); | |
| 201 | |
| 202 /* calculate HMAC and verify it */ | |
| 203 MD5_Final(mac,&key->md); | |
| 204 key->md = key->tail; | |
| 205 MD5_Update(&key->md,mac,MD5_DIGEST_LENGTH); | |
| 206 MD5_Final(mac,&key->md); | |
| 207 | |
| 208 if (memcmp(out+plen,mac,MD5_DIGEST_LENGTH)) | |
| 209 return 0; | |
| 210 } else { | |
| 211 MD5_Update(&key->md,out+md5_off,len-md5_off); | |
| 212 } | |
| 213 } | |
| 214 | |
| 215 key->payload_length = NO_PAYLOAD_LENGTH; | |
| 216 | |
| 217 return 1; | |
| 218 } | |
| 219 | |
| 220 static int rc4_hmac_md5_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr) | |
| 221 { | |
| 222 EVP_RC4_HMAC_MD5 *key = data(ctx); | |
| 223 | |
| 224 switch (type) | |
| 225 { | |
| 226 case EVP_CTRL_AEAD_SET_MAC_KEY: | |
| 227 { | |
| 228 unsigned int i; | |
| 229 unsigned char hmac_key[64]; | |
| 230 | |
| 231 memset (hmac_key,0,sizeof(hmac_key)); | |
| 232 | |
| 233 if (arg > (int)sizeof(hmac_key)) { | |
| 234 MD5_Init(&key->head); | |
| 235 MD5_Update(&key->head,ptr,arg); | |
| 236 MD5_Final(hmac_key,&key->head); | |
| 237 } else { | |
| 238 memcpy(hmac_key,ptr,arg); | |
| 239 } | |
| 240 | |
| 241 for (i=0;i<sizeof(hmac_key);i++) | |
| 242 hmac_key[i] ^= 0x36; /* ipad */ | |
| 243 MD5_Init(&key->head); | |
| 244 MD5_Update(&key->head,hmac_key,sizeof(hmac_key)); | |
| 245 | |
| 246 for (i=0;i<sizeof(hmac_key);i++) | |
| 247 hmac_key[i] ^= 0x36^0x5c; /* opad */ | |
| 248 MD5_Init(&key->tail); | |
| 249 MD5_Update(&key->tail,hmac_key,sizeof(hmac_key)); | |
| 250 | |
| 251 return 1; | |
| 252 } | |
| 253 case EVP_CTRL_AEAD_TLS1_AAD: | |
| 254 { | |
| 255 unsigned char *p=ptr; | |
| 256 unsigned int len=p[arg-2]<<8|p[arg-1]; | |
| 257 | |
| 258 if (!ctx->encrypt) | |
| 259 { | |
| 260 len -= MD5_DIGEST_LENGTH; | |
| 261 p[arg-2] = len>>8; | |
| 262 p[arg-1] = len; | |
| 263 } | |
| 264 key->payload_length=len; | |
| 265 key->md = key->head; | |
| 266 MD5_Update(&key->md,p,arg); | |
| 267 | |
| 268 return MD5_DIGEST_LENGTH; | |
| 269 } | |
| 270 default: | |
| 271 return -1; | |
| 272 } | |
| 273 } | |
| 274 | |
| 275 static EVP_CIPHER r4_hmac_md5_cipher= | |
| 276 { | |
| 277 #ifdef NID_rc4_hmac_md5 | |
| 278 NID_rc4_hmac_md5, | |
| 279 #else | |
| 280 NID_undef, | |
| 281 #endif | |
| 282 1,EVP_RC4_KEY_SIZE,0, | |
| 283 EVP_CIPH_STREAM_CIPHER|EVP_CIPH_VARIABLE_LENGTH|EVP_CIPH_FLAG_AEAD_CIPHE
R, | |
| 284 rc4_hmac_md5_init_key, | |
| 285 rc4_hmac_md5_cipher, | |
| 286 NULL, | |
| 287 sizeof(EVP_RC4_HMAC_MD5), | |
| 288 NULL, | |
| 289 NULL, | |
| 290 rc4_hmac_md5_ctrl, | |
| 291 NULL | |
| 292 }; | |
| 293 | |
| 294 const EVP_CIPHER *EVP_rc4_hmac_md5(void) | |
| 295 { | |
| 296 return(&r4_hmac_md5_cipher); | |
| 297 } | |
| 298 #endif | |
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Chromium Code Reviews
Issue 2072073002:
Delete bundled copy of OpenSSL and replace with README. (Closed)
Base URL: https://chromium.googlesource.com/chromium/deps/openssl@master