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| 1 /* crypto/evp/e_des.c */ | |
| 2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) | |
| 3 * All rights reserved. | |
| 4 * | |
| 5 * This package is an SSL implementation written | |
| 6 * by Eric Young (eay@cryptsoft.com). | |
| 7 * The implementation was written so as to conform with Netscapes SSL. | |
| 8 * | |
| 9 * This library is free for commercial and non-commercial use as long as | |
| 10 * the following conditions are aheared to. The following conditions | |
| 11 * apply to all code found in this distribution, be it the RC4, RSA, | |
| 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
| 13 * included with this distribution is covered by the same copyright terms | |
| 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
| 15 * | |
| 16 * Copyright remains Eric Young's, and as such any Copyright notices in | |
| 17 * the code are not to be removed. | |
| 18 * If this package is used in a product, Eric Young should be given attribution | |
| 19 * as the author of the parts of the library used. | |
| 20 * This can be in the form of a textual message at program startup or | |
| 21 * in documentation (online or textual) provided with the package. | |
| 22 * | |
| 23 * Redistribution and use in source and binary forms, with or without | |
| 24 * modification, are permitted provided that the following conditions | |
| 25 * are met: | |
| 26 * 1. Redistributions of source code must retain the copyright | |
| 27 * notice, this list of conditions and the following disclaimer. | |
| 28 * 2. Redistributions in binary form must reproduce the above copyright | |
| 29 * notice, this list of conditions and the following disclaimer in the | |
| 30 * documentation and/or other materials provided with the distribution. | |
| 31 * 3. All advertising materials mentioning features or use of this software | |
| 32 * must display the following acknowledgement: | |
| 33 * "This product includes cryptographic software written by | |
| 34 * Eric Young (eay@cryptsoft.com)" | |
| 35 * The word 'cryptographic' can be left out if the rouines from the library | |
| 36 * being used are not cryptographic related :-). | |
| 37 * 4. If you include any Windows specific code (or a derivative thereof) from | |
| 38 * the apps directory (application code) you must include an acknowledgement: | |
| 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
| 40 * | |
| 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | |
| 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
| 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 51 * SUCH DAMAGE. | |
| 52 * | |
| 53 * The licence and distribution terms for any publically available version or | |
| 54 * derivative of this code cannot be changed. i.e. this code cannot simply be | |
| 55 * copied and put under another distribution licence | |
| 56 * [including the GNU Public Licence.] | |
| 57 */ | |
| 58 | |
| 59 #include <stdio.h> | |
| 60 #include "cryptlib.h" | |
| 61 #ifndef OPENSSL_NO_DES | |
| 62 #include <openssl/evp.h> | |
| 63 #include <openssl/objects.h> | |
| 64 #include "evp_locl.h" | |
| 65 #include <openssl/des.h> | |
| 66 #include <openssl/rand.h> | |
| 67 | |
| 68 static int des_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
| 69 const unsigned char *iv, int enc); | |
| 70 static int des_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr); | |
| 71 | |
| 72 /* Because of various casts and different names can't use IMPLEMENT_BLOCK_CIPHER
*/ | |
| 73 | |
| 74 static int des_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
| 75 const unsigned char *in, size_t inl) | |
| 76 { | |
| 77 BLOCK_CIPHER_ecb_loop() | |
| 78 DES_ecb_encrypt((DES_cblock *)(in + i), (DES_cblock *)(out + i),
ctx->cipher_data, ctx->encrypt); | |
| 79 return 1; | |
| 80 } | |
| 81 | |
| 82 static int des_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
| 83 const unsigned char *in, size_t inl) | |
| 84 { | |
| 85 while(inl>=EVP_MAXCHUNK) | |
| 86 { | |
| 87 DES_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK, ctx->cipher_data, | |
| 88 (DES_cblock *)ctx->iv, &ctx->num); | |
| 89 inl-=EVP_MAXCHUNK; | |
| 90 in +=EVP_MAXCHUNK; | |
| 91 out+=EVP_MAXCHUNK; | |
| 92 } | |
| 93 if (inl) | |
| 94 DES_ofb64_encrypt(in, out, (long)inl, ctx->cipher_data, | |
| 95 (DES_cblock *)ctx->iv, &ctx->num); | |
| 96 return 1; | |
| 97 } | |
| 98 | |
| 99 static int des_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
| 100 const unsigned char *in, size_t inl) | |
| 101 { | |
| 102 while(inl>=EVP_MAXCHUNK) | |
| 103 { | |
| 104 DES_ncbc_encrypt(in, out, (long)EVP_MAXCHUNK, ctx->cipher_data, | |
| 105 (DES_cblock *)ctx->iv, ctx->encrypt); | |
| 106 inl-=EVP_MAXCHUNK; | |
| 107 in +=EVP_MAXCHUNK; | |
| 108 out+=EVP_MAXCHUNK; | |
| 109 } | |
| 110 if (inl) | |
| 111 DES_ncbc_encrypt(in, out, (long)inl, ctx->cipher_data, | |
| 112 (DES_cblock *)ctx->iv, ctx->encrypt); | |
| 113 return 1; | |
| 114 } | |
| 115 | |
| 116 static int des_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
| 117 const unsigned char *in, size_t inl) | |
| 118 { | |
| 119 while(inl>=EVP_MAXCHUNK) | |
| 120 { | |
| 121 DES_cfb64_encrypt(in,out, (long)EVP_MAXCHUNK, ctx->cipher_data, | |
| 122 (DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt); | |
| 123 inl-=EVP_MAXCHUNK; | |
| 124 in +=EVP_MAXCHUNK; | |
| 125 out+=EVP_MAXCHUNK; | |
| 126 } | |
| 127 if (inl) | |
| 128 DES_cfb64_encrypt(in, out, (long)inl, ctx->cipher_data, | |
| 129 (DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt); | |
| 130 return 1; | |
| 131 } | |
| 132 | |
| 133 /* Although we have a CFB-r implementation for DES, it doesn't pack the right | |
| 134 way, so wrap it here */ | |
| 135 static int des_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
| 136 const unsigned char *in, size_t inl) | |
| 137 { | |
| 138 size_t n,chunk=EVP_MAXCHUNK/8; | |
| 139 unsigned char c[1],d[1]; | |
| 140 | |
| 141 if (inl<chunk) chunk=inl; | |
| 142 | |
| 143 while (inl && inl>=chunk) | |
| 144 { | |
| 145 for(n=0 ; n < chunk*8; ++n) | |
| 146 { | |
| 147 c[0]=(in[n/8]&(1 << (7-n%8))) ? 0x80 : 0; | |
| 148 DES_cfb_encrypt(c,d,1,1,ctx->cipher_data,(DES_cblock *)ctx->iv, | |
| 149 ctx->encrypt); | |
| 150 out[n/8]=(out[n/8]&~(0x80 >> (unsigned int)(n%8))) | | |
| 151 ((d[0]&0x80) >> (unsigned int)(n%8)); | |
| 152 } | |
| 153 inl-=chunk; | |
| 154 in +=chunk; | |
| 155 out+=chunk; | |
| 156 if (inl<chunk) chunk=inl; | |
| 157 } | |
| 158 | |
| 159 return 1; | |
| 160 } | |
| 161 | |
| 162 static int des_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, | |
| 163 const unsigned char *in, size_t inl) | |
| 164 { | |
| 165 while (inl>=EVP_MAXCHUNK) | |
| 166 { | |
| 167 DES_cfb_encrypt(in,out,8,(long)EVP_MAXCHUNK,ctx->cipher_data, | |
| 168 (DES_cblock *)ctx->iv,ctx->encrypt); | |
| 169 inl-=EVP_MAXCHUNK; | |
| 170 in +=EVP_MAXCHUNK; | |
| 171 out+=EVP_MAXCHUNK; | |
| 172 } | |
| 173 if (inl) | |
| 174 DES_cfb_encrypt(in,out,8,(long)inl,ctx->cipher_data, | |
| 175 (DES_cblock *)ctx->iv,ctx->encrypt); | |
| 176 return 1; | |
| 177 } | |
| 178 | |
| 179 BLOCK_CIPHER_defs(des, DES_key_schedule, NID_des, 8, 8, 8, 64, | |
| 180 EVP_CIPH_RAND_KEY, des_init_key, NULL, | |
| 181 EVP_CIPHER_set_asn1_iv, | |
| 182 EVP_CIPHER_get_asn1_iv, | |
| 183 des_ctrl) | |
| 184 | |
| 185 BLOCK_CIPHER_def_cfb(des,DES_key_schedule,NID_des,8,8,1, | |
| 186 EVP_CIPH_RAND_KEY, des_init_key,NULL, | |
| 187 EVP_CIPHER_set_asn1_iv, | |
| 188 EVP_CIPHER_get_asn1_iv,des_ctrl) | |
| 189 | |
| 190 BLOCK_CIPHER_def_cfb(des,DES_key_schedule,NID_des,8,8,8, | |
| 191 EVP_CIPH_RAND_KEY,des_init_key,NULL, | |
| 192 EVP_CIPHER_set_asn1_iv, | |
| 193 EVP_CIPHER_get_asn1_iv,des_ctrl) | |
| 194 | |
| 195 static int des_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, | |
| 196 const unsigned char *iv, int enc) | |
| 197 { | |
| 198 DES_cblock *deskey = (DES_cblock *)key; | |
| 199 #ifdef EVP_CHECK_DES_KEY | |
| 200 if(DES_set_key_checked(deskey,ctx->cipher_data) != 0) | |
| 201 return 0; | |
| 202 #else | |
| 203 DES_set_key_unchecked(deskey,ctx->cipher_data); | |
| 204 #endif | |
| 205 return 1; | |
| 206 } | |
| 207 | |
| 208 static int des_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) | |
| 209 { | |
| 210 | |
| 211 switch(type) | |
| 212 { | |
| 213 case EVP_CTRL_RAND_KEY: | |
| 214 if (RAND_bytes(ptr, 8) <= 0) | |
| 215 return 0; | |
| 216 DES_set_odd_parity((DES_cblock *)ptr); | |
| 217 return 1; | |
| 218 | |
| 219 default: | |
| 220 return -1; | |
| 221 } | |
| 222 } | |
| 223 | |
| 224 #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