Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 1 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
| 2 | * All rights reserved. |
| 3 | * |
| 4 | * This package is an SSL implementation written |
| 5 | * by Eric Young (eay@cryptsoft.com). |
| 6 | * The implementation was written so as to conform with Netscapes SSL. |
| 7 | * |
| 8 | * This library is free for commercial and non-commercial use as long as |
| 9 | * the following conditions are aheared to. The following conditions |
| 10 | * apply to all code found in this distribution, be it the RC4, RSA, |
| 11 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation |
| 12 | * included with this distribution is covered by the same copyright terms |
| 13 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). |
| 14 | * |
| 15 | * Copyright remains Eric Young's, and as such any Copyright notices in |
| 16 | * the code are not to be removed. |
| 17 | * If this package is used in a product, Eric Young should be given attribution |
| 18 | * as the author of the parts of the library used. |
| 19 | * This can be in the form of a textual message at program startup or |
| 20 | * in documentation (online or textual) provided with the package. |
| 21 | * |
| 22 | * Redistribution and use in source and binary forms, with or without |
| 23 | * modification, are permitted provided that the following conditions |
| 24 | * are met: |
| 25 | * 1. Redistributions of source code must retain the copyright |
| 26 | * notice, this list of conditions and the following disclaimer. |
| 27 | * 2. Redistributions in binary form must reproduce the above copyright |
| 28 | * notice, this list of conditions and the following disclaimer in the |
| 29 | * documentation and/or other materials provided with the distribution. |
| 30 | * 3. All advertising materials mentioning features or use of this software |
| 31 | * must display the following acknowledgement: |
| 32 | * "This product includes cryptographic software written by |
| 33 | * Eric Young (eay@cryptsoft.com)" |
| 34 | * The word 'cryptographic' can be left out if the rouines from the library |
| 35 | * being used are not cryptographic related :-). |
| 36 | * 4. If you include any Windows specific code (or a derivative thereof) from |
| 37 | * the apps directory (application code) you must include an acknowledgement: |
| 38 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
| 39 | * |
| 40 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
| 41 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 42 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 43 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 44 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 45 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 46 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 47 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 48 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 49 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 50 | * SUCH DAMAGE. |
| 51 | * |
| 52 | * The licence and distribution terms for any publically available version or |
| 53 | * derivative of this code cannot be changed. i.e. this code cannot simply be |
| 54 | * copied and put under another distribution licence |
| 55 | * [including the GNU Public Licence.] */ |
| 56 | |
| 57 | #include <string.h> |
| 58 | |
| 59 | #include <openssl/des.h> |
| 60 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame^] | 61 | #include "../../crypto/fipsmodule/des/internal.h" |
Robert Sloan | 69939df | 2017-01-09 10:53:07 -0800 | [diff] [blame] | 62 | #include "../../crypto/internal.h" |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 63 | |
| 64 | |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 65 | /* The input and output encrypted as though 64bit cfb mode is being used. The |
| 66 | * extra state information to record how much of the 64bit block we have used |
| 67 | * is contained in *num; */ |
| 68 | void DES_ede3_cfb64_encrypt(const uint8_t *in, uint8_t *out, |
| 69 | long length, DES_key_schedule *ks1, |
| 70 | DES_key_schedule *ks2, DES_key_schedule *ks3, |
| 71 | DES_cblock *ivec, int *num, int enc) { |
| 72 | uint32_t v0, v1; |
| 73 | long l = length; |
| 74 | int n = *num; |
| 75 | uint32_t ti[2]; |
| 76 | uint8_t *iv, c, cc; |
| 77 | |
| 78 | iv = ivec->bytes; |
| 79 | if (enc) { |
| 80 | while (l--) { |
| 81 | if (n == 0) { |
| 82 | c2l(iv, v0); |
| 83 | c2l(iv, v1); |
| 84 | |
| 85 | ti[0] = v0; |
| 86 | ti[1] = v1; |
| 87 | DES_encrypt3(ti, ks1, ks2, ks3); |
| 88 | v0 = ti[0]; |
| 89 | v1 = ti[1]; |
| 90 | |
| 91 | iv = ivec->bytes; |
| 92 | l2c(v0, iv); |
| 93 | l2c(v1, iv); |
| 94 | iv = ivec->bytes; |
| 95 | } |
| 96 | c = *(in++) ^ iv[n]; |
| 97 | *(out++) = c; |
| 98 | iv[n] = c; |
| 99 | n = (n + 1) & 0x07; |
| 100 | } |
| 101 | } else { |
| 102 | while (l--) { |
| 103 | if (n == 0) { |
| 104 | c2l(iv, v0); |
| 105 | c2l(iv, v1); |
| 106 | |
| 107 | ti[0] = v0; |
| 108 | ti[1] = v1; |
| 109 | DES_encrypt3(ti, ks1, ks2, ks3); |
| 110 | v0 = ti[0]; |
| 111 | v1 = ti[1]; |
| 112 | |
| 113 | iv = ivec->bytes; |
| 114 | l2c(v0, iv); |
| 115 | l2c(v1, iv); |
| 116 | iv = ivec->bytes; |
| 117 | } |
| 118 | cc = *(in++); |
| 119 | c = iv[n]; |
| 120 | iv[n] = cc; |
| 121 | *(out++) = c ^ cc; |
| 122 | n = (n + 1) & 0x07; |
| 123 | } |
| 124 | } |
| 125 | v0 = v1 = ti[0] = ti[1] = c = cc = 0; |
| 126 | *num = n; |
| 127 | } |
| 128 | |
| 129 | /* This is compatible with the single key CFB-r for DES, even thought that's |
| 130 | * not what EVP needs. */ |
| 131 | |
| 132 | void DES_ede3_cfb_encrypt(const uint8_t *in, uint8_t *out, int numbits, |
| 133 | long length, DES_key_schedule *ks1, |
| 134 | DES_key_schedule *ks2, DES_key_schedule *ks3, |
| 135 | DES_cblock *ivec, int enc) { |
| 136 | uint32_t d0, d1, v0, v1; |
| 137 | unsigned long l = length, n = ((unsigned int)numbits + 7) / 8; |
| 138 | int num = numbits, i; |
| 139 | uint32_t ti[2]; |
| 140 | uint8_t *iv; |
| 141 | uint8_t ovec[16]; |
| 142 | |
| 143 | if (num > 64) { |
| 144 | return; |
| 145 | }; |
| 146 | |
| 147 | iv = ivec->bytes; |
| 148 | c2l(iv, v0); |
| 149 | c2l(iv, v1); |
| 150 | |
| 151 | if (enc) { |
| 152 | while (l >= n) { |
| 153 | l -= n; |
| 154 | ti[0] = v0; |
| 155 | ti[1] = v1; |
| 156 | DES_encrypt3(ti, ks1, ks2, ks3); |
| 157 | c2ln(in, d0, d1, n); |
| 158 | in += n; |
| 159 | d0 ^= ti[0]; |
| 160 | d1 ^= ti[1]; |
| 161 | l2cn(d0, d1, out, n); |
| 162 | out += n; |
| 163 | /* 30-08-94 - eay - changed because l>>32 and l<<32 are bad under |
| 164 | * gcc :-( */ |
| 165 | if (num == 32) { |
| 166 | v0 = v1; |
| 167 | v1 = d0; |
| 168 | } else if (num == 64) { |
| 169 | v0 = d0; |
| 170 | v1 = d1; |
| 171 | } else { |
| 172 | iv = &ovec[0]; |
| 173 | l2c(v0, iv); |
| 174 | l2c(v1, iv); |
| 175 | l2c(d0, iv); |
| 176 | l2c(d1, iv); |
| 177 | /* shift ovec left most of the bits... */ |
Robert Sloan | 69939df | 2017-01-09 10:53:07 -0800 | [diff] [blame] | 178 | OPENSSL_memmove(ovec, ovec + num / 8, 8 + (num % 8 ? 1 : 0)); |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 179 | /* now the remaining bits */ |
| 180 | if (num % 8 != 0) { |
| 181 | for (i = 0; i < 8; ++i) { |
| 182 | ovec[i] <<= num % 8; |
| 183 | ovec[i] |= ovec[i + 1] >> (8 - num % 8); |
| 184 | } |
| 185 | } |
| 186 | iv = &ovec[0]; |
| 187 | c2l(iv, v0); |
| 188 | c2l(iv, v1); |
| 189 | } |
| 190 | } |
| 191 | } else { |
| 192 | while (l >= n) { |
| 193 | l -= n; |
| 194 | ti[0] = v0; |
| 195 | ti[1] = v1; |
| 196 | DES_encrypt3(ti, ks1, ks2, ks3); |
| 197 | c2ln(in, d0, d1, n); |
| 198 | in += n; |
| 199 | /* 30-08-94 - eay - changed because l>>32 and l<<32 are bad under |
| 200 | * gcc :-( */ |
| 201 | if (num == 32) { |
| 202 | v0 = v1; |
| 203 | v1 = d0; |
| 204 | } else if (num == 64) { |
| 205 | v0 = d0; |
| 206 | v1 = d1; |
| 207 | } else { |
| 208 | iv = &ovec[0]; |
| 209 | l2c(v0, iv); |
| 210 | l2c(v1, iv); |
| 211 | l2c(d0, iv); |
| 212 | l2c(d1, iv); |
| 213 | /* shift ovec left most of the bits... */ |
Robert Sloan | 69939df | 2017-01-09 10:53:07 -0800 | [diff] [blame] | 214 | OPENSSL_memmove(ovec, ovec + num / 8, 8 + (num % 8 ? 1 : 0)); |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 215 | /* now the remaining bits */ |
| 216 | if (num % 8 != 0) { |
| 217 | for (i = 0; i < 8; ++i) { |
| 218 | ovec[i] <<= num % 8; |
| 219 | ovec[i] |= ovec[i + 1] >> (8 - num % 8); |
| 220 | } |
| 221 | } |
| 222 | iv = &ovec[0]; |
| 223 | c2l(iv, v0); |
| 224 | c2l(iv, v1); |
| 225 | } |
| 226 | d0 ^= ti[0]; |
| 227 | d1 ^= ti[1]; |
| 228 | l2cn(d0, d1, out, n); |
| 229 | out += n; |
| 230 | } |
| 231 | } |
| 232 | |
| 233 | iv = ivec->bytes; |
| 234 | l2c(v0, iv); |
| 235 | l2c(v1, iv); |
| 236 | v0 = v1 = d0 = d1 = ti[0] = ti[1] = 0; |
| 237 | } |