Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [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 <openssl/des.h> |
| 58 | |
| 59 | #include "internal.h" |
| 60 | |
| 61 | |
| 62 | static const uint32_t des_skb[8][64] = { |
| 63 | {/* for C bits (numbered as per FIPS 46) 1 2 3 4 5 6 */ |
| 64 | 0x00000000L, 0x00000010L, 0x20000000L, 0x20000010L, 0x00010000L, |
| 65 | 0x00010010L, 0x20010000L, 0x20010010L, 0x00000800L, 0x00000810L, |
| 66 | 0x20000800L, 0x20000810L, 0x00010800L, 0x00010810L, 0x20010800L, |
| 67 | 0x20010810L, 0x00000020L, 0x00000030L, 0x20000020L, 0x20000030L, |
| 68 | 0x00010020L, 0x00010030L, 0x20010020L, 0x20010030L, 0x00000820L, |
| 69 | 0x00000830L, 0x20000820L, 0x20000830L, 0x00010820L, 0x00010830L, |
| 70 | 0x20010820L, 0x20010830L, 0x00080000L, 0x00080010L, 0x20080000L, |
| 71 | 0x20080010L, 0x00090000L, 0x00090010L, 0x20090000L, 0x20090010L, |
| 72 | 0x00080800L, 0x00080810L, 0x20080800L, 0x20080810L, 0x00090800L, |
| 73 | 0x00090810L, 0x20090800L, 0x20090810L, 0x00080020L, 0x00080030L, |
| 74 | 0x20080020L, 0x20080030L, 0x00090020L, 0x00090030L, 0x20090020L, |
| 75 | 0x20090030L, 0x00080820L, 0x00080830L, 0x20080820L, 0x20080830L, |
| 76 | 0x00090820L, 0x00090830L, 0x20090820L, 0x20090830L, }, |
| 77 | {/* for C bits (numbered as per FIPS 46) 7 8 10 11 12 13 */ |
| 78 | 0x00000000L, 0x02000000L, 0x00002000L, 0x02002000L, 0x00200000L, |
| 79 | 0x02200000L, 0x00202000L, 0x02202000L, 0x00000004L, 0x02000004L, |
| 80 | 0x00002004L, 0x02002004L, 0x00200004L, 0x02200004L, 0x00202004L, |
| 81 | 0x02202004L, 0x00000400L, 0x02000400L, 0x00002400L, 0x02002400L, |
| 82 | 0x00200400L, 0x02200400L, 0x00202400L, 0x02202400L, 0x00000404L, |
| 83 | 0x02000404L, 0x00002404L, 0x02002404L, 0x00200404L, 0x02200404L, |
| 84 | 0x00202404L, 0x02202404L, 0x10000000L, 0x12000000L, 0x10002000L, |
| 85 | 0x12002000L, 0x10200000L, 0x12200000L, 0x10202000L, 0x12202000L, |
| 86 | 0x10000004L, 0x12000004L, 0x10002004L, 0x12002004L, 0x10200004L, |
| 87 | 0x12200004L, 0x10202004L, 0x12202004L, 0x10000400L, 0x12000400L, |
| 88 | 0x10002400L, 0x12002400L, 0x10200400L, 0x12200400L, 0x10202400L, |
| 89 | 0x12202400L, 0x10000404L, 0x12000404L, 0x10002404L, 0x12002404L, |
| 90 | 0x10200404L, 0x12200404L, 0x10202404L, 0x12202404L, }, |
| 91 | {/* for C bits (numbered as per FIPS 46) 14 15 16 17 19 20 */ |
| 92 | 0x00000000L, 0x00000001L, 0x00040000L, 0x00040001L, 0x01000000L, |
| 93 | 0x01000001L, 0x01040000L, 0x01040001L, 0x00000002L, 0x00000003L, |
| 94 | 0x00040002L, 0x00040003L, 0x01000002L, 0x01000003L, 0x01040002L, |
| 95 | 0x01040003L, 0x00000200L, 0x00000201L, 0x00040200L, 0x00040201L, |
| 96 | 0x01000200L, 0x01000201L, 0x01040200L, 0x01040201L, 0x00000202L, |
| 97 | 0x00000203L, 0x00040202L, 0x00040203L, 0x01000202L, 0x01000203L, |
| 98 | 0x01040202L, 0x01040203L, 0x08000000L, 0x08000001L, 0x08040000L, |
| 99 | 0x08040001L, 0x09000000L, 0x09000001L, 0x09040000L, 0x09040001L, |
| 100 | 0x08000002L, 0x08000003L, 0x08040002L, 0x08040003L, 0x09000002L, |
| 101 | 0x09000003L, 0x09040002L, 0x09040003L, 0x08000200L, 0x08000201L, |
| 102 | 0x08040200L, 0x08040201L, 0x09000200L, 0x09000201L, 0x09040200L, |
| 103 | 0x09040201L, 0x08000202L, 0x08000203L, 0x08040202L, 0x08040203L, |
| 104 | 0x09000202L, 0x09000203L, 0x09040202L, 0x09040203L, }, |
| 105 | {/* for C bits (numbered as per FIPS 46) 21 23 24 26 27 28 */ |
| 106 | 0x00000000L, 0x00100000L, 0x00000100L, 0x00100100L, 0x00000008L, |
| 107 | 0x00100008L, 0x00000108L, 0x00100108L, 0x00001000L, 0x00101000L, |
| 108 | 0x00001100L, 0x00101100L, 0x00001008L, 0x00101008L, 0x00001108L, |
| 109 | 0x00101108L, 0x04000000L, 0x04100000L, 0x04000100L, 0x04100100L, |
| 110 | 0x04000008L, 0x04100008L, 0x04000108L, 0x04100108L, 0x04001000L, |
| 111 | 0x04101000L, 0x04001100L, 0x04101100L, 0x04001008L, 0x04101008L, |
| 112 | 0x04001108L, 0x04101108L, 0x00020000L, 0x00120000L, 0x00020100L, |
| 113 | 0x00120100L, 0x00020008L, 0x00120008L, 0x00020108L, 0x00120108L, |
| 114 | 0x00021000L, 0x00121000L, 0x00021100L, 0x00121100L, 0x00021008L, |
| 115 | 0x00121008L, 0x00021108L, 0x00121108L, 0x04020000L, 0x04120000L, |
| 116 | 0x04020100L, 0x04120100L, 0x04020008L, 0x04120008L, 0x04020108L, |
| 117 | 0x04120108L, 0x04021000L, 0x04121000L, 0x04021100L, 0x04121100L, |
| 118 | 0x04021008L, 0x04121008L, 0x04021108L, 0x04121108L, }, |
| 119 | {/* for D bits (numbered as per FIPS 46) 1 2 3 4 5 6 */ |
| 120 | 0x00000000L, 0x10000000L, 0x00010000L, 0x10010000L, 0x00000004L, |
| 121 | 0x10000004L, 0x00010004L, 0x10010004L, 0x20000000L, 0x30000000L, |
| 122 | 0x20010000L, 0x30010000L, 0x20000004L, 0x30000004L, 0x20010004L, |
| 123 | 0x30010004L, 0x00100000L, 0x10100000L, 0x00110000L, 0x10110000L, |
| 124 | 0x00100004L, 0x10100004L, 0x00110004L, 0x10110004L, 0x20100000L, |
| 125 | 0x30100000L, 0x20110000L, 0x30110000L, 0x20100004L, 0x30100004L, |
| 126 | 0x20110004L, 0x30110004L, 0x00001000L, 0x10001000L, 0x00011000L, |
| 127 | 0x10011000L, 0x00001004L, 0x10001004L, 0x00011004L, 0x10011004L, |
| 128 | 0x20001000L, 0x30001000L, 0x20011000L, 0x30011000L, 0x20001004L, |
| 129 | 0x30001004L, 0x20011004L, 0x30011004L, 0x00101000L, 0x10101000L, |
| 130 | 0x00111000L, 0x10111000L, 0x00101004L, 0x10101004L, 0x00111004L, |
| 131 | 0x10111004L, 0x20101000L, 0x30101000L, 0x20111000L, 0x30111000L, |
| 132 | 0x20101004L, 0x30101004L, 0x20111004L, 0x30111004L, }, |
| 133 | {/* for D bits (numbered as per FIPS 46) 8 9 11 12 13 14 */ |
| 134 | 0x00000000L, 0x08000000L, 0x00000008L, 0x08000008L, 0x00000400L, |
| 135 | 0x08000400L, 0x00000408L, 0x08000408L, 0x00020000L, 0x08020000L, |
| 136 | 0x00020008L, 0x08020008L, 0x00020400L, 0x08020400L, 0x00020408L, |
| 137 | 0x08020408L, 0x00000001L, 0x08000001L, 0x00000009L, 0x08000009L, |
| 138 | 0x00000401L, 0x08000401L, 0x00000409L, 0x08000409L, 0x00020001L, |
| 139 | 0x08020001L, 0x00020009L, 0x08020009L, 0x00020401L, 0x08020401L, |
| 140 | 0x00020409L, 0x08020409L, 0x02000000L, 0x0A000000L, 0x02000008L, |
| 141 | 0x0A000008L, 0x02000400L, 0x0A000400L, 0x02000408L, 0x0A000408L, |
| 142 | 0x02020000L, 0x0A020000L, 0x02020008L, 0x0A020008L, 0x02020400L, |
| 143 | 0x0A020400L, 0x02020408L, 0x0A020408L, 0x02000001L, 0x0A000001L, |
| 144 | 0x02000009L, 0x0A000009L, 0x02000401L, 0x0A000401L, 0x02000409L, |
| 145 | 0x0A000409L, 0x02020001L, 0x0A020001L, 0x02020009L, 0x0A020009L, |
| 146 | 0x02020401L, 0x0A020401L, 0x02020409L, 0x0A020409L, }, |
| 147 | {/* for D bits (numbered as per FIPS 46) 16 17 18 19 20 21 */ |
| 148 | 0x00000000L, 0x00000100L, 0x00080000L, 0x00080100L, 0x01000000L, |
| 149 | 0x01000100L, 0x01080000L, 0x01080100L, 0x00000010L, 0x00000110L, |
| 150 | 0x00080010L, 0x00080110L, 0x01000010L, 0x01000110L, 0x01080010L, |
| 151 | 0x01080110L, 0x00200000L, 0x00200100L, 0x00280000L, 0x00280100L, |
| 152 | 0x01200000L, 0x01200100L, 0x01280000L, 0x01280100L, 0x00200010L, |
| 153 | 0x00200110L, 0x00280010L, 0x00280110L, 0x01200010L, 0x01200110L, |
| 154 | 0x01280010L, 0x01280110L, 0x00000200L, 0x00000300L, 0x00080200L, |
| 155 | 0x00080300L, 0x01000200L, 0x01000300L, 0x01080200L, 0x01080300L, |
| 156 | 0x00000210L, 0x00000310L, 0x00080210L, 0x00080310L, 0x01000210L, |
| 157 | 0x01000310L, 0x01080210L, 0x01080310L, 0x00200200L, 0x00200300L, |
| 158 | 0x00280200L, 0x00280300L, 0x01200200L, 0x01200300L, 0x01280200L, |
| 159 | 0x01280300L, 0x00200210L, 0x00200310L, 0x00280210L, 0x00280310L, |
| 160 | 0x01200210L, 0x01200310L, 0x01280210L, 0x01280310L, }, |
| 161 | {/* for D bits (numbered as per FIPS 46) 22 23 24 25 27 28 */ |
| 162 | 0x00000000L, 0x04000000L, 0x00040000L, 0x04040000L, 0x00000002L, |
| 163 | 0x04000002L, 0x00040002L, 0x04040002L, 0x00002000L, 0x04002000L, |
| 164 | 0x00042000L, 0x04042000L, 0x00002002L, 0x04002002L, 0x00042002L, |
| 165 | 0x04042002L, 0x00000020L, 0x04000020L, 0x00040020L, 0x04040020L, |
| 166 | 0x00000022L, 0x04000022L, 0x00040022L, 0x04040022L, 0x00002020L, |
| 167 | 0x04002020L, 0x00042020L, 0x04042020L, 0x00002022L, 0x04002022L, |
| 168 | 0x00042022L, 0x04042022L, 0x00000800L, 0x04000800L, 0x00040800L, |
| 169 | 0x04040800L, 0x00000802L, 0x04000802L, 0x00040802L, 0x04040802L, |
| 170 | 0x00002800L, 0x04002800L, 0x00042800L, 0x04042800L, 0x00002802L, |
| 171 | 0x04002802L, 0x00042802L, 0x04042802L, 0x00000820L, 0x04000820L, |
| 172 | 0x00040820L, 0x04040820L, 0x00000822L, 0x04000822L, 0x00040822L, |
| 173 | 0x04040822L, 0x00002820L, 0x04002820L, 0x00042820L, 0x04042820L, |
| 174 | 0x00002822L, 0x04002822L, 0x00042822L, 0x04042822L, }}; |
| 175 | |
| 176 | static const uint32_t DES_SPtrans[8][64] = { |
| 177 | {/* nibble 0 */ |
| 178 | 0x02080800L, 0x00080000L, 0x02000002L, 0x02080802L, 0x02000000L, |
| 179 | 0x00080802L, 0x00080002L, 0x02000002L, 0x00080802L, 0x02080800L, |
| 180 | 0x02080000L, 0x00000802L, 0x02000802L, 0x02000000L, 0x00000000L, |
| 181 | 0x00080002L, 0x00080000L, 0x00000002L, 0x02000800L, 0x00080800L, |
| 182 | 0x02080802L, 0x02080000L, 0x00000802L, 0x02000800L, 0x00000002L, |
| 183 | 0x00000800L, 0x00080800L, 0x02080002L, 0x00000800L, 0x02000802L, |
| 184 | 0x02080002L, 0x00000000L, 0x00000000L, 0x02080802L, 0x02000800L, |
| 185 | 0x00080002L, 0x02080800L, 0x00080000L, 0x00000802L, 0x02000800L, |
| 186 | 0x02080002L, 0x00000800L, 0x00080800L, 0x02000002L, 0x00080802L, |
| 187 | 0x00000002L, 0x02000002L, 0x02080000L, 0x02080802L, 0x00080800L, |
| 188 | 0x02080000L, 0x02000802L, 0x02000000L, 0x00000802L, 0x00080002L, |
| 189 | 0x00000000L, 0x00080000L, 0x02000000L, 0x02000802L, 0x02080800L, |
| 190 | 0x00000002L, 0x02080002L, 0x00000800L, 0x00080802L, }, |
| 191 | {/* nibble 1 */ |
| 192 | 0x40108010L, 0x00000000L, 0x00108000L, 0x40100000L, 0x40000010L, |
| 193 | 0x00008010L, 0x40008000L, 0x00108000L, 0x00008000L, 0x40100010L, |
| 194 | 0x00000010L, 0x40008000L, 0x00100010L, 0x40108000L, 0x40100000L, |
| 195 | 0x00000010L, 0x00100000L, 0x40008010L, 0x40100010L, 0x00008000L, |
| 196 | 0x00108010L, 0x40000000L, 0x00000000L, 0x00100010L, 0x40008010L, |
| 197 | 0x00108010L, 0x40108000L, 0x40000010L, 0x40000000L, 0x00100000L, |
| 198 | 0x00008010L, 0x40108010L, 0x00100010L, 0x40108000L, 0x40008000L, |
| 199 | 0x00108010L, 0x40108010L, 0x00100010L, 0x40000010L, 0x00000000L, |
| 200 | 0x40000000L, 0x00008010L, 0x00100000L, 0x40100010L, 0x00008000L, |
| 201 | 0x40000000L, 0x00108010L, 0x40008010L, 0x40108000L, 0x00008000L, |
| 202 | 0x00000000L, 0x40000010L, 0x00000010L, 0x40108010L, 0x00108000L, |
| 203 | 0x40100000L, 0x40100010L, 0x00100000L, 0x00008010L, 0x40008000L, |
| 204 | 0x40008010L, 0x00000010L, 0x40100000L, 0x00108000L, }, |
| 205 | {/* nibble 2 */ |
| 206 | 0x04000001L, 0x04040100L, 0x00000100L, 0x04000101L, 0x00040001L, |
| 207 | 0x04000000L, 0x04000101L, 0x00040100L, 0x04000100L, 0x00040000L, |
| 208 | 0x04040000L, 0x00000001L, 0x04040101L, 0x00000101L, 0x00000001L, |
| 209 | 0x04040001L, 0x00000000L, 0x00040001L, 0x04040100L, 0x00000100L, |
| 210 | 0x00000101L, 0x04040101L, 0x00040000L, 0x04000001L, 0x04040001L, |
| 211 | 0x04000100L, 0x00040101L, 0x04040000L, 0x00040100L, 0x00000000L, |
| 212 | 0x04000000L, 0x00040101L, 0x04040100L, 0x00000100L, 0x00000001L, |
| 213 | 0x00040000L, 0x00000101L, 0x00040001L, 0x04040000L, 0x04000101L, |
| 214 | 0x00000000L, 0x04040100L, 0x00040100L, 0x04040001L, 0x00040001L, |
| 215 | 0x04000000L, 0x04040101L, 0x00000001L, 0x00040101L, 0x04000001L, |
| 216 | 0x04000000L, 0x04040101L, 0x00040000L, 0x04000100L, 0x04000101L, |
| 217 | 0x00040100L, 0x04000100L, 0x00000000L, 0x04040001L, 0x00000101L, |
| 218 | 0x04000001L, 0x00040101L, 0x00000100L, 0x04040000L, }, |
| 219 | {/* nibble 3 */ |
| 220 | 0x00401008L, 0x10001000L, 0x00000008L, 0x10401008L, 0x00000000L, |
| 221 | 0x10400000L, 0x10001008L, 0x00400008L, 0x10401000L, 0x10000008L, |
| 222 | 0x10000000L, 0x00001008L, 0x10000008L, 0x00401008L, 0x00400000L, |
| 223 | 0x10000000L, 0x10400008L, 0x00401000L, 0x00001000L, 0x00000008L, |
| 224 | 0x00401000L, 0x10001008L, 0x10400000L, 0x00001000L, 0x00001008L, |
| 225 | 0x00000000L, 0x00400008L, 0x10401000L, 0x10001000L, 0x10400008L, |
| 226 | 0x10401008L, 0x00400000L, 0x10400008L, 0x00001008L, 0x00400000L, |
| 227 | 0x10000008L, 0x00401000L, 0x10001000L, 0x00000008L, 0x10400000L, |
| 228 | 0x10001008L, 0x00000000L, 0x00001000L, 0x00400008L, 0x00000000L, |
| 229 | 0x10400008L, 0x10401000L, 0x00001000L, 0x10000000L, 0x10401008L, |
| 230 | 0x00401008L, 0x00400000L, 0x10401008L, 0x00000008L, 0x10001000L, |
| 231 | 0x00401008L, 0x00400008L, 0x00401000L, 0x10400000L, 0x10001008L, |
| 232 | 0x00001008L, 0x10000000L, 0x10000008L, 0x10401000L, }, |
| 233 | {/* nibble 4 */ |
| 234 | 0x08000000L, 0x00010000L, 0x00000400L, 0x08010420L, 0x08010020L, |
| 235 | 0x08000400L, 0x00010420L, 0x08010000L, 0x00010000L, 0x00000020L, |
| 236 | 0x08000020L, 0x00010400L, 0x08000420L, 0x08010020L, 0x08010400L, |
| 237 | 0x00000000L, 0x00010400L, 0x08000000L, 0x00010020L, 0x00000420L, |
| 238 | 0x08000400L, 0x00010420L, 0x00000000L, 0x08000020L, 0x00000020L, |
| 239 | 0x08000420L, 0x08010420L, 0x00010020L, 0x08010000L, 0x00000400L, |
| 240 | 0x00000420L, 0x08010400L, 0x08010400L, 0x08000420L, 0x00010020L, |
| 241 | 0x08010000L, 0x00010000L, 0x00000020L, 0x08000020L, 0x08000400L, |
| 242 | 0x08000000L, 0x00010400L, 0x08010420L, 0x00000000L, 0x00010420L, |
| 243 | 0x08000000L, 0x00000400L, 0x00010020L, 0x08000420L, 0x00000400L, |
| 244 | 0x00000000L, 0x08010420L, 0x08010020L, 0x08010400L, 0x00000420L, |
| 245 | 0x00010000L, 0x00010400L, 0x08010020L, 0x08000400L, 0x00000420L, |
| 246 | 0x00000020L, 0x00010420L, 0x08010000L, 0x08000020L, }, |
| 247 | {/* nibble 5 */ |
| 248 | 0x80000040L, 0x00200040L, 0x00000000L, 0x80202000L, 0x00200040L, |
| 249 | 0x00002000L, 0x80002040L, 0x00200000L, 0x00002040L, 0x80202040L, |
| 250 | 0x00202000L, 0x80000000L, 0x80002000L, 0x80000040L, 0x80200000L, |
| 251 | 0x00202040L, 0x00200000L, 0x80002040L, 0x80200040L, 0x00000000L, |
| 252 | 0x00002000L, 0x00000040L, 0x80202000L, 0x80200040L, 0x80202040L, |
| 253 | 0x80200000L, 0x80000000L, 0x00002040L, 0x00000040L, 0x00202000L, |
| 254 | 0x00202040L, 0x80002000L, 0x00002040L, 0x80000000L, 0x80002000L, |
| 255 | 0x00202040L, 0x80202000L, 0x00200040L, 0x00000000L, 0x80002000L, |
| 256 | 0x80000000L, 0x00002000L, 0x80200040L, 0x00200000L, 0x00200040L, |
| 257 | 0x80202040L, 0x00202000L, 0x00000040L, 0x80202040L, 0x00202000L, |
| 258 | 0x00200000L, 0x80002040L, 0x80000040L, 0x80200000L, 0x00202040L, |
| 259 | 0x00000000L, 0x00002000L, 0x80000040L, 0x80002040L, 0x80202000L, |
| 260 | 0x80200000L, 0x00002040L, 0x00000040L, 0x80200040L, }, |
| 261 | {/* nibble 6 */ |
| 262 | 0x00004000L, 0x00000200L, 0x01000200L, 0x01000004L, 0x01004204L, |
| 263 | 0x00004004L, 0x00004200L, 0x00000000L, 0x01000000L, 0x01000204L, |
| 264 | 0x00000204L, 0x01004000L, 0x00000004L, 0x01004200L, 0x01004000L, |
| 265 | 0x00000204L, 0x01000204L, 0x00004000L, 0x00004004L, 0x01004204L, |
| 266 | 0x00000000L, 0x01000200L, 0x01000004L, 0x00004200L, 0x01004004L, |
| 267 | 0x00004204L, 0x01004200L, 0x00000004L, 0x00004204L, 0x01004004L, |
| 268 | 0x00000200L, 0x01000000L, 0x00004204L, 0x01004000L, 0x01004004L, |
| 269 | 0x00000204L, 0x00004000L, 0x00000200L, 0x01000000L, 0x01004004L, |
| 270 | 0x01000204L, 0x00004204L, 0x00004200L, 0x00000000L, 0x00000200L, |
| 271 | 0x01000004L, 0x00000004L, 0x01000200L, 0x00000000L, 0x01000204L, |
| 272 | 0x01000200L, 0x00004200L, 0x00000204L, 0x00004000L, 0x01004204L, |
| 273 | 0x01000000L, 0x01004200L, 0x00000004L, 0x00004004L, 0x01004204L, |
| 274 | 0x01000004L, 0x01004200L, 0x01004000L, 0x00004004L, }, |
| 275 | {/* nibble 7 */ |
| 276 | 0x20800080L, 0x20820000L, 0x00020080L, 0x00000000L, 0x20020000L, |
| 277 | 0x00800080L, 0x20800000L, 0x20820080L, 0x00000080L, 0x20000000L, |
| 278 | 0x00820000L, 0x00020080L, 0x00820080L, 0x20020080L, 0x20000080L, |
| 279 | 0x20800000L, 0x00020000L, 0x00820080L, 0x00800080L, 0x20020000L, |
| 280 | 0x20820080L, 0x20000080L, 0x00000000L, 0x00820000L, 0x20000000L, |
| 281 | 0x00800000L, 0x20020080L, 0x20800080L, 0x00800000L, 0x00020000L, |
| 282 | 0x20820000L, 0x00000080L, 0x00800000L, 0x00020000L, 0x20000080L, |
| 283 | 0x20820080L, 0x00020080L, 0x20000000L, 0x00000000L, 0x00820000L, |
| 284 | 0x20800080L, 0x20020080L, 0x20020000L, 0x00800080L, 0x20820000L, |
| 285 | 0x00000080L, 0x00800080L, 0x20020000L, 0x20820080L, 0x00800000L, |
| 286 | 0x20800000L, 0x20000080L, 0x00820000L, 0x00020080L, 0x20020080L, |
| 287 | 0x20800000L, 0x00000080L, 0x20820000L, 0x00820080L, 0x00000000L, |
| 288 | 0x20000000L, 0x20800080L, 0x00020000L, 0x00820080L, }}; |
| 289 | |
| 290 | #define HPERM_OP(a, t, n, m) \ |
| 291 | ((t) = ((((a) << (16 - (n))) ^ (a)) & (m)), \ |
| 292 | (a) = (a) ^ (t) ^ (t >> (16 - (n)))) |
| 293 | |
| 294 | void DES_set_key(const DES_cblock *key, DES_key_schedule *schedule) { |
| 295 | static const int shifts2[16] = {0, 0, 1, 1, 1, 1, 1, 1, |
| 296 | 0, 1, 1, 1, 1, 1, 1, 0}; |
| 297 | uint32_t c, d, t, s, t2; |
| 298 | const uint8_t *in; |
| 299 | uint32_t *k; |
| 300 | int i; |
| 301 | |
| 302 | k = &schedule->ks->deslong[0]; |
| 303 | in = key->bytes; |
| 304 | |
| 305 | c2l(in, c); |
| 306 | c2l(in, d); |
| 307 | |
| 308 | /* do PC1 in 47 simple operations :-) |
| 309 | * Thanks to John Fletcher (john_fletcher@lccmail.ocf.llnl.gov) |
| 310 | * for the inspiration. :-) */ |
| 311 | PERM_OP(d, c, t, 4, 0x0f0f0f0fL); |
| 312 | HPERM_OP(c, t, -2, 0xcccc0000L); |
| 313 | HPERM_OP(d, t, -2, 0xcccc0000L); |
| 314 | PERM_OP(d, c, t, 1, 0x55555555L); |
| 315 | PERM_OP(c, d, t, 8, 0x00ff00ffL); |
| 316 | PERM_OP(d, c, t, 1, 0x55555555L); |
| 317 | d = (((d & 0x000000ffL) << 16L) | (d & 0x0000ff00L) | |
| 318 | ((d & 0x00ff0000L) >> 16L) | ((c & 0xf0000000L) >> 4L)); |
| 319 | c &= 0x0fffffffL; |
| 320 | |
| 321 | for (i = 0; i < ITERATIONS; i++) { |
| 322 | if (shifts2[i]) { |
| 323 | c = ((c >> 2L) | (c << 26L)); |
| 324 | d = ((d >> 2L) | (d << 26L)); |
| 325 | } else { |
| 326 | c = ((c >> 1L) | (c << 27L)); |
| 327 | d = ((d >> 1L) | (d << 27L)); |
| 328 | } |
| 329 | c &= 0x0fffffffL; |
| 330 | d &= 0x0fffffffL; |
| 331 | /* could be a few less shifts but I am to lazy at this |
| 332 | * point in time to investigate */ |
| 333 | s = des_skb[0][(c) & 0x3f] | |
| 334 | des_skb[1][((c >> 6L) & 0x03) | ((c >> 7L) & 0x3c)] | |
| 335 | des_skb[2][((c >> 13L) & 0x0f) | ((c >> 14L) & 0x30)] | |
| 336 | des_skb[3][((c >> 20L) & 0x01) | ((c >> 21L) & 0x06) | |
| 337 | ((c >> 22L) & 0x38)]; |
| 338 | t = des_skb[4][(d) & 0x3f] | |
| 339 | des_skb[5][((d >> 7L) & 0x03) | ((d >> 8L) & 0x3c)] | |
| 340 | des_skb[6][(d >> 15L) & 0x3f] | |
| 341 | des_skb[7][((d >> 21L) & 0x0f) | ((d >> 22L) & 0x30)]; |
| 342 | |
| 343 | /* table contained 0213 4657 */ |
| 344 | t2 = ((t << 16L) | (s & 0x0000ffffL)) & 0xffffffffL; |
| 345 | *(k++) = ROTATE(t2, 30) & 0xffffffffL; |
| 346 | |
| 347 | t2 = ((s >> 16L) | (t & 0xffff0000L)); |
| 348 | *(k++) = ROTATE(t2, 26) & 0xffffffffL; |
| 349 | } |
| 350 | } |
| 351 | |
| 352 | static void DES_encrypt1(uint32_t *data, const DES_key_schedule *ks, int enc) { |
| 353 | uint32_t l, r, t, u; |
| 354 | const uint32_t *s; |
| 355 | |
| 356 | r = data[0]; |
| 357 | l = data[1]; |
| 358 | |
| 359 | IP(r, l); |
| 360 | /* Things have been modified so that the initial rotate is done outside |
| 361 | * the loop. This required the DES_SPtrans values in sp.h to be |
| 362 | * rotated 1 bit to the right. One perl script later and things have a |
| 363 | * 5% speed up on a sparc2. Thanks to Richard Outerbridge |
| 364 | * <71755.204@CompuServe.COM> for pointing this out. */ |
| 365 | /* clear the top bits on machines with 8byte longs */ |
| 366 | /* shift left by 2 */ |
| 367 | r = ROTATE(r, 29) & 0xffffffffL; |
| 368 | l = ROTATE(l, 29) & 0xffffffffL; |
| 369 | |
| 370 | s = ks->ks->deslong; |
| 371 | /* I don't know if it is worth the effort of loop unrolling the |
| 372 | * inner loop */ |
| 373 | if (enc) { |
| 374 | D_ENCRYPT(l, r, 0); /* 1 */ |
| 375 | D_ENCRYPT(r, l, 2); /* 2 */ |
| 376 | D_ENCRYPT(l, r, 4); /* 3 */ |
| 377 | D_ENCRYPT(r, l, 6); /* 4 */ |
| 378 | D_ENCRYPT(l, r, 8); /* 5 */ |
| 379 | D_ENCRYPT(r, l, 10); /* 6 */ |
| 380 | D_ENCRYPT(l, r, 12); /* 7 */ |
| 381 | D_ENCRYPT(r, l, 14); /* 8 */ |
| 382 | D_ENCRYPT(l, r, 16); /* 9 */ |
| 383 | D_ENCRYPT(r, l, 18); /* 10 */ |
| 384 | D_ENCRYPT(l, r, 20); /* 11 */ |
| 385 | D_ENCRYPT(r, l, 22); /* 12 */ |
| 386 | D_ENCRYPT(l, r, 24); /* 13 */ |
| 387 | D_ENCRYPT(r, l, 26); /* 14 */ |
| 388 | D_ENCRYPT(l, r, 28); /* 15 */ |
| 389 | D_ENCRYPT(r, l, 30); /* 16 */ |
| 390 | } else { |
| 391 | D_ENCRYPT(l, r, 30); /* 16 */ |
| 392 | D_ENCRYPT(r, l, 28); /* 15 */ |
| 393 | D_ENCRYPT(l, r, 26); /* 14 */ |
| 394 | D_ENCRYPT(r, l, 24); /* 13 */ |
| 395 | D_ENCRYPT(l, r, 22); /* 12 */ |
| 396 | D_ENCRYPT(r, l, 20); /* 11 */ |
| 397 | D_ENCRYPT(l, r, 18); /* 10 */ |
| 398 | D_ENCRYPT(r, l, 16); /* 9 */ |
| 399 | D_ENCRYPT(l, r, 14); /* 8 */ |
| 400 | D_ENCRYPT(r, l, 12); /* 7 */ |
| 401 | D_ENCRYPT(l, r, 10); /* 6 */ |
| 402 | D_ENCRYPT(r, l, 8); /* 5 */ |
| 403 | D_ENCRYPT(l, r, 6); /* 4 */ |
| 404 | D_ENCRYPT(r, l, 4); /* 3 */ |
| 405 | D_ENCRYPT(l, r, 2); /* 2 */ |
| 406 | D_ENCRYPT(r, l, 0); /* 1 */ |
| 407 | } |
| 408 | |
| 409 | /* rotate and clear the top bits on machines with 8byte longs */ |
| 410 | l = ROTATE(l, 3) & 0xffffffffL; |
| 411 | r = ROTATE(r, 3) & 0xffffffffL; |
| 412 | |
| 413 | FP(r, l); |
| 414 | data[0] = l; |
| 415 | data[1] = r; |
| 416 | } |
| 417 | |
| 418 | static void DES_encrypt2(uint32_t *data, const DES_key_schedule *ks, int enc) { |
| 419 | uint32_t l, r, t, u; |
| 420 | const uint32_t *s; |
| 421 | |
| 422 | r = data[0]; |
| 423 | l = data[1]; |
| 424 | |
| 425 | /* Things have been modified so that the initial rotate is done outside the |
| 426 | * loop. This required the DES_SPtrans values in sp.h to be rotated 1 bit to |
| 427 | * the right. One perl script later and things have a 5% speed up on a |
| 428 | * sparc2. Thanks to Richard Outerbridge <71755.204@CompuServe.COM> for |
| 429 | * pointing this out. */ |
| 430 | /* clear the top bits on machines with 8byte longs */ |
| 431 | r = ROTATE(r, 29) & 0xffffffffL; |
| 432 | l = ROTATE(l, 29) & 0xffffffffL; |
| 433 | |
| 434 | s = ks->ks->deslong; |
| 435 | /* I don't know if it is worth the effort of loop unrolling the |
| 436 | * inner loop */ |
| 437 | if (enc) { |
| 438 | D_ENCRYPT(l, r, 0); /* 1 */ |
| 439 | D_ENCRYPT(r, l, 2); /* 2 */ |
| 440 | D_ENCRYPT(l, r, 4); /* 3 */ |
| 441 | D_ENCRYPT(r, l, 6); /* 4 */ |
| 442 | D_ENCRYPT(l, r, 8); /* 5 */ |
| 443 | D_ENCRYPT(r, l, 10); /* 6 */ |
| 444 | D_ENCRYPT(l, r, 12); /* 7 */ |
| 445 | D_ENCRYPT(r, l, 14); /* 8 */ |
| 446 | D_ENCRYPT(l, r, 16); /* 9 */ |
| 447 | D_ENCRYPT(r, l, 18); /* 10 */ |
| 448 | D_ENCRYPT(l, r, 20); /* 11 */ |
| 449 | D_ENCRYPT(r, l, 22); /* 12 */ |
| 450 | D_ENCRYPT(l, r, 24); /* 13 */ |
| 451 | D_ENCRYPT(r, l, 26); /* 14 */ |
| 452 | D_ENCRYPT(l, r, 28); /* 15 */ |
| 453 | D_ENCRYPT(r, l, 30); /* 16 */ |
| 454 | } else { |
| 455 | D_ENCRYPT(l, r, 30); /* 16 */ |
| 456 | D_ENCRYPT(r, l, 28); /* 15 */ |
| 457 | D_ENCRYPT(l, r, 26); /* 14 */ |
| 458 | D_ENCRYPT(r, l, 24); /* 13 */ |
| 459 | D_ENCRYPT(l, r, 22); /* 12 */ |
| 460 | D_ENCRYPT(r, l, 20); /* 11 */ |
| 461 | D_ENCRYPT(l, r, 18); /* 10 */ |
| 462 | D_ENCRYPT(r, l, 16); /* 9 */ |
| 463 | D_ENCRYPT(l, r, 14); /* 8 */ |
| 464 | D_ENCRYPT(r, l, 12); /* 7 */ |
| 465 | D_ENCRYPT(l, r, 10); /* 6 */ |
| 466 | D_ENCRYPT(r, l, 8); /* 5 */ |
| 467 | D_ENCRYPT(l, r, 6); /* 4 */ |
| 468 | D_ENCRYPT(r, l, 4); /* 3 */ |
| 469 | D_ENCRYPT(l, r, 2); /* 2 */ |
| 470 | D_ENCRYPT(r, l, 0); /* 1 */ |
| 471 | } |
| 472 | /* rotate and clear the top bits on machines with 8byte longs */ |
| 473 | data[0] = ROTATE(l, 3) & 0xffffffffL; |
| 474 | data[1] = ROTATE(r, 3) & 0xffffffffL; |
| 475 | } |
| 476 | |
| 477 | static void DES_encrypt3(uint32_t *data, const DES_key_schedule *ks1, |
| 478 | const DES_key_schedule *ks2, |
| 479 | const DES_key_schedule *ks3) { |
| 480 | uint32_t l, r; |
| 481 | |
| 482 | l = data[0]; |
| 483 | r = data[1]; |
| 484 | IP(l, r); |
| 485 | data[0] = l; |
| 486 | data[1] = r; |
| 487 | DES_encrypt2((uint32_t *)data, ks1, DES_ENCRYPT); |
| 488 | DES_encrypt2((uint32_t *)data, ks2, DES_DECRYPT); |
| 489 | DES_encrypt2((uint32_t *)data, ks3, DES_ENCRYPT); |
| 490 | l = data[0]; |
| 491 | r = data[1]; |
| 492 | FP(r, l); |
| 493 | data[0] = l; |
| 494 | data[1] = r; |
| 495 | } |
| 496 | |
| 497 | static void DES_decrypt3(uint32_t *data, const DES_key_schedule *ks1, |
| 498 | const DES_key_schedule *ks2, |
| 499 | const DES_key_schedule *ks3) { |
| 500 | uint32_t l, r; |
| 501 | |
| 502 | l = data[0]; |
| 503 | r = data[1]; |
| 504 | IP(l, r); |
| 505 | data[0] = l; |
| 506 | data[1] = r; |
| 507 | DES_encrypt2((uint32_t *)data, ks3, DES_DECRYPT); |
| 508 | DES_encrypt2((uint32_t *)data, ks2, DES_ENCRYPT); |
| 509 | DES_encrypt2((uint32_t *)data, ks1, DES_DECRYPT); |
| 510 | l = data[0]; |
| 511 | r = data[1]; |
| 512 | FP(r, l); |
| 513 | data[0] = l; |
| 514 | data[1] = r; |
| 515 | } |
| 516 | |
| 517 | void DES_ecb_encrypt(const DES_cblock *in_block, DES_cblock *out_block, |
| 518 | const DES_key_schedule *schedule, int is_encrypt) { |
| 519 | uint32_t l; |
| 520 | uint32_t ll[2]; |
| 521 | const uint8_t *in = in_block->bytes; |
| 522 | uint8_t *out = out_block->bytes; |
| 523 | |
| 524 | c2l(in, l); |
| 525 | ll[0] = l; |
| 526 | c2l(in, l); |
| 527 | ll[1] = l; |
| 528 | DES_encrypt1(ll, schedule, is_encrypt); |
| 529 | l = ll[0]; |
| 530 | l2c(l, out); |
| 531 | l = ll[1]; |
| 532 | l2c(l, out); |
| 533 | ll[0] = ll[1] = 0; |
| 534 | } |
| 535 | |
| 536 | void DES_ncbc_encrypt(const uint8_t *in, uint8_t *out, size_t len, |
| 537 | const DES_key_schedule *schedule, DES_cblock *ivec, |
| 538 | int enc) { |
| 539 | uint32_t tin0, tin1; |
| 540 | uint32_t tout0, tout1, xor0, xor1; |
| 541 | uint32_t tin[2]; |
| 542 | unsigned char *iv; |
| 543 | |
| 544 | iv = ivec->bytes; |
| 545 | |
| 546 | if (enc) { |
| 547 | c2l(iv, tout0); |
| 548 | c2l(iv, tout1); |
| 549 | for (; len >= 8; len -= 8) { |
| 550 | c2l(in, tin0); |
| 551 | c2l(in, tin1); |
| 552 | tin0 ^= tout0; |
| 553 | tin[0] = tin0; |
| 554 | tin1 ^= tout1; |
| 555 | tin[1] = tin1; |
| 556 | DES_encrypt1((uint32_t *)tin, schedule, DES_ENCRYPT); |
| 557 | tout0 = tin[0]; |
| 558 | l2c(tout0, out); |
| 559 | tout1 = tin[1]; |
| 560 | l2c(tout1, out); |
| 561 | } |
| 562 | if (len != 0) { |
| 563 | c2ln(in, tin0, tin1, len); |
| 564 | tin0 ^= tout0; |
| 565 | tin[0] = tin0; |
| 566 | tin1 ^= tout1; |
| 567 | tin[1] = tin1; |
| 568 | DES_encrypt1((uint32_t *)tin, schedule, DES_ENCRYPT); |
| 569 | tout0 = tin[0]; |
| 570 | l2c(tout0, out); |
| 571 | tout1 = tin[1]; |
| 572 | l2c(tout1, out); |
| 573 | } |
| 574 | iv = ivec->bytes; |
| 575 | l2c(tout0, iv); |
| 576 | l2c(tout1, iv); |
| 577 | } else { |
| 578 | c2l(iv, xor0); |
| 579 | c2l(iv, xor1); |
| 580 | for (; len >= 8; len -= 8) { |
| 581 | c2l(in, tin0); |
| 582 | tin[0] = tin0; |
| 583 | c2l(in, tin1); |
| 584 | tin[1] = tin1; |
| 585 | DES_encrypt1((uint32_t *)tin, schedule, DES_DECRYPT); |
| 586 | tout0 = tin[0] ^ xor0; |
| 587 | tout1 = tin[1] ^ xor1; |
| 588 | l2c(tout0, out); |
| 589 | l2c(tout1, out); |
| 590 | xor0 = tin0; |
| 591 | xor1 = tin1; |
| 592 | } |
| 593 | if (len != 0) { |
| 594 | c2l(in, tin0); |
| 595 | tin[0] = tin0; |
| 596 | c2l(in, tin1); |
| 597 | tin[1] = tin1; |
| 598 | DES_encrypt1((uint32_t *)tin, schedule, DES_DECRYPT); |
| 599 | tout0 = tin[0] ^ xor0; |
| 600 | tout1 = tin[1] ^ xor1; |
| 601 | l2cn(tout0, tout1, out, len); |
| 602 | xor0 = tin0; |
| 603 | xor1 = tin1; |
| 604 | } |
| 605 | iv = ivec->bytes; |
| 606 | l2c(xor0, iv); |
| 607 | l2c(xor1, iv); |
| 608 | } |
| 609 | tin[0] = tin[1] = 0; |
| 610 | } |
| 611 | |
| 612 | void DES_ede3_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t len, |
| 613 | const DES_key_schedule *ks1, |
| 614 | const DES_key_schedule *ks2, |
| 615 | const DES_key_schedule *ks3, DES_cblock *ivec, |
| 616 | int enc) { |
| 617 | uint32_t tin0, tin1; |
| 618 | uint32_t tout0, tout1, xor0, xor1; |
| 619 | uint32_t tin[2]; |
| 620 | uint8_t *iv; |
| 621 | |
| 622 | iv = ivec->bytes; |
| 623 | |
| 624 | if (enc) { |
| 625 | c2l(iv, tout0); |
| 626 | c2l(iv, tout1); |
| 627 | for (; len >= 8; len -= 8) { |
| 628 | c2l(in, tin0); |
| 629 | c2l(in, tin1); |
| 630 | tin0 ^= tout0; |
| 631 | tin1 ^= tout1; |
| 632 | |
| 633 | tin[0] = tin0; |
| 634 | tin[1] = tin1; |
| 635 | DES_encrypt3((uint32_t *)tin, ks1, ks2, ks3); |
| 636 | tout0 = tin[0]; |
| 637 | tout1 = tin[1]; |
| 638 | |
| 639 | l2c(tout0, out); |
| 640 | l2c(tout1, out); |
| 641 | } |
| 642 | if (len != 0) { |
| 643 | c2ln(in, tin0, tin1, len); |
| 644 | tin0 ^= tout0; |
| 645 | tin1 ^= tout1; |
| 646 | |
| 647 | tin[0] = tin0; |
| 648 | tin[1] = tin1; |
| 649 | DES_encrypt3((uint32_t *)tin, ks1, ks2, ks3); |
| 650 | tout0 = tin[0]; |
| 651 | tout1 = tin[1]; |
| 652 | |
| 653 | l2c(tout0, out); |
| 654 | l2c(tout1, out); |
| 655 | } |
| 656 | iv = ivec->bytes; |
| 657 | l2c(tout0, iv); |
| 658 | l2c(tout1, iv); |
| 659 | } else { |
| 660 | uint32_t t0, t1; |
| 661 | |
| 662 | c2l(iv, xor0); |
| 663 | c2l(iv, xor1); |
| 664 | for (; len >= 8; len -= 8) { |
| 665 | c2l(in, tin0); |
| 666 | c2l(in, tin1); |
| 667 | |
| 668 | t0 = tin0; |
| 669 | t1 = tin1; |
| 670 | |
| 671 | tin[0] = tin0; |
| 672 | tin[1] = tin1; |
| 673 | DES_decrypt3((uint32_t *)tin, ks1, ks2, ks3); |
| 674 | tout0 = tin[0]; |
| 675 | tout1 = tin[1]; |
| 676 | |
| 677 | tout0 ^= xor0; |
| 678 | tout1 ^= xor1; |
| 679 | l2c(tout0, out); |
| 680 | l2c(tout1, out); |
| 681 | xor0 = t0; |
| 682 | xor1 = t1; |
| 683 | } |
| 684 | if (len != 0) { |
| 685 | c2l(in, tin0); |
| 686 | c2l(in, tin1); |
| 687 | |
| 688 | t0 = tin0; |
| 689 | t1 = tin1; |
| 690 | |
| 691 | tin[0] = tin0; |
| 692 | tin[1] = tin1; |
| 693 | DES_decrypt3((uint32_t *)tin, ks1, ks2, ks3); |
| 694 | tout0 = tin[0]; |
| 695 | tout1 = tin[1]; |
| 696 | |
| 697 | tout0 ^= xor0; |
| 698 | tout1 ^= xor1; |
| 699 | l2cn(tout0, tout1, out, len); |
| 700 | xor0 = t0; |
| 701 | xor1 = t1; |
| 702 | } |
| 703 | |
| 704 | iv = ivec->bytes; |
| 705 | l2c(xor0, iv); |
| 706 | l2c(xor1, iv); |
| 707 | } |
| 708 | |
| 709 | tin[0] = tin[1] = 0; |
| 710 | } |