[331] | 1 | /*
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| 2 | * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the OpenSSL license (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #include <openssl/crypto.h>
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| 11 | #include "des_locl.h"
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| 12 | #include "spr.h"
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| 13 |
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| 14 | void DES_encrypt1(DES_LONG *data, DES_key_schedule *ks, int enc)
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| 15 | {
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| 16 | register DES_LONG l, r, t, u;
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| 17 | register DES_LONG *s;
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| 18 |
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| 19 | r = data[0];
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| 20 | l = data[1];
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| 21 |
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| 22 | IP(r, l);
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| 23 | /*
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| 24 | * Things have been modified so that the initial rotate is done outside
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| 25 | * the loop. This required the DES_SPtrans values in sp.h to be rotated
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| 26 | * 1 bit to the right. One perl script later and things have a 5% speed
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| 27 | * up on a sparc2. Thanks to Richard Outerbridge
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| 28 | * <71755.204@CompuServe.COM> for pointing this out.
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| 29 | */
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| 30 | /* clear the top bits on machines with 8byte longs */
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| 31 | /* shift left by 2 */
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| 32 | r = ROTATE(r, 29) & 0xffffffffL;
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| 33 | l = ROTATE(l, 29) & 0xffffffffL;
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| 34 |
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| 35 | s = ks->ks->deslong;
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| 36 | /*
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| 37 | * I don't know if it is worth the effort of loop unrolling the inner
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| 38 | * loop
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| 39 | */
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| 40 | if (enc) {
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| 41 | D_ENCRYPT(l, r, 0); /* 1 */
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| 42 | D_ENCRYPT(r, l, 2); /* 2 */
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| 43 | D_ENCRYPT(l, r, 4); /* 3 */
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| 44 | D_ENCRYPT(r, l, 6); /* 4 */
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| 45 | D_ENCRYPT(l, r, 8); /* 5 */
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| 46 | D_ENCRYPT(r, l, 10); /* 6 */
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| 47 | D_ENCRYPT(l, r, 12); /* 7 */
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| 48 | D_ENCRYPT(r, l, 14); /* 8 */
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| 49 | D_ENCRYPT(l, r, 16); /* 9 */
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| 50 | D_ENCRYPT(r, l, 18); /* 10 */
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| 51 | D_ENCRYPT(l, r, 20); /* 11 */
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| 52 | D_ENCRYPT(r, l, 22); /* 12 */
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| 53 | D_ENCRYPT(l, r, 24); /* 13 */
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| 54 | D_ENCRYPT(r, l, 26); /* 14 */
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| 55 | D_ENCRYPT(l, r, 28); /* 15 */
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| 56 | D_ENCRYPT(r, l, 30); /* 16 */
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| 57 | } else {
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| 58 | D_ENCRYPT(l, r, 30); /* 16 */
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| 59 | D_ENCRYPT(r, l, 28); /* 15 */
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| 60 | D_ENCRYPT(l, r, 26); /* 14 */
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| 61 | D_ENCRYPT(r, l, 24); /* 13 */
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| 62 | D_ENCRYPT(l, r, 22); /* 12 */
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| 63 | D_ENCRYPT(r, l, 20); /* 11 */
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| 64 | D_ENCRYPT(l, r, 18); /* 10 */
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| 65 | D_ENCRYPT(r, l, 16); /* 9 */
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| 66 | D_ENCRYPT(l, r, 14); /* 8 */
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| 67 | D_ENCRYPT(r, l, 12); /* 7 */
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| 68 | D_ENCRYPT(l, r, 10); /* 6 */
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| 69 | D_ENCRYPT(r, l, 8); /* 5 */
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| 70 | D_ENCRYPT(l, r, 6); /* 4 */
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| 71 | D_ENCRYPT(r, l, 4); /* 3 */
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| 72 | D_ENCRYPT(l, r, 2); /* 2 */
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| 73 | D_ENCRYPT(r, l, 0); /* 1 */
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| 74 | }
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| 75 |
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| 76 | /* rotate and clear the top bits on machines with 8byte longs */
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| 77 | l = ROTATE(l, 3) & 0xffffffffL;
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| 78 | r = ROTATE(r, 3) & 0xffffffffL;
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| 79 |
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| 80 | FP(r, l);
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| 81 | data[0] = l;
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| 82 | data[1] = r;
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| 83 | l = r = t = u = 0;
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| 84 | }
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| 85 |
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| 86 | void DES_encrypt2(DES_LONG *data, DES_key_schedule *ks, int enc)
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| 87 | {
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| 88 | register DES_LONG l, r, t, u;
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| 89 | register DES_LONG *s;
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| 90 |
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| 91 | r = data[0];
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| 92 | l = data[1];
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| 93 |
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| 94 | /*
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| 95 | * Things have been modified so that the initial rotate is done outside
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| 96 | * the loop. This required the DES_SPtrans values in sp.h to be rotated
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| 97 | * 1 bit to the right. One perl script later and things have a 5% speed
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| 98 | * up on a sparc2. Thanks to Richard Outerbridge
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| 99 | * <71755.204@CompuServe.COM> for pointing this out.
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| 100 | */
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| 101 | /* clear the top bits on machines with 8byte longs */
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| 102 | r = ROTATE(r, 29) & 0xffffffffL;
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| 103 | l = ROTATE(l, 29) & 0xffffffffL;
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| 104 |
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| 105 | s = ks->ks->deslong;
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| 106 | /*
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| 107 | * I don't know if it is worth the effort of loop unrolling the inner
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| 108 | * loop
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| 109 | */
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| 110 | if (enc) {
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| 111 | D_ENCRYPT(l, r, 0); /* 1 */
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| 112 | D_ENCRYPT(r, l, 2); /* 2 */
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| 113 | D_ENCRYPT(l, r, 4); /* 3 */
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| 114 | D_ENCRYPT(r, l, 6); /* 4 */
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| 115 | D_ENCRYPT(l, r, 8); /* 5 */
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| 116 | D_ENCRYPT(r, l, 10); /* 6 */
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| 117 | D_ENCRYPT(l, r, 12); /* 7 */
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| 118 | D_ENCRYPT(r, l, 14); /* 8 */
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| 119 | D_ENCRYPT(l, r, 16); /* 9 */
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| 120 | D_ENCRYPT(r, l, 18); /* 10 */
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| 121 | D_ENCRYPT(l, r, 20); /* 11 */
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| 122 | D_ENCRYPT(r, l, 22); /* 12 */
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| 123 | D_ENCRYPT(l, r, 24); /* 13 */
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| 124 | D_ENCRYPT(r, l, 26); /* 14 */
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| 125 | D_ENCRYPT(l, r, 28); /* 15 */
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| 126 | D_ENCRYPT(r, l, 30); /* 16 */
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| 127 | } else {
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| 128 | D_ENCRYPT(l, r, 30); /* 16 */
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| 129 | D_ENCRYPT(r, l, 28); /* 15 */
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| 130 | D_ENCRYPT(l, r, 26); /* 14 */
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| 131 | D_ENCRYPT(r, l, 24); /* 13 */
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| 132 | D_ENCRYPT(l, r, 22); /* 12 */
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| 133 | D_ENCRYPT(r, l, 20); /* 11 */
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| 134 | D_ENCRYPT(l, r, 18); /* 10 */
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| 135 | D_ENCRYPT(r, l, 16); /* 9 */
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| 136 | D_ENCRYPT(l, r, 14); /* 8 */
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| 137 | D_ENCRYPT(r, l, 12); /* 7 */
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| 138 | D_ENCRYPT(l, r, 10); /* 6 */
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| 139 | D_ENCRYPT(r, l, 8); /* 5 */
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| 140 | D_ENCRYPT(l, r, 6); /* 4 */
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| 141 | D_ENCRYPT(r, l, 4); /* 3 */
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| 142 | D_ENCRYPT(l, r, 2); /* 2 */
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| 143 | D_ENCRYPT(r, l, 0); /* 1 */
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| 144 | }
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| 145 | /* rotate and clear the top bits on machines with 8byte longs */
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| 146 | data[0] = ROTATE(l, 3) & 0xffffffffL;
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| 147 | data[1] = ROTATE(r, 3) & 0xffffffffL;
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| 148 | l = r = t = u = 0;
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| 149 | }
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| 150 |
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| 151 | void DES_encrypt3(DES_LONG *data, DES_key_schedule *ks1,
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| 152 | DES_key_schedule *ks2, DES_key_schedule *ks3)
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| 153 | {
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| 154 | register DES_LONG l, r;
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| 155 |
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| 156 | l = data[0];
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| 157 | r = data[1];
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| 158 | IP(l, r);
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| 159 | data[0] = l;
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| 160 | data[1] = r;
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| 161 | DES_encrypt2((DES_LONG *)data, ks1, DES_ENCRYPT);
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| 162 | DES_encrypt2((DES_LONG *)data, ks2, DES_DECRYPT);
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| 163 | DES_encrypt2((DES_LONG *)data, ks3, DES_ENCRYPT);
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| 164 | l = data[0];
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| 165 | r = data[1];
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| 166 | FP(r, l);
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| 167 | data[0] = l;
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| 168 | data[1] = r;
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| 169 | }
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| 170 |
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| 171 | void DES_decrypt3(DES_LONG *data, DES_key_schedule *ks1,
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| 172 | DES_key_schedule *ks2, DES_key_schedule *ks3)
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| 173 | {
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| 174 | register DES_LONG l, r;
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| 175 |
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| 176 | l = data[0];
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| 177 | r = data[1];
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| 178 | IP(l, r);
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| 179 | data[0] = l;
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| 180 | data[1] = r;
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| 181 | DES_encrypt2((DES_LONG *)data, ks3, DES_DECRYPT);
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| 182 | DES_encrypt2((DES_LONG *)data, ks2, DES_ENCRYPT);
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| 183 | DES_encrypt2((DES_LONG *)data, ks1, DES_DECRYPT);
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| 184 | l = data[0];
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| 185 | r = data[1];
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| 186 | FP(r, l);
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| 187 | data[0] = l;
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| 188 | data[1] = r;
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| 189 | }
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| 190 |
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| 191 | #ifndef DES_DEFAULT_OPTIONS
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| 192 |
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| 193 | # undef CBC_ENC_C__DONT_UPDATE_IV
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| 194 | # include "ncbc_enc.c" /* DES_ncbc_encrypt */
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| 195 |
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| 196 | void DES_ede3_cbc_encrypt(const unsigned char *input, unsigned char *output,
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| 197 | long length, DES_key_schedule *ks1,
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| 198 | DES_key_schedule *ks2, DES_key_schedule *ks3,
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| 199 | DES_cblock *ivec, int enc)
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| 200 | {
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| 201 | register DES_LONG tin0, tin1;
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| 202 | register DES_LONG tout0, tout1, xor0, xor1;
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| 203 | register const unsigned char *in;
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| 204 | unsigned char *out;
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| 205 | register long l = length;
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| 206 | DES_LONG tin[2];
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| 207 | unsigned char *iv;
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| 208 |
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| 209 | in = input;
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| 210 | out = output;
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| 211 | iv = &(*ivec)[0];
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| 212 |
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| 213 | if (enc) {
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| 214 | c2l(iv, tout0);
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| 215 | c2l(iv, tout1);
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| 216 | for (l -= 8; l >= 0; l -= 8) {
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| 217 | c2l(in, tin0);
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| 218 | c2l(in, tin1);
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| 219 | tin0 ^= tout0;
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| 220 | tin1 ^= tout1;
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| 221 |
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| 222 | tin[0] = tin0;
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| 223 | tin[1] = tin1;
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| 224 | DES_encrypt3((DES_LONG *)tin, ks1, ks2, ks3);
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| 225 | tout0 = tin[0];
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| 226 | tout1 = tin[1];
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| 227 |
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| 228 | l2c(tout0, out);
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| 229 | l2c(tout1, out);
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| 230 | }
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| 231 | if (l != -8) {
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| 232 | c2ln(in, tin0, tin1, l + 8);
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| 233 | tin0 ^= tout0;
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| 234 | tin1 ^= tout1;
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| 235 |
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| 236 | tin[0] = tin0;
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| 237 | tin[1] = tin1;
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| 238 | DES_encrypt3((DES_LONG *)tin, ks1, ks2, ks3);
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| 239 | tout0 = tin[0];
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| 240 | tout1 = tin[1];
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| 241 |
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| 242 | l2c(tout0, out);
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| 243 | l2c(tout1, out);
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| 244 | }
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| 245 | iv = &(*ivec)[0];
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| 246 | l2c(tout0, iv);
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| 247 | l2c(tout1, iv);
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| 248 | } else {
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| 249 | register DES_LONG t0, t1;
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| 250 |
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| 251 | c2l(iv, xor0);
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| 252 | c2l(iv, xor1);
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| 253 | for (l -= 8; l >= 0; l -= 8) {
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| 254 | c2l(in, tin0);
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| 255 | c2l(in, tin1);
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| 256 |
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| 257 | t0 = tin0;
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| 258 | t1 = tin1;
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| 259 |
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| 260 | tin[0] = tin0;
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| 261 | tin[1] = tin1;
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| 262 | DES_decrypt3((DES_LONG *)tin, ks1, ks2, ks3);
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| 263 | tout0 = tin[0];
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| 264 | tout1 = tin[1];
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| 265 |
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| 266 | tout0 ^= xor0;
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| 267 | tout1 ^= xor1;
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| 268 | l2c(tout0, out);
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| 269 | l2c(tout1, out);
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| 270 | xor0 = t0;
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| 271 | xor1 = t1;
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| 272 | }
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| 273 | if (l != -8) {
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| 274 | c2l(in, tin0);
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| 275 | c2l(in, tin1);
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| 276 |
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| 277 | t0 = tin0;
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| 278 | t1 = tin1;
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| 279 |
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| 280 | tin[0] = tin0;
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| 281 | tin[1] = tin1;
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| 282 | DES_decrypt3((DES_LONG *)tin, ks1, ks2, ks3);
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| 283 | tout0 = tin[0];
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| 284 | tout1 = tin[1];
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| 285 |
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| 286 | tout0 ^= xor0;
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| 287 | tout1 ^= xor1;
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| 288 | l2cn(tout0, tout1, out, l + 8);
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| 289 | xor0 = t0;
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| 290 | xor1 = t1;
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| 291 | }
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| 292 |
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| 293 | iv = &(*ivec)[0];
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| 294 | l2c(xor0, iv);
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| 295 | l2c(xor1, iv);
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| 296 | }
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| 297 | tin0 = tin1 = tout0 = tout1 = xor0 = xor1 = 0;
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| 298 | tin[0] = tin[1] = 0;
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| 299 | }
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| 300 |
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| 301 | #endif /* DES_DEFAULT_OPTIONS */
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