| 1 | /*
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| 2 | * Copyright (c) 2005 Kungliga Tekniska Högskolan
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| 3 | * (Royal Institute of Technology, Stockholm, Sweden).
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| 4 | * All rights reserved.
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| 5 | *
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| 6 | * Redistribution and use in source and binary forms, with or without
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| 7 | * modification, are permitted provided that the following conditions
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| 8 | * are met:
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| 9 | *
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| 10 | * 1. Redistributions of source code must retain the above copyright
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| 11 | * notice, this list of conditions and the following disclaimer.
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| 12 | *
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| 13 | * 2. Redistributions in binary form must reproduce the above copyright
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| 14 | * notice, this list of conditions and the following disclaimer in the
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| 15 | * documentation and/or other materials provided with the distribution.
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| 16 | *
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| 17 | * 3. Neither the name of the Institute nor the names of its contributors
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| 18 | * may be used to endorse or promote products derived from this software
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| 19 | * without specific prior written permission.
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| 20 | *
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| 21 | * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 31 | * SUCH DAMAGE.
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| 32 | */
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| 33 |
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| 34 | /**
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| 35 | * @page page_des DES - Data Encryption Standard crypto interface
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| 36 | *
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| 37 | * See the library functions here: @ref hcrypto_des
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| 38 | *
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| 39 | * DES was created by IBM, modififed by NSA and then adopted by NBS
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| 40 | * (now NIST) and published ad FIPS PUB 46 (updated by FIPS 46-1).
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| 41 | *
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| 42 | * Since the 19th May 2005 DES was withdrawn by NIST and should no
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| 43 | * longer be used. See @ref page_evp for replacement encryption
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| 44 | * algorithms and interfaces.
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| 45 | *
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| 46 | * Read more the iteresting history of DES on Wikipedia
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| 47 | * http://www.wikipedia.org/wiki/Data_Encryption_Standard .
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| 48 | *
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| 49 | * @section des_keygen DES key generation
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| 50 | *
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| 51 | * To generate a DES key safely you have to use the code-snippet
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| 52 | * below. This is because the DES_random_key() can fail with an
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| 53 | * abort() in case of and failure to start the random generator.
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| 54 | *
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| 55 | * There is a replacement function DES_new_random_key(), however that
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| 56 | * function does not exists in OpenSSL.
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| 57 | *
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| 58 | * @code
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| 59 | * DES_cblock key;
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| 60 | * do {
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| 61 | * if (RAND_rand(&key, sizeof(key)) != 1)
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| 62 | * goto failure;
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| 63 | * DES_set_odd_parity(key);
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| 64 | * } while (DES_is_weak_key(&key));
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| 65 | * @endcode
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| 66 | *
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| 67 | * @section des_impl DES implementation history
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| 68 | *
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| 69 | * There was no complete BSD licensed, fast, GPL compatible
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| 70 | * implementation of DES, so Love wrote the part that was missing,
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| 71 | * fast key schedule setup and adapted the interface to the orignal
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| 72 | * libdes.
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| 73 | *
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| 74 | * The document that got me started for real was "Efficient
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| 75 | * Implementation of the Data Encryption Standard" by Dag Arne Osvik.
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| 76 | * I never got to the PC1 transformation was working, instead I used
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| 77 | * table-lookup was used for all key schedule setup. The document was
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| 78 | * very useful since it de-mystified other implementations for me.
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| 79 | *
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| 80 | * The core DES function (SBOX + P transformation) is from Richard
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| 81 | * Outerbridge public domain DES implementation. My sanity is saved
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| 82 | * thanks to his work. Thank you Richard.
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| 83 | */
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| 84 |
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| 85 | #include <config.h>
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| 86 |
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| 87 | #define HC_DEPRECATED
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| 88 |
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| 89 | #include <stdio.h>
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| 90 | #include <stdlib.h>
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| 91 | #include <string.h>
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| 92 | #include <krb5-types.h>
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| 93 | #include <assert.h>
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| 94 |
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| 95 | #include <roken.h>
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| 96 |
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| 97 | #include "des.h"
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| 98 | #include "ui.h"
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| 99 |
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| 100 | static void desx(uint32_t [2], DES_key_schedule *, int);
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| 101 | static void IP(uint32_t [2]);
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| 102 | static void FP(uint32_t [2]);
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| 103 |
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| 104 | #include "des-tables.h"
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| 105 |
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| 106 | #define ROTATE_LEFT28(x,one) \
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| 107 | if (one) { \
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| 108 | x = ( ((x)<<(1)) & 0xffffffe) | ((x) >> 27); \
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| 109 | } else { \
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| 110 | x = ( ((x)<<(2)) & 0xffffffc) | ((x) >> 26); \
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| 111 | }
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| 112 |
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| 113 | /**
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| 114 | * Set the parity of the key block, used to generate a des key from a
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| 115 | * random key. See @ref des_keygen.
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| 116 | *
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| 117 | * @param key key to fixup the parity for.
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| 118 | * @ingroup hcrypto_des
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| 119 | */
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| 120 |
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| 121 | void
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| 122 | DES_set_odd_parity(DES_cblock *key)
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| 123 | {
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| 124 | unsigned int i;
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| 125 | for (i = 0; i < DES_CBLOCK_LEN; i++)
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| 126 | (*key)[i] = odd_parity[(*key)[i]];
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| 127 | }
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| 128 |
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| 129 | /**
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| 130 | * Check if the key have correct parity.
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| 131 | *
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| 132 | * @param key key to check the parity.
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| 133 | * @return 1 on success, 0 on failure.
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| 134 | * @ingroup hcrypto_des
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| 135 | */
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| 136 |
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| 137 | int HC_DEPRECATED
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| 138 | DES_check_key_parity(DES_cblock *key)
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| 139 | {
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| 140 | unsigned int i;
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| 141 |
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| 142 | for (i = 0; i < DES_CBLOCK_LEN; i++)
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| 143 | if ((*key)[i] != odd_parity[(*key)[i]])
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| 144 | return 0;
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| 145 | return 1;
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| 146 | }
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| 147 |
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| 148 | /*
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| 149 | *
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| 150 | */
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| 151 |
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| 152 | /* FIPS 74 */
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| 153 | static DES_cblock weak_keys[] = {
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| 154 | {0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01}, /* weak keys */
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| 155 | {0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE},
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| 156 | {0x1F,0x1F,0x1F,0x1F,0x0E,0x0E,0x0E,0x0E},
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| 157 | {0xE0,0xE0,0xE0,0xE0,0xF1,0xF1,0xF1,0xF1},
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| 158 | {0x01,0xFE,0x01,0xFE,0x01,0xFE,0x01,0xFE}, /* semi-weak keys */
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| 159 | {0xFE,0x01,0xFE,0x01,0xFE,0x01,0xFE,0x01},
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| 160 | {0x1F,0xE0,0x1F,0xE0,0x0E,0xF1,0x0E,0xF1},
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| 161 | {0xE0,0x1F,0xE0,0x1F,0xF1,0x0E,0xF1,0x0E},
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| 162 | {0x01,0xE0,0x01,0xE0,0x01,0xF1,0x01,0xF1},
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| 163 | {0xE0,0x01,0xE0,0x01,0xF1,0x01,0xF1,0x01},
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| 164 | {0x1F,0xFE,0x1F,0xFE,0x0E,0xFE,0x0E,0xFE},
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| 165 | {0xFE,0x1F,0xFE,0x1F,0xFE,0x0E,0xFE,0x0E},
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| 166 | {0x01,0x1F,0x01,0x1F,0x01,0x0E,0x01,0x0E},
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| 167 | {0x1F,0x01,0x1F,0x01,0x0E,0x01,0x0E,0x01},
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| 168 | {0xE0,0xFE,0xE0,0xFE,0xF1,0xFE,0xF1,0xFE},
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| 169 | {0xFE,0xE0,0xFE,0xE0,0xFE,0xF1,0xFE,0xF1}
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| 170 | };
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| 171 |
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| 172 | /**
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| 173 | * Checks if the key is any of the weaks keys that makes DES attacks
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| 174 | * trival.
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| 175 | *
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| 176 | * @param key key to check.
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| 177 | *
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| 178 | * @return 1 if the key is weak, 0 otherwise.
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| 179 | * @ingroup hcrypto_des
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| 180 | */
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| 181 |
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| 182 | int
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| 183 | DES_is_weak_key(DES_cblock *key)
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| 184 | {
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| 185 | int weak = 0;
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| 186 | int i;
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| 187 |
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| 188 | for (i = 0; i < sizeof(weak_keys)/sizeof(weak_keys[0]); i++)
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| 189 | weak ^= (ct_memcmp(weak_keys[i], key, DES_CBLOCK_LEN) == 0);
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| 190 |
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| 191 | return !!weak;
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| 192 | }
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| 193 |
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| 194 | /**
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| 195 | * Setup a des key schedule from a key. Deprecated function, use
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| 196 | * DES_set_key_unchecked() or DES_set_key_checked() instead.
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| 197 | *
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| 198 | * @param key a key to initialize the key schedule with.
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| 199 | * @param ks a key schedule to initialize.
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| 200 | *
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| 201 | * @return 0 on success
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| 202 | * @ingroup hcrypto_des
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| 203 | */
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| 204 |
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| 205 | int HC_DEPRECATED
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| 206 | DES_set_key(DES_cblock *key, DES_key_schedule *ks)
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| 207 | {
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| 208 | return DES_set_key_checked(key, ks);
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| 209 | }
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| 210 |
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| 211 | /**
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| 212 | * Setup a des key schedule from a key. The key is no longer needed
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| 213 | * after this transaction and can cleared.
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| 214 | *
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| 215 | * Does NOT check that the key is weak for or have wrong parity.
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| 216 | *
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| 217 | * @param key a key to initialize the key schedule with.
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| 218 | * @param ks a key schedule to initialize.
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| 219 | *
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| 220 | * @return 0 on success
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| 221 | * @ingroup hcrypto_des
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| 222 | */
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| 223 |
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| 224 | int
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| 225 | DES_set_key_unchecked(DES_cblock *key, DES_key_schedule *ks)
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| 226 | {
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| 227 | uint32_t t1, t2;
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| 228 | uint32_t c, d;
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| 229 | int shifts[16] = { 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1 };
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| 230 | uint32_t *k = &ks->ks[0];
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| 231 | int i;
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| 232 |
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| 233 | t1 = (*key)[0] << 24 | (*key)[1] << 16 | (*key)[2] << 8 | (*key)[3];
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| 234 | t2 = (*key)[4] << 24 | (*key)[5] << 16 | (*key)[6] << 8 | (*key)[7];
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| 235 |
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| 236 | c = (pc1_c_3[(t1 >> (5 )) & 0x7] << 3)
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| 237 | | (pc1_c_3[(t1 >> (5 + 8 )) & 0x7] << 2)
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| 238 | | (pc1_c_3[(t1 >> (5 + 8 + 8 )) & 0x7] << 1)
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| 239 | | (pc1_c_3[(t1 >> (5 + 8 + 8 + 8)) & 0x7] << 0)
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| 240 | | (pc1_c_4[(t2 >> (4 )) & 0xf] << 3)
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| 241 | | (pc1_c_4[(t2 >> (4 + 8 )) & 0xf] << 2)
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| 242 | | (pc1_c_4[(t2 >> (4 + 8 + 8 )) & 0xf] << 1)
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| 243 | | (pc1_c_4[(t2 >> (4 + 8 + 8 + 8)) & 0xf] << 0);
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| 244 |
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| 245 |
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| 246 | d = (pc1_d_3[(t2 >> (1 )) & 0x7] << 3)
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| 247 | | (pc1_d_3[(t2 >> (1 + 8 )) & 0x7] << 2)
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| 248 | | (pc1_d_3[(t2 >> (1 + 8 + 8 )) & 0x7] << 1)
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| 249 | | (pc1_d_3[(t2 >> (1 + 8 + 8 + 8)) & 0x7] << 0)
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| 250 | | (pc1_d_4[(t1 >> (1 )) & 0xf] << 3)
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| 251 | | (pc1_d_4[(t1 >> (1 + 8 )) & 0xf] << 2)
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| 252 | | (pc1_d_4[(t1 >> (1 + 8 + 8 )) & 0xf] << 1)
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| 253 | | (pc1_d_4[(t1 >> (1 + 8 + 8 + 8)) & 0xf] << 0);
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| 254 |
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| 255 | for (i = 0; i < 16; i++) {
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| 256 | uint32_t kc, kd;
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| 257 |
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| 258 | ROTATE_LEFT28(c, shifts[i]);
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| 259 | ROTATE_LEFT28(d, shifts[i]);
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| 260 |
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| 261 | kc = pc2_c_1[(c >> 22) & 0x3f] |
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| 262 | pc2_c_2[((c >> 16) & 0x30) | ((c >> 15) & 0xf)] |
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| 263 | pc2_c_3[((c >> 9 ) & 0x3c) | ((c >> 8 ) & 0x3)] |
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| 264 | pc2_c_4[((c >> 2 ) & 0x20) | ((c >> 1) & 0x18) | (c & 0x7)];
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| 265 | kd = pc2_d_1[(d >> 22) & 0x3f] |
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| 266 | pc2_d_2[((d >> 15) & 0x30) | ((d >> 14) & 0xf)] |
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| 267 | pc2_d_3[ (d >> 7 ) & 0x3f] |
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| 268 | pc2_d_4[((d >> 1 ) & 0x3c) | ((d ) & 0x3)];
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| 269 |
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| 270 | /* Change to byte order used by the S boxes */
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| 271 | *k = (kc & 0x00fc0000L) << 6;
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| 272 | *k |= (kc & 0x00000fc0L) << 10;
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| 273 | *k |= (kd & 0x00fc0000L) >> 10;
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| 274 | *k++ |= (kd & 0x00000fc0L) >> 6;
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| 275 | *k = (kc & 0x0003f000L) << 12;
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| 276 | *k |= (kc & 0x0000003fL) << 16;
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| 277 | *k |= (kd & 0x0003f000L) >> 4;
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| 278 | *k++ |= (kd & 0x0000003fL);
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| 279 | }
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| 280 |
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| 281 | return 0;
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| 282 | }
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| 283 |
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| 284 | /**
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| 285 | * Just like DES_set_key_unchecked() except checking that the key is
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| 286 | * not weak for or have correct parity.
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| 287 | *
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| 288 | * @param key a key to initialize the key schedule with.
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| 289 | * @param ks a key schedule to initialize.
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| 290 | *
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| 291 | * @return 0 on success, -1 on invalid parity, -2 on weak key.
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| 292 | * @ingroup hcrypto_des
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| 293 | */
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| 294 |
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| 295 | int
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| 296 | DES_set_key_checked(DES_cblock *key, DES_key_schedule *ks)
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| 297 | {
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| 298 | if (!DES_check_key_parity(key)) {
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| 299 | memset(ks, 0, sizeof(*ks));
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| 300 | return -1;
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| 301 | }
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| 302 | if (DES_is_weak_key(key)) {
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| 303 | memset(ks, 0, sizeof(*ks));
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| 304 | return -2;
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| 305 | }
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| 306 | return DES_set_key_unchecked(key, ks);
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| 307 | }
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| 308 |
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| 309 | /**
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| 310 | * Compatibility function for eay libdes, works just like
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| 311 | * DES_set_key_checked().
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| 312 | *
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| 313 | * @param key a key to initialize the key schedule with.
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| 314 | * @param ks a key schedule to initialize.
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| 315 | *
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| 316 | * @return 0 on success, -1 on invalid parity, -2 on weak key.
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| 317 | * @ingroup hcrypto_des
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| 318 | */
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| 319 |
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| 320 | int
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| 321 | DES_key_sched(DES_cblock *key, DES_key_schedule *ks)
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| 322 | {
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| 323 | return DES_set_key_checked(key, ks);
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| 324 | }
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| 325 |
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| 326 | /*
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| 327 | *
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| 328 | */
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| 329 |
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| 330 | static void
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| 331 | load(const unsigned char *b, uint32_t v[2])
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| 332 | {
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| 333 | v[0] = b[0] << 24;
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| 334 | v[0] |= b[1] << 16;
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| 335 | v[0] |= b[2] << 8;
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| 336 | v[0] |= b[3] << 0;
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| 337 | v[1] = b[4] << 24;
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| 338 | v[1] |= b[5] << 16;
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| 339 | v[1] |= b[6] << 8;
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| 340 | v[1] |= b[7] << 0;
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| 341 | }
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| 342 |
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| 343 | static void
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| 344 | store(const uint32_t v[2], unsigned char *b)
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| 345 | {
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| 346 | b[0] = (v[0] >> 24) & 0xff;
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| 347 | b[1] = (v[0] >> 16) & 0xff;
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| 348 | b[2] = (v[0] >> 8) & 0xff;
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| 349 | b[3] = (v[0] >> 0) & 0xff;
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| 350 | b[4] = (v[1] >> 24) & 0xff;
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| 351 | b[5] = (v[1] >> 16) & 0xff;
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| 352 | b[6] = (v[1] >> 8) & 0xff;
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| 353 | b[7] = (v[1] >> 0) & 0xff;
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| 354 | }
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| 355 |
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| 356 | /**
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| 357 | * Encrypt/decrypt a block using DES. Also called ECB mode
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| 358 | *
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| 359 | * @param u data to encrypt
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| 360 | * @param ks key schedule to use
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| 361 | * @param encp if non zero, encrypt. if zero, decrypt.
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| 362 | *
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| 363 | * @ingroup hcrypto_des
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| 364 | */
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| 365 |
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| 366 | void
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| 367 | DES_encrypt(uint32_t u[2], DES_key_schedule *ks, int encp)
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| 368 | {
|
|---|
| 369 | IP(u);
|
|---|
| 370 | desx(u, ks, encp);
|
|---|
| 371 | FP(u);
|
|---|
| 372 | }
|
|---|
| 373 |
|
|---|
| 374 | /**
|
|---|
| 375 | * Encrypt/decrypt a block using DES.
|
|---|
| 376 | *
|
|---|
| 377 | * @param input data to encrypt
|
|---|
| 378 | * @param output data to encrypt
|
|---|
| 379 | * @param ks key schedule to use
|
|---|
| 380 | * @param encp if non zero, encrypt. if zero, decrypt.
|
|---|
| 381 | *
|
|---|
| 382 | * @ingroup hcrypto_des
|
|---|
| 383 | */
|
|---|
| 384 |
|
|---|
| 385 | void
|
|---|
| 386 | DES_ecb_encrypt(DES_cblock *input, DES_cblock *output,
|
|---|
| 387 | DES_key_schedule *ks, int encp)
|
|---|
| 388 | {
|
|---|
| 389 | uint32_t u[2];
|
|---|
| 390 | load(*input, u);
|
|---|
| 391 | DES_encrypt(u, ks, encp);
|
|---|
| 392 | store(u, *output);
|
|---|
| 393 | }
|
|---|
| 394 |
|
|---|
| 395 | /**
|
|---|
| 396 | * Encrypt/decrypt a block using DES in Chain Block Cipher mode (cbc).
|
|---|
| 397 | *
|
|---|
| 398 | * The IV must always be diffrent for diffrent input data blocks.
|
|---|
| 399 | *
|
|---|
| 400 | * @param in data to encrypt
|
|---|
| 401 | * @param out data to encrypt
|
|---|
| 402 | * @param length length of data
|
|---|
| 403 | * @param ks key schedule to use
|
|---|
| 404 | * @param iv initial vector to use
|
|---|
| 405 | * @param encp if non zero, encrypt. if zero, decrypt.
|
|---|
| 406 | *
|
|---|
| 407 | * @ingroup hcrypto_des
|
|---|
| 408 | */
|
|---|
| 409 |
|
|---|
| 410 | void
|
|---|
| 411 | DES_cbc_encrypt(const void *in, void *out, long length,
|
|---|
| 412 | DES_key_schedule *ks, DES_cblock *iv, int encp)
|
|---|
| 413 | {
|
|---|
| 414 | const unsigned char *input = in;
|
|---|
| 415 | unsigned char *output = out;
|
|---|
| 416 | uint32_t u[2];
|
|---|
| 417 | uint32_t uiv[2];
|
|---|
| 418 |
|
|---|
| 419 | load(*iv, uiv);
|
|---|
| 420 |
|
|---|
| 421 | if (encp) {
|
|---|
| 422 | while (length >= DES_CBLOCK_LEN) {
|
|---|
| 423 | load(input, u);
|
|---|
| 424 | u[0] ^= uiv[0]; u[1] ^= uiv[1];
|
|---|
| 425 | DES_encrypt(u, ks, 1);
|
|---|
| 426 | uiv[0] = u[0]; uiv[1] = u[1];
|
|---|
| 427 | store(u, output);
|
|---|
| 428 |
|
|---|
| 429 | length -= DES_CBLOCK_LEN;
|
|---|
| 430 | input += DES_CBLOCK_LEN;
|
|---|
| 431 | output += DES_CBLOCK_LEN;
|
|---|
| 432 | }
|
|---|
| 433 | if (length) {
|
|---|
| 434 | unsigned char tmp[DES_CBLOCK_LEN];
|
|---|
| 435 | memcpy(tmp, input, length);
|
|---|
| 436 | memset(tmp + length, 0, DES_CBLOCK_LEN - length);
|
|---|
| 437 | load(tmp, u);
|
|---|
| 438 | u[0] ^= uiv[0]; u[1] ^= uiv[1];
|
|---|
| 439 | DES_encrypt(u, ks, 1);
|
|---|
| 440 | store(u, output);
|
|---|
| 441 | }
|
|---|
| 442 | } else {
|
|---|
| 443 | uint32_t t[2];
|
|---|
| 444 | while (length >= DES_CBLOCK_LEN) {
|
|---|
| 445 | load(input, u);
|
|---|
| 446 | t[0] = u[0]; t[1] = u[1];
|
|---|
| 447 | DES_encrypt(u, ks, 0);
|
|---|
| 448 | u[0] ^= uiv[0]; u[1] ^= uiv[1];
|
|---|
| 449 | store(u, output);
|
|---|
| 450 | uiv[0] = t[0]; uiv[1] = t[1];
|
|---|
| 451 |
|
|---|
| 452 | length -= DES_CBLOCK_LEN;
|
|---|
| 453 | input += DES_CBLOCK_LEN;
|
|---|
| 454 | output += DES_CBLOCK_LEN;
|
|---|
| 455 | }
|
|---|
| 456 | if (length) {
|
|---|
| 457 | unsigned char tmp[DES_CBLOCK_LEN];
|
|---|
| 458 | memcpy(tmp, input, length);
|
|---|
| 459 | memset(tmp + length, 0, DES_CBLOCK_LEN - length);
|
|---|
| 460 | load(tmp, u);
|
|---|
| 461 | DES_encrypt(u, ks, 0);
|
|---|
| 462 | u[0] ^= uiv[0]; u[1] ^= uiv[1];
|
|---|
| 463 | store(u, output);
|
|---|
| 464 | }
|
|---|
| 465 | }
|
|---|
| 466 | uiv[0] = 0; u[0] = 0; uiv[1] = 0; u[1] = 0;
|
|---|
| 467 | }
|
|---|
| 468 |
|
|---|
| 469 | /**
|
|---|
| 470 | * Encrypt/decrypt a block using DES in Propagating Cipher Block
|
|---|
| 471 | * Chaining mode. This mode is only used for Kerberos 4, and it should
|
|---|
| 472 | * stay that way.
|
|---|
| 473 | *
|
|---|
| 474 | * The IV must always be diffrent for diffrent input data blocks.
|
|---|
| 475 | *
|
|---|
| 476 | * @param in data to encrypt
|
|---|
| 477 | * @param out data to encrypt
|
|---|
| 478 | * @param length length of data
|
|---|
| 479 | * @param ks key schedule to use
|
|---|
| 480 | * @param iv initial vector to use
|
|---|
| 481 | * @param encp if non zero, encrypt. if zero, decrypt.
|
|---|
| 482 | *
|
|---|
| 483 | * @ingroup hcrypto_des
|
|---|
| 484 | */
|
|---|
| 485 |
|
|---|
| 486 | void
|
|---|
| 487 | DES_pcbc_encrypt(const void *in, void *out, long length,
|
|---|
| 488 | DES_key_schedule *ks, DES_cblock *iv, int encp)
|
|---|
| 489 | {
|
|---|
| 490 | const unsigned char *input = in;
|
|---|
| 491 | unsigned char *output = out;
|
|---|
| 492 | uint32_t u[2];
|
|---|
| 493 | uint32_t uiv[2];
|
|---|
| 494 |
|
|---|
| 495 | load(*iv, uiv);
|
|---|
| 496 |
|
|---|
| 497 | if (encp) {
|
|---|
| 498 | uint32_t t[2];
|
|---|
| 499 | while (length >= DES_CBLOCK_LEN) {
|
|---|
| 500 | load(input, u);
|
|---|
| 501 | t[0] = u[0]; t[1] = u[1];
|
|---|
| 502 | u[0] ^= uiv[0]; u[1] ^= uiv[1];
|
|---|
| 503 | DES_encrypt(u, ks, 1);
|
|---|
| 504 | uiv[0] = u[0] ^ t[0]; uiv[1] = u[1] ^ t[1];
|
|---|
| 505 | store(u, output);
|
|---|
| 506 |
|
|---|
| 507 | length -= DES_CBLOCK_LEN;
|
|---|
| 508 | input += DES_CBLOCK_LEN;
|
|---|
| 509 | output += DES_CBLOCK_LEN;
|
|---|
| 510 | }
|
|---|
| 511 | if (length) {
|
|---|
| 512 | unsigned char tmp[DES_CBLOCK_LEN];
|
|---|
| 513 | memcpy(tmp, input, length);
|
|---|
| 514 | memset(tmp + length, 0, DES_CBLOCK_LEN - length);
|
|---|
| 515 | load(tmp, u);
|
|---|
| 516 | u[0] ^= uiv[0]; u[1] ^= uiv[1];
|
|---|
| 517 | DES_encrypt(u, ks, 1);
|
|---|
| 518 | store(u, output);
|
|---|
| 519 | }
|
|---|
| 520 | } else {
|
|---|
| 521 | uint32_t t[2];
|
|---|
| 522 | while (length >= DES_CBLOCK_LEN) {
|
|---|
| 523 | load(input, u);
|
|---|
| 524 | t[0] = u[0]; t[1] = u[1];
|
|---|
| 525 | DES_encrypt(u, ks, 0);
|
|---|
| 526 | u[0] ^= uiv[0]; u[1] ^= uiv[1];
|
|---|
| 527 | store(u, output);
|
|---|
| 528 | uiv[0] = t[0] ^ u[0]; uiv[1] = t[1] ^ u[1];
|
|---|
| 529 |
|
|---|
| 530 | length -= DES_CBLOCK_LEN;
|
|---|
| 531 | input += DES_CBLOCK_LEN;
|
|---|
| 532 | output += DES_CBLOCK_LEN;
|
|---|
| 533 | }
|
|---|
| 534 | if (length) {
|
|---|
| 535 | unsigned char tmp[DES_CBLOCK_LEN];
|
|---|
| 536 | memcpy(tmp, input, length);
|
|---|
| 537 | memset(tmp + length, 0, DES_CBLOCK_LEN - length);
|
|---|
| 538 | load(tmp, u);
|
|---|
| 539 | DES_encrypt(u, ks, 0);
|
|---|
| 540 | u[0] ^= uiv[0]; u[1] ^= uiv[1];
|
|---|
| 541 | }
|
|---|
| 542 | }
|
|---|
| 543 | uiv[0] = 0; u[0] = 0; uiv[1] = 0; u[1] = 0;
|
|---|
| 544 | }
|
|---|
| 545 |
|
|---|
| 546 | /*
|
|---|
| 547 | *
|
|---|
| 548 | */
|
|---|
| 549 |
|
|---|
| 550 | static void
|
|---|
| 551 | _des3_encrypt(uint32_t u[2], DES_key_schedule *ks1, DES_key_schedule *ks2,
|
|---|
| 552 | DES_key_schedule *ks3, int encp)
|
|---|
| 553 | {
|
|---|
| 554 | IP(u);
|
|---|
| 555 | if (encp) {
|
|---|
| 556 | desx(u, ks1, 1); /* IP + FP cancel out each other */
|
|---|
| 557 | desx(u, ks2, 0);
|
|---|
| 558 | desx(u, ks3, 1);
|
|---|
| 559 | } else {
|
|---|
| 560 | desx(u, ks3, 0);
|
|---|
| 561 | desx(u, ks2, 1);
|
|---|
| 562 | desx(u, ks1, 0);
|
|---|
| 563 | }
|
|---|
| 564 | FP(u);
|
|---|
| 565 | }
|
|---|
| 566 |
|
|---|
| 567 | /**
|
|---|
| 568 | * Encrypt/decrypt a block using triple DES using EDE mode,
|
|---|
| 569 | * encrypt/decrypt/encrypt.
|
|---|
| 570 | *
|
|---|
| 571 | * @param input data to encrypt
|
|---|
| 572 | * @param output data to encrypt
|
|---|
| 573 | * @param ks1 key schedule to use
|
|---|
| 574 | * @param ks2 key schedule to use
|
|---|
| 575 | * @param ks3 key schedule to use
|
|---|
| 576 | * @param encp if non zero, encrypt. if zero, decrypt.
|
|---|
| 577 | *
|
|---|
| 578 | * @ingroup hcrypto_des
|
|---|
| 579 | */
|
|---|
| 580 |
|
|---|
| 581 | void
|
|---|
| 582 | DES_ecb3_encrypt(DES_cblock *input,
|
|---|
| 583 | DES_cblock *output,
|
|---|
| 584 | DES_key_schedule *ks1,
|
|---|
| 585 | DES_key_schedule *ks2,
|
|---|
| 586 | DES_key_schedule *ks3,
|
|---|
| 587 | int encp)
|
|---|
| 588 | {
|
|---|
| 589 | uint32_t u[2];
|
|---|
| 590 | load(*input, u);
|
|---|
| 591 | _des3_encrypt(u, ks1, ks2, ks3, encp);
|
|---|
| 592 | store(u, *output);
|
|---|
| 593 | return;
|
|---|
| 594 | }
|
|---|
| 595 |
|
|---|
| 596 | /**
|
|---|
| 597 | * Encrypt/decrypt using Triple DES in Chain Block Cipher mode (cbc).
|
|---|
| 598 | *
|
|---|
| 599 | * The IV must always be diffrent for diffrent input data blocks.
|
|---|
| 600 | *
|
|---|
| 601 | * @param in data to encrypt
|
|---|
| 602 | * @param out data to encrypt
|
|---|
| 603 | * @param length length of data
|
|---|
| 604 | * @param ks1 key schedule to use
|
|---|
| 605 | * @param ks2 key schedule to use
|
|---|
| 606 | * @param ks3 key schedule to use
|
|---|
| 607 | * @param iv initial vector to use
|
|---|
| 608 | * @param encp if non zero, encrypt. if zero, decrypt.
|
|---|
| 609 | *
|
|---|
| 610 | * @ingroup hcrypto_des
|
|---|
| 611 | */
|
|---|
| 612 |
|
|---|
| 613 | void
|
|---|
| 614 | DES_ede3_cbc_encrypt(const void *in, void *out,
|
|---|
| 615 | long length, DES_key_schedule *ks1,
|
|---|
| 616 | DES_key_schedule *ks2, DES_key_schedule *ks3,
|
|---|
| 617 | DES_cblock *iv, int encp)
|
|---|
| 618 | {
|
|---|
| 619 | const unsigned char *input = in;
|
|---|
| 620 | unsigned char *output = out;
|
|---|
| 621 | uint32_t u[2];
|
|---|
| 622 | uint32_t uiv[2];
|
|---|
| 623 |
|
|---|
| 624 | load(*iv, uiv);
|
|---|
| 625 |
|
|---|
| 626 | if (encp) {
|
|---|
| 627 | while (length >= DES_CBLOCK_LEN) {
|
|---|
| 628 | load(input, u);
|
|---|
| 629 | u[0] ^= uiv[0]; u[1] ^= uiv[1];
|
|---|
| 630 | _des3_encrypt(u, ks1, ks2, ks3, 1);
|
|---|
| 631 | uiv[0] = u[0]; uiv[1] = u[1];
|
|---|
| 632 | store(u, output);
|
|---|
| 633 |
|
|---|
| 634 | length -= DES_CBLOCK_LEN;
|
|---|
| 635 | input += DES_CBLOCK_LEN;
|
|---|
| 636 | output += DES_CBLOCK_LEN;
|
|---|
| 637 | }
|
|---|
| 638 | if (length) {
|
|---|
| 639 | unsigned char tmp[DES_CBLOCK_LEN];
|
|---|
| 640 | memcpy(tmp, input, length);
|
|---|
| 641 | memset(tmp + length, 0, DES_CBLOCK_LEN - length);
|
|---|
| 642 | load(tmp, u);
|
|---|
| 643 | u[0] ^= uiv[0]; u[1] ^= uiv[1];
|
|---|
| 644 | _des3_encrypt(u, ks1, ks2, ks3, 1);
|
|---|
| 645 | store(u, output);
|
|---|
| 646 | }
|
|---|
| 647 | } else {
|
|---|
| 648 | uint32_t t[2];
|
|---|
| 649 | while (length >= DES_CBLOCK_LEN) {
|
|---|
| 650 | load(input, u);
|
|---|
| 651 | t[0] = u[0]; t[1] = u[1];
|
|---|
| 652 | _des3_encrypt(u, ks1, ks2, ks3, 0);
|
|---|
| 653 | u[0] ^= uiv[0]; u[1] ^= uiv[1];
|
|---|
| 654 | store(u, output);
|
|---|
| 655 | uiv[0] = t[0]; uiv[1] = t[1];
|
|---|
| 656 |
|
|---|
| 657 | length -= DES_CBLOCK_LEN;
|
|---|
| 658 | input += DES_CBLOCK_LEN;
|
|---|
| 659 | output += DES_CBLOCK_LEN;
|
|---|
| 660 | }
|
|---|
| 661 | if (length) {
|
|---|
| 662 | unsigned char tmp[DES_CBLOCK_LEN];
|
|---|
| 663 | memcpy(tmp, input, length);
|
|---|
| 664 | memset(tmp + length, 0, DES_CBLOCK_LEN - length);
|
|---|
| 665 | load(tmp, u);
|
|---|
| 666 | _des3_encrypt(u, ks1, ks2, ks3, 0);
|
|---|
| 667 | u[0] ^= uiv[0]; u[1] ^= uiv[1];
|
|---|
| 668 | store(u, output);
|
|---|
| 669 | }
|
|---|
| 670 | }
|
|---|
| 671 | store(uiv, *iv);
|
|---|
| 672 | uiv[0] = 0; u[0] = 0; uiv[1] = 0; u[1] = 0;
|
|---|
| 673 | }
|
|---|
| 674 |
|
|---|
| 675 | /**
|
|---|
| 676 | * Encrypt/decrypt using DES in cipher feedback mode with 64 bit
|
|---|
| 677 | * feedback.
|
|---|
| 678 | *
|
|---|
| 679 | * The IV must always be diffrent for diffrent input data blocks.
|
|---|
| 680 | *
|
|---|
| 681 | * @param in data to encrypt
|
|---|
| 682 | * @param out data to encrypt
|
|---|
| 683 | * @param length length of data
|
|---|
| 684 | * @param ks key schedule to use
|
|---|
| 685 | * @param iv initial vector to use
|
|---|
| 686 | * @param num offset into in cipher block encryption/decryption stop last time.
|
|---|
| 687 | * @param encp if non zero, encrypt. if zero, decrypt.
|
|---|
| 688 | *
|
|---|
| 689 | * @ingroup hcrypto_des
|
|---|
| 690 | */
|
|---|
| 691 |
|
|---|
| 692 | void
|
|---|
| 693 | DES_cfb64_encrypt(const void *in, void *out,
|
|---|
| 694 | long length, DES_key_schedule *ks, DES_cblock *iv,
|
|---|
| 695 | int *num, int encp)
|
|---|
| 696 | {
|
|---|
| 697 | const unsigned char *input = in;
|
|---|
| 698 | unsigned char *output = out;
|
|---|
| 699 | unsigned char tmp[DES_CBLOCK_LEN];
|
|---|
| 700 | uint32_t uiv[2];
|
|---|
| 701 |
|
|---|
| 702 | load(*iv, uiv);
|
|---|
| 703 |
|
|---|
| 704 | assert(*num >= 0 && *num < DES_CBLOCK_LEN);
|
|---|
| 705 |
|
|---|
| 706 | if (encp) {
|
|---|
| 707 | int i = *num;
|
|---|
| 708 |
|
|---|
| 709 | while (length > 0) {
|
|---|
| 710 | if (i == 0)
|
|---|
| 711 | DES_encrypt(uiv, ks, 1);
|
|---|
| 712 | store(uiv, tmp);
|
|---|
| 713 | for (; i < DES_CBLOCK_LEN && i < length; i++) {
|
|---|
| 714 | output[i] = tmp[i] ^ input[i];
|
|---|
| 715 | }
|
|---|
| 716 | if (i == DES_CBLOCK_LEN)
|
|---|
| 717 | load(output, uiv);
|
|---|
| 718 | output += i;
|
|---|
| 719 | input += i;
|
|---|
| 720 | length -= i;
|
|---|
| 721 | if (i == DES_CBLOCK_LEN)
|
|---|
| 722 | i = 0;
|
|---|
| 723 | }
|
|---|
| 724 | store(uiv, *iv);
|
|---|
| 725 | *num = i;
|
|---|
| 726 | } else {
|
|---|
| 727 | int i = *num;
|
|---|
| 728 | unsigned char c;
|
|---|
| 729 |
|
|---|
| 730 | while (length > 0) {
|
|---|
| 731 | if (i == 0) {
|
|---|
| 732 | DES_encrypt(uiv, ks, 1);
|
|---|
| 733 | store(uiv, tmp);
|
|---|
| 734 | }
|
|---|
| 735 | for (; i < DES_CBLOCK_LEN && i < length; i++) {
|
|---|
| 736 | c = input[i];
|
|---|
| 737 | output[i] = tmp[i] ^ input[i];
|
|---|
| 738 | (*iv)[i] = c;
|
|---|
| 739 | }
|
|---|
| 740 | output += i;
|
|---|
| 741 | input += i;
|
|---|
| 742 | length -= i;
|
|---|
| 743 | if (i == DES_CBLOCK_LEN) {
|
|---|
| 744 | i = 0;
|
|---|
| 745 | load(*iv, uiv);
|
|---|
| 746 | }
|
|---|
| 747 | }
|
|---|
| 748 | store(uiv, *iv);
|
|---|
| 749 | *num = i;
|
|---|
| 750 | }
|
|---|
| 751 | }
|
|---|
| 752 |
|
|---|
| 753 | /**
|
|---|
| 754 | * Crete a checksum using DES in CBC encryption mode. This mode is
|
|---|
| 755 | * only used for Kerberos 4, and it should stay that way.
|
|---|
| 756 | *
|
|---|
| 757 | * The IV must always be diffrent for diffrent input data blocks.
|
|---|
| 758 | *
|
|---|
| 759 | * @param in data to checksum
|
|---|
| 760 | * @param output the checksum
|
|---|
| 761 | * @param length length of data
|
|---|
| 762 | * @param ks key schedule to use
|
|---|
| 763 | * @param iv initial vector to use
|
|---|
| 764 | *
|
|---|
| 765 | * @ingroup hcrypto_des
|
|---|
| 766 | */
|
|---|
| 767 |
|
|---|
| 768 | uint32_t
|
|---|
| 769 | DES_cbc_cksum(const void *in, DES_cblock *output,
|
|---|
| 770 | long length, DES_key_schedule *ks, DES_cblock *iv)
|
|---|
| 771 | {
|
|---|
| 772 | const unsigned char *input = in;
|
|---|
| 773 | uint32_t uiv[2];
|
|---|
| 774 | uint32_t u[2] = { 0, 0 };
|
|---|
| 775 |
|
|---|
| 776 | load(*iv, uiv);
|
|---|
| 777 |
|
|---|
| 778 | while (length >= DES_CBLOCK_LEN) {
|
|---|
| 779 | load(input, u);
|
|---|
| 780 | u[0] ^= uiv[0]; u[1] ^= uiv[1];
|
|---|
| 781 | DES_encrypt(u, ks, 1);
|
|---|
| 782 | uiv[0] = u[0]; uiv[1] = u[1];
|
|---|
| 783 |
|
|---|
| 784 | length -= DES_CBLOCK_LEN;
|
|---|
| 785 | input += DES_CBLOCK_LEN;
|
|---|
| 786 | }
|
|---|
| 787 | if (length) {
|
|---|
| 788 | unsigned char tmp[DES_CBLOCK_LEN];
|
|---|
| 789 | memcpy(tmp, input, length);
|
|---|
| 790 | memset(tmp + length, 0, DES_CBLOCK_LEN - length);
|
|---|
| 791 | load(tmp, u);
|
|---|
| 792 | u[0] ^= uiv[0]; u[1] ^= uiv[1];
|
|---|
| 793 | DES_encrypt(u, ks, 1);
|
|---|
| 794 | }
|
|---|
| 795 | if (output)
|
|---|
| 796 | store(u, *output);
|
|---|
| 797 |
|
|---|
| 798 | uiv[0] = 0; u[0] = 0; uiv[1] = 0;
|
|---|
| 799 | return u[1];
|
|---|
| 800 | }
|
|---|
| 801 |
|
|---|
| 802 | /*
|
|---|
| 803 | *
|
|---|
| 804 | */
|
|---|
| 805 |
|
|---|
| 806 | static unsigned char
|
|---|
| 807 | bitswap8(unsigned char b)
|
|---|
| 808 | {
|
|---|
| 809 | unsigned char r = 0;
|
|---|
| 810 | int i;
|
|---|
| 811 | for (i = 0; i < 8; i++) {
|
|---|
| 812 | r = r << 1 | (b & 1);
|
|---|
| 813 | b = b >> 1;
|
|---|
| 814 | }
|
|---|
| 815 | return r;
|
|---|
| 816 | }
|
|---|
| 817 |
|
|---|
| 818 | /**
|
|---|
| 819 | * Convert a string to a DES key. Use something like
|
|---|
| 820 | * PKCS5_PBKDF2_HMAC_SHA1() to create key from passwords.
|
|---|
| 821 | *
|
|---|
| 822 | * @param str The string to convert to a key
|
|---|
| 823 | * @param key the resulting key
|
|---|
| 824 | *
|
|---|
| 825 | * @ingroup hcrypto_des
|
|---|
| 826 | */
|
|---|
| 827 |
|
|---|
| 828 | void
|
|---|
| 829 | DES_string_to_key(const char *str, DES_cblock *key)
|
|---|
| 830 | {
|
|---|
| 831 | const unsigned char *s;
|
|---|
| 832 | unsigned char *k;
|
|---|
| 833 | DES_key_schedule ks;
|
|---|
| 834 | size_t i, len;
|
|---|
| 835 |
|
|---|
| 836 | memset(key, 0, sizeof(*key));
|
|---|
| 837 | k = *key;
|
|---|
| 838 | s = (const unsigned char *)str;
|
|---|
| 839 |
|
|---|
| 840 | len = strlen(str);
|
|---|
| 841 | for (i = 0; i < len; i++) {
|
|---|
| 842 | if ((i % 16) < 8)
|
|---|
| 843 | k[i % 8] ^= s[i] << 1;
|
|---|
| 844 | else
|
|---|
| 845 | k[7 - (i % 8)] ^= bitswap8(s[i]);
|
|---|
| 846 | }
|
|---|
| 847 | DES_set_odd_parity(key);
|
|---|
| 848 | if (DES_is_weak_key(key))
|
|---|
| 849 | k[7] ^= 0xF0;
|
|---|
| 850 | DES_set_key(key, &ks);
|
|---|
| 851 | DES_cbc_cksum(s, key, len, &ks, key);
|
|---|
| 852 | memset(&ks, 0, sizeof(ks));
|
|---|
| 853 | DES_set_odd_parity(key);
|
|---|
| 854 | if (DES_is_weak_key(key))
|
|---|
| 855 | k[7] ^= 0xF0;
|
|---|
| 856 | }
|
|---|
| 857 |
|
|---|
| 858 | /**
|
|---|
| 859 | * Read password from prompt and create a DES key. Internal uses
|
|---|
| 860 | * DES_string_to_key(). Really, go use a really string2key function
|
|---|
| 861 | * like PKCS5_PBKDF2_HMAC_SHA1().
|
|---|
| 862 | *
|
|---|
| 863 | * @param key key to convert to
|
|---|
| 864 | * @param prompt prompt to display user
|
|---|
| 865 | * @param verify prompt twice.
|
|---|
| 866 | *
|
|---|
| 867 | * @return 1 on success, non 1 on failure.
|
|---|
| 868 | */
|
|---|
| 869 |
|
|---|
| 870 | int
|
|---|
| 871 | DES_read_password(DES_cblock *key, char *prompt, int verify)
|
|---|
| 872 | {
|
|---|
| 873 | char buf[512];
|
|---|
| 874 | int ret;
|
|---|
| 875 |
|
|---|
| 876 | ret = UI_UTIL_read_pw_string(buf, sizeof(buf) - 1, prompt, verify);
|
|---|
| 877 | if (ret == 1)
|
|---|
| 878 | DES_string_to_key(buf, key);
|
|---|
| 879 | return ret;
|
|---|
| 880 | }
|
|---|
| 881 |
|
|---|
| 882 | /*
|
|---|
| 883 | *
|
|---|
| 884 | */
|
|---|
| 885 |
|
|---|
| 886 |
|
|---|
| 887 | void
|
|---|
| 888 | _DES_ipfp_test(void)
|
|---|
| 889 | {
|
|---|
| 890 | DES_cblock k = "\x01\x02\x04\x08\x10\x20\x40\x80", k2;
|
|---|
| 891 | uint32_t u[2] = { 1, 0 };
|
|---|
| 892 | IP(u);
|
|---|
| 893 | FP(u);
|
|---|
| 894 | IP(u);
|
|---|
| 895 | FP(u);
|
|---|
| 896 | if (u[0] != 1 || u[1] != 0)
|
|---|
| 897 | abort();
|
|---|
| 898 |
|
|---|
| 899 | load(k, u);
|
|---|
| 900 | store(u, k2);
|
|---|
| 901 | if (memcmp(k, k2, 8) != 0)
|
|---|
| 902 | abort();
|
|---|
| 903 | }
|
|---|
| 904 |
|
|---|
| 905 | /* D3DES (V5.09) -
|
|---|
| 906 | *
|
|---|
| 907 | * A portable, public domain, version of the Data Encryption Standard.
|
|---|
| 908 | *
|
|---|
| 909 | * Written with Symantec's THINK (Lightspeed) C by Richard Outerbridge.
|
|---|
| 910 | * Thanks to: Dan Hoey for his excellent Initial and Inverse permutation
|
|---|
| 911 | * code; Jim Gillogly & Phil Karn for the DES key schedule code; Dennis
|
|---|
| 912 | * Ferguson, Eric Young and Dana How for comparing notes; and Ray Lau,
|
|---|
| 913 | * for humouring me on.
|
|---|
| 914 | *
|
|---|
| 915 | * Copyright (c) 1988,1989,1990,1991,1992 by Richard Outerbridge.
|
|---|
| 916 | * (GEnie : OUTER; CIS : [71755,204]) Graven Imagery, 1992.
|
|---|
| 917 | */
|
|---|
| 918 |
|
|---|
| 919 | static uint32_t SP1[64] = {
|
|---|
| 920 | 0x01010400L, 0x00000000L, 0x00010000L, 0x01010404L,
|
|---|
| 921 | 0x01010004L, 0x00010404L, 0x00000004L, 0x00010000L,
|
|---|
| 922 | 0x00000400L, 0x01010400L, 0x01010404L, 0x00000400L,
|
|---|
| 923 | 0x01000404L, 0x01010004L, 0x01000000L, 0x00000004L,
|
|---|
| 924 | 0x00000404L, 0x01000400L, 0x01000400L, 0x00010400L,
|
|---|
| 925 | 0x00010400L, 0x01010000L, 0x01010000L, 0x01000404L,
|
|---|
| 926 | 0x00010004L, 0x01000004L, 0x01000004L, 0x00010004L,
|
|---|
| 927 | 0x00000000L, 0x00000404L, 0x00010404L, 0x01000000L,
|
|---|
| 928 | 0x00010000L, 0x01010404L, 0x00000004L, 0x01010000L,
|
|---|
| 929 | 0x01010400L, 0x01000000L, 0x01000000L, 0x00000400L,
|
|---|
| 930 | 0x01010004L, 0x00010000L, 0x00010400L, 0x01000004L,
|
|---|
| 931 | 0x00000400L, 0x00000004L, 0x01000404L, 0x00010404L,
|
|---|
| 932 | 0x01010404L, 0x00010004L, 0x01010000L, 0x01000404L,
|
|---|
| 933 | 0x01000004L, 0x00000404L, 0x00010404L, 0x01010400L,
|
|---|
| 934 | 0x00000404L, 0x01000400L, 0x01000400L, 0x00000000L,
|
|---|
| 935 | 0x00010004L, 0x00010400L, 0x00000000L, 0x01010004L };
|
|---|
| 936 |
|
|---|
| 937 | static uint32_t SP2[64] = {
|
|---|
| 938 | 0x80108020L, 0x80008000L, 0x00008000L, 0x00108020L,
|
|---|
| 939 | 0x00100000L, 0x00000020L, 0x80100020L, 0x80008020L,
|
|---|
| 940 | 0x80000020L, 0x80108020L, 0x80108000L, 0x80000000L,
|
|---|
| 941 | 0x80008000L, 0x00100000L, 0x00000020L, 0x80100020L,
|
|---|
| 942 | 0x00108000L, 0x00100020L, 0x80008020L, 0x00000000L,
|
|---|
| 943 | 0x80000000L, 0x00008000L, 0x00108020L, 0x80100000L,
|
|---|
| 944 | 0x00100020L, 0x80000020L, 0x00000000L, 0x00108000L,
|
|---|
| 945 | 0x00008020L, 0x80108000L, 0x80100000L, 0x00008020L,
|
|---|
| 946 | 0x00000000L, 0x00108020L, 0x80100020L, 0x00100000L,
|
|---|
| 947 | 0x80008020L, 0x80100000L, 0x80108000L, 0x00008000L,
|
|---|
| 948 | 0x80100000L, 0x80008000L, 0x00000020L, 0x80108020L,
|
|---|
| 949 | 0x00108020L, 0x00000020L, 0x00008000L, 0x80000000L,
|
|---|
| 950 | 0x00008020L, 0x80108000L, 0x00100000L, 0x80000020L,
|
|---|
| 951 | 0x00100020L, 0x80008020L, 0x80000020L, 0x00100020L,
|
|---|
| 952 | 0x00108000L, 0x00000000L, 0x80008000L, 0x00008020L,
|
|---|
| 953 | 0x80000000L, 0x80100020L, 0x80108020L, 0x00108000L };
|
|---|
| 954 |
|
|---|
| 955 | static uint32_t SP3[64] = {
|
|---|
| 956 | 0x00000208L, 0x08020200L, 0x00000000L, 0x08020008L,
|
|---|
| 957 | 0x08000200L, 0x00000000L, 0x00020208L, 0x08000200L,
|
|---|
| 958 | 0x00020008L, 0x08000008L, 0x08000008L, 0x00020000L,
|
|---|
| 959 | 0x08020208L, 0x00020008L, 0x08020000L, 0x00000208L,
|
|---|
| 960 | 0x08000000L, 0x00000008L, 0x08020200L, 0x00000200L,
|
|---|
| 961 | 0x00020200L, 0x08020000L, 0x08020008L, 0x00020208L,
|
|---|
| 962 | 0x08000208L, 0x00020200L, 0x00020000L, 0x08000208L,
|
|---|
| 963 | 0x00000008L, 0x08020208L, 0x00000200L, 0x08000000L,
|
|---|
| 964 | 0x08020200L, 0x08000000L, 0x00020008L, 0x00000208L,
|
|---|
| 965 | 0x00020000L, 0x08020200L, 0x08000200L, 0x00000000L,
|
|---|
| 966 | 0x00000200L, 0x00020008L, 0x08020208L, 0x08000200L,
|
|---|
| 967 | 0x08000008L, 0x00000200L, 0x00000000L, 0x08020008L,
|
|---|
| 968 | 0x08000208L, 0x00020000L, 0x08000000L, 0x08020208L,
|
|---|
| 969 | 0x00000008L, 0x00020208L, 0x00020200L, 0x08000008L,
|
|---|
| 970 | 0x08020000L, 0x08000208L, 0x00000208L, 0x08020000L,
|
|---|
| 971 | 0x00020208L, 0x00000008L, 0x08020008L, 0x00020200L };
|
|---|
| 972 |
|
|---|
| 973 | static uint32_t SP4[64] = {
|
|---|
| 974 | 0x00802001L, 0x00002081L, 0x00002081L, 0x00000080L,
|
|---|
| 975 | 0x00802080L, 0x00800081L, 0x00800001L, 0x00002001L,
|
|---|
| 976 | 0x00000000L, 0x00802000L, 0x00802000L, 0x00802081L,
|
|---|
| 977 | 0x00000081L, 0x00000000L, 0x00800080L, 0x00800001L,
|
|---|
| 978 | 0x00000001L, 0x00002000L, 0x00800000L, 0x00802001L,
|
|---|
| 979 | 0x00000080L, 0x00800000L, 0x00002001L, 0x00002080L,
|
|---|
| 980 | 0x00800081L, 0x00000001L, 0x00002080L, 0x00800080L,
|
|---|
| 981 | 0x00002000L, 0x00802080L, 0x00802081L, 0x00000081L,
|
|---|
| 982 | 0x00800080L, 0x00800001L, 0x00802000L, 0x00802081L,
|
|---|
| 983 | 0x00000081L, 0x00000000L, 0x00000000L, 0x00802000L,
|
|---|
| 984 | 0x00002080L, 0x00800080L, 0x00800081L, 0x00000001L,
|
|---|
| 985 | 0x00802001L, 0x00002081L, 0x00002081L, 0x00000080L,
|
|---|
| 986 | 0x00802081L, 0x00000081L, 0x00000001L, 0x00002000L,
|
|---|
| 987 | 0x00800001L, 0x00002001L, 0x00802080L, 0x00800081L,
|
|---|
| 988 | 0x00002001L, 0x00002080L, 0x00800000L, 0x00802001L,
|
|---|
| 989 | 0x00000080L, 0x00800000L, 0x00002000L, 0x00802080L };
|
|---|
| 990 |
|
|---|
| 991 | static uint32_t SP5[64] = {
|
|---|
| 992 | 0x00000100L, 0x02080100L, 0x02080000L, 0x42000100L,
|
|---|
| 993 | 0x00080000L, 0x00000100L, 0x40000000L, 0x02080000L,
|
|---|
| 994 | 0x40080100L, 0x00080000L, 0x02000100L, 0x40080100L,
|
|---|
| 995 | 0x42000100L, 0x42080000L, 0x00080100L, 0x40000000L,
|
|---|
| 996 | 0x02000000L, 0x40080000L, 0x40080000L, 0x00000000L,
|
|---|
| 997 | 0x40000100L, 0x42080100L, 0x42080100L, 0x02000100L,
|
|---|
| 998 | 0x42080000L, 0x40000100L, 0x00000000L, 0x42000000L,
|
|---|
| 999 | 0x02080100L, 0x02000000L, 0x42000000L, 0x00080100L,
|
|---|
| 1000 | 0x00080000L, 0x42000100L, 0x00000100L, 0x02000000L,
|
|---|
| 1001 | 0x40000000L, 0x02080000L, 0x42000100L, 0x40080100L,
|
|---|
| 1002 | 0x02000100L, 0x40000000L, 0x42080000L, 0x02080100L,
|
|---|
| 1003 | 0x40080100L, 0x00000100L, 0x02000000L, 0x42080000L,
|
|---|
| 1004 | 0x42080100L, 0x00080100L, 0x42000000L, 0x42080100L,
|
|---|
| 1005 | 0x02080000L, 0x00000000L, 0x40080000L, 0x42000000L,
|
|---|
| 1006 | 0x00080100L, 0x02000100L, 0x40000100L, 0x00080000L,
|
|---|
| 1007 | 0x00000000L, 0x40080000L, 0x02080100L, 0x40000100L };
|
|---|
| 1008 |
|
|---|
| 1009 | static uint32_t SP6[64] = {
|
|---|
| 1010 | 0x20000010L, 0x20400000L, 0x00004000L, 0x20404010L,
|
|---|
| 1011 | 0x20400000L, 0x00000010L, 0x20404010L, 0x00400000L,
|
|---|
| 1012 | 0x20004000L, 0x00404010L, 0x00400000L, 0x20000010L,
|
|---|
| 1013 | 0x00400010L, 0x20004000L, 0x20000000L, 0x00004010L,
|
|---|
| 1014 | 0x00000000L, 0x00400010L, 0x20004010L, 0x00004000L,
|
|---|
| 1015 | 0x00404000L, 0x20004010L, 0x00000010L, 0x20400010L,
|
|---|
| 1016 | 0x20400010L, 0x00000000L, 0x00404010L, 0x20404000L,
|
|---|
| 1017 | 0x00004010L, 0x00404000L, 0x20404000L, 0x20000000L,
|
|---|
| 1018 | 0x20004000L, 0x00000010L, 0x20400010L, 0x00404000L,
|
|---|
| 1019 | 0x20404010L, 0x00400000L, 0x00004010L, 0x20000010L,
|
|---|
| 1020 | 0x00400000L, 0x20004000L, 0x20000000L, 0x00004010L,
|
|---|
| 1021 | 0x20000010L, 0x20404010L, 0x00404000L, 0x20400000L,
|
|---|
| 1022 | 0x00404010L, 0x20404000L, 0x00000000L, 0x20400010L,
|
|---|
| 1023 | 0x00000010L, 0x00004000L, 0x20400000L, 0x00404010L,
|
|---|
| 1024 | 0x00004000L, 0x00400010L, 0x20004010L, 0x00000000L,
|
|---|
| 1025 | 0x20404000L, 0x20000000L, 0x00400010L, 0x20004010L };
|
|---|
| 1026 |
|
|---|
| 1027 | static uint32_t SP7[64] = {
|
|---|
| 1028 | 0x00200000L, 0x04200002L, 0x04000802L, 0x00000000L,
|
|---|
| 1029 | 0x00000800L, 0x04000802L, 0x00200802L, 0x04200800L,
|
|---|
| 1030 | 0x04200802L, 0x00200000L, 0x00000000L, 0x04000002L,
|
|---|
| 1031 | 0x00000002L, 0x04000000L, 0x04200002L, 0x00000802L,
|
|---|
| 1032 | 0x04000800L, 0x00200802L, 0x00200002L, 0x04000800L,
|
|---|
| 1033 | 0x04000002L, 0x04200000L, 0x04200800L, 0x00200002L,
|
|---|
| 1034 | 0x04200000L, 0x00000800L, 0x00000802L, 0x04200802L,
|
|---|
| 1035 | 0x00200800L, 0x00000002L, 0x04000000L, 0x00200800L,
|
|---|
| 1036 | 0x04000000L, 0x00200800L, 0x00200000L, 0x04000802L,
|
|---|
| 1037 | 0x04000802L, 0x04200002L, 0x04200002L, 0x00000002L,
|
|---|
| 1038 | 0x00200002L, 0x04000000L, 0x04000800L, 0x00200000L,
|
|---|
| 1039 | 0x04200800L, 0x00000802L, 0x00200802L, 0x04200800L,
|
|---|
| 1040 | 0x00000802L, 0x04000002L, 0x04200802L, 0x04200000L,
|
|---|
| 1041 | 0x00200800L, 0x00000000L, 0x00000002L, 0x04200802L,
|
|---|
| 1042 | 0x00000000L, 0x00200802L, 0x04200000L, 0x00000800L,
|
|---|
| 1043 | 0x04000002L, 0x04000800L, 0x00000800L, 0x00200002L };
|
|---|
| 1044 |
|
|---|
| 1045 | static uint32_t SP8[64] = {
|
|---|
| 1046 | 0x10001040L, 0x00001000L, 0x00040000L, 0x10041040L,
|
|---|
| 1047 | 0x10000000L, 0x10001040L, 0x00000040L, 0x10000000L,
|
|---|
| 1048 | 0x00040040L, 0x10040000L, 0x10041040L, 0x00041000L,
|
|---|
| 1049 | 0x10041000L, 0x00041040L, 0x00001000L, 0x00000040L,
|
|---|
| 1050 | 0x10040000L, 0x10000040L, 0x10001000L, 0x00001040L,
|
|---|
| 1051 | 0x00041000L, 0x00040040L, 0x10040040L, 0x10041000L,
|
|---|
| 1052 | 0x00001040L, 0x00000000L, 0x00000000L, 0x10040040L,
|
|---|
| 1053 | 0x10000040L, 0x10001000L, 0x00041040L, 0x00040000L,
|
|---|
| 1054 | 0x00041040L, 0x00040000L, 0x10041000L, 0x00001000L,
|
|---|
| 1055 | 0x00000040L, 0x10040040L, 0x00001000L, 0x00041040L,
|
|---|
| 1056 | 0x10001000L, 0x00000040L, 0x10000040L, 0x10040000L,
|
|---|
| 1057 | 0x10040040L, 0x10000000L, 0x00040000L, 0x10001040L,
|
|---|
| 1058 | 0x00000000L, 0x10041040L, 0x00040040L, 0x10000040L,
|
|---|
| 1059 | 0x10040000L, 0x10001000L, 0x10001040L, 0x00000000L,
|
|---|
| 1060 | 0x10041040L, 0x00041000L, 0x00041000L, 0x00001040L,
|
|---|
| 1061 | 0x00001040L, 0x00040040L, 0x10000000L, 0x10041000L };
|
|---|
| 1062 |
|
|---|
| 1063 | static void
|
|---|
| 1064 | IP(uint32_t v[2])
|
|---|
| 1065 | {
|
|---|
| 1066 | uint32_t work;
|
|---|
| 1067 |
|
|---|
| 1068 | work = ((v[0] >> 4) ^ v[1]) & 0x0f0f0f0fL;
|
|---|
| 1069 | v[1] ^= work;
|
|---|
| 1070 | v[0] ^= (work << 4);
|
|---|
| 1071 | work = ((v[0] >> 16) ^ v[1]) & 0x0000ffffL;
|
|---|
| 1072 | v[1] ^= work;
|
|---|
| 1073 | v[0] ^= (work << 16);
|
|---|
| 1074 | work = ((v[1] >> 2) ^ v[0]) & 0x33333333L;
|
|---|
| 1075 | v[0] ^= work;
|
|---|
| 1076 | v[1] ^= (work << 2);
|
|---|
| 1077 | work = ((v[1] >> 8) ^ v[0]) & 0x00ff00ffL;
|
|---|
| 1078 | v[0] ^= work;
|
|---|
| 1079 | v[1] ^= (work << 8);
|
|---|
| 1080 | v[1] = ((v[1] << 1) | ((v[1] >> 31) & 1L)) & 0xffffffffL;
|
|---|
| 1081 | work = (v[0] ^ v[1]) & 0xaaaaaaaaL;
|
|---|
| 1082 | v[0] ^= work;
|
|---|
| 1083 | v[1] ^= work;
|
|---|
| 1084 | v[0] = ((v[0] << 1) | ((v[0] >> 31) & 1L)) & 0xffffffffL;
|
|---|
| 1085 | }
|
|---|
| 1086 |
|
|---|
| 1087 | static void
|
|---|
| 1088 | FP(uint32_t v[2])
|
|---|
| 1089 | {
|
|---|
| 1090 | uint32_t work;
|
|---|
| 1091 |
|
|---|
| 1092 | v[0] = (v[0] << 31) | (v[0] >> 1);
|
|---|
| 1093 | work = (v[1] ^ v[0]) & 0xaaaaaaaaL;
|
|---|
| 1094 | v[1] ^= work;
|
|---|
| 1095 | v[0] ^= work;
|
|---|
| 1096 | v[1] = (v[1] << 31) | (v[1] >> 1);
|
|---|
| 1097 | work = ((v[1] >> 8) ^ v[0]) & 0x00ff00ffL;
|
|---|
| 1098 | v[0] ^= work;
|
|---|
| 1099 | v[1] ^= (work << 8);
|
|---|
| 1100 | work = ((v[1] >> 2) ^ v[0]) & 0x33333333L;
|
|---|
| 1101 | v[0] ^= work;
|
|---|
| 1102 | v[1] ^= (work << 2);
|
|---|
| 1103 | work = ((v[0] >> 16) ^ v[1]) & 0x0000ffffL;
|
|---|
| 1104 | v[1] ^= work;
|
|---|
| 1105 | v[0] ^= (work << 16);
|
|---|
| 1106 | work = ((v[0] >> 4) ^ v[1]) & 0x0f0f0f0fL;
|
|---|
| 1107 | v[1] ^= work;
|
|---|
| 1108 | v[0] ^= (work << 4);
|
|---|
| 1109 | }
|
|---|
| 1110 |
|
|---|
| 1111 | static void
|
|---|
| 1112 | desx(uint32_t block[2], DES_key_schedule *ks, int encp)
|
|---|
| 1113 | {
|
|---|
| 1114 | uint32_t *keys;
|
|---|
| 1115 | uint32_t fval, work, right, left;
|
|---|
| 1116 | int round;
|
|---|
| 1117 |
|
|---|
| 1118 | left = block[0];
|
|---|
| 1119 | right = block[1];
|
|---|
| 1120 |
|
|---|
| 1121 | if (encp) {
|
|---|
| 1122 | keys = &ks->ks[0];
|
|---|
| 1123 |
|
|---|
| 1124 | for( round = 0; round < 8; round++ ) {
|
|---|
| 1125 | work = (right << 28) | (right >> 4);
|
|---|
| 1126 | work ^= *keys++;
|
|---|
| 1127 | fval = SP7[ work & 0x3fL];
|
|---|
| 1128 | fval |= SP5[(work >> 8) & 0x3fL];
|
|---|
| 1129 | fval |= SP3[(work >> 16) & 0x3fL];
|
|---|
| 1130 | fval |= SP1[(work >> 24) & 0x3fL];
|
|---|
| 1131 | work = right ^ *keys++;
|
|---|
| 1132 | fval |= SP8[ work & 0x3fL];
|
|---|
| 1133 | fval |= SP6[(work >> 8) & 0x3fL];
|
|---|
| 1134 | fval |= SP4[(work >> 16) & 0x3fL];
|
|---|
| 1135 | fval |= SP2[(work >> 24) & 0x3fL];
|
|---|
| 1136 | left ^= fval;
|
|---|
| 1137 | work = (left << 28) | (left >> 4);
|
|---|
| 1138 | work ^= *keys++;
|
|---|
| 1139 | fval = SP7[ work & 0x3fL];
|
|---|
| 1140 | fval |= SP5[(work >> 8) & 0x3fL];
|
|---|
| 1141 | fval |= SP3[(work >> 16) & 0x3fL];
|
|---|
| 1142 | fval |= SP1[(work >> 24) & 0x3fL];
|
|---|
| 1143 | work = left ^ *keys++;
|
|---|
| 1144 | fval |= SP8[ work & 0x3fL];
|
|---|
| 1145 | fval |= SP6[(work >> 8) & 0x3fL];
|
|---|
| 1146 | fval |= SP4[(work >> 16) & 0x3fL];
|
|---|
| 1147 | fval |= SP2[(work >> 24) & 0x3fL];
|
|---|
| 1148 | right ^= fval;
|
|---|
| 1149 | }
|
|---|
| 1150 | } else {
|
|---|
| 1151 | keys = &ks->ks[30];
|
|---|
| 1152 |
|
|---|
| 1153 | for( round = 0; round < 8; round++ ) {
|
|---|
| 1154 | work = (right << 28) | (right >> 4);
|
|---|
| 1155 | work ^= *keys++;
|
|---|
| 1156 | fval = SP7[ work & 0x3fL];
|
|---|
| 1157 | fval |= SP5[(work >> 8) & 0x3fL];
|
|---|
| 1158 | fval |= SP3[(work >> 16) & 0x3fL];
|
|---|
| 1159 | fval |= SP1[(work >> 24) & 0x3fL];
|
|---|
| 1160 | work = right ^ *keys++;
|
|---|
| 1161 | fval |= SP8[ work & 0x3fL];
|
|---|
| 1162 | fval |= SP6[(work >> 8) & 0x3fL];
|
|---|
| 1163 | fval |= SP4[(work >> 16) & 0x3fL];
|
|---|
| 1164 | fval |= SP2[(work >> 24) & 0x3fL];
|
|---|
| 1165 | left ^= fval;
|
|---|
| 1166 | work = (left << 28) | (left >> 4);
|
|---|
| 1167 | keys -= 4;
|
|---|
| 1168 | work ^= *keys++;
|
|---|
| 1169 | fval = SP7[ work & 0x3fL];
|
|---|
| 1170 | fval |= SP5[(work >> 8) & 0x3fL];
|
|---|
| 1171 | fval |= SP3[(work >> 16) & 0x3fL];
|
|---|
| 1172 | fval |= SP1[(work >> 24) & 0x3fL];
|
|---|
| 1173 | work = left ^ *keys++;
|
|---|
| 1174 | fval |= SP8[ work & 0x3fL];
|
|---|
| 1175 | fval |= SP6[(work >> 8) & 0x3fL];
|
|---|
| 1176 | fval |= SP4[(work >> 16) & 0x3fL];
|
|---|
| 1177 | fval |= SP2[(work >> 24) & 0x3fL];
|
|---|
| 1178 | right ^= fval;
|
|---|
| 1179 | keys -= 4;
|
|---|
| 1180 | }
|
|---|
| 1181 | }
|
|---|
| 1182 | block[0] = right;
|
|---|
| 1183 | block[1] = left;
|
|---|
| 1184 | }
|
|---|
