[352] | 1 | /*
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| 2 | * This version has been further modified by Rich Felker, primary author
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| 3 | * and maintainer of musl libc, to remove table generation code and
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| 4 | * replaced all runtime-generated constant tables with static-initialized
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| 5 | * tables in the binary, in the interest of minimizing non-shareable
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| 6 | * memory usage and stack size requirements.
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| 7 | */
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| 8 | /*
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| 9 | * This version is derived from the original implementation of FreeSec
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| 10 | * (release 1.1) by David Burren. I've made it reentrant, reduced its memory
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| 11 | * usage from about 70 KB to about 7 KB (with only minimal performance impact
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| 12 | * and keeping code size about the same), made the handling of invalid salts
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| 13 | * mostly UFC-crypt compatible, added a quick runtime self-test (which also
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| 14 | * serves to zeroize the stack from sensitive data), and added optional tests.
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| 15 | * - Solar Designer <solar at openwall.com>
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| 16 | */
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| 17 |
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| 18 | /*
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| 19 | * FreeSec: libcrypt for NetBSD
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| 20 | *
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| 21 | * Copyright (c) 1994 David Burren
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| 22 | * Copyright (c) 2000,2002,2010,2012 Solar Designer
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| 23 | * All rights reserved.
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| 24 | *
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| 25 | * Redistribution and use in source and binary forms, with or without
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| 26 | * modification, are permitted provided that the following conditions
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| 27 | * are met:
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| 28 | * 1. Redistributions of source code must retain the above copyright
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| 29 | * notice, this list of conditions and the following disclaimer.
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| 30 | * 2. Redistributions in binary form must reproduce the above copyright
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| 31 | * notice, this list of conditions and the following disclaimer in the
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| 32 | * documentation and/or other materials provided with the distribution.
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| 33 | * 3. Neither the name of the author nor the names of other contributors
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| 34 | * may be used to endorse or promote products derived from this software
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| 35 | * without specific prior written permission.
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| 36 | *
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| 37 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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| 38 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 39 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 40 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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| 41 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 42 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 43 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 44 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 45 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 46 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 47 | * SUCH DAMAGE.
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| 48 | *
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| 49 | * $Owl: Owl/packages/glibc/crypt_freesec.c,v 1.6 2010/02/20 14:45:06 solar Exp $
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| 50 | * $Id$
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| 51 | *
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| 52 | * This is an original implementation of the DES and the crypt(3) interfaces
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| 53 | * by David Burren. It has been heavily re-worked by Solar Designer.
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| 54 | */
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| 55 |
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| 56 | #include <stdint.h>
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| 57 | #include <string.h>
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| 58 |
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| 59 | struct expanded_key {
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| 60 | uint32_t l[16], r[16];
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| 61 | };
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| 62 |
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| 63 | #define _PASSWORD_EFMT1 '_'
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| 64 |
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| 65 | static const unsigned char key_shifts[16] = {
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| 66 | 1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1
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| 67 | };
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| 68 |
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| 69 | static const uint32_t psbox[8][64] = {
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| 70 | {
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| 71 | 0x00808200,0x00000000,0x00008000,0x00808202,
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| 72 | 0x00808002,0x00008202,0x00000002,0x00008000,
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| 73 | 0x00000200,0x00808200,0x00808202,0x00000200,
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| 74 | 0x00800202,0x00808002,0x00800000,0x00000002,
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| 75 | 0x00000202,0x00800200,0x00800200,0x00008200,
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| 76 | 0x00008200,0x00808000,0x00808000,0x00800202,
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| 77 | 0x00008002,0x00800002,0x00800002,0x00008002,
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| 78 | 0x00000000,0x00000202,0x00008202,0x00800000,
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| 79 | 0x00008000,0x00808202,0x00000002,0x00808000,
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| 80 | 0x00808200,0x00800000,0x00800000,0x00000200,
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| 81 | 0x00808002,0x00008000,0x00008200,0x00800002,
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| 82 | 0x00000200,0x00000002,0x00800202,0x00008202,
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| 83 | 0x00808202,0x00008002,0x00808000,0x00800202,
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| 84 | 0x00800002,0x00000202,0x00008202,0x00808200,
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| 85 | 0x00000202,0x00800200,0x00800200,0x00000000,
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| 86 | 0x00008002,0x00008200,0x00000000,0x00808002,
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| 87 | },{
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| 88 | 0x40084010,0x40004000,0x00004000,0x00084010,
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| 89 | 0x00080000,0x00000010,0x40080010,0x40004010,
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| 90 | 0x40000010,0x40084010,0x40084000,0x40000000,
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| 91 | 0x40004000,0x00080000,0x00000010,0x40080010,
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| 92 | 0x00084000,0x00080010,0x40004010,0x00000000,
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| 93 | 0x40000000,0x00004000,0x00084010,0x40080000,
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| 94 | 0x00080010,0x40000010,0x00000000,0x00084000,
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| 95 | 0x00004010,0x40084000,0x40080000,0x00004010,
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| 96 | 0x00000000,0x00084010,0x40080010,0x00080000,
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| 97 | 0x40004010,0x40080000,0x40084000,0x00004000,
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| 98 | 0x40080000,0x40004000,0x00000010,0x40084010,
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| 99 | 0x00084010,0x00000010,0x00004000,0x40000000,
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| 100 | 0x00004010,0x40084000,0x00080000,0x40000010,
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| 101 | 0x00080010,0x40004010,0x40000010,0x00080010,
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| 102 | 0x00084000,0x00000000,0x40004000,0x00004010,
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| 103 | 0x40000000,0x40080010,0x40084010,0x00084000,
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| 104 | },{
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| 105 | 0x00000104,0x04010100,0x00000000,0x04010004,
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| 106 | 0x04000100,0x00000000,0x00010104,0x04000100,
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| 107 | 0x00010004,0x04000004,0x04000004,0x00010000,
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| 108 | 0x04010104,0x00010004,0x04010000,0x00000104,
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| 109 | 0x04000000,0x00000004,0x04010100,0x00000100,
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| 110 | 0x00010100,0x04010000,0x04010004,0x00010104,
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| 111 | 0x04000104,0x00010100,0x00010000,0x04000104,
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| 112 | 0x00000004,0x04010104,0x00000100,0x04000000,
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| 113 | 0x04010100,0x04000000,0x00010004,0x00000104,
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| 114 | 0x00010000,0x04010100,0x04000100,0x00000000,
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| 115 | 0x00000100,0x00010004,0x04010104,0x04000100,
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| 116 | 0x04000004,0x00000100,0x00000000,0x04010004,
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| 117 | 0x04000104,0x00010000,0x04000000,0x04010104,
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| 118 | 0x00000004,0x00010104,0x00010100,0x04000004,
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| 119 | 0x04010000,0x04000104,0x00000104,0x04010000,
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| 120 | 0x00010104,0x00000004,0x04010004,0x00010100,
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| 121 | },{
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| 122 | 0x80401000,0x80001040,0x80001040,0x00000040,
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| 123 | 0x00401040,0x80400040,0x80400000,0x80001000,
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| 124 | 0x00000000,0x00401000,0x00401000,0x80401040,
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| 125 | 0x80000040,0x00000000,0x00400040,0x80400000,
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| 126 | 0x80000000,0x00001000,0x00400000,0x80401000,
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| 127 | 0x00000040,0x00400000,0x80001000,0x00001040,
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| 128 | 0x80400040,0x80000000,0x00001040,0x00400040,
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| 129 | 0x00001000,0x00401040,0x80401040,0x80000040,
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| 130 | 0x00400040,0x80400000,0x00401000,0x80401040,
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| 131 | 0x80000040,0x00000000,0x00000000,0x00401000,
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| 132 | 0x00001040,0x00400040,0x80400040,0x80000000,
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| 133 | 0x80401000,0x80001040,0x80001040,0x00000040,
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| 134 | 0x80401040,0x80000040,0x80000000,0x00001000,
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| 135 | 0x80400000,0x80001000,0x00401040,0x80400040,
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| 136 | 0x80001000,0x00001040,0x00400000,0x80401000,
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| 137 | 0x00000040,0x00400000,0x00001000,0x00401040,
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| 138 | },{
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| 139 | 0x00000080,0x01040080,0x01040000,0x21000080,
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| 140 | 0x00040000,0x00000080,0x20000000,0x01040000,
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| 141 | 0x20040080,0x00040000,0x01000080,0x20040080,
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| 142 | 0x21000080,0x21040000,0x00040080,0x20000000,
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| 143 | 0x01000000,0x20040000,0x20040000,0x00000000,
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| 144 | 0x20000080,0x21040080,0x21040080,0x01000080,
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| 145 | 0x21040000,0x20000080,0x00000000,0x21000000,
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| 146 | 0x01040080,0x01000000,0x21000000,0x00040080,
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| 147 | 0x00040000,0x21000080,0x00000080,0x01000000,
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| 148 | 0x20000000,0x01040000,0x21000080,0x20040080,
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| 149 | 0x01000080,0x20000000,0x21040000,0x01040080,
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| 150 | 0x20040080,0x00000080,0x01000000,0x21040000,
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| 151 | 0x21040080,0x00040080,0x21000000,0x21040080,
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| 152 | 0x01040000,0x00000000,0x20040000,0x21000000,
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| 153 | 0x00040080,0x01000080,0x20000080,0x00040000,
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| 154 | 0x00000000,0x20040000,0x01040080,0x20000080,
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| 155 | },{
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| 156 | 0x10000008,0x10200000,0x00002000,0x10202008,
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| 157 | 0x10200000,0x00000008,0x10202008,0x00200000,
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| 158 | 0x10002000,0x00202008,0x00200000,0x10000008,
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| 159 | 0x00200008,0x10002000,0x10000000,0x00002008,
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| 160 | 0x00000000,0x00200008,0x10002008,0x00002000,
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| 161 | 0x00202000,0x10002008,0x00000008,0x10200008,
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| 162 | 0x10200008,0x00000000,0x00202008,0x10202000,
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| 163 | 0x00002008,0x00202000,0x10202000,0x10000000,
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| 164 | 0x10002000,0x00000008,0x10200008,0x00202000,
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| 165 | 0x10202008,0x00200000,0x00002008,0x10000008,
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| 166 | 0x00200000,0x10002000,0x10000000,0x00002008,
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| 167 | 0x10000008,0x10202008,0x00202000,0x10200000,
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| 168 | 0x00202008,0x10202000,0x00000000,0x10200008,
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| 169 | 0x00000008,0x00002000,0x10200000,0x00202008,
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| 170 | 0x00002000,0x00200008,0x10002008,0x00000000,
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| 171 | 0x10202000,0x10000000,0x00200008,0x10002008,
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| 172 | },{
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| 173 | 0x00100000,0x02100001,0x02000401,0x00000000,
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| 174 | 0x00000400,0x02000401,0x00100401,0x02100400,
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| 175 | 0x02100401,0x00100000,0x00000000,0x02000001,
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| 176 | 0x00000001,0x02000000,0x02100001,0x00000401,
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| 177 | 0x02000400,0x00100401,0x00100001,0x02000400,
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| 178 | 0x02000001,0x02100000,0x02100400,0x00100001,
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| 179 | 0x02100000,0x00000400,0x00000401,0x02100401,
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| 180 | 0x00100400,0x00000001,0x02000000,0x00100400,
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| 181 | 0x02000000,0x00100400,0x00100000,0x02000401,
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| 182 | 0x02000401,0x02100001,0x02100001,0x00000001,
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| 183 | 0x00100001,0x02000000,0x02000400,0x00100000,
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| 184 | 0x02100400,0x00000401,0x00100401,0x02100400,
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| 185 | 0x00000401,0x02000001,0x02100401,0x02100000,
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| 186 | 0x00100400,0x00000000,0x00000001,0x02100401,
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| 187 | 0x00000000,0x00100401,0x02100000,0x00000400,
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| 188 | 0x02000001,0x02000400,0x00000400,0x00100001,
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| 189 | },{
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| 190 | 0x08000820,0x00000800,0x00020000,0x08020820,
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| 191 | 0x08000000,0x08000820,0x00000020,0x08000000,
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| 192 | 0x00020020,0x08020000,0x08020820,0x00020800,
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| 193 | 0x08020800,0x00020820,0x00000800,0x00000020,
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| 194 | 0x08020000,0x08000020,0x08000800,0x00000820,
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| 195 | 0x00020800,0x00020020,0x08020020,0x08020800,
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| 196 | 0x00000820,0x00000000,0x00000000,0x08020020,
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| 197 | 0x08000020,0x08000800,0x00020820,0x00020000,
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| 198 | 0x00020820,0x00020000,0x08020800,0x00000800,
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| 199 | 0x00000020,0x08020020,0x00000800,0x00020820,
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| 200 | 0x08000800,0x00000020,0x08000020,0x08020000,
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| 201 | 0x08020020,0x08000000,0x00020000,0x08000820,
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| 202 | 0x00000000,0x08020820,0x00020020,0x08000020,
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| 203 | 0x08020000,0x08000800,0x08000820,0x00000000,
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| 204 | 0x08020820,0x00020800,0x00020800,0x00000820,
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| 205 | 0x00000820,0x00020020,0x08000000,0x08020800,
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| 206 | },
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| 207 | };
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| 208 | static const uint32_t ip_maskl[16][16] = {
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| 209 | {
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| 210 | 0x00000000,0x00010000,0x00000000,0x00010000,
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| 211 | 0x01000000,0x01010000,0x01000000,0x01010000,
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| 212 | 0x00000000,0x00010000,0x00000000,0x00010000,
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| 213 | 0x01000000,0x01010000,0x01000000,0x01010000,
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| 214 | },{
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| 215 | 0x00000000,0x00000001,0x00000000,0x00000001,
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| 216 | 0x00000100,0x00000101,0x00000100,0x00000101,
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| 217 | 0x00000000,0x00000001,0x00000000,0x00000001,
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| 218 | 0x00000100,0x00000101,0x00000100,0x00000101,
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| 219 | },{
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| 220 | 0x00000000,0x00020000,0x00000000,0x00020000,
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| 221 | 0x02000000,0x02020000,0x02000000,0x02020000,
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| 222 | 0x00000000,0x00020000,0x00000000,0x00020000,
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| 223 | 0x02000000,0x02020000,0x02000000,0x02020000,
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| 224 | },{
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| 225 | 0x00000000,0x00000002,0x00000000,0x00000002,
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| 226 | 0x00000200,0x00000202,0x00000200,0x00000202,
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| 227 | 0x00000000,0x00000002,0x00000000,0x00000002,
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| 228 | 0x00000200,0x00000202,0x00000200,0x00000202,
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| 229 | },{
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| 230 | 0x00000000,0x00040000,0x00000000,0x00040000,
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| 231 | 0x04000000,0x04040000,0x04000000,0x04040000,
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| 232 | 0x00000000,0x00040000,0x00000000,0x00040000,
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| 233 | 0x04000000,0x04040000,0x04000000,0x04040000,
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| 234 | },{
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| 235 | 0x00000000,0x00000004,0x00000000,0x00000004,
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| 236 | 0x00000400,0x00000404,0x00000400,0x00000404,
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| 237 | 0x00000000,0x00000004,0x00000000,0x00000004,
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| 238 | 0x00000400,0x00000404,0x00000400,0x00000404,
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| 239 | },{
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| 240 | 0x00000000,0x00080000,0x00000000,0x00080000,
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| 241 | 0x08000000,0x08080000,0x08000000,0x08080000,
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| 242 | 0x00000000,0x00080000,0x00000000,0x00080000,
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| 243 | 0x08000000,0x08080000,0x08000000,0x08080000,
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| 244 | },{
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| 245 | 0x00000000,0x00000008,0x00000000,0x00000008,
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| 246 | 0x00000800,0x00000808,0x00000800,0x00000808,
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| 247 | 0x00000000,0x00000008,0x00000000,0x00000008,
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| 248 | 0x00000800,0x00000808,0x00000800,0x00000808,
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| 249 | },{
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| 250 | 0x00000000,0x00100000,0x00000000,0x00100000,
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| 251 | 0x10000000,0x10100000,0x10000000,0x10100000,
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| 252 | 0x00000000,0x00100000,0x00000000,0x00100000,
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| 253 | 0x10000000,0x10100000,0x10000000,0x10100000,
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| 254 | },{
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| 255 | 0x00000000,0x00000010,0x00000000,0x00000010,
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| 256 | 0x00001000,0x00001010,0x00001000,0x00001010,
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| 257 | 0x00000000,0x00000010,0x00000000,0x00000010,
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| 258 | 0x00001000,0x00001010,0x00001000,0x00001010,
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| 259 | },{
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| 260 | 0x00000000,0x00200000,0x00000000,0x00200000,
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| 261 | 0x20000000,0x20200000,0x20000000,0x20200000,
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| 262 | 0x00000000,0x00200000,0x00000000,0x00200000,
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| 263 | 0x20000000,0x20200000,0x20000000,0x20200000,
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| 264 | },{
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| 265 | 0x00000000,0x00000020,0x00000000,0x00000020,
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| 266 | 0x00002000,0x00002020,0x00002000,0x00002020,
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| 267 | 0x00000000,0x00000020,0x00000000,0x00000020,
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| 268 | 0x00002000,0x00002020,0x00002000,0x00002020,
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| 269 | },{
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| 270 | 0x00000000,0x00400000,0x00000000,0x00400000,
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| 271 | 0x40000000,0x40400000,0x40000000,0x40400000,
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| 272 | 0x00000000,0x00400000,0x00000000,0x00400000,
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| 273 | 0x40000000,0x40400000,0x40000000,0x40400000,
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| 274 | },{
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| 275 | 0x00000000,0x00000040,0x00000000,0x00000040,
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| 276 | 0x00004000,0x00004040,0x00004000,0x00004040,
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| 277 | 0x00000000,0x00000040,0x00000000,0x00000040,
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| 278 | 0x00004000,0x00004040,0x00004000,0x00004040,
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| 279 | },{
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| 280 | 0x00000000,0x00800000,0x00000000,0x00800000,
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| 281 | 0x80000000,0x80800000,0x80000000,0x80800000,
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| 282 | 0x00000000,0x00800000,0x00000000,0x00800000,
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| 283 | 0x80000000,0x80800000,0x80000000,0x80800000,
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| 284 | },{
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| 285 | 0x00000000,0x00000080,0x00000000,0x00000080,
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| 286 | 0x00008000,0x00008080,0x00008000,0x00008080,
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| 287 | 0x00000000,0x00000080,0x00000000,0x00000080,
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| 288 | 0x00008000,0x00008080,0x00008000,0x00008080,
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| 289 | },
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| 290 | };
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| 291 | static const uint32_t ip_maskr[16][16] = {
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| 292 | {
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| 293 | 0x00000000,0x00000000,0x00010000,0x00010000,
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| 294 | 0x00000000,0x00000000,0x00010000,0x00010000,
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| 295 | 0x01000000,0x01000000,0x01010000,0x01010000,
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| 296 | 0x01000000,0x01000000,0x01010000,0x01010000,
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| 297 | },{
|
---|
| 298 | 0x00000000,0x00000000,0x00000001,0x00000001,
|
---|
| 299 | 0x00000000,0x00000000,0x00000001,0x00000001,
|
---|
| 300 | 0x00000100,0x00000100,0x00000101,0x00000101,
|
---|
| 301 | 0x00000100,0x00000100,0x00000101,0x00000101,
|
---|
| 302 | },{
|
---|
| 303 | 0x00000000,0x00000000,0x00020000,0x00020000,
|
---|
| 304 | 0x00000000,0x00000000,0x00020000,0x00020000,
|
---|
| 305 | 0x02000000,0x02000000,0x02020000,0x02020000,
|
---|
| 306 | 0x02000000,0x02000000,0x02020000,0x02020000,
|
---|
| 307 | },{
|
---|
| 308 | 0x00000000,0x00000000,0x00000002,0x00000002,
|
---|
| 309 | 0x00000000,0x00000000,0x00000002,0x00000002,
|
---|
| 310 | 0x00000200,0x00000200,0x00000202,0x00000202,
|
---|
| 311 | 0x00000200,0x00000200,0x00000202,0x00000202,
|
---|
| 312 | },{
|
---|
| 313 | 0x00000000,0x00000000,0x00040000,0x00040000,
|
---|
| 314 | 0x00000000,0x00000000,0x00040000,0x00040000,
|
---|
| 315 | 0x04000000,0x04000000,0x04040000,0x04040000,
|
---|
| 316 | 0x04000000,0x04000000,0x04040000,0x04040000,
|
---|
| 317 | },{
|
---|
| 318 | 0x00000000,0x00000000,0x00000004,0x00000004,
|
---|
| 319 | 0x00000000,0x00000000,0x00000004,0x00000004,
|
---|
| 320 | 0x00000400,0x00000400,0x00000404,0x00000404,
|
---|
| 321 | 0x00000400,0x00000400,0x00000404,0x00000404,
|
---|
| 322 | },{
|
---|
| 323 | 0x00000000,0x00000000,0x00080000,0x00080000,
|
---|
| 324 | 0x00000000,0x00000000,0x00080000,0x00080000,
|
---|
| 325 | 0x08000000,0x08000000,0x08080000,0x08080000,
|
---|
| 326 | 0x08000000,0x08000000,0x08080000,0x08080000,
|
---|
| 327 | },{
|
---|
| 328 | 0x00000000,0x00000000,0x00000008,0x00000008,
|
---|
| 329 | 0x00000000,0x00000000,0x00000008,0x00000008,
|
---|
| 330 | 0x00000800,0x00000800,0x00000808,0x00000808,
|
---|
| 331 | 0x00000800,0x00000800,0x00000808,0x00000808,
|
---|
| 332 | },{
|
---|
| 333 | 0x00000000,0x00000000,0x00100000,0x00100000,
|
---|
| 334 | 0x00000000,0x00000000,0x00100000,0x00100000,
|
---|
| 335 | 0x10000000,0x10000000,0x10100000,0x10100000,
|
---|
| 336 | 0x10000000,0x10000000,0x10100000,0x10100000,
|
---|
| 337 | },{
|
---|
| 338 | 0x00000000,0x00000000,0x00000010,0x00000010,
|
---|
| 339 | 0x00000000,0x00000000,0x00000010,0x00000010,
|
---|
| 340 | 0x00001000,0x00001000,0x00001010,0x00001010,
|
---|
| 341 | 0x00001000,0x00001000,0x00001010,0x00001010,
|
---|
| 342 | },{
|
---|
| 343 | 0x00000000,0x00000000,0x00200000,0x00200000,
|
---|
| 344 | 0x00000000,0x00000000,0x00200000,0x00200000,
|
---|
| 345 | 0x20000000,0x20000000,0x20200000,0x20200000,
|
---|
| 346 | 0x20000000,0x20000000,0x20200000,0x20200000,
|
---|
| 347 | },{
|
---|
| 348 | 0x00000000,0x00000000,0x00000020,0x00000020,
|
---|
| 349 | 0x00000000,0x00000000,0x00000020,0x00000020,
|
---|
| 350 | 0x00002000,0x00002000,0x00002020,0x00002020,
|
---|
| 351 | 0x00002000,0x00002000,0x00002020,0x00002020,
|
---|
| 352 | },{
|
---|
| 353 | 0x00000000,0x00000000,0x00400000,0x00400000,
|
---|
| 354 | 0x00000000,0x00000000,0x00400000,0x00400000,
|
---|
| 355 | 0x40000000,0x40000000,0x40400000,0x40400000,
|
---|
| 356 | 0x40000000,0x40000000,0x40400000,0x40400000,
|
---|
| 357 | },{
|
---|
| 358 | 0x00000000,0x00000000,0x00000040,0x00000040,
|
---|
| 359 | 0x00000000,0x00000000,0x00000040,0x00000040,
|
---|
| 360 | 0x00004000,0x00004000,0x00004040,0x00004040,
|
---|
| 361 | 0x00004000,0x00004000,0x00004040,0x00004040,
|
---|
| 362 | },{
|
---|
| 363 | 0x00000000,0x00000000,0x00800000,0x00800000,
|
---|
| 364 | 0x00000000,0x00000000,0x00800000,0x00800000,
|
---|
| 365 | 0x80000000,0x80000000,0x80800000,0x80800000,
|
---|
| 366 | 0x80000000,0x80000000,0x80800000,0x80800000,
|
---|
| 367 | },{
|
---|
| 368 | 0x00000000,0x00000000,0x00000080,0x00000080,
|
---|
| 369 | 0x00000000,0x00000000,0x00000080,0x00000080,
|
---|
| 370 | 0x00008000,0x00008000,0x00008080,0x00008080,
|
---|
| 371 | 0x00008000,0x00008000,0x00008080,0x00008080,
|
---|
| 372 | },
|
---|
| 373 | };
|
---|
| 374 | static const uint32_t fp_maskl[8][16] = {
|
---|
| 375 | {
|
---|
| 376 | 0x00000000,0x40000000,0x00400000,0x40400000,
|
---|
| 377 | 0x00004000,0x40004000,0x00404000,0x40404000,
|
---|
| 378 | 0x00000040,0x40000040,0x00400040,0x40400040,
|
---|
| 379 | 0x00004040,0x40004040,0x00404040,0x40404040,
|
---|
| 380 | },{
|
---|
| 381 | 0x00000000,0x10000000,0x00100000,0x10100000,
|
---|
| 382 | 0x00001000,0x10001000,0x00101000,0x10101000,
|
---|
| 383 | 0x00000010,0x10000010,0x00100010,0x10100010,
|
---|
| 384 | 0x00001010,0x10001010,0x00101010,0x10101010,
|
---|
| 385 | },{
|
---|
| 386 | 0x00000000,0x04000000,0x00040000,0x04040000,
|
---|
| 387 | 0x00000400,0x04000400,0x00040400,0x04040400,
|
---|
| 388 | 0x00000004,0x04000004,0x00040004,0x04040004,
|
---|
| 389 | 0x00000404,0x04000404,0x00040404,0x04040404,
|
---|
| 390 | },{
|
---|
| 391 | 0x00000000,0x01000000,0x00010000,0x01010000,
|
---|
| 392 | 0x00000100,0x01000100,0x00010100,0x01010100,
|
---|
| 393 | 0x00000001,0x01000001,0x00010001,0x01010001,
|
---|
| 394 | 0x00000101,0x01000101,0x00010101,0x01010101,
|
---|
| 395 | },{
|
---|
| 396 | 0x00000000,0x80000000,0x00800000,0x80800000,
|
---|
| 397 | 0x00008000,0x80008000,0x00808000,0x80808000,
|
---|
| 398 | 0x00000080,0x80000080,0x00800080,0x80800080,
|
---|
| 399 | 0x00008080,0x80008080,0x00808080,0x80808080,
|
---|
| 400 | },{
|
---|
| 401 | 0x00000000,0x20000000,0x00200000,0x20200000,
|
---|
| 402 | 0x00002000,0x20002000,0x00202000,0x20202000,
|
---|
| 403 | 0x00000020,0x20000020,0x00200020,0x20200020,
|
---|
| 404 | 0x00002020,0x20002020,0x00202020,0x20202020,
|
---|
| 405 | },{
|
---|
| 406 | 0x00000000,0x08000000,0x00080000,0x08080000,
|
---|
| 407 | 0x00000800,0x08000800,0x00080800,0x08080800,
|
---|
| 408 | 0x00000008,0x08000008,0x00080008,0x08080008,
|
---|
| 409 | 0x00000808,0x08000808,0x00080808,0x08080808,
|
---|
| 410 | },{
|
---|
| 411 | 0x00000000,0x02000000,0x00020000,0x02020000,
|
---|
| 412 | 0x00000200,0x02000200,0x00020200,0x02020200,
|
---|
| 413 | 0x00000002,0x02000002,0x00020002,0x02020002,
|
---|
| 414 | 0x00000202,0x02000202,0x00020202,0x02020202,
|
---|
| 415 | },
|
---|
| 416 | };
|
---|
| 417 | static const uint32_t fp_maskr[8][16] = {
|
---|
| 418 | {
|
---|
| 419 | 0x00000000,0x40000000,0x00400000,0x40400000,
|
---|
| 420 | 0x00004000,0x40004000,0x00404000,0x40404000,
|
---|
| 421 | 0x00000040,0x40000040,0x00400040,0x40400040,
|
---|
| 422 | 0x00004040,0x40004040,0x00404040,0x40404040,
|
---|
| 423 | },{
|
---|
| 424 | 0x00000000,0x10000000,0x00100000,0x10100000,
|
---|
| 425 | 0x00001000,0x10001000,0x00101000,0x10101000,
|
---|
| 426 | 0x00000010,0x10000010,0x00100010,0x10100010,
|
---|
| 427 | 0x00001010,0x10001010,0x00101010,0x10101010,
|
---|
| 428 | },{
|
---|
| 429 | 0x00000000,0x04000000,0x00040000,0x04040000,
|
---|
| 430 | 0x00000400,0x04000400,0x00040400,0x04040400,
|
---|
| 431 | 0x00000004,0x04000004,0x00040004,0x04040004,
|
---|
| 432 | 0x00000404,0x04000404,0x00040404,0x04040404,
|
---|
| 433 | },{
|
---|
| 434 | 0x00000000,0x01000000,0x00010000,0x01010000,
|
---|
| 435 | 0x00000100,0x01000100,0x00010100,0x01010100,
|
---|
| 436 | 0x00000001,0x01000001,0x00010001,0x01010001,
|
---|
| 437 | 0x00000101,0x01000101,0x00010101,0x01010101,
|
---|
| 438 | },{
|
---|
| 439 | 0x00000000,0x80000000,0x00800000,0x80800000,
|
---|
| 440 | 0x00008000,0x80008000,0x00808000,0x80808000,
|
---|
| 441 | 0x00000080,0x80000080,0x00800080,0x80800080,
|
---|
| 442 | 0x00008080,0x80008080,0x00808080,0x80808080,
|
---|
| 443 | },{
|
---|
| 444 | 0x00000000,0x20000000,0x00200000,0x20200000,
|
---|
| 445 | 0x00002000,0x20002000,0x00202000,0x20202000,
|
---|
| 446 | 0x00000020,0x20000020,0x00200020,0x20200020,
|
---|
| 447 | 0x00002020,0x20002020,0x00202020,0x20202020,
|
---|
| 448 | },{
|
---|
| 449 | 0x00000000,0x08000000,0x00080000,0x08080000,
|
---|
| 450 | 0x00000800,0x08000800,0x00080800,0x08080800,
|
---|
| 451 | 0x00000008,0x08000008,0x00080008,0x08080008,
|
---|
| 452 | 0x00000808,0x08000808,0x00080808,0x08080808,
|
---|
| 453 | },{
|
---|
| 454 | 0x00000000,0x02000000,0x00020000,0x02020000,
|
---|
| 455 | 0x00000200,0x02000200,0x00020200,0x02020200,
|
---|
| 456 | 0x00000002,0x02000002,0x00020002,0x02020002,
|
---|
| 457 | 0x00000202,0x02000202,0x00020202,0x02020202,
|
---|
| 458 | },
|
---|
| 459 | };
|
---|
| 460 | static const uint32_t key_perm_maskl[8][16] = {
|
---|
| 461 | {
|
---|
| 462 | 0x00000000,0x00000000,0x00000010,0x00000010,
|
---|
| 463 | 0x00001000,0x00001000,0x00001010,0x00001010,
|
---|
| 464 | 0x00100000,0x00100000,0x00100010,0x00100010,
|
---|
| 465 | 0x00101000,0x00101000,0x00101010,0x00101010,
|
---|
| 466 | },{
|
---|
| 467 | 0x00000000,0x00000000,0x00000020,0x00000020,
|
---|
| 468 | 0x00002000,0x00002000,0x00002020,0x00002020,
|
---|
| 469 | 0x00200000,0x00200000,0x00200020,0x00200020,
|
---|
| 470 | 0x00202000,0x00202000,0x00202020,0x00202020,
|
---|
| 471 | },{
|
---|
| 472 | 0x00000000,0x00000000,0x00000040,0x00000040,
|
---|
| 473 | 0x00004000,0x00004000,0x00004040,0x00004040,
|
---|
| 474 | 0x00400000,0x00400000,0x00400040,0x00400040,
|
---|
| 475 | 0x00404000,0x00404000,0x00404040,0x00404040,
|
---|
| 476 | },{
|
---|
| 477 | 0x00000000,0x00000000,0x00000080,0x00000080,
|
---|
| 478 | 0x00008000,0x00008000,0x00008080,0x00008080,
|
---|
| 479 | 0x00800000,0x00800000,0x00800080,0x00800080,
|
---|
| 480 | 0x00808000,0x00808000,0x00808080,0x00808080,
|
---|
| 481 | },{
|
---|
| 482 | 0x00000000,0x00000001,0x00000100,0x00000101,
|
---|
| 483 | 0x00010000,0x00010001,0x00010100,0x00010101,
|
---|
| 484 | 0x01000000,0x01000001,0x01000100,0x01000101,
|
---|
| 485 | 0x01010000,0x01010001,0x01010100,0x01010101,
|
---|
| 486 | },{
|
---|
| 487 | 0x00000000,0x00000002,0x00000200,0x00000202,
|
---|
| 488 | 0x00020000,0x00020002,0x00020200,0x00020202,
|
---|
| 489 | 0x02000000,0x02000002,0x02000200,0x02000202,
|
---|
| 490 | 0x02020000,0x02020002,0x02020200,0x02020202,
|
---|
| 491 | },{
|
---|
| 492 | 0x00000000,0x00000004,0x00000400,0x00000404,
|
---|
| 493 | 0x00040000,0x00040004,0x00040400,0x00040404,
|
---|
| 494 | 0x04000000,0x04000004,0x04000400,0x04000404,
|
---|
| 495 | 0x04040000,0x04040004,0x04040400,0x04040404,
|
---|
| 496 | },{
|
---|
| 497 | 0x00000000,0x00000008,0x00000800,0x00000808,
|
---|
| 498 | 0x00080000,0x00080008,0x00080800,0x00080808,
|
---|
| 499 | 0x08000000,0x08000008,0x08000800,0x08000808,
|
---|
| 500 | 0x08080000,0x08080008,0x08080800,0x08080808,
|
---|
| 501 | },
|
---|
| 502 | };
|
---|
| 503 | static const uint32_t key_perm_maskr[12][16] = {
|
---|
| 504 | {
|
---|
| 505 | 0x00000000,0x00000001,0x00000000,0x00000001,
|
---|
| 506 | 0x00000000,0x00000001,0x00000000,0x00000001,
|
---|
| 507 | 0x00000000,0x00000001,0x00000000,0x00000001,
|
---|
| 508 | 0x00000000,0x00000001,0x00000000,0x00000001,
|
---|
| 509 | },{
|
---|
| 510 | 0x00000000,0x00000000,0x00100000,0x00100000,
|
---|
| 511 | 0x00001000,0x00001000,0x00101000,0x00101000,
|
---|
| 512 | 0x00000010,0x00000010,0x00100010,0x00100010,
|
---|
| 513 | 0x00001010,0x00001010,0x00101010,0x00101010,
|
---|
| 514 | },{
|
---|
| 515 | 0x00000000,0x00000002,0x00000000,0x00000002,
|
---|
| 516 | 0x00000000,0x00000002,0x00000000,0x00000002,
|
---|
| 517 | 0x00000000,0x00000002,0x00000000,0x00000002,
|
---|
| 518 | 0x00000000,0x00000002,0x00000000,0x00000002,
|
---|
| 519 | },{
|
---|
| 520 | 0x00000000,0x00000000,0x00200000,0x00200000,
|
---|
| 521 | 0x00002000,0x00002000,0x00202000,0x00202000,
|
---|
| 522 | 0x00000020,0x00000020,0x00200020,0x00200020,
|
---|
| 523 | 0x00002020,0x00002020,0x00202020,0x00202020,
|
---|
| 524 | },{
|
---|
| 525 | 0x00000000,0x00000004,0x00000000,0x00000004,
|
---|
| 526 | 0x00000000,0x00000004,0x00000000,0x00000004,
|
---|
| 527 | 0x00000000,0x00000004,0x00000000,0x00000004,
|
---|
| 528 | 0x00000000,0x00000004,0x00000000,0x00000004,
|
---|
| 529 | },{
|
---|
| 530 | 0x00000000,0x00000000,0x00400000,0x00400000,
|
---|
| 531 | 0x00004000,0x00004000,0x00404000,0x00404000,
|
---|
| 532 | 0x00000040,0x00000040,0x00400040,0x00400040,
|
---|
| 533 | 0x00004040,0x00004040,0x00404040,0x00404040,
|
---|
| 534 | },{
|
---|
| 535 | 0x00000000,0x00000008,0x00000000,0x00000008,
|
---|
| 536 | 0x00000000,0x00000008,0x00000000,0x00000008,
|
---|
| 537 | 0x00000000,0x00000008,0x00000000,0x00000008,
|
---|
| 538 | 0x00000000,0x00000008,0x00000000,0x00000008,
|
---|
| 539 | },{
|
---|
| 540 | 0x00000000,0x00000000,0x00800000,0x00800000,
|
---|
| 541 | 0x00008000,0x00008000,0x00808000,0x00808000,
|
---|
| 542 | 0x00000080,0x00000080,0x00800080,0x00800080,
|
---|
| 543 | 0x00008080,0x00008080,0x00808080,0x00808080,
|
---|
| 544 | },{
|
---|
| 545 | 0x00000000,0x00000000,0x01000000,0x01000000,
|
---|
| 546 | 0x00010000,0x00010000,0x01010000,0x01010000,
|
---|
| 547 | 0x00000100,0x00000100,0x01000100,0x01000100,
|
---|
| 548 | 0x00010100,0x00010100,0x01010100,0x01010100,
|
---|
| 549 | },{
|
---|
| 550 | 0x00000000,0x00000000,0x02000000,0x02000000,
|
---|
| 551 | 0x00020000,0x00020000,0x02020000,0x02020000,
|
---|
| 552 | 0x00000200,0x00000200,0x02000200,0x02000200,
|
---|
| 553 | 0x00020200,0x00020200,0x02020200,0x02020200,
|
---|
| 554 | },{
|
---|
| 555 | 0x00000000,0x00000000,0x04000000,0x04000000,
|
---|
| 556 | 0x00040000,0x00040000,0x04040000,0x04040000,
|
---|
| 557 | 0x00000400,0x00000400,0x04000400,0x04000400,
|
---|
| 558 | 0x00040400,0x00040400,0x04040400,0x04040400,
|
---|
| 559 | },{
|
---|
| 560 | 0x00000000,0x00000000,0x08000000,0x08000000,
|
---|
| 561 | 0x00080000,0x00080000,0x08080000,0x08080000,
|
---|
| 562 | 0x00000800,0x00000800,0x08000800,0x08000800,
|
---|
| 563 | 0x00080800,0x00080800,0x08080800,0x08080800,
|
---|
| 564 | },
|
---|
| 565 | };
|
---|
| 566 | static const uint32_t comp_maskl0[4][8] = {
|
---|
| 567 | {
|
---|
| 568 | 0x00000000,0x00020000,0x00000001,0x00020001,
|
---|
| 569 | 0x00080000,0x000a0000,0x00080001,0x000a0001,
|
---|
| 570 | },{
|
---|
| 571 | 0x00000000,0x00001000,0x00000000,0x00001000,
|
---|
| 572 | 0x00000040,0x00001040,0x00000040,0x00001040,
|
---|
| 573 | },{
|
---|
| 574 | 0x00000000,0x00400000,0x00000020,0x00400020,
|
---|
| 575 | 0x00008000,0x00408000,0x00008020,0x00408020,
|
---|
| 576 | },{
|
---|
| 577 | 0x00000000,0x00100000,0x00000800,0x00100800,
|
---|
| 578 | 0x00000000,0x00100000,0x00000800,0x00100800,
|
---|
| 579 | },
|
---|
| 580 | };
|
---|
| 581 | static const uint32_t comp_maskr0[4][8] = {
|
---|
| 582 | {
|
---|
| 583 | 0x00000000,0x00200000,0x00020000,0x00220000,
|
---|
| 584 | 0x00000002,0x00200002,0x00020002,0x00220002,
|
---|
| 585 | },{
|
---|
| 586 | 0x00000000,0x00000000,0x00100000,0x00100000,
|
---|
| 587 | 0x00000004,0x00000004,0x00100004,0x00100004,
|
---|
| 588 | },{
|
---|
| 589 | 0x00000000,0x00004000,0x00000800,0x00004800,
|
---|
| 590 | 0x00000000,0x00004000,0x00000800,0x00004800,
|
---|
| 591 | },{
|
---|
| 592 | 0x00000000,0x00400000,0x00008000,0x00408000,
|
---|
| 593 | 0x00000008,0x00400008,0x00008008,0x00408008,
|
---|
| 594 | },
|
---|
| 595 | };
|
---|
| 596 | static const uint32_t comp_maskl1[4][16] = {
|
---|
| 597 | {
|
---|
| 598 | 0x00000000,0x00000010,0x00004000,0x00004010,
|
---|
| 599 | 0x00040000,0x00040010,0x00044000,0x00044010,
|
---|
| 600 | 0x00000100,0x00000110,0x00004100,0x00004110,
|
---|
| 601 | 0x00040100,0x00040110,0x00044100,0x00044110,
|
---|
| 602 | },{
|
---|
| 603 | 0x00000000,0x00800000,0x00000002,0x00800002,
|
---|
| 604 | 0x00000200,0x00800200,0x00000202,0x00800202,
|
---|
| 605 | 0x00200000,0x00a00000,0x00200002,0x00a00002,
|
---|
| 606 | 0x00200200,0x00a00200,0x00200202,0x00a00202,
|
---|
| 607 | },{
|
---|
| 608 | 0x00000000,0x00002000,0x00000004,0x00002004,
|
---|
| 609 | 0x00000400,0x00002400,0x00000404,0x00002404,
|
---|
| 610 | 0x00000000,0x00002000,0x00000004,0x00002004,
|
---|
| 611 | 0x00000400,0x00002400,0x00000404,0x00002404,
|
---|
| 612 | },{
|
---|
| 613 | 0x00000000,0x00010000,0x00000008,0x00010008,
|
---|
| 614 | 0x00000080,0x00010080,0x00000088,0x00010088,
|
---|
| 615 | 0x00000000,0x00010000,0x00000008,0x00010008,
|
---|
| 616 | 0x00000080,0x00010080,0x00000088,0x00010088,
|
---|
| 617 | },
|
---|
| 618 | };
|
---|
| 619 | static const uint32_t comp_maskr1[4][16] = {
|
---|
| 620 | {
|
---|
| 621 | 0x00000000,0x00000000,0x00000080,0x00000080,
|
---|
| 622 | 0x00002000,0x00002000,0x00002080,0x00002080,
|
---|
| 623 | 0x00000001,0x00000001,0x00000081,0x00000081,
|
---|
| 624 | 0x00002001,0x00002001,0x00002081,0x00002081,
|
---|
| 625 | },{
|
---|
| 626 | 0x00000000,0x00000010,0x00800000,0x00800010,
|
---|
| 627 | 0x00010000,0x00010010,0x00810000,0x00810010,
|
---|
| 628 | 0x00000200,0x00000210,0x00800200,0x00800210,
|
---|
| 629 | 0x00010200,0x00010210,0x00810200,0x00810210,
|
---|
| 630 | },{
|
---|
| 631 | 0x00000000,0x00000400,0x00001000,0x00001400,
|
---|
| 632 | 0x00080000,0x00080400,0x00081000,0x00081400,
|
---|
| 633 | 0x00000020,0x00000420,0x00001020,0x00001420,
|
---|
| 634 | 0x00080020,0x00080420,0x00081020,0x00081420,
|
---|
| 635 | },{
|
---|
| 636 | 0x00000000,0x00000100,0x00040000,0x00040100,
|
---|
| 637 | 0x00000000,0x00000100,0x00040000,0x00040100,
|
---|
| 638 | 0x00000040,0x00000140,0x00040040,0x00040140,
|
---|
| 639 | 0x00000040,0x00000140,0x00040040,0x00040140,
|
---|
| 640 | },
|
---|
| 641 | };
|
---|
| 642 |
|
---|
| 643 | static const unsigned char ascii64[] =
|
---|
| 644 | "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
|
---|
| 645 | /* 0000000000111111111122222222223333333333444444444455555555556666 */
|
---|
| 646 | /* 0123456789012345678901234567890123456789012345678901234567890123 */
|
---|
| 647 |
|
---|
| 648 | /*
|
---|
| 649 | * We match the behavior of UFC-crypt on systems where "char" is signed by
|
---|
| 650 | * default (the majority), regardless of char's signedness on our system.
|
---|
| 651 | */
|
---|
| 652 | static uint32_t ascii_to_bin(int ch)
|
---|
| 653 | {
|
---|
| 654 | int sch = (ch < 0x80) ? ch : -(0x100 - ch);
|
---|
| 655 | int retval;
|
---|
| 656 |
|
---|
| 657 | retval = sch - '.';
|
---|
| 658 | if (sch >= 'A') {
|
---|
| 659 | retval = sch - ('A' - 12);
|
---|
| 660 | if (sch >= 'a')
|
---|
| 661 | retval = sch - ('a' - 38);
|
---|
| 662 | }
|
---|
| 663 | retval &= 0x3f;
|
---|
| 664 |
|
---|
| 665 | return retval;
|
---|
| 666 | }
|
---|
| 667 |
|
---|
| 668 | /*
|
---|
| 669 | * When we choose to "support" invalid salts, nevertheless disallow those
|
---|
| 670 | * containing characters that would violate the passwd file format.
|
---|
| 671 | */
|
---|
| 672 | static inline int ascii_is_unsafe(unsigned char ch)
|
---|
| 673 | {
|
---|
| 674 | return !ch || ch == '\n' || ch == ':';
|
---|
| 675 | }
|
---|
| 676 |
|
---|
| 677 | static uint32_t setup_salt(uint32_t salt)
|
---|
| 678 | {
|
---|
| 679 | uint32_t obit, saltbit, saltbits;
|
---|
| 680 | unsigned int i;
|
---|
| 681 |
|
---|
| 682 | saltbits = 0;
|
---|
| 683 | saltbit = 1;
|
---|
| 684 | obit = 0x800000;
|
---|
| 685 | for (i = 0; i < 24; i++) {
|
---|
| 686 | if (salt & saltbit)
|
---|
| 687 | saltbits |= obit;
|
---|
| 688 | saltbit <<= 1;
|
---|
| 689 | obit >>= 1;
|
---|
| 690 | }
|
---|
| 691 |
|
---|
| 692 | return saltbits;
|
---|
| 693 | }
|
---|
| 694 |
|
---|
| 695 | void __des_setkey(const unsigned char *key, struct expanded_key *ekey)
|
---|
| 696 | {
|
---|
| 697 | uint32_t k0, k1, rawkey0, rawkey1;
|
---|
| 698 | unsigned int shifts, round, i, ibit;
|
---|
| 699 |
|
---|
| 700 | rawkey0 =
|
---|
| 701 | (uint32_t)key[3] |
|
---|
| 702 | ((uint32_t)key[2] << 8) |
|
---|
| 703 | ((uint32_t)key[1] << 16) |
|
---|
| 704 | ((uint32_t)key[0] << 24);
|
---|
| 705 | rawkey1 =
|
---|
| 706 | (uint32_t)key[7] |
|
---|
| 707 | ((uint32_t)key[6] << 8) |
|
---|
| 708 | ((uint32_t)key[5] << 16) |
|
---|
| 709 | ((uint32_t)key[4] << 24);
|
---|
| 710 |
|
---|
| 711 | /*
|
---|
| 712 | * Do key permutation and split into two 28-bit subkeys.
|
---|
| 713 | */
|
---|
| 714 | k0 = k1 = 0;
|
---|
| 715 | for (i = 0, ibit = 28; i < 4; i++, ibit -= 4) {
|
---|
| 716 | unsigned int j = i << 1;
|
---|
| 717 | k0 |= key_perm_maskl[i][(rawkey0 >> ibit) & 0xf] |
|
---|
| 718 | key_perm_maskl[i + 4][(rawkey1 >> ibit) & 0xf];
|
---|
| 719 | k1 |= key_perm_maskr[j][(rawkey0 >> ibit) & 0xf];
|
---|
| 720 | ibit -= 4;
|
---|
| 721 | k1 |= key_perm_maskr[j + 1][(rawkey0 >> ibit) & 0xf] |
|
---|
| 722 | key_perm_maskr[i + 8][(rawkey1 >> ibit) & 0xf];
|
---|
| 723 | }
|
---|
| 724 |
|
---|
| 725 | /*
|
---|
| 726 | * Rotate subkeys and do compression permutation.
|
---|
| 727 | */
|
---|
| 728 | shifts = 0;
|
---|
| 729 | for (round = 0; round < 16; round++) {
|
---|
| 730 | uint32_t t0, t1;
|
---|
| 731 | uint32_t kl, kr;
|
---|
| 732 |
|
---|
| 733 | shifts += key_shifts[round];
|
---|
| 734 |
|
---|
| 735 | t0 = (k0 << shifts) | (k0 >> (28 - shifts));
|
---|
| 736 | t1 = (k1 << shifts) | (k1 >> (28 - shifts));
|
---|
| 737 |
|
---|
| 738 | kl = kr = 0;
|
---|
| 739 | ibit = 25;
|
---|
| 740 | for (i = 0; i < 4; i++) {
|
---|
| 741 | kl |= comp_maskl0[i][(t0 >> ibit) & 7];
|
---|
| 742 | kr |= comp_maskr0[i][(t1 >> ibit) & 7];
|
---|
| 743 | ibit -= 4;
|
---|
| 744 | kl |= comp_maskl1[i][(t0 >> ibit) & 0xf];
|
---|
| 745 | kr |= comp_maskr1[i][(t1 >> ibit) & 0xf];
|
---|
| 746 | ibit -= 3;
|
---|
| 747 | }
|
---|
| 748 | ekey->l[round] = kl;
|
---|
| 749 | ekey->r[round] = kr;
|
---|
| 750 | }
|
---|
| 751 | }
|
---|
| 752 |
|
---|
| 753 | /*
|
---|
| 754 | * l_in, r_in, l_out, and r_out are in pseudo-"big-endian" format.
|
---|
| 755 | */
|
---|
| 756 | void __do_des(uint32_t l_in, uint32_t r_in,
|
---|
| 757 | uint32_t *l_out, uint32_t *r_out,
|
---|
| 758 | uint32_t count, uint32_t saltbits, const struct expanded_key *ekey)
|
---|
| 759 | {
|
---|
| 760 | uint32_t l, r;
|
---|
| 761 |
|
---|
| 762 | /*
|
---|
| 763 | * Do initial permutation (IP).
|
---|
| 764 | */
|
---|
| 765 | l = r = 0;
|
---|
| 766 | if (l_in | r_in) {
|
---|
| 767 | unsigned int i, ibit;
|
---|
| 768 | for (i = 0, ibit = 28; i < 8; i++, ibit -= 4) {
|
---|
| 769 | l |= ip_maskl[i][(l_in >> ibit) & 0xf] |
|
---|
| 770 | ip_maskl[i + 8][(r_in >> ibit) & 0xf];
|
---|
| 771 | r |= ip_maskr[i][(l_in >> ibit) & 0xf] |
|
---|
| 772 | ip_maskr[i + 8][(r_in >> ibit) & 0xf];
|
---|
| 773 | }
|
---|
| 774 | }
|
---|
| 775 |
|
---|
| 776 | while (count--) {
|
---|
| 777 | /*
|
---|
| 778 | * Do each round.
|
---|
| 779 | */
|
---|
| 780 | unsigned int round = 16;
|
---|
| 781 | const uint32_t *kl = ekey->l;
|
---|
| 782 | const uint32_t *kr = ekey->r;
|
---|
| 783 | uint32_t f;
|
---|
| 784 | while (round--) {
|
---|
| 785 | uint32_t r48l, r48r;
|
---|
| 786 | /*
|
---|
| 787 | * Expand R to 48 bits (simulate the E-box).
|
---|
| 788 | */
|
---|
| 789 | r48l = ((r & 0x00000001) << 23)
|
---|
| 790 | | ((r & 0xf8000000) >> 9)
|
---|
| 791 | | ((r & 0x1f800000) >> 11)
|
---|
| 792 | | ((r & 0x01f80000) >> 13)
|
---|
| 793 | | ((r & 0x001f8000) >> 15);
|
---|
| 794 |
|
---|
| 795 | r48r = ((r & 0x0001f800) << 7)
|
---|
| 796 | | ((r & 0x00001f80) << 5)
|
---|
| 797 | | ((r & 0x000001f8) << 3)
|
---|
| 798 | | ((r & 0x0000001f) << 1)
|
---|
| 799 | | ((r & 0x80000000) >> 31);
|
---|
| 800 | /*
|
---|
| 801 | * Do salting for crypt() and friends, and
|
---|
| 802 | * XOR with the permuted key.
|
---|
| 803 | */
|
---|
| 804 | f = (r48l ^ r48r) & saltbits;
|
---|
| 805 | r48l ^= f ^ *kl++;
|
---|
| 806 | r48r ^= f ^ *kr++;
|
---|
| 807 | /*
|
---|
| 808 | * Do S-box lookups (which shrink it back to 32 bits)
|
---|
| 809 | * and do the P-box permutation at the same time.
|
---|
| 810 | */
|
---|
| 811 | f = psbox[0][r48l >> 18]
|
---|
| 812 | | psbox[1][(r48l >> 12) & 0x3f]
|
---|
| 813 | | psbox[2][(r48l >> 6) & 0x3f]
|
---|
| 814 | | psbox[3][r48l & 0x3f]
|
---|
| 815 | | psbox[4][r48r >> 18]
|
---|
| 816 | | psbox[5][(r48r >> 12) & 0x3f]
|
---|
| 817 | | psbox[6][(r48r >> 6) & 0x3f]
|
---|
| 818 | | psbox[7][r48r & 0x3f];
|
---|
| 819 | /*
|
---|
| 820 | * Now that we've permuted things, complete f().
|
---|
| 821 | */
|
---|
| 822 | f ^= l;
|
---|
| 823 | l = r;
|
---|
| 824 | r = f;
|
---|
| 825 | }
|
---|
| 826 | r = l;
|
---|
| 827 | l = f;
|
---|
| 828 | }
|
---|
| 829 |
|
---|
| 830 | /*
|
---|
| 831 | * Do final permutation (inverse of IP).
|
---|
| 832 | */
|
---|
| 833 | {
|
---|
| 834 | unsigned int i, ibit;
|
---|
| 835 | uint32_t lo, ro;
|
---|
| 836 | lo = ro = 0;
|
---|
| 837 | for (i = 0, ibit = 28; i < 4; i++, ibit -= 4) {
|
---|
| 838 | ro |= fp_maskr[i][(l >> ibit) & 0xf] |
|
---|
| 839 | fp_maskr[i + 4][(r >> ibit) & 0xf];
|
---|
| 840 | ibit -= 4;
|
---|
| 841 | lo |= fp_maskl[i][(l >> ibit) & 0xf] |
|
---|
| 842 | fp_maskl[i + 4][(r >> ibit) & 0xf];
|
---|
| 843 | }
|
---|
| 844 | *l_out = lo;
|
---|
| 845 | *r_out = ro;
|
---|
| 846 | }
|
---|
| 847 | }
|
---|
| 848 |
|
---|
| 849 | static void des_cipher(const unsigned char *in, unsigned char *out,
|
---|
| 850 | uint32_t count, uint32_t saltbits, const struct expanded_key *ekey)
|
---|
| 851 | {
|
---|
| 852 | uint32_t l_out, r_out, rawl, rawr;
|
---|
| 853 |
|
---|
| 854 | rawl =
|
---|
| 855 | (uint32_t)in[3] |
|
---|
| 856 | ((uint32_t)in[2] << 8) |
|
---|
| 857 | ((uint32_t)in[1] << 16) |
|
---|
| 858 | ((uint32_t)in[0] << 24);
|
---|
| 859 | rawr =
|
---|
| 860 | (uint32_t)in[7] |
|
---|
| 861 | ((uint32_t)in[6] << 8) |
|
---|
| 862 | ((uint32_t)in[5] << 16) |
|
---|
| 863 | ((uint32_t)in[4] << 24);
|
---|
| 864 |
|
---|
| 865 | __do_des(rawl, rawr, &l_out, &r_out, count, saltbits, ekey);
|
---|
| 866 |
|
---|
| 867 | out[0] = l_out >> 24;
|
---|
| 868 | out[1] = l_out >> 16;
|
---|
| 869 | out[2] = l_out >> 8;
|
---|
| 870 | out[3] = l_out;
|
---|
| 871 | out[4] = r_out >> 24;
|
---|
| 872 | out[5] = r_out >> 16;
|
---|
| 873 | out[6] = r_out >> 8;
|
---|
| 874 | out[7] = r_out;
|
---|
| 875 | }
|
---|
| 876 |
|
---|
| 877 | static char *_crypt_extended_r_uut(const char *_key, const char *_setting, char *output)
|
---|
| 878 | {
|
---|
| 879 | const unsigned char *key = (const unsigned char *)_key;
|
---|
| 880 | const unsigned char *setting = (const unsigned char *)_setting;
|
---|
| 881 | struct expanded_key ekey;
|
---|
| 882 | unsigned char keybuf[8];
|
---|
| 883 | unsigned char *p, *q;
|
---|
| 884 | uint32_t count, salt, l, r0, r1;
|
---|
| 885 | unsigned int i;
|
---|
| 886 |
|
---|
| 887 | /*
|
---|
| 888 | * Copy the key, shifting each character left by one bit and padding
|
---|
| 889 | * with zeroes.
|
---|
| 890 | */
|
---|
| 891 | q = keybuf;
|
---|
| 892 | while (q <= &keybuf[sizeof(keybuf) - 1]) {
|
---|
| 893 | *q++ = *key << 1;
|
---|
| 894 | if (*key)
|
---|
| 895 | key++;
|
---|
| 896 | }
|
---|
| 897 | __des_setkey(keybuf, &ekey);
|
---|
| 898 |
|
---|
| 899 | if (*setting == _PASSWORD_EFMT1) {
|
---|
| 900 | /*
|
---|
| 901 | * "new"-style:
|
---|
| 902 | * setting - underscore, 4 chars of count, 4 chars of salt
|
---|
| 903 | * key - unlimited characters
|
---|
| 904 | */
|
---|
| 905 | for (i = 1, count = 0; i < 5; i++) {
|
---|
| 906 | uint32_t value = ascii_to_bin(setting[i]);
|
---|
| 907 | if (ascii64[value] != setting[i])
|
---|
| 908 | return NULL;
|
---|
| 909 | count |= value << (i - 1) * 6;
|
---|
| 910 | }
|
---|
| 911 | if (!count)
|
---|
| 912 | return NULL;
|
---|
| 913 |
|
---|
| 914 | for (i = 5, salt = 0; i < 9; i++) {
|
---|
| 915 | uint32_t value = ascii_to_bin(setting[i]);
|
---|
| 916 | if (ascii64[value] != setting[i])
|
---|
| 917 | return NULL;
|
---|
| 918 | salt |= value << (i - 5) * 6;
|
---|
| 919 | }
|
---|
| 920 |
|
---|
| 921 | while (*key) {
|
---|
| 922 | /*
|
---|
| 923 | * Encrypt the key with itself.
|
---|
| 924 | */
|
---|
| 925 | des_cipher(keybuf, keybuf, 1, 0, &ekey);
|
---|
| 926 | /*
|
---|
| 927 | * And XOR with the next 8 characters of the key.
|
---|
| 928 | */
|
---|
| 929 | q = keybuf;
|
---|
| 930 | while (q <= &keybuf[sizeof(keybuf) - 1] && *key)
|
---|
| 931 | *q++ ^= *key++ << 1;
|
---|
| 932 | __des_setkey(keybuf, &ekey);
|
---|
| 933 | }
|
---|
| 934 |
|
---|
| 935 | memcpy(output, setting, 9);
|
---|
| 936 | output[9] = '\0';
|
---|
| 937 | p = (unsigned char *)output + 9;
|
---|
| 938 | } else {
|
---|
| 939 | /*
|
---|
| 940 | * "old"-style:
|
---|
| 941 | * setting - 2 chars of salt
|
---|
| 942 | * key - up to 8 characters
|
---|
| 943 | */
|
---|
| 944 | count = 25;
|
---|
| 945 |
|
---|
| 946 | if (ascii_is_unsafe(setting[0]) || ascii_is_unsafe(setting[1]))
|
---|
| 947 | return NULL;
|
---|
| 948 |
|
---|
| 949 | salt = (ascii_to_bin(setting[1]) << 6)
|
---|
| 950 | | ascii_to_bin(setting[0]);
|
---|
| 951 |
|
---|
| 952 | output[0] = setting[0];
|
---|
| 953 | output[1] = setting[1];
|
---|
| 954 | p = (unsigned char *)output + 2;
|
---|
| 955 | }
|
---|
| 956 |
|
---|
| 957 | /*
|
---|
| 958 | * Do it.
|
---|
| 959 | */
|
---|
| 960 | __do_des(0, 0, &r0, &r1, count, setup_salt(salt), &ekey);
|
---|
| 961 |
|
---|
| 962 | /*
|
---|
| 963 | * Now encode the result...
|
---|
| 964 | */
|
---|
| 965 | l = (r0 >> 8);
|
---|
| 966 | *p++ = ascii64[(l >> 18) & 0x3f];
|
---|
| 967 | *p++ = ascii64[(l >> 12) & 0x3f];
|
---|
| 968 | *p++ = ascii64[(l >> 6) & 0x3f];
|
---|
| 969 | *p++ = ascii64[l & 0x3f];
|
---|
| 970 |
|
---|
| 971 | l = (r0 << 16) | ((r1 >> 16) & 0xffff);
|
---|
| 972 | *p++ = ascii64[(l >> 18) & 0x3f];
|
---|
| 973 | *p++ = ascii64[(l >> 12) & 0x3f];
|
---|
| 974 | *p++ = ascii64[(l >> 6) & 0x3f];
|
---|
| 975 | *p++ = ascii64[l & 0x3f];
|
---|
| 976 |
|
---|
| 977 | l = r1 << 2;
|
---|
| 978 | *p++ = ascii64[(l >> 12) & 0x3f];
|
---|
| 979 | *p++ = ascii64[(l >> 6) & 0x3f];
|
---|
| 980 | *p++ = ascii64[l & 0x3f];
|
---|
| 981 | *p = 0;
|
---|
| 982 |
|
---|
| 983 | return output;
|
---|
| 984 | }
|
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| 985 |
|
---|
| 986 | char *__crypt_des(const char *key, const char *setting, char *output)
|
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| 987 | {
|
---|
| 988 | const char *test_key = "\x80\xff\x80\x01 "
|
---|
| 989 | "\x7f\x81\x80\x80\x0d\x0a\xff\x7f \x81 test";
|
---|
| 990 | const char *test_setting = "_0.../9Zz";
|
---|
| 991 | const char *test_hash = "_0.../9ZzX7iSJNd21sU";
|
---|
| 992 | char test_buf[21];
|
---|
| 993 | char *retval;
|
---|
| 994 | const char *p;
|
---|
| 995 |
|
---|
| 996 | if (*setting != _PASSWORD_EFMT1) {
|
---|
| 997 | test_setting = "\x80x";
|
---|
| 998 | test_hash = "\x80x22/wK52ZKGA";
|
---|
| 999 | }
|
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| 1000 |
|
---|
| 1001 | /*
|
---|
| 1002 | * Hash the supplied password.
|
---|
| 1003 | */
|
---|
| 1004 | retval = _crypt_extended_r_uut(key, setting, output);
|
---|
| 1005 |
|
---|
| 1006 | /*
|
---|
| 1007 | * Perform a quick self-test. It is important that we make both calls
|
---|
| 1008 | * to _crypt_extended_r_uut() from the same scope such that they likely
|
---|
| 1009 | * use the same stack locations, which makes the second call overwrite
|
---|
| 1010 | * the first call's sensitive data on the stack and makes it more
|
---|
| 1011 | * likely that any alignment related issues would be detected.
|
---|
| 1012 | */
|
---|
| 1013 | p = _crypt_extended_r_uut(test_key, test_setting, test_buf);
|
---|
| 1014 | if (p && !strcmp(p, test_hash) && retval)
|
---|
| 1015 | return retval;
|
---|
| 1016 |
|
---|
| 1017 | return (setting[0]=='*') ? "x" : "*";
|
---|
| 1018 | }
|
---|