[331] | 1 | /*
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| 2 | * Copyright 1998-2016 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the OpenSSL license (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | /* NOCW */
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| 11 | #include <stdio.h>
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| 12 | #ifdef _OSD_POSIX
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| 13 | # ifndef CHARSET_EBCDIC
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| 14 | # define CHARSET_EBCDIC 1
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| 15 | # endif
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| 16 | #endif
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| 17 | #ifdef CHARSET_EBCDIC
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| 18 | # include <openssl/ebcdic.h>
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| 19 | #endif
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| 20 |
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| 21 | #include <openssl/crypto.h>
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| 22 | #include "des_locl.h"
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| 23 |
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| 24 | /*
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| 25 | * Added more values to handle illegal salt values the way normal crypt()
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| 26 | * implementations do. The patch was sent by Bjorn Gronvall <bg@sics.se>
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| 27 | */
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| 28 | static unsigned const char con_salt[128] = {
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| 29 | 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9,
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| 30 | 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF, 0xE0, 0xE1,
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| 31 | 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9,
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| 32 | 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF, 0xF0, 0xF1,
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| 33 | 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9,
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| 34 | 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF, 0x00, 0x01,
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| 35 | 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09,
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| 36 | 0x0A, 0x0B, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A,
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| 37 | 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12,
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| 38 | 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A,
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| 39 | 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, 0x21, 0x22,
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| 40 | 0x23, 0x24, 0x25, 0x20, 0x21, 0x22, 0x23, 0x24,
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| 41 | 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C,
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| 42 | 0x2D, 0x2E, 0x2F, 0x30, 0x31, 0x32, 0x33, 0x34,
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| 43 | 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C,
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| 44 | 0x3D, 0x3E, 0x3F, 0x40, 0x41, 0x42, 0x43, 0x44,
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| 45 | };
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| 46 |
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| 47 | static unsigned const char cov_2char[64] = {
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| 48 | 0x2E, 0x2F, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35,
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| 49 | 0x36, 0x37, 0x38, 0x39, 0x41, 0x42, 0x43, 0x44,
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| 50 | 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C,
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| 51 | 0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52, 0x53, 0x54,
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| 52 | 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x61, 0x62,
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| 53 | 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A,
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| 54 | 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70, 0x71, 0x72,
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| 55 | 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A
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| 56 | };
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| 57 |
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| 58 | char *DES_crypt(const char *buf, const char *salt)
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| 59 | {
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| 60 | static char buff[14];
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| 61 |
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| 62 | #ifndef CHARSET_EBCDIC
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| 63 | return (DES_fcrypt(buf, salt, buff));
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| 64 | #else
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| 65 | char e_salt[2 + 1];
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| 66 | char e_buf[32 + 1]; /* replace 32 by 8 ? */
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| 67 | char *ret;
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| 68 |
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| 69 | if (salt[0] == '\0' || salt[1] == '\0')
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| 70 | return NULL;
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| 71 |
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| 72 | /* Copy salt, convert to ASCII. */
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| 73 | e_salt[0] = salt[0];
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| 74 | e_salt[1] = salt[1];
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| 75 | e_salt[2] = '\0';
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| 76 | ebcdic2ascii(e_salt, e_salt, sizeof(e_salt));
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| 77 |
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| 78 | /* Convert password to ASCII. */
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| 79 | OPENSSL_strlcpy(e_buf, buf, sizeof(e_buf));
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| 80 | ebcdic2ascii(e_buf, e_buf, sizeof e_buf);
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| 81 |
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| 82 | /* Encrypt it (from/to ASCII); if it worked, convert back. */
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| 83 | ret = DES_fcrypt(e_buf, e_salt, buff);
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| 84 | if (ret != NULL)
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| 85 | ascii2ebcdic(ret, ret, strlen(ret));
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| 86 |
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| 87 | return ret;
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| 88 | #endif
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| 89 | }
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| 90 |
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| 91 | char *DES_fcrypt(const char *buf, const char *salt, char *ret)
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| 92 | {
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| 93 | unsigned int i, j, x, y;
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| 94 | DES_LONG Eswap0, Eswap1;
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| 95 | DES_LONG out[2], ll;
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| 96 | DES_cblock key;
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| 97 | DES_key_schedule ks;
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| 98 | unsigned char bb[9];
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| 99 | unsigned char *b = bb;
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| 100 | unsigned char c, u;
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| 101 |
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| 102 | x = ret[0] = salt[0];
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| 103 | if (x == 0 || x >= sizeof(con_salt))
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| 104 | return NULL;
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| 105 | Eswap0 = con_salt[x] << 2;
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| 106 | x = ret[1] = salt[1];
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| 107 | if (x == 0 || x >= sizeof(con_salt))
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| 108 | return NULL;
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| 109 | Eswap1 = con_salt[x] << 6;
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| 110 |
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| 111 | /*
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| 112 | * EAY r=strlen(buf); r=(r+7)/8;
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| 113 | */
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| 114 | for (i = 0; i < 8; i++) {
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| 115 | c = *(buf++);
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| 116 | if (!c)
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| 117 | break;
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| 118 | key[i] = (c << 1);
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| 119 | }
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| 120 | for (; i < 8; i++)
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| 121 | key[i] = 0;
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| 122 |
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| 123 | DES_set_key_unchecked(&key, &ks);
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| 124 | fcrypt_body(&(out[0]), &ks, Eswap0, Eswap1);
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| 125 |
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| 126 | ll = out[0];
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| 127 | l2c(ll, b);
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| 128 | ll = out[1];
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| 129 | l2c(ll, b);
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| 130 | y = 0;
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| 131 | u = 0x80;
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| 132 | bb[8] = 0;
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| 133 | for (i = 2; i < 13; i++) {
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| 134 | c = 0;
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| 135 | for (j = 0; j < 6; j++) {
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| 136 | c <<= 1;
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| 137 | if (bb[y] & u)
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| 138 | c |= 1;
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| 139 | u >>= 1;
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| 140 | if (!u) {
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| 141 | y++;
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| 142 | u = 0x80;
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| 143 | }
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| 144 | }
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| 145 | ret[i] = cov_2char[c];
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| 146 | }
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| 147 | ret[13] = '\0';
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| 148 | return (ret);
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| 149 | }
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