1 | /* |
2 | * Copyright 1998-2016 The OpenSSL Project Authors. All Rights Reserved. |
3 | * |
4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
5 | * this file except in compliance with the License. You can obtain a copy |
6 | * in the file LICENSE in the source distribution or at |
7 | * https://www.openssl.org/source/license.html |
8 | */ |
9 | |
10 | /* NOCW */ |
11 | #include <stdio.h> |
12 | #ifdef _OSD_POSIX |
13 | # ifndef CHARSET_EBCDIC |
14 | # define CHARSET_EBCDIC 1 |
15 | # endif |
16 | #endif |
17 | #ifdef CHARSET_EBCDIC |
18 | # include <openssl/ebcdic.h> |
19 | #endif |
20 | |
21 | #include <openssl/crypto.h> |
22 | #include "des_local.h" |
23 | |
24 | /* |
25 | * Added more values to handle illegal salt values the way normal crypt() |
26 | * implementations do. |
27 | */ |
28 | static unsigned const char con_salt[128] = { |
29 | 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, |
30 | 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF, 0xE0, 0xE1, |
31 | 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, |
32 | 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF, 0xF0, 0xF1, |
33 | 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, |
34 | 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF, 0x00, 0x01, |
35 | 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, |
36 | 0x0A, 0x0B, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, |
37 | 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, |
38 | 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, |
39 | 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, 0x21, 0x22, |
40 | 0x23, 0x24, 0x25, 0x20, 0x21, 0x22, 0x23, 0x24, |
41 | 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C, |
42 | 0x2D, 0x2E, 0x2F, 0x30, 0x31, 0x32, 0x33, 0x34, |
43 | 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, |
44 | 0x3D, 0x3E, 0x3F, 0x40, 0x41, 0x42, 0x43, 0x44, |
45 | }; |
46 | |
47 | static unsigned const char cov_2char[64] = { |
48 | 0x2E, 0x2F, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, |
49 | 0x36, 0x37, 0x38, 0x39, 0x41, 0x42, 0x43, 0x44, |
50 | 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C, |
51 | 0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52, 0x53, 0x54, |
52 | 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x61, 0x62, |
53 | 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, |
54 | 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70, 0x71, 0x72, |
55 | 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A |
56 | }; |
57 | |
58 | char *DES_crypt(const char *buf, const char *salt) |
59 | { |
60 | static char buff[14]; |
61 | |
62 | #ifndef CHARSET_EBCDIC |
63 | return DES_fcrypt(buf, salt, buff); |
64 | #else |
65 | char e_salt[2 + 1]; |
66 | char e_buf[32 + 1]; /* replace 32 by 8 ? */ |
67 | char *ret; |
68 | |
69 | if (salt[0] == '\0' || salt[1] == '\0') |
70 | return NULL; |
71 | |
72 | /* Copy salt, convert to ASCII. */ |
73 | e_salt[0] = salt[0]; |
74 | e_salt[1] = salt[1]; |
75 | e_salt[2] = '\0'; |
76 | ebcdic2ascii(e_salt, e_salt, sizeof(e_salt)); |
77 | |
78 | /* Convert password to ASCII. */ |
79 | OPENSSL_strlcpy(e_buf, buf, sizeof(e_buf)); |
80 | ebcdic2ascii(e_buf, e_buf, sizeof(e_buf)); |
81 | |
82 | /* Encrypt it (from/to ASCII); if it worked, convert back. */ |
83 | ret = DES_fcrypt(e_buf, e_salt, buff); |
84 | if (ret != NULL) |
85 | ascii2ebcdic(ret, ret, strlen(ret)); |
86 | |
87 | return ret; |
88 | #endif |
89 | } |
90 | |
91 | char *DES_fcrypt(const char *buf, const char *salt, char *ret) |
92 | { |
93 | unsigned int i, j, x, y; |
94 | DES_LONG Eswap0, Eswap1; |
95 | DES_LONG out[2], ll; |
96 | DES_cblock key; |
97 | DES_key_schedule ks; |
98 | unsigned char bb[9]; |
99 | unsigned char *b = bb; |
100 | unsigned char c, u; |
101 | |
102 | x = ret[0] = salt[0]; |
103 | if (x == 0 || x >= sizeof(con_salt)) |
104 | return NULL; |
105 | Eswap0 = con_salt[x] << 2; |
106 | x = ret[1] = salt[1]; |
107 | if (x == 0 || x >= sizeof(con_salt)) |
108 | return NULL; |
109 | Eswap1 = con_salt[x] << 6; |
110 | |
111 | /* |
112 | * EAY r=strlen(buf); r=(r+7)/8; |
113 | */ |
114 | for (i = 0; i < 8; i++) { |
115 | c = *(buf++); |
116 | if (!c) |
117 | break; |
118 | key[i] = (c << 1); |
119 | } |
120 | for (; i < 8; i++) |
121 | key[i] = 0; |
122 | |
123 | DES_set_key_unchecked(&key, &ks); |
124 | fcrypt_body(&(out[0]), &ks, Eswap0, Eswap1); |
125 | |
126 | ll = out[0]; |
127 | l2c(ll, b); |
128 | ll = out[1]; |
129 | l2c(ll, b); |
130 | y = 0; |
131 | u = 0x80; |
132 | bb[8] = 0; |
133 | for (i = 2; i < 13; i++) { |
134 | c = 0; |
135 | for (j = 0; j < 6; j++) { |
136 | c <<= 1; |
137 | if (bb[y] & u) |
138 | c |= 1; |
139 | u >>= 1; |
140 | if (!u) { |
141 | y++; |
142 | u = 0x80; |
143 | } |
144 | } |
145 | ret[i] = cov_2char[c]; |
146 | } |
147 | ret[13] = '\0'; |
148 | return ret; |
149 | } |
150 | |