/src/openssl/crypto/md2/md2_dgst.c
Line | Count | Source (jump to first uncovered line) |
1 | | /* |
2 | | * Copyright 1995-2020 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 | | /* |
11 | | * MD2 low level APIs are deprecated for public use, but still ok for |
12 | | * internal use. |
13 | | */ |
14 | | #include "internal/deprecated.h" |
15 | | |
16 | | #include <stdio.h> |
17 | | #include <stdlib.h> |
18 | | #include <string.h> |
19 | | #include <openssl/md2.h> |
20 | | #include <openssl/opensslv.h> |
21 | | #include <openssl/crypto.h> |
22 | | |
23 | | /* |
24 | | * Implemented from RFC1319 The MD2 Message-Digest Algorithm |
25 | | */ |
26 | | |
27 | | #define UCHAR unsigned char |
28 | | |
29 | | static void md2_block(MD2_CTX *c, const unsigned char *d); |
30 | | /* |
31 | | * The magic S table - I have converted it to hex since it is basically just |
32 | | * a random byte string. |
33 | | */ |
34 | | static const MD2_INT S[256] = { |
35 | | 0x29, 0x2E, 0x43, 0xC9, 0xA2, 0xD8, 0x7C, 0x01, |
36 | | 0x3D, 0x36, 0x54, 0xA1, 0xEC, 0xF0, 0x06, 0x13, |
37 | | 0x62, 0xA7, 0x05, 0xF3, 0xC0, 0xC7, 0x73, 0x8C, |
38 | | 0x98, 0x93, 0x2B, 0xD9, 0xBC, 0x4C, 0x82, 0xCA, |
39 | | 0x1E, 0x9B, 0x57, 0x3C, 0xFD, 0xD4, 0xE0, 0x16, |
40 | | 0x67, 0x42, 0x6F, 0x18, 0x8A, 0x17, 0xE5, 0x12, |
41 | | 0xBE, 0x4E, 0xC4, 0xD6, 0xDA, 0x9E, 0xDE, 0x49, |
42 | | 0xA0, 0xFB, 0xF5, 0x8E, 0xBB, 0x2F, 0xEE, 0x7A, |
43 | | 0xA9, 0x68, 0x79, 0x91, 0x15, 0xB2, 0x07, 0x3F, |
44 | | 0x94, 0xC2, 0x10, 0x89, 0x0B, 0x22, 0x5F, 0x21, |
45 | | 0x80, 0x7F, 0x5D, 0x9A, 0x5A, 0x90, 0x32, 0x27, |
46 | | 0x35, 0x3E, 0xCC, 0xE7, 0xBF, 0xF7, 0x97, 0x03, |
47 | | 0xFF, 0x19, 0x30, 0xB3, 0x48, 0xA5, 0xB5, 0xD1, |
48 | | 0xD7, 0x5E, 0x92, 0x2A, 0xAC, 0x56, 0xAA, 0xC6, |
49 | | 0x4F, 0xB8, 0x38, 0xD2, 0x96, 0xA4, 0x7D, 0xB6, |
50 | | 0x76, 0xFC, 0x6B, 0xE2, 0x9C, 0x74, 0x04, 0xF1, |
51 | | 0x45, 0x9D, 0x70, 0x59, 0x64, 0x71, 0x87, 0x20, |
52 | | 0x86, 0x5B, 0xCF, 0x65, 0xE6, 0x2D, 0xA8, 0x02, |
53 | | 0x1B, 0x60, 0x25, 0xAD, 0xAE, 0xB0, 0xB9, 0xF6, |
54 | | 0x1C, 0x46, 0x61, 0x69, 0x34, 0x40, 0x7E, 0x0F, |
55 | | 0x55, 0x47, 0xA3, 0x23, 0xDD, 0x51, 0xAF, 0x3A, |
56 | | 0xC3, 0x5C, 0xF9, 0xCE, 0xBA, 0xC5, 0xEA, 0x26, |
57 | | 0x2C, 0x53, 0x0D, 0x6E, 0x85, 0x28, 0x84, 0x09, |
58 | | 0xD3, 0xDF, 0xCD, 0xF4, 0x41, 0x81, 0x4D, 0x52, |
59 | | 0x6A, 0xDC, 0x37, 0xC8, 0x6C, 0xC1, 0xAB, 0xFA, |
60 | | 0x24, 0xE1, 0x7B, 0x08, 0x0C, 0xBD, 0xB1, 0x4A, |
61 | | 0x78, 0x88, 0x95, 0x8B, 0xE3, 0x63, 0xE8, 0x6D, |
62 | | 0xE9, 0xCB, 0xD5, 0xFE, 0x3B, 0x00, 0x1D, 0x39, |
63 | | 0xF2, 0xEF, 0xB7, 0x0E, 0x66, 0x58, 0xD0, 0xE4, |
64 | | 0xA6, 0x77, 0x72, 0xF8, 0xEB, 0x75, 0x4B, 0x0A, |
65 | | 0x31, 0x44, 0x50, 0xB4, 0x8F, 0xED, 0x1F, 0x1A, |
66 | | 0xDB, 0x99, 0x8D, 0x33, 0x9F, 0x11, 0x83, 0x14, |
67 | | }; |
68 | | |
69 | | const char *MD2_options(void) |
70 | 0 | { |
71 | 0 | if (sizeof(MD2_INT) == 1) |
72 | 0 | return "md2(char)"; |
73 | 0 | else |
74 | 0 | return "md2(int)"; |
75 | 0 | } |
76 | | |
77 | | int MD2_Init(MD2_CTX *c) |
78 | 0 | { |
79 | 0 | c->num = 0; |
80 | 0 | memset(c->state, 0, sizeof(c->state)); |
81 | 0 | memset(c->cksm, 0, sizeof(c->cksm)); |
82 | 0 | memset(c->data, 0, sizeof(c->data)); |
83 | 0 | return 1; |
84 | 0 | } |
85 | | |
86 | | int MD2_Update(MD2_CTX *c, const unsigned char *data, size_t len) |
87 | 0 | { |
88 | 0 | register UCHAR *p; |
89 | |
|
90 | 0 | if (len == 0) |
91 | 0 | return 1; |
92 | | |
93 | 0 | p = c->data; |
94 | 0 | if (c->num != 0) { |
95 | 0 | if ((c->num + len) >= MD2_BLOCK) { |
96 | 0 | memcpy(&(p[c->num]), data, MD2_BLOCK - c->num); |
97 | 0 | md2_block(c, c->data); |
98 | 0 | data += (MD2_BLOCK - c->num); |
99 | 0 | len -= (MD2_BLOCK - c->num); |
100 | 0 | c->num = 0; |
101 | | /* drop through and do the rest */ |
102 | 0 | } else { |
103 | 0 | memcpy(&(p[c->num]), data, len); |
104 | | /* data+=len; */ |
105 | 0 | c->num += (int)len; |
106 | 0 | return 1; |
107 | 0 | } |
108 | 0 | } |
109 | | /* |
110 | | * we now can process the input data in blocks of MD2_BLOCK chars and |
111 | | * save the leftovers to c->data. |
112 | | */ |
113 | 0 | while (len >= MD2_BLOCK) { |
114 | 0 | md2_block(c, data); |
115 | 0 | data += MD2_BLOCK; |
116 | 0 | len -= MD2_BLOCK; |
117 | 0 | } |
118 | 0 | memcpy(p, data, len); |
119 | 0 | c->num = (int)len; |
120 | 0 | return 1; |
121 | 0 | } |
122 | | |
123 | | static void md2_block(MD2_CTX *c, const unsigned char *d) |
124 | 0 | { |
125 | 0 | register MD2_INT t, *sp1, *sp2; |
126 | 0 | register int i, j; |
127 | 0 | MD2_INT state[48]; |
128 | |
|
129 | 0 | sp1 = c->state; |
130 | 0 | sp2 = c->cksm; |
131 | 0 | j = sp2[MD2_BLOCK - 1]; |
132 | 0 | for (i = 0; i < 16; i++) { |
133 | 0 | state[i] = sp1[i]; |
134 | 0 | state[i + 16] = t = d[i]; |
135 | 0 | state[i + 32] = (t ^ sp1[i]); |
136 | 0 | j = sp2[i] ^= S[t ^ j]; |
137 | 0 | } |
138 | 0 | t = 0; |
139 | 0 | for (i = 0; i < 18; i++) { |
140 | 0 | for (j = 0; j < 48; j += 8) { |
141 | 0 | t = state[j + 0] ^= S[t]; |
142 | 0 | t = state[j + 1] ^= S[t]; |
143 | 0 | t = state[j + 2] ^= S[t]; |
144 | 0 | t = state[j + 3] ^= S[t]; |
145 | 0 | t = state[j + 4] ^= S[t]; |
146 | 0 | t = state[j + 5] ^= S[t]; |
147 | 0 | t = state[j + 6] ^= S[t]; |
148 | 0 | t = state[j + 7] ^= S[t]; |
149 | 0 | } |
150 | 0 | t = (t + i) & 0xff; |
151 | 0 | } |
152 | 0 | memcpy(sp1, state, 16 * sizeof(MD2_INT)); |
153 | 0 | OPENSSL_cleanse(state, 48 * sizeof(MD2_INT)); |
154 | 0 | } |
155 | | |
156 | | int MD2_Final(unsigned char *md, MD2_CTX *c) |
157 | 0 | { |
158 | 0 | int i, v; |
159 | 0 | register UCHAR *cp; |
160 | 0 | register MD2_INT *p1, *p2; |
161 | |
|
162 | 0 | cp = c->data; |
163 | 0 | p1 = c->state; |
164 | 0 | p2 = c->cksm; |
165 | 0 | v = MD2_BLOCK - c->num; |
166 | 0 | for (i = c->num; i < MD2_BLOCK; i++) |
167 | 0 | cp[i] = (UCHAR) v; |
168 | |
|
169 | 0 | md2_block(c, cp); |
170 | |
|
171 | 0 | for (i = 0; i < MD2_BLOCK; i++) |
172 | 0 | cp[i] = (UCHAR) p2[i]; |
173 | 0 | md2_block(c, cp); |
174 | |
|
175 | 0 | for (i = 0; i < 16; i++) |
176 | 0 | md[i] = (UCHAR) (p1[i] & 0xff); |
177 | 0 | OPENSSL_cleanse(c, sizeof(*c)); |
178 | 0 | return 1; |
179 | 0 | } |