md5.c (9938b04472d5c59f8bd8152a548533a8599596a2) md5.c (3c7eb3cc8360736123a3139a1ec727d746de3252)
1/*
2 * Cryptographic API.
3 *
4 * MD5 Message Digest Algorithm (RFC1321).
5 *
6 * Derived from cryptoapi implementation, originally based on the
7 * public domain implementation written by Colin Plumb in 1993.
8 *

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16 *
17 */
18#include <crypto/internal/hash.h>
19#include <crypto/md5.h>
20#include <linux/init.h>
21#include <linux/module.h>
22#include <linux/string.h>
23#include <linux/types.h>
1/*
2 * Cryptographic API.
3 *
4 * MD5 Message Digest Algorithm (RFC1321).
5 *
6 * Derived from cryptoapi implementation, originally based on the
7 * public domain implementation written by Colin Plumb in 1993.
8 *

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16 *
17 */
18#include <crypto/internal/hash.h>
19#include <crypto/md5.h>
20#include <linux/init.h>
21#include <linux/module.h>
22#include <linux/string.h>
23#include <linux/types.h>
24#include <linux/cryptohash.h>
25#include <asm/byteorder.h>
26
24#include <asm/byteorder.h>
25
26#define MD5_DIGEST_WORDS 4
27#define MD5_MESSAGE_BYTES 64
28
27const u8 md5_zero_message_hash[MD5_DIGEST_SIZE] = {
28 0xd4, 0x1d, 0x8c, 0xd9, 0x8f, 0x00, 0xb2, 0x04,
29 0xe9, 0x80, 0x09, 0x98, 0xec, 0xf8, 0x42, 0x7e,
30};
31EXPORT_SYMBOL_GPL(md5_zero_message_hash);
32
33/* XXX: this stuff can be optimized */
34static inline void le32_to_cpu_array(u32 *buf, unsigned int words)

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42static inline void cpu_to_le32_array(u32 *buf, unsigned int words)
43{
44 while (words--) {
45 __cpu_to_le32s(buf);
46 buf++;
47 }
48}
49
29const u8 md5_zero_message_hash[MD5_DIGEST_SIZE] = {
30 0xd4, 0x1d, 0x8c, 0xd9, 0x8f, 0x00, 0xb2, 0x04,
31 0xe9, 0x80, 0x09, 0x98, 0xec, 0xf8, 0x42, 0x7e,
32};
33EXPORT_SYMBOL_GPL(md5_zero_message_hash);
34
35/* XXX: this stuff can be optimized */
36static inline void le32_to_cpu_array(u32 *buf, unsigned int words)

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44static inline void cpu_to_le32_array(u32 *buf, unsigned int words)
45{
46 while (words--) {
47 __cpu_to_le32s(buf);
48 buf++;
49 }
50}
51
52#define F1(x, y, z) (z ^ (x & (y ^ z)))
53#define F2(x, y, z) F1(z, x, y)
54#define F3(x, y, z) (x ^ y ^ z)
55#define F4(x, y, z) (y ^ (x | ~z))
56
57#define MD5STEP(f, w, x, y, z, in, s) \
58 (w += f(x, y, z) + in, w = (w<<s | w>>(32-s)) + x)
59
60static void md5_transform(__u32 *hash, __u32 const *in)
61{
62 u32 a, b, c, d;
63
64 a = hash[0];
65 b = hash[1];
66 c = hash[2];
67 d = hash[3];
68
69 MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);
70 MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);
71 MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17);
72 MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22);
73 MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7);
74 MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12);
75 MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17);
76 MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22);
77 MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7);
78 MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12);
79 MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
80 MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);
81 MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);
82 MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);
83 MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17);
84 MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22);
85
86 MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5);
87 MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9);
88 MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14);
89 MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);
90 MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5);
91 MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9);
92 MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14);
93 MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);
94 MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5);
95 MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9);
96 MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14);
97 MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20);
98 MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5);
99 MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);
100 MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14);
101 MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);
102
103 MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4);
104 MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11);
105 MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16);
106 MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23);
107 MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4);
108 MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);
109 MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);
110 MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23);
111 MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4);
112 MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11);
113 MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16);
114 MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23);
115 MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4);
116 MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11);
117 MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);
118 MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23);
119
120 MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6);
121 MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10);
122 MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);
123 MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21);
124 MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);
125 MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);
126 MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);
127 MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);
128 MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);
129 MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
130 MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);
131 MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
132 MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);
133 MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);
134 MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
135 MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);
136
137 hash[0] += a;
138 hash[1] += b;
139 hash[2] += c;
140 hash[3] += d;
141}
142
50static inline void md5_transform_helper(struct md5_state *ctx)
51{
52 le32_to_cpu_array(ctx->block, sizeof(ctx->block) / sizeof(u32));
53 md5_transform(ctx->hash, ctx->block);
54}
55
56static int md5_init(struct shash_desc *desc)
57{

--- 120 unchanged lines hidden --- 		143static inline void md5_transform_helper(struct md5_state *ctx)
144{
145 le32_to_cpu_array(ctx->block, sizeof(ctx->block) / sizeof(u32));
146 md5_transform(ctx->hash, ctx->block);
147}
148
149static int md5_init(struct shash_desc *desc)
150{

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