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1 | #include <linux/kernel.h> |
2 | #include <linux/module.h> |
3 | #include <linux/cryptohash.h> |
4 | |
5 | #define F1(x, y, z) (z ^ (x & (y ^ z))) |
6 | #define F2(x, y, z) F1(z, x, y) |
7 | #define F3(x, y, z) (x ^ y ^ z) |
8 | #define F4(x, y, z) (y ^ (x | ~z)) |
9 | |
10 | #define MD5STEP(f, w, x, y, z, in, s) \ |
11 | (w += f(x, y, z) + in, w = (w<<s | w>>(32-s)) + x) |
12 | |
13 | void md5_transform(__u32 *hash, __u32 const *in) |
14 | { |
15 | u32 a, b, c, d; |
16 | |
17 | a = hash[0]; |
18 | b = hash[1]; |
19 | c = hash[2]; |
20 | d = hash[3]; |
21 | |
22 | MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7); |
23 | MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12); |
24 | MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17); |
25 | MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22); |
26 | MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7); |
27 | MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12); |
28 | MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17); |
29 | MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22); |
30 | MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7); |
31 | MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12); |
32 | MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17); |
33 | MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22); |
34 | MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7); |
35 | MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12); |
36 | MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17); |
37 | MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22); |
38 | |
39 | MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5); |
40 | MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9); |
41 | MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14); |
42 | MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20); |
43 | MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5); |
44 | MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9); |
45 | MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14); |
46 | MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20); |
47 | MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5); |
48 | MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9); |
49 | MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14); |
50 | MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20); |
51 | MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5); |
52 | MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9); |
53 | MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14); |
54 | MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20); |
55 | |
56 | MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4); |
57 | MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11); |
58 | MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16); |
59 | MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23); |
60 | MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4); |
61 | MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11); |
62 | MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16); |
63 | MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23); |
64 | MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4); |
65 | MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11); |
66 | MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16); |
67 | MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23); |
68 | MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4); |
69 | MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11); |
70 | MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16); |
71 | MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23); |
72 | |
73 | MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6); |
74 | MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10); |
75 | MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15); |
76 | MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21); |
77 | MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6); |
78 | MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10); |
79 | MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15); |
80 | MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21); |
81 | MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6); |
82 | MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10); |
83 | MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15); |
84 | MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21); |
85 | MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6); |
86 | MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10); |
87 | MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15); |
88 | MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21); |
89 | |
90 | hash[0] += a; |
91 | hash[1] += b; |
92 | hash[2] += c; |
93 | hash[3] += d; |
94 | } |
95 | EXPORT_SYMBOL(md5_transform); |
96 |
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