Crypto++ 8.1 Free C++ class library of cryptographic schemes

md5.cpp
1 // md5.cpp - modified by Wei Dai from Colin Plumb's public domain md5.c
2 // any modifications are placed in the public domain
3
4 #include "pch.h"
5
6 #define CRYPTOPP_ENABLE_NAMESPACE_WEAK 1
7 #include "md5.h"
8 #include "misc.h"
9
10 NAMESPACE_BEGIN(CryptoPP)
11 NAMESPACE_BEGIN(Weak1)
12
13 #if defined(CRYPTOPP_DEBUG) && !defined(CRYPTOPP_DOXYGEN_PROCESSING)
14 void MD5_TestInstantiations()
15 {
16 MD5 x;
17 }
18 #endif
19
20 void MD5::InitState(HashWordType *state)
21 {
22 state[0] = 0x67452301L;
23 state[1] = 0xefcdab89L;
24 state[2] = 0x98badcfeL;
25 state[3] = 0x10325476L;
26 }
27
28 void MD5::Transform (word32 *digest, const word32 *data)
29 {
30 CRYPTOPP_ASSERT(digest);
31 CRYPTOPP_ASSERT(data);
32
33 // #define F1(x, y, z) (x & y | ~x & z)
34 #define F1(x, y, z) (z ^ (x & (y ^ z)))
35 #define F2(x, y, z) F1(z, x, y)
36 #define F3(x, y, z) (x ^ y ^ z)
37 #define F4(x, y, z) (y ^ (x | ~z))
38
39 #define MD5STEP(f, w, x, y, z, data, s) \
40 w = rotlFixed(w + f(x, y, z) + data, s) + x
41
42 word32 a, b, c, d;
43
44 a=digest[0];
45 b=digest[1];
46 c=digest[2];
47 d=digest[3];
48
49 MD5STEP(F1, a, b, c, d, data[0] + 0xd76aa478, 7);
50 MD5STEP(F1, d, a, b, c, data[1] + 0xe8c7b756, 12);
51 MD5STEP(F1, c, d, a, b, data[2] + 0x242070db, 17);
52 MD5STEP(F1, b, c, d, a, data[3] + 0xc1bdceee, 22);
53 MD5STEP(F1, a, b, c, d, data[4] + 0xf57c0faf, 7);
54 MD5STEP(F1, d, a, b, c, data[5] + 0x4787c62a, 12);
55 MD5STEP(F1, c, d, a, b, data[6] + 0xa8304613, 17);
56 MD5STEP(F1, b, c, d, a, data[7] + 0xfd469501, 22);
57 MD5STEP(F1, a, b, c, d, data[8] + 0x698098d8, 7);
58 MD5STEP(F1, d, a, b, c, data[9] + 0x8b44f7af, 12);
59 MD5STEP(F1, c, d, a, b, data[10] + 0xffff5bb1, 17);
60 MD5STEP(F1, b, c, d, a, data[11] + 0x895cd7be, 22);
61 MD5STEP(F1, a, b, c, d, data[12] + 0x6b901122, 7);
62 MD5STEP(F1, d, a, b, c, data[13] + 0xfd987193, 12);
63 MD5STEP(F1, c, d, a, b, data[14] + 0xa679438e, 17);
64 MD5STEP(F1, b, c, d, a, data[15] + 0x49b40821, 22);
65
66 MD5STEP(F2, a, b, c, d, data[1] + 0xf61e2562, 5);
67 MD5STEP(F2, d, a, b, c, data[6] + 0xc040b340, 9);
68 MD5STEP(F2, c, d, a, b, data[11] + 0x265e5a51, 14);
69 MD5STEP(F2, b, c, d, a, data[0] + 0xe9b6c7aa, 20);
70 MD5STEP(F2, a, b, c, d, data[5] + 0xd62f105d, 5);
71 MD5STEP(F2, d, a, b, c, data[10] + 0x02441453, 9);
72 MD5STEP(F2, c, d, a, b, data[15] + 0xd8a1e681, 14);
73 MD5STEP(F2, b, c, d, a, data[4] + 0xe7d3fbc8, 20);
74 MD5STEP(F2, a, b, c, d, data[9] + 0x21e1cde6, 5);
75 MD5STEP(F2, d, a, b, c, data[14] + 0xc33707d6, 9);
76 MD5STEP(F2, c, d, a, b, data[3] + 0xf4d50d87, 14);
77 MD5STEP(F2, b, c, d, a, data[8] + 0x455a14ed, 20);
78 MD5STEP(F2, a, b, c, d, data[13] + 0xa9e3e905, 5);
79 MD5STEP(F2, d, a, b, c, data[2] + 0xfcefa3f8, 9);
80 MD5STEP(F2, c, d, a, b, data[7] + 0x676f02d9, 14);
81 MD5STEP(F2, b, c, d, a, data[12] + 0x8d2a4c8a, 20);
82
83 MD5STEP(F3, a, b, c, d, data[5] + 0xfffa3942, 4);
84 MD5STEP(F3, d, a, b, c, data[8] + 0x8771f681, 11);
85 MD5STEP(F3, c, d, a, b, data[11] + 0x6d9d6122, 16);
86 MD5STEP(F3, b, c, d, a, data[14] + 0xfde5380c, 23);
87 MD5STEP(F3, a, b, c, d, data[1] + 0xa4beea44, 4);
88 MD5STEP(F3, d, a, b, c, data[4] + 0x4bdecfa9, 11);
89 MD5STEP(F3, c, d, a, b, data[7] + 0xf6bb4b60, 16);
90 MD5STEP(F3, b, c, d, a, data[10] + 0xbebfbc70, 23);
91 MD5STEP(F3, a, b, c, d, data[13] + 0x289b7ec6, 4);
92 MD5STEP(F3, d, a, b, c, data[0] + 0xeaa127fa, 11);
93 MD5STEP(F3, c, d, a, b, data[3] + 0xd4ef3085, 16);
94 MD5STEP(F3, b, c, d, a, data[6] + 0x04881d05, 23);
95 MD5STEP(F3, a, b, c, d, data[9] + 0xd9d4d039, 4);
96 MD5STEP(F3, d, a, b, c, data[12] + 0xe6db99e5, 11);
97 MD5STEP(F3, c, d, a, b, data[15] + 0x1fa27cf8, 16);
98 MD5STEP(F3, b, c, d, a, data[2] + 0xc4ac5665, 23);
99
100 MD5STEP(F4, a, b, c, d, data[0] + 0xf4292244, 6);
101 MD5STEP(F4, d, a, b, c, data[7] + 0x432aff97, 10);
102 MD5STEP(F4, c, d, a, b, data[14] + 0xab9423a7, 15);
103 MD5STEP(F4, b, c, d, a, data[5] + 0xfc93a039, 21);
104 MD5STEP(F4, a, b, c, d, data[12] + 0x655b59c3, 6);
105 MD5STEP(F4, d, a, b, c, data[3] + 0x8f0ccc92, 10);
106 MD5STEP(F4, c, d, a, b, data[10] + 0xffeff47d, 15);
107 MD5STEP(F4, b, c, d, a, data[1] + 0x85845dd1, 21);
108 MD5STEP(F4, a, b, c, d, data[8] + 0x6fa87e4f, 6);
109 MD5STEP(F4, d, a, b, c, data[15] + 0xfe2ce6e0, 10);
110 MD5STEP(F4, c, d, a, b, data[6] + 0xa3014314, 15);
111 MD5STEP(F4, b, c, d, a, data[13] + 0x4e0811a1, 21);
112 MD5STEP(F4, a, b, c, d, data[4] + 0xf7537e82, 6);
113 MD5STEP(F4, d, a, b, c, data[11] + 0xbd3af235, 10);
114 MD5STEP(F4, c, d, a, b, data[2] + 0x2ad7d2bb, 15);
115 MD5STEP(F4, b, c, d, a, data[9] + 0xeb86d391, 21);
116
117 digest[0]+=a;
118 digest[1]+=b;
119 digest[2]+=c;
120 digest[3]+=d;
121 }
122
123 NAMESPACE_END // Weak
124 NAMESPACE_END // CryptoPP
misc.h
Utility functions for the Crypto++ library.
pch.h
Precompiled header file.
CRYPTOPP_ASSERT
#define CRYPTOPP_ASSERT(exp)
Debugging and diagnostic assertion.
Definition: trap.h:69
CryptoPP
Crypto++ library namespace.