2 * Modified from Polarssl here
3 * http://polarssl.org/show_source?file=md5
11 #define GET_ULONG_LE(n, b, i) \
13 (n) = ((unsigned long)(b)[i]) \
14 | ((unsigned long)(b)[(i) + 1] << 8) \
15 | ((unsigned long)(b)[(i) + 2] << 16) \
16 | ((unsigned long)(b)[(i) + 3] << 24); \
19 #define PUT_ULONG_LE(n, b, i) \
21 (b)[i] = (unsigned char)(n); \
22 (b)[(i) + 1] = (unsigned char)((n) >> 8); \
23 (b)[(i) + 2] = (unsigned char)((n) >> 16); \
24 (b)[(i) + 3] = (unsigned char)((n) >> 24); \
27 static const unsigned char md5_padding[64] = {
28 0x80, 0, 0, 0, 0, 0, 0, 0,
29 0, 0, 0, 0, 0, 0, 0, 0,
30 0, 0, 0, 0, 0, 0, 0, 0,
31 0, 0, 0, 0, 0, 0, 0, 0,
32 0, 0, 0, 0, 0, 0, 0, 0,
33 0, 0, 0, 0, 0, 0, 0, 0,
34 0, 0, 0, 0, 0, 0, 0, 0,
35 0, 0, 0, 0, 0, 0, 0, 0,
38 static const unsigned long state_init[] = {
39 0, 0, 0x67452301, 0xEFCDAB89, 0x98BADCFE, 0x10325476
43 md5_process(unsigned long *state, const unsigned char *data)
45 unsigned long X[16], A, B, C, D;
48 for (v = 0; v < 16; v++)
49 GET_ULONG_LE(X[v], data, v << 2);
51 #define S(x, n) ((x << n) | ((x & 0xFFFFFFFF) >> (32 - n)))
53 #define P(a, b, c, d, k, s, t) { a += F(b, c, d) + X[k] + t; a = S(a, s) + b; }
60 #define F(x, y, z) (z ^ (x & (y ^ z)))
62 P(A, B, C, D, 0, 7, 0xD76AA478);
63 P(D, A, B, C, 1, 12, 0xE8C7B756);
64 P(C, D, A, B, 2, 17, 0x242070DB);
65 P(B, C, D, A, 3, 22, 0xC1BDCEEE);
66 P(A, B, C, D, 4, 7, 0xF57C0FAF);
67 P(D, A, B, C, 5, 12, 0x4787C62A);
68 P(C, D, A, B, 6, 17, 0xA8304613);
69 P(B, C, D, A, 7, 22, 0xFD469501);
70 P(A, B, C, D, 8, 7, 0x698098D8);
71 P(D, A, B, C, 9, 12, 0x8B44F7AF);
72 P(C, D, A, B, 10, 17, 0xFFFF5BB1);
73 P(B, C, D, A, 11, 22, 0x895CD7BE);
74 P(A, B, C, D, 12, 7, 0x6B901122);
75 P(D, A, B, C, 13, 12, 0xFD987193);
76 P(C, D, A, B, 14, 17, 0xA679438E);
77 P(B, C, D, A, 15, 22, 0x49B40821);
81 #define F(x, y, z) (y ^ (z & (x ^ y)))
83 P(A, B, C, D, 1, 5, 0xF61E2562);
84 P(D, A, B, C, 6, 9, 0xC040B340);
85 P(C, D, A, B, 11, 14, 0x265E5A51);
86 P(B, C, D, A, 0, 20, 0xE9B6C7AA);
87 P(A, B, C, D, 5, 5, 0xD62F105D);
88 P(D, A, B, C, 10, 9, 0x02441453);
89 P(C, D, A, B, 15, 14, 0xD8A1E681);
90 P(B, C, D, A, 4, 20, 0xE7D3FBC8);
91 P(A, B, C, D, 9, 5, 0x21E1CDE6);
92 P(D, A, B, C, 14, 9, 0xC33707D6);
93 P(C, D, A, B, 3, 14, 0xF4D50D87);
94 P(B, C, D, A, 8, 20, 0x455A14ED);
95 P(A, B, C, D, 13, 5, 0xA9E3E905);
96 P(D, A, B, C, 2, 9, 0xFCEFA3F8);
97 P(C, D, A, B, 7, 14, 0x676F02D9);
98 P(B, C, D, A, 12, 20, 0x8D2A4C8A);
102 #define F(x, y, z) (x ^ y ^ z)
104 P(A, B, C, D, 5, 4, 0xFFFA3942);
105 P(D, A, B, C, 8, 11, 0x8771F681);
106 P(C, D, A, B, 11, 16, 0x6D9D6122);
107 P(B, C, D, A, 14, 23, 0xFDE5380C);
108 P(A, B, C, D, 1, 4, 0xA4BEEA44);
109 P(D, A, B, C, 4, 11, 0x4BDECFA9);
110 P(C, D, A, B, 7, 16, 0xF6BB4B60);
111 P(B, C, D, A, 10, 23, 0xBEBFBC70);
112 P(A, B, C, D, 13, 4, 0x289B7EC6);
113 P(D, A, B, C, 0, 11, 0xEAA127FA);
114 P(C, D, A, B, 3, 16, 0xD4EF3085);
115 P(B, C, D, A, 6, 23, 0x04881D05);
116 P(A, B, C, D, 9, 4, 0xD9D4D039);
117 P(D, A, B, C, 12, 11, 0xE6DB99E5);
118 P(C, D, A, B, 15, 16, 0x1FA27CF8);
119 P(B, C, D, A, 2, 23, 0xC4AC5665);
123 #define F(x, y, z) (y ^ (x | ~z))
125 P(A, B, C, D, 0, 6, 0xF4292244);
126 P(D, A, B, C, 7, 10, 0x432AFF97);
127 P(C, D, A, B, 14, 15, 0xAB9423A7);
128 P(B, C, D, A, 5, 21, 0xFC93A039);
129 P(A, B, C, D, 12, 6, 0x655B59C3);
130 P(D, A, B, C, 3, 10, 0x8F0CCC92);
131 P(C, D, A, B, 10, 15, 0xFFEFF47D);
132 P(B, C, D, A, 1, 21, 0x85845DD1);
133 P(A, B, C, D, 8, 6, 0x6FA87E4F);
134 P(D, A, B, C, 15, 10, 0xFE2CE6E0);
135 P(C, D, A, B, 6, 15, 0xA3014314);
136 P(B, C, D, A, 13, 21, 0x4E0811A1);
137 P(A, B, C, D, 4, 6, 0xF7537E82);
138 P(D, A, B, C, 11, 10, 0xBD3AF235);
139 P(C, D, A, B, 2, 15, 0x2AD7D2BB);
140 P(B, C, D, A, 9, 21, 0xEB86D391);
151 void md5_update(unsigned long *state, unsigned char *buffer,
152 const unsigned char *input, int ilen)
160 left = state[0] & 0x3F;
164 state[0] &= 0xFFFFFFFF;
166 if (state[0] < (unsigned long)ilen)
169 if (left && ilen >= fill) {
170 memcpy(buffer + left, input, fill);
171 md5_process(&state[2], buffer);
178 md5_process(&state[2], input);
184 memcpy(buffer + left, input, ilen);
188 MD5(const unsigned char *input, int ilen, unsigned char *output)
190 unsigned long last, padn;
191 unsigned long high, low;
192 unsigned char msglen[8];
193 unsigned long state[6];
194 unsigned char buffer[64];
196 memcpy(&state[0], &state_init[0], sizeof(state_init));
198 md5_update(state, buffer, input, ilen);
200 high = (state[0] >> 29) | (state[1] << 3);
203 PUT_ULONG_LE(low, msglen, 0);
204 PUT_ULONG_LE(high, msglen, 4);
206 last = state[0] & 0x3F;
207 padn = (last < 56) ? (56 - last) : (120 - last);
209 md5_update(state, buffer, md5_padding, padn);
210 md5_update(state, buffer, msglen, 8);
212 PUT_ULONG_LE(state[2], output, 0);
213 PUT_ULONG_LE(state[3], output, 4);
214 PUT_ULONG_LE(state[4], output, 8);
215 PUT_ULONG_LE(state[5], output, 12);