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40 #define A m->counter[0]
41 #define B m->counter[1]
42 #define C m->counter[2]
43 #define D m->counter[3]
47 MD4_Init (struct md4 *m)
58 #define F(x,y,z) CRAYFIX((x & y) | (~x & z))
59 #define G(x,y,z) ((x & y) | (x & z) | (y & z))
60 #define H(x,y,z) (x ^ y ^ z)
62 #define DOIT(a,b,c,d,k,s,i,OP) \
63 a = cshift(a + OP(b,c,d) + X[k] + i, s)
65 #define DO1(a,b,c,d,k,s,i) DOIT(a,b,c,d,k,s,i,F)
66 #define DO2(a,b,c,d,k,s,i) DOIT(a,b,c,d,k,s,i,G)
67 #define DO3(a,b,c,d,k,s,i) DOIT(a,b,c,d,k,s,i,H)
70 calc (struct md4 *m, uint32_t *data)
72 uint32_t AA, BB, CC, DD;
103 DO2(A,B,C,D,0,3,0x5A827999);
104 DO2(D,A,B,C,4,5,0x5A827999);
105 DO2(C,D,A,B,8,9,0x5A827999);
106 DO2(B,C,D,A,12,13,0x5A827999);
108 DO2(A,B,C,D,1,3,0x5A827999);
109 DO2(D,A,B,C,5,5,0x5A827999);
110 DO2(C,D,A,B,9,9,0x5A827999);
111 DO2(B,C,D,A,13,13,0x5A827999);
113 DO2(A,B,C,D,2,3,0x5A827999);
114 DO2(D,A,B,C,6,5,0x5A827999);
115 DO2(C,D,A,B,10,9,0x5A827999);
116 DO2(B,C,D,A,14,13,0x5A827999);
118 DO2(A,B,C,D,3,3,0x5A827999);
119 DO2(D,A,B,C,7,5,0x5A827999);
120 DO2(C,D,A,B,11,9,0x5A827999);
121 DO2(B,C,D,A,15,13,0x5A827999);
125 DO3(A,B,C,D,0,3,0x6ED9EBA1);
126 DO3(D,A,B,C,8,9,0x6ED9EBA1);
127 DO3(C,D,A,B,4,11,0x6ED9EBA1);
128 DO3(B,C,D,A,12,15,0x6ED9EBA1);
130 DO3(A,B,C,D,2,3,0x6ED9EBA1);
131 DO3(D,A,B,C,10,9,0x6ED9EBA1);
132 DO3(C,D,A,B,6,11,0x6ED9EBA1);
133 DO3(B,C,D,A,14,15,0x6ED9EBA1);
135 DO3(A,B,C,D,1,3,0x6ED9EBA1);
136 DO3(D,A,B,C,9,9,0x6ED9EBA1);
137 DO3(C,D,A,B,5,11,0x6ED9EBA1);
138 DO3(B,C,D,A,13,15,0x6ED9EBA1);
140 DO3(A,B,C,D,3,3,0x6ED9EBA1);
141 DO3(D,A,B,C,11,9,0x6ED9EBA1);
142 DO3(C,D,A,B,7,11,0x6ED9EBA1);
143 DO3(B,C,D,A,15,15,0x6ED9EBA1);
152 * From `Performance analysis of MD5' by Joseph D. Touch <touch@isi.edu>
155 #if defined(WORDS_BIGENDIAN)
156 static inline uint32_t
157 swap_uint32_t (uint32_t t)
159 uint32_t temp1, temp2;
161 temp1 = cshift(t, 16);
166 return temp1 | temp2;
176 MD4_Update (struct md4 *m, const void *v, size_t len)
178 const unsigned char *p = v;
179 size_t old_sz = m->sz[0];
183 if (m->sz[0] < old_sz)
185 offset = (old_sz / 8) % 64;
187 size_t l = min(len, 64 - offset);
188 memcpy(m->save + offset, p, l);
193 #if defined(WORDS_BIGENDIAN)
195 uint32_t current[16];
196 struct x32 *us = (struct x32*)m->save;
197 for(i = 0; i < 8; i++){
198 current[2*i+0] = swap_uint32_t(us[i].a);
199 current[2*i+1] = swap_uint32_t(us[i].b);
203 calc(m, (uint32_t*)m->save);
212 MD4_Final (void *res, struct md4 *m)
214 unsigned char zeros[72];
215 unsigned offset = (m->sz[0] / 8) % 64;
216 unsigned int dstart = (120 - offset - 1) % 64 + 1;
219 memset (zeros + 1, 0, sizeof(zeros) - 1);
220 zeros[dstart+0] = (m->sz[0] >> 0) & 0xff;
221 zeros[dstart+1] = (m->sz[0] >> 8) & 0xff;
222 zeros[dstart+2] = (m->sz[0] >> 16) & 0xff;
223 zeros[dstart+3] = (m->sz[0] >> 24) & 0xff;
224 zeros[dstart+4] = (m->sz[1] >> 0) & 0xff;
225 zeros[dstart+5] = (m->sz[1] >> 8) & 0xff;
226 zeros[dstart+6] = (m->sz[1] >> 16) & 0xff;
227 zeros[dstart+7] = (m->sz[1] >> 24) & 0xff;
228 MD4_Update (m, zeros, dstart + 8);
231 unsigned char *r = (unsigned char *)res;
233 for (i = 0; i < 4; ++i) {
234 r[4*i] = m->counter[i] & 0xFF;
235 r[4*i+1] = (m->counter[i] >> 8) & 0xFF;
236 r[4*i+2] = (m->counter[i] >> 16) & 0xFF;
237 r[4*i+3] = (m->counter[i] >> 24) & 0xFF;
243 uint32_t *r = (uint32_t *)res;
245 for (i = 0; i < 4; ++i)
246 r[i] = swap_uint32_t (m->counter[i]);