+ u32 correct_words[16];
+ u32 A = ctx->A;
+ u32 B = ctx->B;
+ u32 C = ctx->C;
+ u32 D = ctx->D;
+ u32 *cwp = correct_words;
+
+ #ifdef BIG_ENDIAN_HOST
+ { int i;
+ const unsigned char *p2, *p1;
+ for(i=0, p1=data, p2=(unsigned char*)correct_words; i < 16; i++, p2 += 4 ) {
+ p2[3] = *p1++;
+ p2[2] = *p1++;
+ p2[1] = *p1++;
+ p2[0] = *p1++;
+ }
+ }
+ #else
+ memcpy( correct_words, data, 64 );
+ #endif
+
+
+#define OP(a, b, c, d, s, T) \
+ do \
+ { \
+ a += FF (b, c, d) + (*cwp++) + T; \
+ a = rol(a, s); \
+ a += b; \
+ } \
+ while (0)
+
+ /* Before we start, one word about the strange constants.
+ They are defined in RFC 1321 as
+
+ T[i] = (int) (4294967296.0 * fabs (sin (i))), i=1..64
+ */
+
+ /* Round 1. */
+ OP (A, B, C, D, 7, 0xd76aa478);
+ OP (D, A, B, C, 12, 0xe8c7b756);
+ OP (C, D, A, B, 17, 0x242070db);
+ OP (B, C, D, A, 22, 0xc1bdceee);
+ OP (A, B, C, D, 7, 0xf57c0faf);
+ OP (D, A, B, C, 12, 0x4787c62a);
+ OP (C, D, A, B, 17, 0xa8304613);
+ OP (B, C, D, A, 22, 0xfd469501);
+ OP (A, B, C, D, 7, 0x698098d8);
+ OP (D, A, B, C, 12, 0x8b44f7af);
+ OP (C, D, A, B, 17, 0xffff5bb1);
+ OP (B, C, D, A, 22, 0x895cd7be);
+ OP (A, B, C, D, 7, 0x6b901122);
+ OP (D, A, B, C, 12, 0xfd987193);
+ OP (C, D, A, B, 17, 0xa679438e);
+ OP (B, C, D, A, 22, 0x49b40821);
+
+#undef OP
+#define OP(f, a, b, c, d, k, s, T) \
+ do \
+ { \
+ a += f (b, c, d) + correct_words[k] + T; \
+ a = rol(a, s); \
+ a += b; \
+ } \
+ while (0)
+
+ /* Round 2. */
+ OP (FG, A, B, C, D, 1, 5, 0xf61e2562);
+ OP (FG, D, A, B, C, 6, 9, 0xc040b340);
+ OP (FG, C, D, A, B, 11, 14, 0x265e5a51);
+ OP (FG, B, C, D, A, 0, 20, 0xe9b6c7aa);
+ OP (FG, A, B, C, D, 5, 5, 0xd62f105d);
+ OP (FG, D, A, B, C, 10, 9, 0x02441453);
+ OP (FG, C, D, A, B, 15, 14, 0xd8a1e681);
+ OP (FG, B, C, D, A, 4, 20, 0xe7d3fbc8);
+ OP (FG, A, B, C, D, 9, 5, 0x21e1cde6);
+ OP (FG, D, A, B, C, 14, 9, 0xc33707d6);
+ OP (FG, C, D, A, B, 3, 14, 0xf4d50d87);
+ OP (FG, B, C, D, A, 8, 20, 0x455a14ed);
+ OP (FG, A, B, C, D, 13, 5, 0xa9e3e905);
+ OP (FG, D, A, B, C, 2, 9, 0xfcefa3f8);
+ OP (FG, C, D, A, B, 7, 14, 0x676f02d9);
+ OP (FG, B, C, D, A, 12, 20, 0x8d2a4c8a);
+
+ /* Round 3. */
+ OP (FH, A, B, C, D, 5, 4, 0xfffa3942);
+ OP (FH, D, A, B, C, 8, 11, 0x8771f681);
+ OP (FH, C, D, A, B, 11, 16, 0x6d9d6122);
+ OP (FH, B, C, D, A, 14, 23, 0xfde5380c);
+ OP (FH, A, B, C, D, 1, 4, 0xa4beea44);
+ OP (FH, D, A, B, C, 4, 11, 0x4bdecfa9);
+ OP (FH, C, D, A, B, 7, 16, 0xf6bb4b60);
+ OP (FH, B, C, D, A, 10, 23, 0xbebfbc70);
+ OP (FH, A, B, C, D, 13, 4, 0x289b7ec6);
+ OP (FH, D, A, B, C, 0, 11, 0xeaa127fa);
+ OP (FH, C, D, A, B, 3, 16, 0xd4ef3085);
+ OP (FH, B, C, D, A, 6, 23, 0x04881d05);
+ OP (FH, A, B, C, D, 9, 4, 0xd9d4d039);
+ OP (FH, D, A, B, C, 12, 11, 0xe6db99e5);
+ OP (FH, C, D, A, B, 15, 16, 0x1fa27cf8);
+ OP (FH, B, C, D, A, 2, 23, 0xc4ac5665);
+
+ /* Round 4. */
+ OP (FI, A, B, C, D, 0, 6, 0xf4292244);
+ OP (FI, D, A, B, C, 7, 10, 0x432aff97);
+ OP (FI, C, D, A, B, 14, 15, 0xab9423a7);
+ OP (FI, B, C, D, A, 5, 21, 0xfc93a039);
+ OP (FI, A, B, C, D, 12, 6, 0x655b59c3);
+ OP (FI, D, A, B, C, 3, 10, 0x8f0ccc92);
+ OP (FI, C, D, A, B, 10, 15, 0xffeff47d);
+ OP (FI, B, C, D, A, 1, 21, 0x85845dd1);
+ OP (FI, A, B, C, D, 8, 6, 0x6fa87e4f);
+ OP (FI, D, A, B, C, 15, 10, 0xfe2ce6e0);
+ OP (FI, C, D, A, B, 6, 15, 0xa3014314);
+ OP (FI, B, C, D, A, 13, 21, 0x4e0811a1);
+ OP (FI, A, B, C, D, 4, 6, 0xf7537e82);
+ OP (FI, D, A, B, C, 11, 10, 0xbd3af235);
+ OP (FI, C, D, A, B, 2, 15, 0x2ad7d2bb);
+ OP (FI, B, C, D, A, 9, 21, 0xeb86d391);
+
+ /* Put checksum in context given as argument. */
+ ctx->A += A;
+ ctx->B += B;
+ ctx->C += C;
+ ctx->D += D;
+}
projects / claws.git / commitdiff