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author | Laurent Bercot <ska-skaware@skarnet.org> | 2014-09-18 18:55:44 +0000 |
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committer | Laurent Bercot <ska-skaware@skarnet.org> | 2014-09-18 18:55:44 +0000 |
commit | 3534b428629be185e096be99e3bd5fdfe32d5544 (patch) | |
tree | 210ef3198ed66bc7f7b7bf6a85e4579f455e5a36 /src/libstdcrypto/md5_transform.c | |
download | skalibs-3534b428629be185e096be99e3bd5fdfe32d5544.tar.xz |
initial commit with rc for skalibs-2.0.0.0
Diffstat (limited to 'src/libstdcrypto/md5_transform.c')
-rw-r--r-- | src/libstdcrypto/md5_transform.c | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/src/libstdcrypto/md5_transform.c b/src/libstdcrypto/md5_transform.c new file mode 100644 index 0000000..2449b58 --- /dev/null +++ b/src/libstdcrypto/md5_transform.c @@ -0,0 +1,91 @@ +/* ISC license. */ + +#include <skalibs/uint32.h> +#include "md5-internal.h" + +/* #define F1(x, y, z) (x & y | ~x & z) */ +#define F1(x, y, z) (z ^ (x & (y ^ z))) +#define F2(x, y, z) F1(z, x, y) +#define F3(x, y, z) (x ^ y ^ z) +#define F4(x, y, z) (y ^ (x | ~z)) + +#define MD5STEP(f, w, x, y, z, data, s) \ + ( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x ) + +void md5_transform (uint32 *buf /* 4 uint32s */, uint32 const *in /* 16 uint32s */) +{ + register uint32 a = buf[0], b = buf[1], c = buf[2], d = buf[3] ; + + MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7) ; + MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12) ; + MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17) ; + MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22) ; + MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7) ; + MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12) ; + MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17) ; + MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22) ; + MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7) ; + MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12) ; + MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17) ; + MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22) ; + MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7) ; + MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12) ; + MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17) ; + MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22) ; + + MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5) ; + MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9) ; + MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14) ; + MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20) ; + MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5) ; + MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9) ; + MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14) ; + MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20) ; + MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5) ; + MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9) ; + MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14) ; + MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20) ; + MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5) ; + MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9) ; + MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14) ; + MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20) ; + + MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4) ; + MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11) ; + MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16) ; + MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23) ; + MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4) ; + MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11) ; + MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16) ; + MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23) ; + MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4) ; + MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11) ; + MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16) ; + MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23) ; + MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4) ; + MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11) ; + MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16) ; + MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23) ; + + MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6) ; + MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10) ; + MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15) ; + MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21) ; + MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6) ; + MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10) ; + MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15) ; + MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21) ; + MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6) ; + MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10) ; + MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15) ; + MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21) ; + MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6) ; + MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10) ; + MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15) ; + MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21) ; + + buf[0] += a ; + buf[1] += b ; + buf[2] += c ; + buf[3] += d ; +} |