md5.c revision fd00954ca87b3b083ec6987e593a16ff01913fe8
1ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe/* 2ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe * Shamelessly lifted from the 2.6 kernel (crypto/md5.c) 3ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe */ 4ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe#include <string.h> 5ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe#include <stdint.h> 6ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe#include "md5.h" 7ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe 8ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboestatic void md5_transform(uint32_t *hash, uint32_t const *in) 9ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe{ 10ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe uint32_t a, b, c, d; 11ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe 12fd00954ca87b3b083ec6987e593a16ff01913fe8Jens Axboe a = hash[0]; 13fd00954ca87b3b083ec6987e593a16ff01913fe8Jens Axboe b = hash[1]; 14fd00954ca87b3b083ec6987e593a16ff01913fe8Jens Axboe c = hash[2]; 15fd00954ca87b3b083ec6987e593a16ff01913fe8Jens Axboe d = hash[3]; 16ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe 17ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7); 18ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12); 19ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17); 20ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22); 21ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7); 22ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12); 23ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17); 24ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22); 25ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7); 26ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12); 27ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17); 28ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22); 29ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7); 30ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12); 31ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17); 32ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22); 33ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe 34ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5); 35ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9); 36ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14); 37ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20); 38ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5); 39ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9); 40ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14); 41ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20); 42ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5); 43ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9); 44ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14); 45ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20); 46ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5); 47ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9); 48ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14); 49ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20); 50ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe 51ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4); 52ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11); 53ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16); 54ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23); 55ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4); 56ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11); 57ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16); 58ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23); 59ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4); 60ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11); 61ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16); 62ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23); 63ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4); 64ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11); 65ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16); 66ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23); 67ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe 68ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6); 69ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10); 70ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15); 71ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21); 72ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6); 73ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10); 74ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15); 75ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21); 76ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6); 77ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10); 78ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15); 79ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21); 80ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6); 81ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10); 82ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15); 83ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21); 84ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe 85fd00954ca87b3b083ec6987e593a16ff01913fe8Jens Axboe hash[0] += a; 86fd00954ca87b3b083ec6987e593a16ff01913fe8Jens Axboe hash[1] += b; 87fd00954ca87b3b083ec6987e593a16ff01913fe8Jens Axboe hash[2] += c; 88fd00954ca87b3b083ec6987e593a16ff01913fe8Jens Axboe hash[3] += d; 89ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe} 90ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe 91ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboevoid md5_update(struct md5_ctx *mctx, const uint8_t *data, unsigned int len) 92ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe{ 93ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe const uint32_t avail = sizeof(mctx->block) - (mctx->byte_count & 0x3f); 94ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe 95ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe mctx->byte_count += len; 96ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe 97ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe if (avail > len) { 98ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe memcpy((char *)mctx->block + (sizeof(mctx->block) - avail), 99ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe data, len); 100ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe return; 101ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe } 102ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe 103ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe memcpy((char *)mctx->block + (sizeof(mctx->block) - avail), 104ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe data, avail); 105ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe 106ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe md5_transform(mctx->hash, mctx->block); 107ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe data += avail; 108ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe len -= avail; 109ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe 110ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe while (len >= sizeof(mctx->block)) { 111ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe memcpy(mctx->block, data, sizeof(mctx->block)); 112ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe md5_transform(mctx->hash, mctx->block); 113ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe data += sizeof(mctx->block); 114ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe len -= sizeof(mctx->block); 115ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe } 116ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe 117ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe memcpy(mctx->block, data, len); 118ebac4655dd3624f3296ff83be48e0cdc02852f1Jens Axboe} 119