@@ -9,18 +9,12 @@ * the packaging of this file. */ #include "config.h" -#include - #import "OFHash.h" -#import "OFAutoreleasePool.h" #import "OFExceptions.h" -#import "macros.h" - -int _OFHashing_reference; @implementation OFHash - (void)updateWithBuffer: (const char*)buffer ofSize: (size_t)size { @@ -36,468 +30,6 @@ - (BOOL)calculated { return calculated; } -@end - -/* - * MD5 - */ - -/* The four MD5 core functions - F1 is optimized somewhat */ -#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)) - -/* This is the central step in the MD5 algorithm. */ -#define MD5STEP(f, w, x, y, z, data, s) \ - (w += f(x, y, z) + data, w = w << s | w >> (32 - s), w += x) - -static inline void -md5_transform(uint32_t buf[4], const uint32_t in[16]) -{ - register uint32_t a, b, c, d; - - 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; -} - -@implementation OFMD5Hash -+ md5Hash -{ - return [[[self alloc] init] autorelease]; -} - -- init -{ - self = [super init]; - - buf[0] = 0x67452301; - buf[1] = 0xEFCDAB89; - buf[2] = 0x98BADCFE; - buf[3] = 0x10325476; - - return self; -} - -- (void)updateWithBuffer: (const char*)buffer - ofSize: (size_t)size -{ - uint32_t t; - - if (size == 0) - return; - - if (calculated) - @throw [OFHashAlreadyCalculatedException newWithClass: isa]; - - /* Update bitcount */ - t = bits[0]; - if ((bits[0] = t + ((uint32_t)size << 3)) < t) - /* Carry from low to high */ - bits[1]++; - bits[1] += size >> 29; - - /* Bytes already in shsInfo->data */ - t = (t >> 3) & 0x3F; - - /* Handle any leading odd-sized chunks */ - if (t) { - uint8_t *p = in + t; - - t = 64 - t; - - if (size < t) { - memcpy(p, buffer, size); - return; - } - - memcpy(p, buffer, t); - OF_BSWAP32_V_IF_BE((uint32_t*)in, 16); - md5_transform(buf, (uint32_t*)in); - - buffer += t; - size -= t; - } - - /* Process data in 64-byte chunks */ - while (size >= 64) { - memcpy(in, buffer, 64); - OF_BSWAP32_V_IF_BE((uint32_t*)in, 16); - md5_transform(buf, (uint32_t*)in); - - buffer += 64; - size -= 64; - } - - /* Handle any remaining bytes of data. */ - memcpy(in, buffer, size); -} - -- (uint8_t*)digest -{ - uint8_t *p; - size_t count; - - if (calculated) - return (uint8_t*)buf; - - /* Compute number of bytes mod 64 */ - count = (bits[0] >> 3) & 0x3F; - - /* - * Set the first char of padding to 0x80. This is safe since there is - * always at least one byte free - */ - p = in + count; - *p++ = 0x80; - - /* Bytes of padding needed to make 64 bytes */ - count = 64 - 1 - count; - - /* Pad out to 56 mod 64 */ - if (count < 8) { - /* Two lots of padding: Pad the first block to 64 bytes */ - memset(p, 0, count); - OF_BSWAP32_V_IF_BE((uint32_t*)in, 16); - md5_transform(buf, (uint32_t*)in); - - /* Now fill the next block with 56 bytes */ - memset(in, 0, 56); - } else { - /* Pad block to 56 bytes */ - memset(p, 0, count - 8); - } - OF_BSWAP32_V_IF_BE((uint32_t*)in, 14); - - /* Append length in bits and transform */ - ((uint32_t*)in)[14] = bits[0]; - ((uint32_t*)in)[15] = bits[1]; - - md5_transform(buf, (uint32_t*)in); - OF_BSWAP32_V_IF_BE(buf, 4); - - calculated = YES; - - return (uint8_t*)buf; -} -@end - -#undef F1 -#undef F2 -#undef F3 -#undef F4 -#undef MD5STEP - -/* - * SHA1 - */ - -/* blk0() and blk() perform the initial expand. */ -#ifndef OF_BIG_ENDIAN -#define blk0(i) \ - (block->l[i] = (OF_ROL(block->l[i], 24) & 0xFF00FF00) | \ - (OF_ROL(block->l[i], 8) & 0x00FF00FF)) -#else -#define blk0(i) block->l[i] -#endif -#define blk(i) \ - (block->l[i & 15] = OF_ROL(block->l[(i + 13) & 15] ^ \ - block->l[(i + 8) & 15] ^ block->l[(i + 2) & 15] ^ \ - block->l[i & 15], 1)) - -/* (R0+R1), R2, R3, R4 are the different operations used in SHA1 */ -#define R0(v, w, x, y, z, i) \ - z += ((w & (x ^ y)) ^ y) + blk0(i) + 0x5A827999 + OF_ROL(v, 5); \ - w = OF_ROL(w, 30); -#define R1(v, w, x, y, z, i) \ - z += ((w & (x ^ y)) ^ y) + blk(i) + 0x5A827999 + OF_ROL(v, 5); \ - w = OF_ROL(w, 30); -#define R2(v, w, x, y, z, i) \ - z += (w ^ x ^ y) + blk(i) + 0x6ED9EBA1 + OF_ROL(v, 5); \ - w = OF_ROL(w, 30); -#define R3(v, w, x, y, z, i) \ - z += (((w | x) & y) | (w & x)) + blk(i) + 0x8F1BBCDC + OF_ROL(v, 5); \ - w = OF_ROL(w, 30); -#define R4(v, w, x, y, z, i) \ - z += (w ^ x ^ y) + blk(i) + 0xCA62C1D6 + OF_ROL(v, 5); \ - w = OF_ROL(w, 30); - -/// \cond internal -typedef union { - char c[64]; - uint32_t l[16]; -} sha1_c64l16_t; -/// \endcond - -static inline void -sha1_transform(uint32_t state[5], const char buffer[64]) -{ - uint32_t a, b, c, d, e; - char workspace[64]; - sha1_c64l16_t *block; - - block = (sha1_c64l16_t*)workspace; - memcpy(block, buffer, 64); - - /* Copy state[] to working vars */ - a = state[0]; - b = state[1]; - c = state[2]; - d = state[3]; - e = state[4]; - - /* 4 rounds of 20 operations each. Loop unrolled. */ - R0(a,b,c,d,e, 0); R0(e,a,b,c,d, 1); R0(d,e,a,b,c, 2); R0(c,d,e,a,b, 3); - R0(b,c,d,e,a, 4); R0(a,b,c,d,e, 5); R0(e,a,b,c,d, 6); R0(d,e,a,b,c, 7); - R0(c,d,e,a,b, 8); R0(b,c,d,e,a, 9); R0(a,b,c,d,e,10); R0(e,a,b,c,d,11); - R0(d,e,a,b,c,12); R0(c,d,e,a,b,13); R0(b,c,d,e,a,14); R0(a,b,c,d,e,15); - R1(e,a,b,c,d,16); R1(d,e,a,b,c,17); R1(c,d,e,a,b,18); R1(b,c,d,e,a,19); - R2(a,b,c,d,e,20); R2(e,a,b,c,d,21); R2(d,e,a,b,c,22); R2(c,d,e,a,b,23); - R2(b,c,d,e,a,24); R2(a,b,c,d,e,25); R2(e,a,b,c,d,26); R2(d,e,a,b,c,27); - R2(c,d,e,a,b,28); R2(b,c,d,e,a,29); R2(a,b,c,d,e,30); R2(e,a,b,c,d,31); - R2(d,e,a,b,c,32); R2(c,d,e,a,b,33); R2(b,c,d,e,a,34); R2(a,b,c,d,e,35); - R2(e,a,b,c,d,36); R2(d,e,a,b,c,37); R2(c,d,e,a,b,38); R2(b,c,d,e,a,39); - R3(a,b,c,d,e,40); R3(e,a,b,c,d,41); R3(d,e,a,b,c,42); R3(c,d,e,a,b,43); - R3(b,c,d,e,a,44); R3(a,b,c,d,e,45); R3(e,a,b,c,d,46); R3(d,e,a,b,c,47); - R3(c,d,e,a,b,48); R3(b,c,d,e,a,49); R3(a,b,c,d,e,50); R3(e,a,b,c,d,51); - R3(d,e,a,b,c,52); R3(c,d,e,a,b,53); R3(b,c,d,e,a,54); R3(a,b,c,d,e,55); - R3(e,a,b,c,d,56); R3(d,e,a,b,c,57); R3(c,d,e,a,b,58); R3(b,c,d,e,a,59); - R4(a,b,c,d,e,60); R4(e,a,b,c,d,61); R4(d,e,a,b,c,62); R4(c,d,e,a,b,63); - R4(b,c,d,e,a,64); R4(a,b,c,d,e,65); R4(e,a,b,c,d,66); R4(d,e,a,b,c,67); - R4(c,d,e,a,b,68); R4(b,c,d,e,a,69); R4(a,b,c,d,e,70); R4(e,a,b,c,d,71); - R4(d,e,a,b,c,72); R4(c,d,e,a,b,73); R4(b,c,d,e,a,74); R4(a,b,c,d,e,75); - R4(e,a,b,c,d,76); R4(d,e,a,b,c,77); R4(c,d,e,a,b,78); R4(b,c,d,e,a,79); - - /* Add the working vars back into state[] */ - state[0] += a; - state[1] += b; - state[2] += c; - state[3] += d; - state[4] += e; -} - -static inline void -sha1_update(uint32_t *state, uint64_t *count, char *buffer, - const char *buf, size_t size) -{ - size_t i, j; - - j = (size_t)((*count >> 3) & 63); - *count += (size << 3); - - if ((j + size) > 63) { - memcpy(&buffer[j], buf, (i = 64 - j)); - - sha1_transform(state, buffer); - - for (; i + 63 < size; i += 64) - sha1_transform(state, &buf[i]); - - j = 0; - } else - i = 0; - - memcpy(&buffer[j], &buf[i], size - i); -} - -@implementation OFSHA1Hash -+ sha1Hash -{ - return [[[self alloc] init] autorelease]; -} - -- init -{ - self = [super init]; - - state[0] = 0x67452301; - state[1] = 0xEFCDAB89; - state[2] = 0x98BADCFE; - state[3] = 0x10325476; - state[4] = 0xC3D2E1F0; - - return self; -} - -- (void)updateWithBuffer: (const char*)buf - ofSize: (size_t)size -{ - if (size == 0) - return; - - if (calculated) - @throw [OFHashAlreadyCalculatedException newWithClass: isa]; - - sha1_update(state, &count, buffer, buf, size); -} - -- (uint8_t*)digest -{ - size_t i; - char finalcount[8]; - - if (calculated) - return digest; - - for (i = 0; i < 8; i++) - /* Endian independent */ - finalcount[i] = (char)((count >> ((7 - (i & 7)) * 8)) & 255); - sha1_update(state, &count, buffer, "\200", 1); - - while ((count & 504) != 448) - sha1_update(state, &count, buffer, "\0", 1); - /* Should cause a sha1_transform() */ - sha1_update(state, &count, buffer, finalcount, 8); - - for (i = 0; i < OF_SHA1_DIGEST_SIZE; i++) - digest[i] = (char)((state[i >> 2] >> - ((3 - (i & 3)) * 8)) & 255); - - calculated = YES; - - return digest; -} -@end - -#undef blk0 -#undef blk -#undef R0 -#undef R1 -#undef R2 -#undef R3 -#undef R4 - -@implementation OFString (OFHashing) -- (OFString*)md5Hash -{ - OFAutoreleasePool *pool = [[OFAutoreleasePool alloc] init]; - OFMD5Hash *hash = [OFMD5Hash md5Hash]; - uint8_t *digest; - char ret_c[32]; - size_t i; - - [hash updateWithBuffer: string - ofSize: length]; - digest = [hash digest]; - - for (i = 0; i < 16; i++) { - uint8_t high, low; - - high = digest[i] >> 4; - low = digest[i] & 0x0F; - - ret_c[i * 2] = (high > 9 ? high - 10 + 'a' : high + '0'); - ret_c[i * 2 + 1] = (low > 9 ? low - 10 + 'a' : low + '0'); - } - - [pool release]; - - return [OFString stringWithCString: ret_c - length: 32]; -} - -- (OFString*)sha1Hash -{ - OFAutoreleasePool *pool = [[OFAutoreleasePool alloc] init]; - OFMD5Hash *hash = [OFSHA1Hash sha1Hash]; - uint8_t *digest; - char ret_c[40]; - size_t i; - - [hash updateWithBuffer: string - ofSize: length]; - digest = [hash digest]; - - for (i = 0; i < 20; i++) { - uint8_t high, low; - - high = digest[i] >> 4; - low = digest[i] & 0x0F; - - ret_c[i * 2] = (high > 9 ? high - 10 + 'a' : high + '0'); - ret_c[i * 2 + 1] = (low > 9 ? low - 10 + 'a' : low + '0'); - } - - [pool release]; - - return [OFString stringWithCString: ret_c - length: 40]; -} @end