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cuda_md5_cpu.cpp
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//
// CPU implementation of MD5 (virtually the same C code as the GPU version,
// but kept in a separate file so that G++ can do inline-optimize it as best
// as it can.
//
#include <string.h>
#include <stdio.h>
#include <iostream>
#include "cuda_runtime.h"
#include "cuda_md5.h"
#define MD5_CPU md5_cpu_v2
//
// MD5 magic numbers. These will be loaded into on-device "constant" memory
//
static const uint k[64] =
{
0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee,
0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501,
0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be,
0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821,
0xf61e2562, 0xc040b340, 0x265e5a51, 0xe9b6c7aa,
0xd62f105d, 0x2441453, 0xd8a1e681, 0xe7d3fbc8,
0x21e1cde6, 0xc33707d6, 0xf4d50d87, 0x455a14ed,
0xa9e3e905, 0xfcefa3f8, 0x676f02d9, 0x8d2a4c8a,
0xfffa3942, 0x8771f681, 0x6d9d6122, 0xfde5380c,
0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70,
0x289b7ec6, 0xeaa127fa, 0xd4ef3085, 0x4881d05,
0xd9d4d039, 0xe6db99e5, 0x1fa27cf8, 0xc4ac5665,
0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039,
0x655b59c3, 0x8f0ccc92, 0xffeff47d, 0x85845dd1,
0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1,
0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391,
};
static const uint rconst[16] =
{
7, 12, 17, 22, 5, 9, 14, 20, 4, 11, 16, 23, 6, 10, 15, 21
};
//
// MD5 routines (straight from Wikipedia's MD5 pseudocode description)
//
inline uint leftrotate (uint x, uint c)
{
return (x << c) | (x >> (32-c));
}
inline uint r(const uint i)
{
return rconst[(i / 16) * 4 + i % 4];
}
inline void step(uint i, uint &f, uint &g, uint &a, uint &b, uint &c, uint &d, uint *w)
{
uint temp = d;
d = c;
c = b;
b = b + leftrotate((a + f + k[i] + w[g]), r(i));
a = temp;
}
void md5_cpu(uint w[16], uint &a, uint &b, uint &c, uint &d)
{
const uint a0 = 0x67452301;
const uint b0 = 0xEFCDAB89;
const uint c0 = 0x98BADCFE;
const uint d0 = 0x10325476;
//Initialize hash value for this chunk:
a = a0;
b = b0;
c = c0;
d = d0;
uint f, g, i = 0;
for(; i != 16; i++)
{
f = (b & c) | ((~b) & d);
g = i;
step(i, f, g, a, b, c, d, w);
}
for(; i != 32; i++)
{
f = (d & b) | ((~d) & c);
g = (5*i + 1) % 16;
step(i, f, g, a, b, c, d, w);
}
for(; i != 48; i++)
{
f = b ^ c ^ d;
g = (3*i + 5) % 16;
step(i, f, g, a, b, c, d, w);
}
for(; i != 64; i++)
{
f = c ^ (b | (~d));
g = (7*i) % 16;
step(i, f, g, a, b, c, d, w);
}
a += a0;
b += b0;
c += c0;
d += d0;
}
//////////////////////////////////////////////////////////////////////////////
///////////// Ron Rivest's MD5 C Implementation //////////////////
//////////////////////////////////////////////////////////////////////////////
/* F, G and H are basic MD5 functions: selection, majority, parity */
#define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
#define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
#define H(x, y, z) ((x) ^ (y) ^ (z))
#define I(x, y, z) ((y) ^ ((x) | (~z)))
/* ROTATE_LEFT rotates x left n bits */
#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4 */
/* Rotation is separate from addition to prevent recomputation */
#define FF(a, b, c, d, x, s, ac) \
{(a) += F ((b), (c), (d)) + (x) + (uint)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
#define GG(a, b, c, d, x, s, ac) \
{(a) += G ((b), (c), (d)) + (x) + (uint)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
#define HH(a, b, c, d, x, s, ac) \
{(a) += H ((b), (c), (d)) + (x) + (uint)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
#define II(a, b, c, d, x, s, ac) \
{(a) += I ((b), (c), (d)) + (x) + (uint)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
#define getw(in, i) ((in)[(i)])
/* Basic MD5 step. Transform buf based on in.
*/
void md5_cpu_v2(const uint *in, uint &a, uint &b, uint &c, uint &d)
{
const uint a0 = 0x67452301;
const uint b0 = 0xEFCDAB89;
const uint c0 = 0x98BADCFE;
const uint d0 = 0x10325476;
//Initialize hash value for this chunk:
a = a0;
b = b0;
c = c0;
d = d0;
/* Round 1 */
#define S11 7
#define S12 12
#define S13 17
#define S14 22
FF ( a, b, c, d, getw(in, 0), S11, 3614090360U); /* 1 */
FF ( d, a, b, c, getw(in, 1), S12, 3905402710U); /* 2 */
FF ( c, d, a, b, getw(in, 2), S13, 606105819U); /* 3 */
FF ( b, c, d, a, getw(in, 3), S14, 3250441966U); /* 4 */
FF ( a, b, c, d, getw(in, 4), S11, 4118548399U); /* 5 */
FF ( d, a, b, c, getw(in, 5), S12, 1200080426U); /* 6 */
FF ( c, d, a, b, getw(in, 6), S13, 2821735955U); /* 7 */
FF ( b, c, d, a, getw(in, 7), S14, 4249261313U); /* 8 */
FF ( a, b, c, d, getw(in, 8), S11, 1770035416U); /* 9 */
FF ( d, a, b, c, getw(in, 9), S12, 2336552879U); /* 10 */
FF ( c, d, a, b, getw(in, 10), S13, 4294925233U); /* 11 */
FF ( b, c, d, a, getw(in, 11), S14, 2304563134U); /* 12 */
FF ( a, b, c, d, getw(in, 12), S11, 1804603682U); /* 13 */
FF ( d, a, b, c, getw(in, 13), S12, 4254626195U); /* 14 */
FF ( c, d, a, b, getw(in, 14), S13, 2792965006U); /* 15 */
FF ( b, c, d, a, getw(in, 15), S14, 1236535329U); /* 16 */
/* Round 2 */
#define S21 5
#define S22 9
#define S23 14
#define S24 20
GG ( a, b, c, d, getw(in, 1), S21, 4129170786U); /* 17 */
GG ( d, a, b, c, getw(in, 6), S22, 3225465664U); /* 18 */
GG ( c, d, a, b, getw(in, 11), S23, 643717713U); /* 19 */
GG ( b, c, d, a, getw(in, 0), S24, 3921069994U); /* 20 */
GG ( a, b, c, d, getw(in, 5), S21, 3593408605U); /* 21 */
GG ( d, a, b, c, getw(in, 10), S22, 38016083U); /* 22 */
GG ( c, d, a, b, getw(in, 15), S23, 3634488961U); /* 23 */
GG ( b, c, d, a, getw(in, 4), S24, 3889429448U); /* 24 */
GG ( a, b, c, d, getw(in, 9), S21, 568446438U); /* 25 */
GG ( d, a, b, c, getw(in, 14), S22, 3275163606U); /* 26 */
GG ( c, d, a, b, getw(in, 3), S23, 4107603335U); /* 27 */
GG ( b, c, d, a, getw(in, 8), S24, 1163531501U); /* 28 */
GG ( a, b, c, d, getw(in, 13), S21, 2850285829U); /* 29 */
GG ( d, a, b, c, getw(in, 2), S22, 4243563512U); /* 30 */
GG ( c, d, a, b, getw(in, 7), S23, 1735328473U); /* 31 */
GG ( b, c, d, a, getw(in, 12), S24, 2368359562U); /* 32 */
/* Round 3 */
#define S31 4
#define S32 11
#define S33 16
#define S34 23
HH ( a, b, c, d, getw(in, 5), S31, 4294588738U); /* 33 */
HH ( d, a, b, c, getw(in, 8), S32, 2272392833U); /* 34 */
HH ( c, d, a, b, getw(in, 11), S33, 1839030562U); /* 35 */
HH ( b, c, d, a, getw(in, 14), S34, 4259657740U); /* 36 */
HH ( a, b, c, d, getw(in, 1), S31, 2763975236U); /* 37 */
HH ( d, a, b, c, getw(in, 4), S32, 1272893353U); /* 38 */
HH ( c, d, a, b, getw(in, 7), S33, 4139469664U); /* 39 */
HH ( b, c, d, a, getw(in, 10), S34, 3200236656U); /* 40 */
HH ( a, b, c, d, getw(in, 13), S31, 681279174U); /* 41 */
HH ( d, a, b, c, getw(in, 0), S32, 3936430074U); /* 42 */
HH ( c, d, a, b, getw(in, 3), S33, 3572445317U); /* 43 */
HH ( b, c, d, a, getw(in, 6), S34, 76029189U); /* 44 */
HH ( a, b, c, d, getw(in, 9), S31, 3654602809U); /* 45 */
HH ( d, a, b, c, getw(in, 12), S32, 3873151461U); /* 46 */
HH ( c, d, a, b, getw(in, 15), S33, 530742520U); /* 47 */
HH ( b, c, d, a, getw(in, 2), S34, 3299628645U); /* 48 */
/* Round 4 */
#define S41 6
#define S42 10
#define S43 15
#define S44 21
II ( a, b, c, d, getw(in, 0), S41, 4096336452U); /* 49 */
II ( d, a, b, c, getw(in, 7), S42, 1126891415U); /* 50 */
II ( c, d, a, b, getw(in, 14), S43, 2878612391U); /* 51 */
II ( b, c, d, a, getw(in, 5), S44, 4237533241U); /* 52 */
II ( a, b, c, d, getw(in, 12), S41, 1700485571U); /* 53 */
II ( d, a, b, c, getw(in, 3), S42, 2399980690U); /* 54 */
II ( c, d, a, b, getw(in, 10), S43, 4293915773U); /* 55 */
II ( b, c, d, a, getw(in, 1), S44, 2240044497U); /* 56 */
II ( a, b, c, d, getw(in, 8), S41, 1873313359U); /* 57 */
II ( d, a, b, c, getw(in, 15), S42, 4264355552U); /* 58 */
II ( c, d, a, b, getw(in, 6), S43, 2734768916U); /* 59 */
II ( b, c, d, a, getw(in, 13), S44, 1309151649U); /* 60 */
II ( a, b, c, d, getw(in, 4), S41, 4149444226U); /* 61 */
II ( d, a, b, c, getw(in, 11), S42, 3174756917U); /* 62 */
II ( c, d, a, b, getw(in, 2), S43, 718787259U); /* 63 */
II ( b, c, d, a, getw(in, 9), S44, 3951481745U); /* 64 */
a += a0;
b += b0;
c += c0;
d += d0;
}
double cpu_execute_kernel (uint *cpuWords, uint *cpuHashes, uint hashSize)
{
cudaEvent_t start, stop;
cudaEventCreate (&start), cudaEventCreate (&stop);
cudaEventRecord (start, 0);
for (unsigned long long i = 0; i < (unsigned long long)hashSize; i++)
{
MD5_CPU(&cpuWords[16 * i], cpuHashes[4 * i], cpuHashes[4 * i + 1], cpuHashes[4 * i + 2], cpuHashes[4 * i + 3]);
}
/*#define CHUNK_NUM 100
uint chunkSize = (hashSize + CHUNK_NUM - 1) / CHUNK_NUM;
for (uint k = 0; k < CHUNK_NUM; k++)
{
for(uint i = 0; i < chunkSize; i++)
{
MD5_CPU(&cpuWords[16 * i], cpuHashes[4 * i], cpuHashes[4 * i + 1], cpuHashes[4 * i + 2], cpuHashes[4 * i + 3]);
}
cpuWords += 16 * chunkSize;
cpuHashes += 4 * chunkSize;
} */
cudaEventRecord (stop, 0);
cudaEventSynchronize (stop);
float cpuTime;
cudaEventElapsedTime (&cpuTime, start, stop);
cudaEventDestroy (start), cudaEventDestroy (stop);
return cpuTime;
}
//////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////