crypt.c

#include"crypt.h"
#include<stdlib.h>
#include<stdio.h>
#include<time.h>



/* the eight DES S-boxes */
#define P 0xffffffffffffffc5ull
static uint32_t SB1[64] =
{ 0x01010400, 0x00000000, 0x00010000, 0x01010404, 0x01010004, 0x00010404,
0x00000004, 0x00010000, 0x00000400, 0x01010400, 0x01010404, 0x00000400,
0x01000404, 0x01010004, 0x01000000, 0x00000004, 0x00000404, 0x01000400,
0x01000400, 0x00010400, 0x00010400, 0x01010000, 0x01010000, 0x01000404,
0x00010004, 0x01000004, 0x01000004, 0x00010004, 0x00000000, 0x00000404,
0x00010404, 0x01000000, 0x00010000, 0x01010404, 0x00000004, 0x01010000,
0x01010400, 0x01000000, 0x01000000, 0x00000400, 0x01010004, 0x00010000,
0x00010400, 0x01000004, 0x00000400, 0x00000004, 0x01000404, 0x00010404,
0x01010404, 0x00010004, 0x01010000, 0x01000404, 0x01000004, 0x00000404,
0x00010404, 0x01010400, 0x00000404, 0x01000400, 0x01000400, 0x00000000,
0x00010004, 0x00010400, 0x00000000, 0x01010004 };

static uint32_t SB2[64] =
{ 0x80108020, 0x80008000, 0x00008000, 0x00108020, 0x00100000, 0x00000020,
0x80100020, 0x80008020, 0x80000020, 0x80108020, 0x80108000, 0x80000000,
0x80008000, 0x00100000, 0x00000020, 0x80100020, 0x00108000, 0x00100020,
0x80008020, 0x00000000, 0x80000000, 0x00008000, 0x00108020, 0x80100000,
0x00100020, 0x80000020, 0x00000000, 0x00108000, 0x00008020, 0x80108000,
0x80100000, 0x00008020, 0x00000000, 0x00108020, 0x80100020, 0x00100000,
0x80008020, 0x80100000, 0x80108000, 0x00008000, 0x80100000, 0x80008000,
0x00000020, 0x80108020, 0x00108020, 0x00000020, 0x00008000, 0x80000000,
0x00008020, 0x80108000, 0x00100000, 0x80000020, 0x00100020, 0x80008020,
0x80000020, 0x00100020, 0x00108000, 0x00000000, 0x80008000, 0x00008020,
0x80000000, 0x80100020, 0x80108020, 0x00108000 };

static uint32_t SB3[64] =
{ 0x00000208, 0x08020200, 0x00000000, 0x08020008, 0x08000200, 0x00000000,
0x00020208, 0x08000200, 0x00020008, 0x08000008, 0x08000008, 0x00020000,
0x08020208, 0x00020008, 0x08020000, 0x00000208, 0x08000000, 0x00000008,
0x08020200, 0x00000200, 0x00020200, 0x08020000, 0x08020008, 0x00020208,
0x08000208, 0x00020200, 0x00020000, 0x08000208, 0x00000008, 0x08020208,
0x00000200, 0x08000000, 0x08020200, 0x08000000, 0x00020008, 0x00000208,
0x00020000, 0x08020200, 0x08000200, 0x00000000, 0x00000200, 0x00020008,
0x08020208, 0x08000200, 0x08000008, 0x00000200, 0x00000000, 0x08020008,
0x08000208, 0x00020000, 0x08000000, 0x08020208, 0x00000008, 0x00020208,
0x00020200, 0x08000008, 0x08020000, 0x08000208, 0x00000208, 0x08020000,
0x00020208, 0x00000008, 0x08020008, 0x00020200 };

static uint32_t SB4[64] =
{ 0x00802001, 0x00002081, 0x00002081, 0x00000080, 0x00802080, 0x00800081,
0x00800001, 0x00002001, 0x00000000, 0x00802000, 0x00802000, 0x00802081,
0x00000081, 0x00000000, 0x00800080, 0x00800001, 0x00000001, 0x00002000,
0x00800000, 0x00802001, 0x00000080, 0x00800000, 0x00002001, 0x00002080,
0x00800081, 0x00000001, 0x00002080, 0x00800080, 0x00002000, 0x00802080,
0x00802081, 0x00000081, 0x00800080, 0x00800001, 0x00802000, 0x00802081,
0x00000081, 0x00000000, 0x00000000, 0x00802000, 0x00002080, 0x00800080,
0x00800081, 0x00000001, 0x00802001, 0x00002081, 0x00002081, 0x00000080,
0x00802081, 0x00000081, 0x00000001, 0x00002000, 0x00800001, 0x00002001,
0x00802080, 0x00800081, 0x00002001, 0x00002080, 0x00800000, 0x00802001,
0x00000080, 0x00800000, 0x00002000, 0x00802080 };

static uint32_t SB5[64] =
{ 0x00000100, 0x02080100, 0x02080000, 0x42000100, 0x00080000, 0x00000100,
0x40000000, 0x02080000, 0x40080100, 0x00080000, 0x02000100, 0x40080100,
0x42000100, 0x42080000, 0x00080100, 0x40000000, 0x02000000, 0x40080000,
0x40080000, 0x00000000, 0x40000100, 0x42080100, 0x42080100, 0x02000100,
0x42080000, 0x40000100, 0x00000000, 0x42000000, 0x02080100, 0x02000000,
0x42000000, 0x00080100, 0x00080000, 0x42000100, 0x00000100, 0x02000000,
0x40000000, 0x02080000, 0x42000100, 0x40080100, 0x02000100, 0x40000000,
0x42080000, 0x02080100, 0x40080100, 0x00000100, 0x02000000, 0x42080000,
0x42080100, 0x00080100, 0x42000000, 0x42080100, 0x02080000, 0x00000000,
0x40080000, 0x42000000, 0x00080100, 0x02000100, 0x40000100, 0x00080000,
0x00000000, 0x40080000, 0x02080100, 0x40000100 };

static uint32_t SB6[64] =
{ 0x20000010, 0x20400000, 0x00004000, 0x20404010, 0x20400000, 0x00000010,
0x20404010, 0x00400000, 0x20004000, 0x00404010, 0x00400000, 0x20000010,
0x00400010, 0x20004000, 0x20000000, 0x00004010, 0x00000000, 0x00400010,
0x20004010, 0x00004000, 0x00404000, 0x20004010, 0x00000010, 0x20400010,
0x20400010, 0x00000000, 0x00404010, 0x20404000, 0x00004010, 0x00404000,
0x20404000, 0x20000000, 0x20004000, 0x00000010, 0x20400010, 0x00404000,
0x20404010, 0x00400000, 0x00004010, 0x20000010, 0x00400000, 0x20004000,
0x20000000, 0x00004010, 0x20000010, 0x20404010, 0x00404000, 0x20400000,
0x00404010, 0x20404000, 0x00000000, 0x20400010, 0x00000010, 0x00004000,
0x20400000, 0x00404010, 0x00004000, 0x00400010, 0x20004010, 0x00000000,
0x20404000, 0x20000000, 0x00400010, 0x20004010 };

static uint32_t SB7[64] =
{ 0x00200000, 0x04200002, 0x04000802, 0x00000000, 0x00000800, 0x04000802,
0x00200802, 0x04200800, 0x04200802, 0x00200000, 0x00000000, 0x04000002,
0x00000002, 0x04000000, 0x04200002, 0x00000802, 0x04000800, 0x00200802,
0x00200002, 0x04000800, 0x04000002, 0x04200000, 0x04200800, 0x00200002,
0x04200000, 0x00000800, 0x00000802, 0x04200802, 0x00200800, 0x00000002,
0x04000000, 0x00200800, 0x04000000, 0x00200800, 0x00200000, 0x04000802,
0x04000802, 0x04200002, 0x04200002, 0x00000002, 0x00200002, 0x04000000,
0x04000800, 0x00200000, 0x04200800, 0x00000802, 0x00200802, 0x04200800,
0x00000802, 0x04000002, 0x04200802, 0x04200000, 0x00200800, 0x00000000,
0x00000002, 0x04200802, 0x00000000, 0x00200802, 0x04200000, 0x00000800,
0x04000002, 0x04000800, 0x00000800, 0x00200002 };

static uint32_t SB8[64] =
{ 0x10001040, 0x00001000, 0x00040000, 0x10041040, 0x10000000, 0x10001040,
0x00000040, 0x10000000, 0x00040040, 0x10040000, 0x10041040, 0x00041000,
0x10041000, 0x00041040, 0x00001000, 0x00000040, 0x10040000, 0x10000040,
0x10001000, 0x00001040, 0x00041000, 0x00040040, 0x10040040, 0x10041000,
0x00001040, 0x00000000, 0x00000000, 0x10040040, 0x10000040, 0x10001000,
0x00041040, 0x00040000, 0x00041040, 0x00040000, 0x10041000, 0x00001000,
0x00000040, 0x10040040, 0x00001000, 0x00041040, 0x10001000, 0x00000040,
0x10000040, 0x10040000, 0x10040040, 0x10000000, 0x00040000, 0x10001040,
0x00000000, 0x10041040, 0x00040040, 0x10000040, 0x10040000, 0x10001000,
0x10001040, 0x00000000, 0x10041040, 0x00041000, 0x00041000, 0x00001040,
0x00001040, 0x00040040, 0x10000000, 0x10041000 };

/* PC1: left and right halves bit-swap */

static uint32_t LHs[16] =
{ 0x00000000, 0x00000001, 0x00000100, 0x00000101, 0x00010000, 0x00010001,
0x00010100, 0x00010101, 0x01000000, 0x01000001, 0x01000100, 0x01000101,
0x01010000, 0x01010001, 0x01010100, 0x01010101 };

static uint32_t RHs[16] =
{ 0x00000000, 0x01000000, 0x00010000, 0x01010000, 0x00000100, 0x01000100,
0x00010100, 0x01010100, 0x00000001, 0x01000001, 0x00010001, 0x01010001,
0x00000101, 0x01000101, 0x00010101, 0x01010101, };

/* platform-independant 32-bit integer manipulation macros */

#define GET_UINT32(n,b,i)					   \
{											   \
	(n) = ( (uint32_t) (b)[(i)	] << 24 )	   \
		| ( (uint32_t) (b)[(i) + 1] << 16 )	   \
		| ( (uint32_t) (b)[(i) + 2] <<  8 )	   \
		| ( (uint32_t) (b)[(i) + 3]	   );	  \
}

#define PUT_UINT32(n,b,i)					   \
{											   \
	(b)[(i)	] = (uint8_t) ( (n) >> 24 );	   \
	(b)[(i) + 1] = (uint8_t) ( (n) >> 16 );	   \
	(b)[(i) + 2] = (uint8_t) ( (n) >>  8 );	   \
	(b)[(i) + 3] = (uint8_t) ( (n)	   );	   \
}

/* Initial Permutation macro */

#define DES_IP(X,Y)											 \
{															   \
	T = ((X >>  4) ^ Y) & 0x0F0F0F0F; Y ^= T; X ^= (T <<  4);   \
	T = ((X >> 16) ^ Y) & 0x0000FFFF; Y ^= T; X ^= (T << 16);   \
	T = ((Y >>  2) ^ X) & 0x33333333; X ^= T; Y ^= (T <<  2);   \
	T = ((Y >>  8) ^ X) & 0x00FF00FF; X ^= T; Y ^= (T <<  8);   \
	Y = ((Y << 1) | (Y >> 31)) & 0xFFFFFFFF;					\
	T = (X ^ Y) & 0xAAAAAAAA; Y ^= T; X ^= T;				   \
	X = ((X << 1) | (X >> 31)) & 0xFFFFFFFF;					\
}

/* Final Permutation macro */

#define DES_FP(X,Y)											 \
{															   \
	X = ((X << 31) | (X >> 1)) & 0xFFFFFFFF;					\
	T = (X ^ Y) & 0xAAAAAAAA; X ^= T; Y ^= T;				   \
	Y = ((Y << 31) | (Y >> 1)) & 0xFFFFFFFF;					\
	T = ((Y >>  8) ^ X) & 0x00FF00FF; X ^= T; Y ^= (T <<  8);   \
	T = ((Y >>  2) ^ X) & 0x33333333; X ^= T; Y ^= (T <<  2);   \
	T = ((X >> 16) ^ Y) & 0x0000FFFF; Y ^= T; X ^= (T << 16);   \
	T = ((X >>  4) ^ Y) & 0x0F0F0F0F; Y ^= T; X ^= (T <<  4);   \
}

/* DES round macro */

#define DES_ROUND(X,Y)						  \
{											   \
	T = *SK++ ^ X;							  \
	Y ^= SB8[ (T	  ) & 0x3F ] ^			  \
		 SB6[ (T >>  8) & 0x3F ] ^			  \
		 SB4[ (T >> 16) & 0x3F ] ^			  \
		 SB2[ (T >> 24) & 0x3F ];			   \
												\
	T = *SK++ ^ ((X << 28) | (X >> 4));		 \
	Y ^= SB7[ (T	  ) & 0x3F ] ^			  \
		 SB5[ (T >>  8) & 0x3F ] ^			  \
		 SB3[ (T >> 16) & 0x3F ] ^			  \
		 SB1[ (T >> 24) & 0x3F ];			   \
}

/* DES key schedule */

void des_main_ks(uint32_t SK[32], const uint8_t key[8])
{
	int i;
	uint32_t X, Y, T;

	GET_UINT32(X, key, 0);
	GET_UINT32(Y, key, 4);

	/* Permuted Choice 1 */

	T = ((Y >> 4) ^ X) & 0x0F0F0F0F;
	X ^= T;
	Y ^= (T << 4);
	T = ((Y) ^ X) & 0x10101010;
	X ^= T;
	Y ^= (T);

	X = (LHs[(X) & 0xF] << 3) | (LHs[(X >> 8) & 0xF] << 2)
		| (LHs[(X >> 16) & 0xF] << 1) | (LHs[(X >> 24) & 0xF])
		| (LHs[(X >> 5) & 0xF] << 7) | (LHs[(X >> 13) & 0xF] << 6)
		| (LHs[(X >> 21) & 0xF] << 5) | (LHs[(X >> 29) & 0xF] << 4);

	Y = (RHs[(Y >> 1) & 0xF] << 3) | (RHs[(Y >> 9) & 0xF] << 2)
		| (RHs[(Y >> 17) & 0xF] << 1) | (RHs[(Y >> 25) & 0xF])
		| (RHs[(Y >> 4) & 0xF] << 7) | (RHs[(Y >> 12) & 0xF] << 6)
		| (RHs[(Y >> 20) & 0xF] << 5) | (RHs[(Y >> 28) & 0xF] << 4);

	X &= 0x0FFFFFFF;
	Y &= 0x0FFFFFFF;

	/* calculate subkeys */

	for (i = 0; i < 16; i++)
	{
		if (i < 2 || i == 8 || i == 15)
		{
			X = ((X << 1) | (X >> 27)) & 0x0FFFFFFF;
			Y = ((Y << 1) | (Y >> 27)) & 0x0FFFFFFF;
		}
		else
		{
			X = ((X << 2) | (X >> 26)) & 0x0FFFFFFF;
			Y = ((Y << 2) | (Y >> 26)) & 0x0FFFFFFF;
		}

		*SK++ = ((X << 4) & 0x24000000) | ((X << 28) & 0x10000000)
			| ((X << 14) & 0x08000000) | ((X << 18) & 0x02080000)
			| ((X << 6) & 0x01000000) | ((X << 9) & 0x00200000)
			| ((X >> 1) & 0x00100000) | ((X << 10) & 0x00040000)
			| ((X << 2) & 0x00020000) | ((X >> 10) & 0x00010000)
			| ((Y >> 13) & 0x00002000) | ((Y >> 4) & 0x00001000)
			| ((Y << 6) & 0x00000800) | ((Y >> 1) & 0x00000400)
			| ((Y >> 14) & 0x00000200) | ((Y) & 0x00000100)
			| ((Y >> 5) & 0x00000020) | ((Y >> 10) & 0x00000010)
			| ((Y >> 3) & 0x00000008) | ((Y >> 18) & 0x00000004)
			| ((Y >> 26) & 0x00000002) | ((Y >> 24) & 0x00000001);

		*SK++ = ((X << 15) & 0x20000000) | ((X << 17) & 0x10000000)
			| ((X << 10) & 0x08000000) | ((X << 22) & 0x04000000)
			| ((X >> 2) & 0x02000000) | ((X << 1) & 0x01000000)
			| ((X << 16) & 0x00200000) | ((X << 11) & 0x00100000)
			| ((X << 3) & 0x00080000) | ((X >> 6) & 0x00040000)
			| ((X << 15) & 0x00020000) | ((X >> 4) & 0x00010000)
			| ((Y >> 2) & 0x00002000) | ((Y << 8) & 0x00001000)
			| ((Y >> 14) & 0x00000808) | ((Y >> 9) & 0x00000400)
			| ((Y) & 0x00000200) | ((Y << 7) & 0x00000100)
			| ((Y >> 7) & 0x00000020) | ((Y >> 3) & 0x00000011)
			| ((Y << 2) & 0x00000004) | ((Y >> 21) & 0x00000002);
	}
}

const uint32_t k[64] =
{ 0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee, 0xf57c0faf, 0x4787c62a,
0xa8304613, 0xfd469501, 0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be,
0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821, 0xf61e2562, 0xc040b340,
0x265e5a51, 0xe9b6c7aa, 0xd62f105d, 0x02441453, 0xd8a1e681, 0xe7d3fbc8,
0x21e1cde6, 0xc33707d6, 0xf4d50d87, 0x455a14ed, 0xa9e3e905, 0xfcefa3f8,
0x676f02d9, 0x8d2a4c8a, 0xfffa3942, 0x8771f681, 0x6d9d6122, 0xfde5380c,
0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70, 0x289b7ec6, 0xeaa127fa,
0xd4ef3085, 0x04881d05, 0xd9d4d039, 0xe6db99e5, 0x1fa27cf8, 0xc4ac5665,
0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039, 0x655b59c3, 0x8f0ccc92,
0xffeff47d, 0x85845dd1, 0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1,
0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391 };

// r specifies the per-round shift amounts
const uint32_t r[] =
{ 7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22, 5, 9, 14, 20, 5,
9, 14, 20, 5, 9, 14, 20, 5, 9, 14, 20, 4, 11, 16, 23, 4, 11, 16, 23, 4,
11, 16, 23, 4, 11, 16, 23, 6, 10, 15, 21, 6, 10, 15, 21, 6, 10, 15, 21,
6, 10, 15, 21 };

// leftrotate function definition
#define LEFTROTATE(x, c) (((x) << (c)) | ((x) >> (32 - (c))))

void Hash(const char * str, int sz, uint8_t key[8])
{
	uint32_t djb_hash = 5381L;
	uint32_t js_hash = 1315423911L;

	int i;
	for (i = 0; i < sz; i++)
	{
		uint8_t c = (uint8_t)str[i];
		djb_hash += (djb_hash << 5) + c;
		js_hash ^= ((js_hash << 5) + c + (js_hash >> 2));
	}

	key[0] = djb_hash & 0xff;
	key[1] = (djb_hash >> 8) & 0xff;
	key[2] = (djb_hash >> 16) & 0xff;
	key[3] = (djb_hash >> 24) & 0xff;

	key[4] = js_hash & 0xff;
	key[5] = (js_hash >> 8) & 0xff;
	key[6] = (js_hash >> 16) & 0xff;
	key[7] = (js_hash >> 24) & 0xff;
}

int Randomkey(char tmp[8])
{
	static int init = 0;
	if (init == 0)
	{
		init = 1;
		srand((uint32_t)time(NULL));
	}
	int i;
	char x = 0;
	for (i = 0; i < 8; i++)
	{
		tmp[i] = rand() & 0xff;
		x ^= tmp[i];
	}
	if (x == 0)
	{
		tmp[0] |= 1;	// avoid 0
	}
	return 0;
}

void des_crypt(const uint32_t SK[32], const uint8_t input[8],
	uint8_t output[8])
{
	uint32_t X, Y, T;

	GET_UINT32(X, input, 0);
	GET_UINT32(Y, input, 4);

	DES_IP(X, Y);

	DES_ROUND(Y, X);
	DES_ROUND(X, Y);
	DES_ROUND(Y, X);
	DES_ROUND(X, Y);
	DES_ROUND(Y, X);
	DES_ROUND(X, Y);
	DES_ROUND(Y, X);
	DES_ROUND(X, Y);
	DES_ROUND(Y, X);
	DES_ROUND(X, Y);
	DES_ROUND(Y, X);
	DES_ROUND(X, Y);
	DES_ROUND(Y, X);
	DES_ROUND(X, Y);
	DES_ROUND(Y, X);
	DES_ROUND(X, Y);

	DES_FP(Y, X);

	PUT_UINT32(Y, output, 0);
	PUT_UINT32(X, output, 4);
}

void hmac(uint32_t x[2], uint32_t y[2], uint32_t result[2])
{
	uint32_t w[16];
	uint32_t a, b, c, d, f, g, temp;
	int i;

	a = 0x67452301u;
	b = 0xefcdab89u;
	c = 0x98badcfeu;
	d = 0x10325476u;

	for (i = 0; i < 16; i += 4)
	{
		w[i] = x[1];
		w[i + 1] = x[0];
		w[i + 2] = y[1];
		w[i + 3] = y[0];
	}

	for (i = 0; i < 64; i++)
	{
		if (i < 16)
		{
			f = (b & c) | ((~b) & d);
			g = i;
		}
		else if (i < 32)
		{
			f = (d & b) | ((~d) & c);
			g = (5 * i + 1) % 16;
		}
		else if (i < 48)
		{
			f = b ^ c ^ d;
			g = (3 * i + 5) % 16;
		}
		else
		{
			f = c ^ (b | (~d));
			g = (7 * i) % 16;
		}

		temp = d;
		d = c;
		c = b;
		b = b + LEFTROTATE((a + f + k[i] + w[g]), r[i]);
		a = temp;

	}
	result[0] = c ^ d;
	result[1] = a ^ b;
}
uint64_t mul_mod_p(uint64_t a, uint64_t b)
{
	uint64_t m = 0;
	while (b)
	{
		if (b & 1)
		{
			uint64_t t = P - a;
			if (m >= t)
			{
				m -= t;
			}
			else
			{
				m += a;
			}
		}
		if (a >= P - a)
		{
			a = a * 2 - P;
		}
		else
		{
			a = a * 2;
		}
		b >>= 1;
	}
	return m;
}
uint64_t pow_mod_p(uint64_t a, uint64_t b)
{
	if (b == 1)
	{
		return a;
	}
	uint64_t t = pow_mod_p(a, b >> 1);
	t = mul_mod_p(t, t);
	if (b % 2)
	{
		t = mul_mod_p(t, a);
	}
	return t;
}
uint64_t powmodp(uint64_t a, uint64_t b)
{
	if (a > P)
		a %= P;
	return pow_mod_p(a, b);
}

void digest_md5(uint32_t w[16], uint32_t result[4]) {
	uint32_t a, b, c, d, f, g, temp;
	int i;

	a = 0x67452301u;
	b = 0xefcdab89u;
	c = 0x98badcfeu;
	d = 0x10325476u;

	for (i = 0; i<64; i++) {
		if (i < 16) {
			f = (b & c) | ((~b) & d);
			g = i;
		}
		else if (i < 32) {
			f = (d & b) | ((~d) & c);
			g = (5 * i + 1) % 16;
		}
		else if (i < 48) {
			f = b ^ c ^ d;
			g = (3 * i + 5) % 16;
		}
		else {
			f = c ^ (b | (~d));
			g = (7 * i) % 16;
		}

		temp = d;
		d = c;
		c = b;
		b = b + LEFTROTATE((a + f + k[i] + w[g]), r[i]);
		a = temp;
	}

	result[0] = a;
	result[1] = b;
	result[2] = c;
	result[3] = d;
}

void hmac_md5(uint32_t x[2], uint32_t y[2], uint32_t result[2]) {
	uint32_t w[16];
	uint32_t r[4];
	int i;
	for (i = 0; i<12; i += 4) {
		w[i] = x[0];
		w[i + 1] = x[1];
		w[i + 2] = y[0];
		w[i + 3] = y[1];
	}

	w[12] = 0x80;
	w[13] = 0;
	w[14] = 384;
	w[15] = 0;

	digest_md5(w, r);

	result[0] = (r[0] + 0x67452301u) ^ (r[2] + 0x98badcfeu);
	result[1] = (r[1] + 0xefcdab89u) ^ (r[3] + 0x10325476u);
}