MD5头文件（c++语言直接可以使用）

#include <vcl.h> #include <stdio.h> //////////////////////////////////////////////////////////////////////////////// typedef struct { DWORD state[4]; //encypted message DWORD count[2]; //bits of plaintext unsigned char buffer[64]; }MD5_CTX; //////////////////////////////////////////////////////////////////////////////// #define S11 7 #define S12 12 #define S13 17 #define S14 22 #define S21 5 #define S22 9 #define S23 14 #define S24 20 #define S31 4 #define S32 11 #define S33 16 #define S34 23 #define S41 6 #define S42 10 #define S43 15 #define S44 21 #define a esi #define b edi #define c edx #define d ebx #define tmp1 eax #define tmp2 ecx #define x(i) [x+4*i] static unsigned char PADDING[64] = { 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; #define FF(a, b, c, d, x, s, ac) \ __asm mov tmp1,b; \ __asm and tmp1,c; \ __asm mov tmp2,b; \ __asm not tmp2; \ __asm and tmp2,d; \ __asm or tmp2,tmp1; \ __asm lea a,[tmp2+a+ac]; \ __asm add a,x; \ __asm rol a,s; \ __asm add a,b; #define GG(a, b, c, d, x, s, ac) \ __asm mov tmp1,b; \ __asm and tmp1,d; \ __asm mov tmp2,d; \ __asm not tmp2; \ __asm and tmp2,c; \ __asm or tmp2,tmp1; \ __asm lea a,[tmp2+a+ac]; \ __asm add a,x; \ __asm rol a,s; \ __asm add a,b; #define HH(a,b,c, d, x, s, ac) \ __asm mov tmp2,b; \ __asm xor tmp2,c; \ __asm xor tmp2,d; \ __asm lea a,[tmp2+a+ac]; \ __asm add a,x; \ __asm rol a,s; \ __asm add a,b; #define II(a, b, c, d, x, s, ac) \ __asm mov tmp2,d; \ __asm not tmp2; \ __asm or tmp2,b; \ __asm xor tmp2,c; \ __asm lea a,[tmp2+a+ac]; \ __asm add a,x; \ __asm rol a,s; \ __asm add a,b; static void MD5Transform (DWORD state[4], unsigned char block[64]); static void MD5Init (MD5_CTX *context) { context->count[0] = context->count[1] = 0; context->state[0] = 0x67452301; context->state[1] = 0xefcdab89; context->state[2] = 0x98badcfe; context->state[3] = 0x10325476; } static void MD5Update (MD5_CTX *context, unsigned char *input, unsigned int inputLen) { unsigned int i, index, partLen; index = (unsigned int)((context->count[0] >> 3) & 0x3F); if ((context->count[0] += ((DWORD)inputLen << 3)) < ((DWORD)inputLen << 3)) context->count[1]++; context->count[1] += ((DWORD)inputLen >> 29); partLen = 64 - index; if (inputLen >= partLen) { CopyMemory(&context->buffer[index],input, partLen); MD5Transform (context->state, context->buffer); for (i = partLen; i + 63 < inputLen; i += 64){;} index = 0; } else i = 0; /* Buffer remaining input */ CopyMemory(&context->buffer[index],&input[i],inputLen-i); } static void MD5Final (MD5_CTX *context,unsigned char res[/*16*/]) { unsigned char *p=NULL; unsigned char bits[8]; unsigned int i,index, padLen; CopyMemory(bits,context->count,8); index = (unsigned int)((context->count[0] >> 3) & 0x3f); padLen = (index < 56) ? (56 - index) : (120 - index); MD5Update (context, PADDING, padLen); MD5Update (context, bits, 8); p=(unsigned char*)(&(context->state[0])); for(i=0; i<16 ;i++) res[i]=*(p+i); } static void MD5Transform (DWORD state[4], unsigned char block[64]) { DWORD x[16]; __asm { //initial mov a,0x67452301 mov b,0xefcdab89 mov c,0x98badcfe mov d,0x10325476 //copy string from block to state //考虑到用API会影响寄存器，所以自己实现这一段内存拷贝 push esi push edi xor ecx,ecx mov esi,dword ptr [block] lea edi,[x] ROLL: mov eax,dword ptr [esi+ecx] mov dword ptr [edi+ecx],eax add ecx,4 cmp ecx,64 jb ROLL pop edi pop esi } /* Round 1 */ FF(a, b, c, d, x( 0), S11, 0xd76aa478); /* 1 */ FF(d, a, b, c, x( 1), S12, 0xe8c7b756); /* 2 */ FF(c, d, a, b, x( 2), S13, 0x242070db); /* 3 */ FF(b, c, d, a, x( 3), S14, 0xc1bdceee); /* 4 */ FF(a, b, c, d, x( 4), S11, 0xf57c0faf); /* 5 */ FF(d, a, b, c, x( 5), S12, 0x4787c62a); /* 6 */ FF(c, d, a, b, x( 6), S13, 0xa8304613); /* 7 */ FF(b, c, d, a, x( 7), S14, 0xfd469501); /* 8 */ FF(a, b, c, d, x( 8), S11, 0x698098d8); /* 9 */ FF(d, a, b, c, x( 9), S12, 0x8b44f7af); /* 10 */ FF(c, d, a, b, x(10), S13, 0xffff5bb1); /* 11 */ FF(b, c, d, a, x(11), S14, 0x895cd7be); /* 12 */ FF(a, b, c, d, x(12), S11, 0x6b901122); /* 13 */ FF(d, a, b, c, x(13), S12, 0xfd987193); /* 14 */ FF(c, d, a, b, x(14), S13, 0xa679438e); /* 15 */ FF(b, c, d, a, x(15), S14, 0x49b40821); /* 16 */ /* Round 2 */ GG (a, b, c, d, x( 1), S21, 0xf61e2562); /* 17 */ GG (d, a, b, c, x( 6), S22, 0xc040b340); /* 18 */ GG (c, d, a, b, x(11), S23, 0x265e5a51); /* 19 */ GG (b, c, d, a, x( 0), S24, 0xe9b6c7aa); /* 20 */ GG (a, b, c, d, x( 5), S21, 0xd62f105d); /* 21 */ GG (d, a, b, c, x(10), S22, 0x2441453); /* 22 */ GG (c, d, a, b, x(15), S23, 0xd8a1e681); /* 23 */ GG (b, c, d, a, x( 4), S24, 0xe7d3fbc8); /* 24 */ GG (a, b, c, d, x( 9), S21, 0x21e1cde6); /* 25 */ GG (d, a, b, c, x(14), S22, 0xc33707d6); /* 26 */ GG (c, d, a, b, x( 3), S23, 0xf4d50d87); /* 27 */ GG (b, c, d, a, x( 8), S24, 0x455a14ed); /* 28 */ GG (a, b, c, d, x(13), S21, 0xa9e3e905); /* 29 */ GG (d, a, b, c, x( 2), S22, 0xfcefa3f8); /* 30 */ GG (c, d, a, b, x( 7), S23, 0x676f02d9); /* 31 */ GG (b, c, d, a, x(12), S24, 0x8d2a4c8a); /* 32 */ /* Round 3 */ HH (a, b, c, d, x( 5), S31, 0xfffa3942); /* 33 */ HH (d, a, b, c, x( 8), S32, 0x8771f681); /* 34 */ HH (c, d, a, b, x(11), S33, 0x6d9d6122); /* 35 */ HH (b, c, d, a, x(14), S34, 0xfde5380c); /* 36 */ HH (a, b, c, d, x( 1), S31, 0xa4beea44); /* 37 */ HH (d, a, b, c, x( 4), S32, 0x4bdecfa9); /* 38 */ HH (c, d, a, b, x( 7), S33, 0xf6bb4b60); /* 39 */ HH (b, c, d, a, x(10), S34, 0xbebfbc70); /* 40 */ HH (a, b, c, d, x(13), S31, 0x289b7ec6); /* 41 */ HH (d, a, b, c, x( 0), S32, 0xeaa127fa); /* 42 */ HH (c, d, a, b, x( 3), S33, 0xd4ef3085); /* 43 */ HH (b, c, d, a, x( 6), S34, 0x4881d05); /* 44 */ HH (a, b, c, d, x( 9), S31, 0xd9d4d039); /* 45 */ HH (d, a, b, c, x(12), S32, 0xe6db99e5); /* 46 */ HH (c, d, a, b, x(15), S33, 0x1fa27cf8); /* 47 */ HH (b, c, d, a, x( 2), S34, 0xc4ac5665); /* 48 */ /* Round 4 */ II (a, b, c, d, x( 0), S41, 0xf4292244); /* 49 */ II (d, a, b, c, x( 7), S42, 0x432aff97); /* 50 */ II (c, d, a, b, x(14), S43, 0xab9423a7); /* 51 */ II (b, c, d, a, x( 5), S44, 0xfc93a039); /* 52 */ II (a, b, c, d, x(12), S41, 0x655b59c3); /* 53 */ II (d, a, b, c, x( 3), S42, 0x8f0ccc92); /* 54 */ II (c, d, a, b, x(10), S43, 0xffeff47d); /* 55 */ II (b, c, d, a, x( 1), S44, 0x85845dd1); /* 56 */ II (a, b, c, d, x( 8), S41, 0x6fa87e4f); /* 57 */ II (d, a, b, c, x(15), S42, 0xfe2ce6e0); /* 58 */ II (c, d, a, b, x( 6), S43, 0xa3014314); /* 59 */ II (b, c, d, a, x(13), S44, 0x4e0811a1); /* 60 */ II (a, b, c, d, x( 4), S41, 0xf7537e82); /* 61 */ II (d, a, b, c, x(11), S42, 0xbd3af235); /* 62 */ II (c, d, a, b, x( 2), S43, 0x2ad7d2bb); /* 63 */ II (b, c, d, a, x( 9), S44, 0xeb86d391); /* 64 */ __asm { mov tmp1,DWORD PTR [state] add DWORD PTR [tmp1],a add DWORD PTR [tmp1+4],b add DWORD PTR [tmp1+8],c add DWORD PTR [tmp1+12],d } } //=======================================================