md5

scbc.tools/MD5/MD5.cpp

@@ -0,0 +1,294 @@
+#include "stdafx.h"
+#include "Md5.h"
+#include <strsafe.h>
+
+
+// MD5Transform函数使用的常量;
+#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  
+
+// 基础的MD5函数（四个非线性函数（每轮一个））
+#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)))
+
+// 将x左移n个bit位;
+#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
+
+// FF, GG, HH, 和 II 是用来转换 Rounds1,2,3,4的 ;
+// Rotation is separate from addition to prevent recomputation;
+#define FF(a, b, c, d, x, s, ac) { \
+	(a) += F ((b), (c), (d)) + (x) + (UINT32)(ac); \
+	(a) = ROTATE_LEFT ((a), (s)); \
+	(a) += (b); \
+}
+#define GG(a, b, c, d, x, s, ac) { \
+	(a) += G ((b), (c), (d)) + (x) + (UINT32)(ac); \
+	(a) = ROTATE_LEFT ((a), (s)); \
+	(a) += (b); \
+}
+#define HH(a, b, c, d, x, s, ac) { \
+	(a) += H ((b), (c), (d)) + (x) + (UINT32)(ac); \
+	(a) = ROTATE_LEFT ((a), (s)); \
+	(a) += (b); \
+}
+#define II(a, b, c, d, x, s, ac) { \
+	(a) += I ((b), (c), (d)) + (x) + (UINT32)(ac); \
+	(a) = ROTATE_LEFT ((a), (s)); \
+	(a) += (b); \
+}
+
+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
+};
+
+CMD5::CMD5(void)
+{
+	m_nInputLen = 0;
+	m_pInputText = NULL;
+	m_bValidDigest = FALSE;
+	memset(m_digestStr,0,33);
+}
+
+CMD5::CMD5(IN CONST BYTE* szInput,IN CONST size_t& nInputLen)
+{
+	m_pInputText =  const_cast<BYTE*>(szInput); 
+	m_nInputLen = nInputLen;
+	memset(m_digestStr, 0, 33);
+	m_bValidDigest = CalcDigest();
+}
+
+CMD5::~CMD5(void)
+{
+
+}
+
+void CMD5::Decode(IN UINT32 *output, IN UINT8 *input, IN CONST size_t& len)
+{
+	UINT32 i, j;
+	for (i = 0, j = 0; j < len; i++, j += 4)
+		output[i] = (input[j]) | ((input[j+1]) << 8) | ((input[j+2]) << 16) | ((input[j+3]) << 24);
+}
+
+void CMD5::Encode(IN UINT8 *output, IN UINT32 *input, IN CONST size_t& len)
+{
+	UINT32 i, j;
+	for (i = 0, j = 0; j < len; i++, j += 4) 
+	{
+		output[j] = input[i] & 0xFF;
+		output[j+1] = (input[i] >> 8) & 0xFF;
+		output[j+2] = (input[i] >> 16) & 0xFF;
+		output[j+3] = (input[i] >> 24) & 0xFF;
+	}
+}
+
+void CMD5::MD5Init(IN MD5_CTX* md5ctx)
+{
+	md5ctx->count[0] = md5ctx->count[1] = 0;
+	// 用魔数常量来初始化;
+	md5ctx->state[0] = 0x67452301;
+	md5ctx->state[1] = 0xefcdab89;
+	md5ctx->state[2] = 0x98badcfe;
+	md5ctx->state[3] = 0x10325476;
+}
+
+void CMD5::MD5Update(IN MD5_CTX* md5ctx, IN UINT8* Input, IN CONST size_t& InputLen)
+{
+	UINT32 i, nIndex, nPartLen;
+
+	// 计算出模64（0x3F）后的值;
+	nIndex = (md5ctx->count[0] >> 3) & 0x3F;
+
+	// 更新bit位数;
+	if ( (md5ctx->count[0] += (InputLen << 3))< (InputLen << 3) )
+		md5ctx->count[1]++;
+	md5ctx->count[1] += (InputLen >> 29);
+
+	// 设置缓冲区的字节数;
+	nPartLen = 64 - nIndex;
+
+	// 尽可能多的转换;
+	if (InputLen >= nPartLen) 
+	{
+		memcpy(&md5ctx->buffer[nIndex], Input, nPartLen);
+		MD5Transform(md5ctx->state, md5ctx->buffer);
+
+		for (i = nPartLen; i + 63 < InputLen; i += 64)
+			MD5Transform(md5ctx->state, &Input[i]);
+
+		nIndex = 0;
+	}
+	else
+		i = 0;
+
+	// 复制剩余的缓冲内容;
+	memcpy(&md5ctx->buffer[nIndex], &Input[i], InputLen-i);
+}
+
+void CMD5::MD5Transform(IN UINT32 state[4], IN UINT8 block[64] )
+{
+	UINT32 a = state[0], b = state[1], c = state[2], d = state[3], x[16];
+
+	Decode(x, block, 64);
+
+	// 第一轮分组运算;
+	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 */
+
+	// 第二轮分组运算;
+	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 */
+
+	// 第三轮分组运算;
+	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 */
+
+	// 第四轮分组运算;
+	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 */
+
+	state[0] += a;
+	state[1] += b;
+	state[2] += c;
+	state[3] += d;
+
+	memset(x, 0, sizeof(x));
+}
+
+void CMD5::MD5Final(IN UINT8 digest[16], IN MD5_CTX* md5ctx)
+{
+	UINT8 bits[8];
+	UINT32 index, padLen;
+
+	// 保存2进制位数;
+	Encode(bits, md5ctx->count, 8);
+
+	/* Pad out to 56 mod 64.*/
+	index = (unsigned int)((md5ctx->count[0] >> 3) & 0x3f);
+	padLen = (index < 56) ? (56 - index) : (120 - index);
+	MD5Update(md5ctx, PADDING, padLen);
+
+	/* Append length (before padding) */
+	MD5Update(md5ctx, bits, 8);
+
+	/* Store state in digest */
+	Encode(digest, md5ctx->state, 16);
+
+	memset(md5ctx, 0, sizeof(*md5ctx));
+}
+
+void CMD5::SetBYTEText(IN CONST BYTE* szInput, IN CONST size_t& nInputLen)
+{
+	m_pInputText =  const_cast<BYTE*>(szInput); 
+	m_nInputLen = nInputLen;
+	m_bValidDigest = CalcDigest();
+}
+
+BOOL CMD5::CalcDigest()
+{
+	MD5_CTX md5ctx;
+	// 初始化md5;
+	MD5Init(&md5ctx); 
+	MD5Update(&md5ctx, m_pInputText, m_nInputLen);
+	MD5Final(m_digest,&md5ctx);
+
+	// 转化为32位的16进制字符;
+	int p = 0;
+	for (int i = 0; i < 16; i++)
+	{
+#ifdef UNICODE
+		StringCchPrintfW(&m_digestStr[p], 3, L"%02x", m_digest[i]);
+#else
+		StringCchPrintfA(&m_digestStr[p], 3, "%02x", m_digest[i]);
+#endif
+		p += 2;
+	}
+
+	return TRUE;
+}
+
+CONST TCHAR* CMD5::GetMD5Digest()
+{
+	if( m_bValidDigest )
+		return m_digestStr;
+
+	return NULL;
+}

scbc.tools/MD5/MD5.h

@@ -0,0 +1,55 @@
+#ifndef __MD5__
+#define __MD5__
+
+#pragma once
+//////////////////////////////////////////////////////////////////////////
+// MD5的Context结构体;
+typedef struct 
+{
+	// 状态 (ABCD);
+	UINT32 state[4];     
+	// 2进制位个数, modulo 2^64 (lsb first);
+	UINT32 count[2];  
+	// 输入的缓冲区;
+	UINT8  buffer[64];                        
+} MD5_CTX;
+
+class __declspec(dllexport) CMD5
+{
+public:
+	CMD5(void);
+	CMD5(IN CONST BYTE* szInput,IN CONST size_t& nInputLen);
+	~CMD5(void);
+
+private:
+	// md5核心算法;
+	void MD5Init(IN MD5_CTX* md5ctx);
+	void MD5Update(IN MD5_CTX* md5ctx, IN UINT8* Input, IN CONST size_t& InputLen);
+	void MD5Transform(IN UINT32 state[4], IN UINT8 block[64] );
+	void MD5Final(IN UINT8 digest[16], IN MD5_CTX* md5ctx);
+
+	void Decode(IN UINT32 *output, IN UINT8 *input, IN CONST size_t& len);
+	void Encode(IN UINT8 *output, IN UINT32 *input, IN CONST size_t& len);
+
+private:
+	// md5封装;
+	// 计算md5是否成功;
+	BOOL	m_bValidDigest;
+	// md5计算后的结果值;
+	UINT8	m_digest[16];
+	// 将md5数值转化为16进制字符串;
+	TCHAR	m_digestStr[33];
+	// 要计算的字符串;
+	BYTE*	m_pInputText;
+	// 要计算的字符串长度;
+	size_t  m_nInputLen;
+	// 计算出md5转化结果;
+	BOOL CalcDigest();
+
+	// 对外接口;
+public:
+	void SetBYTEText(IN CONST BYTE* szInput,IN CONST size_t& nInputLen);
+	CONST TCHAR* GetMD5Digest();
+};
+
+#endif