c++使用MD5加密支持中文

最新推荐文章于 2025-05-17 14:32:52 发布

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最新推荐文章于 2025-05-17 14:32:52 发布

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本文链接：https://blog.youkuaiyun.com/qq_15052871/article/details/78976985

本文档提供了一个C++实现的MD5加密库，包括MD5Handler类的详细定义和实现，支持中文字符串的加密。该库包含了初始化、更新、最终化等MD5加密过程的函数，以及不同长度输出的加密方法。

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#ifndef MD5Handler_H

#define MD5Handler_H
#include <string>

typedef struct
{
unsigned int count[2];
unsigned int state[4];
unsigned char buffer[64];
}MD5Handler_CTX;

#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))
#define ROTATE_LEFT(x,n) ((x << n) | (x >> (32-n)))

#define TYPE_16 1
#define TYPE_32 2

#define FF(a,b,c,d,x,s,ac) { \
a += F(b, c, d) + x + ac; \
a = ROTATE_LEFT(a, s); \
a += b; \
}
#define GG(a,b,c,d,x,s,ac) { \
a += G(b, c, d) + x + ac; \
a = ROTATE_LEFT(a, s); \
a += b; \
}
#define HH(a,b,c,d,x,s,ac) { \
a += H(b, c, d) + x + ac; \
a = ROTATE_LEFT(a, s); \
a += b; \
}
#define II(a,b,c,d,x,s,ac) { \
a += I(b, c, d) + x + ac; \
a = ROTATE_LEFT(a, s); \
a += b; \
}

class MD5Handler {
public:
MD5Handler() {
ctx = new MD5Handler_CTX();
};
~MD5Handler() {
delete ctx;
};
void MD5HandlerInit(MD5Handler_CTX *context);
void MD5HandlerUpdate(MD5Handler_CTX *context, unsigned char *input, unsigned int inputlen);
void MD5HandlerFinal(MD5Handler_CTX *context, unsigned char digest[16]);
void MD5HandlerTransform(unsigned int state[4], unsigned char block[64]);
void MD5HandlerEncode(unsigned char *output, unsigned int *input, unsigned int len);
void MD5HandlerDecode(unsigned int *output, unsigned char *input, unsigned int len);

std::string MD5HandlerEncrypt(std::string input);
std::string MD5HandlerEncrypt(std::string input, int type);
std::string MD5(std::string strmab);

MD5Handler_CTX *ctx;
};

#endif

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#include <string.h>
#include "MD5