HMAC-MD5
//md5.h程序
void md5_digest( void const *strContent, unsigned int iLength, unsigned char
output[16] );
//md5.c程序
#include
#include
#include "md5.h"
//! 定义MD5状态数据结构类型
typedef struct{
unsigned long int state[4]; // 初始链接变量;保存16字节摘要 unsigned long int count[2]; // 明文位数
unsigned char PADDING[64]; // 填充位，最大64*8位 unsigned char buffer[64]; // 输入缓冲
}MD5_State;
//! MD5转换常量
#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
//! F, G, H and I 基本MD5函数
#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循环左移n位
#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
//! 4轮运算中FF(第1轮), GG(第2轮), HH(第3轮), and II(第4轮)转换 #define FF(a, b, c, d, x, s, ac) { \ (a) += F ((b), (c), (d)) + (x) + (unsigned long int)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \ (a) += (b); \
}
#define GG(a, b, c, d, x, s, ac) { \ (a) += G ((b), (c), (d)) + (x) + (unsigned long int)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \ (a) += (b); \
}
#define HH(a, b, c, d, x, s, ac) { \ (a) += H ((b), (c), (d)) + (x) + (unsigned long int)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \ (a) += (b); \
}
#define II(a, b, c, d, x, s, ac) { \ (a) += I ((b), (c), (d)) + (x) + (unsigned long int)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \ (a) += (b); \
}
// 名称:MD5_memcpy
// 功能:输入输出字节拷贝
// 参数:output: 指向unsigned char类型输出缓冲区
// input: 指向unsigned char类型输入缓冲区
// len: 输入数据长度(字节)
// 返回:无
void MD5_memcpy( unsigned char *output, unsigned char *input, unsigned int len )
{
unsigned int i;
for( i = 0; i < len; i++ )
output[i] = input[i];
}
// 名称:MD5_memset
// 功能:对MD5运算缓冲区中填充数据
// 参数:output: 指向unsigned char类型缓冲区
// value: 数据
// len: 填充大小
// 返回:无
void MD5_memset( unsigned char *output, int value, unsigned int len )
{
unsigned int i;
for( i = 0; i < len; i++ )
((char *)output)[i] = (char)value;
}
// 名称:Encode
// 功能:数据类型轮换(unsigned long char -> unsigned char) // 参数:output: 指向unsigned char类型输出缓冲区
// input: 指向unsigned long int类型输入缓冲区
// len: 输入数据长度(字节)
// 返回:无
void Encode( unsigned char *output, unsigned long int *input, unsigned int len )
{
unsigned int i, j;
for(i = 0, j = 0; j < len; i++, j += 4)
{
output[j] = (unsigned char)(input[i] & 0xff); output[j+1] = (unsigned char)((input[i] >> 8) & 0xff); output[j+2] = (unsigned char)((input[i] >> 16) & 0xff); output[j+3] = (unsigned char)((input[i] >> 24) & 0xff); }
}
// 名称:Decode
// 功能:数据类型轮换(unsigned char -> unsigned long int) // 参数:output: 指向unsigned long int类型输出缓冲区
// input: 指向unsigned char类型输入缓冲区
// len: 输入数据长度(字节)
// 返回:无
void Decode( unsigned long int *output, unsigned char *input, unsigned int len )
{
unsigned int i, j;
for( i=0, j=0; jcount[0] = s->count[1] = 0;
//! 初始链接变量
s->state[0] = 0x67452301;
s->state[1] = 0xefcdab89;
s->state[2] = 0x98badcfe;
s->state[3] = 0x10325476;
//! 初始填充位(目标形式: 0x80000000......，共计512位)
MD5_memset( s->PADDING, 0, sizeof(s->PADDING) );
*(s->PADDING)=0x80;
// s->PADDING = {
// 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 }; }
// 名称:MD5Transform
// 功能:MD5 4轮运算
// 参数:state: 链接变量;block: 子明文分组
// 返回:无
// 备注:4轮共计64步运算
void MD5_Transform( unsigned long int state[4], unsigned char block[64] ) {
unsigned long int a = state[0], b = state[1], c = state[2], d = state[3], x[16];
Decode( x, block, 64 );
//! 第1轮
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2轮
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3轮
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4轮
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;
MD5_memset( (unsigned char*)x, 0, sizeof (x) ); }
// 名称:MD5_Update
// 功能:明文填充，明文分组，16个子明文分组
// 参数:指向SHA状态变量
// 返回:无
void MD5_Update( MD5_State *s, unsigned char *input, unsigned int inputLen )
{
unsigned int i, index, partLen;
//! 明文填充
//! 字节数 mod 64
index = (unsigned int)((s->count[0] >> 3) & 0x3F);
//! 更新位数
if((s->count[0] += ((unsigned long int)inputLen << 3)) < ((unsigned long int)inputLen << 3))
s->count[1]++;
s->count[1] += ((unsigned long int)inputLen >> 29);
partLen = 64 - index;
//! MD5 4轮运算
if (inputLen >= partLen)
{
MD5_memcpy( (unsigned char*)&s->buffer[index], (unsigned char*)input, partLen );
MD5_Transform( s->state, s->buffer );
for( i = partLen; i + 63 < inputLen; i += 64 ) MD5_Transform( s->state, &input[i] );
index = 0;
}
else
i = 0;
MD5_memcpy ((unsigned char*)&s->buffer[index], (unsigned char*)&input[i],
inputLen-i);
}
// 名称:MD5_Final
// 功能:MD5最后变换
// 参数:strContent:指向文件内容缓冲区; iLength:文件内容长度; output:摘要输出缓
冲区
// 返回:无
void MD5_Final( MD5_State *s, unsigned char digest[16] )
{
unsigned char bits[8];
unsigned int index, padLen;
Encode (bits, s->count, 8);
//! 长度小于448位(mod 512),对明文进行填充
index = (unsigned int)((s->count[0] >> 3) & 0x3f); padLen = (index < 56) ? (56 - index) : (120 - index); MD5_Update( s, s->PADDING, padLen );
MD5_Update( s, bits, 8);
Encode( digest, s->state, 16 );
MD5_memset ((unsigned char*)s, 0, sizeof (*s)); MD5_Init( s );
}
// 名称:SHA_digest
// 功能:生成文件摘要
// 参数:strContent:指向文件内容缓冲区; iLength:文件内容长度; output:摘要输出缓冲区
// 返回:无
void md5_digest( void const *strContent, unsigned int iLength, unsigned char
output[16] )
{
unsigned char *q = (unsigned char*)strContent; MD5_State s;
MD5_Init( &s );
MD5_Update( &s, q, iLength );
MD5_Final( &s, output );
}
//main.c程序:
#include
#include
#include
#include
#include "md5.h"
//! 文件最大2M
#define MAX_FILE 1024*1024*2
// 名称:FileIn
// 功能:读取磁盘文件到内存
// 参数:strFile:文件名称;inBuff:指向文件内容缓冲区 // 返回:实际读取内容大小(字节)
int FileIn( const char *strFile, unsigned char *&inBuff )
{
int iFileLen=0, iBuffLen=0;
//! 打开密文文件
CFile file( strFile, CFile::modeRead );
iFileLen = ( int )file.GetLength(); if( iFileLen>MAX_FILE )
{
printf( "文件长度不能大于 %dM,!\n", MAX_FILE/(1024*1024) );
goto out;
}
iBuffLen = iFileLen;
inBuff = new unsigned char[iBuffLen]; if( !inBuff )
goto out;
ZeroMemory( inBuff, iBuffLen );
file.Read( inBuff, iFileLen ); file.Close();
out:
return iBuffLen;
}
// 名称:usage
// 功能:帮助信息
// 参数:应用程序名称
// 返回:无
void Usage( const char *appname ) {
printf( "\n\tusage: md5 文件\n" );
}
// 名称:CheckParse
// 功能:校验应用程序入口参数
// 参数:argc等于main主函数argc参数，argv指向main主函数argv参数 // 返回:若参数合法返回true，否则返回false
// 备注:简单的入口参数校验
bool CheckParse( int argc, char** argv )
{
if( argc != 2 )
{
Usage( argv[0] );
return false;
}
return true;
}
//主程序
int main( int argc, char **argv ) {
int len , i ,j;
char FileName[20];
char *ky=""; //初始密钥
unsigned char output[16]; //输出摘要
unsigned char *inBuffer=(unsigned char *)malloc(MAX_FILE); //输入缓冲区 unsigned char *tempBuffer=(unsigned char *)malloc(MAX_FILE + 64); //第一次HASH
的参数
unsigned char Buffer2[80]; //第二次HASH
unsigned char key[16];
unsigned char ipad[64], opad[64];
CheckParse(argc,argv);
strcpy(FileName,argv[1]);
len = FileIn(FileName, inBuffer);
if(strlen(ky) > 16 )
md5_digest(ky, strlen(ky), key); else if(strlen(ky) < 16 )
{
i=0;
while(ky[i]!='\0')
{
key[i]=ky[i];
i++;
}
while(i<16)
{
key[i]=0x00;
i++;
}
}
else
for(i=0;i<16;i++)
key[i]=ky[i];
for(i=0;i<64;i++)
{
ipad[i]=0x36;
opad[i]=0x5c;
}
for(i=0;i<16;i++)
{
ipad[i]=key[i] ^ ipad[i]; //K ? ipad opad[i]=key[i] ^ opad[i]; //K ? opad }
for(i=0;i<64;i++)
tempBuffer[i]=ipad[i]; for(i=64;i
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