这段代码怎么个用法?谁给个计算字符串MD5码的例子。谢谢
cpp:#include "stdafx.h"
#include "classmd5.h"#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endifCMD5Sum::CMD5Sum()
{
memset(m_rawHash, 0, sizeof(m_rawHash));
}CString CMD5Sum::Calculate(const CString& sSource)
{
return Calculate((const unsigned char*)(LPCTSTR)sSource, sSource.GetLength()*sizeof(TCHAR));
}CString CMD5Sum::Calculate(const unsigned char* pachSource, ULONGLONG nLen)
{
MD5_CTX context; MD5Init(&context); //init ULONGLONG dwOffset = 0;
while(dwOffset < nLen)
{
ULONGLONG partLen = nLen - dwOffset;
UINT4 dwLen = -1;
if(partLen < dwLen) dwLen = (UINT4)partLen; MD5Update(&context, pachSource + dwOffset, dwLen);//calc dwOffset += dwLen;
} MD5Final(m_rawHash, &context);//final m_sHash.Empty();
for (int i = 0; i < 16; i++)
{
CString sT;
sT.Format(_T("%02X"), m_rawHash[i]);
m_sHash += sT;
} return m_sHash;
}
CString CMD5Sum::GetHash() const
{
return m_sHash;
}unsigned char CMD5Sum::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
};/* MD5 initialization. Begins an MD5 operation, writing a new context.
*/
void CMD5Sum::MD5Init (MD5_CTX *context)
{
context->count[0] = context->count[1] = 0;
/* Load magic initialization constants.
*/
context->state[0] = 0x67452301;
context->state[1] = 0xefcdab89;
context->state[2] = 0x98badcfe;
context->state[3] = 0x10325476;
}/* MD5 block update operation. Continues an MD5 message-digest
operation, processing another message block, and updating the
context.
*/
void CMD5Sum::MD5Update (MD5_CTX *context, const unsigned char *input, UINT4 inputLen)
{
UINT4 i, index, partLen; /* Compute number of bytes mod 64 */
index = ((context->count[0] >> 3) & 0x3F); /* Update number of bits */
if ((context->count[0] += (UINT4)(inputLen << 3)) < (inputLen << 3))
context->count[1]++;
context->count[1] += (UINT4)(inputLen >> 29); partLen = 64 - index; /* Transform as many times as possible.
*/
if (inputLen >= partLen)
{
MD5_memcpy((POINTER)&context->buffer[index], (POINTER)input, partLen);
MD5Transform (context->state, context->buffer); for (i = partLen; i + 63 < inputLen; i += 64)
MD5Transform (context->state, &input[i]); index = 0;
}
else
i = 0; /* Buffer remaining input */
MD5_memcpy( (POINTER)&context->buffer[index], (POINTER)&input[i], inputLen-i );
}/* MD5 finalization. Ends an MD5 message-digest operation, writing the
the message digest and zeroizing the context.
*/
void CMD5Sum::MD5Final (unsigned char digest[16], MD5_CTX *context)
{
unsigned char bits[8];
unsigned int index, padLen; /* Save number of bits */
Encode (bits, context->count, 8); /* Pad out to 56 mod 64.
*/
index = (unsigned int)((context->count[0] >> 3) & 0x3f);
padLen = (index < 56) ? (56 - index) : (120 - index);
MD5Update (context, PADDING, padLen); /* Append length (before padding) */
MD5Update (context, bits, 8);
/* Store state in digest */
Encode (digest, context->state, 16); /* Zeroize sensitive information.
*/
MD5_memset ((POINTER)context, 0, sizeof (*context));
}/* MD5 basic transformation. Transforms state based on block.
*/
void CMD5Sum::MD5Transform (UINT4 state[4], const unsigned char block[64])
{
UINT4 a = state[0], b = state[1], c = state[2], d = state[3], x[16]; Decode (x, block, 64); /* 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 */ state[0] += a;
state[1] += b;
state[2] += c;
state[3] += d; /* Zeroize sensitive information.
*/
MD5_memset ((POINTER)x, 0, sizeof (x));
}/* Encodes input (UINT4) into output (unsigned char). Assumes len is
a multiple of 4.
*/
void CMD5Sum::Encode (unsigned char *output, const UINT4 *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);
}
}/* Decodes input (unsigned char) into output (UINT4). Assumes len is
a multiple of 4.
*/
void CMD5Sum::Decode (UINT4 *output, const unsigned char *input, unsigned int len)
{
unsigned int i, j; for (i = 0, j = 0; j < len; i++, j += 4)
output[i] = ((UINT4)input[j]) | (((UINT4)input[j+1]) << 8) |
(((UINT4)input[j+2]) << 16) | (((UINT4)input[j+3]) << 24);
}/* Note: Replace "for loop" with standard memcpy if possible.
*/void CMD5Sum::MD5_memcpy (POINTER output, POINTER input, unsigned int len)
{
unsigned int i; for (i = 0; i < len; i++)
output[i] = input[i];
}/* Note: Replace "for loop" with standard memset if possible.
*/
void CMD5Sum::MD5_memset (POINTER output, int value, unsigned int len)
{
unsigned int i; for (i = 0; i < len; i++)
((char *)output)[i] = (char)value;
}
cpp:#include "stdafx.h"
#include "classmd5.h"#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endifCMD5Sum::CMD5Sum()
{
memset(m_rawHash, 0, sizeof(m_rawHash));
}CString CMD5Sum::Calculate(const CString& sSource)
{
return Calculate((const unsigned char*)(LPCTSTR)sSource, sSource.GetLength()*sizeof(TCHAR));
}CString CMD5Sum::Calculate(const unsigned char* pachSource, ULONGLONG nLen)
{
MD5_CTX context; MD5Init(&context); //init ULONGLONG dwOffset = 0;
while(dwOffset < nLen)
{
ULONGLONG partLen = nLen - dwOffset;
UINT4 dwLen = -1;
if(partLen < dwLen) dwLen = (UINT4)partLen; MD5Update(&context, pachSource + dwOffset, dwLen);//calc dwOffset += dwLen;
} MD5Final(m_rawHash, &context);//final m_sHash.Empty();
for (int i = 0; i < 16; i++)
{
CString sT;
sT.Format(_T("%02X"), m_rawHash[i]);
m_sHash += sT;
} return m_sHash;
}
CString CMD5Sum::GetHash() const
{
return m_sHash;
}unsigned char CMD5Sum::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
};/* MD5 initialization. Begins an MD5 operation, writing a new context.
*/
void CMD5Sum::MD5Init (MD5_CTX *context)
{
context->count[0] = context->count[1] = 0;
/* Load magic initialization constants.
*/
context->state[0] = 0x67452301;
context->state[1] = 0xefcdab89;
context->state[2] = 0x98badcfe;
context->state[3] = 0x10325476;
}/* MD5 block update operation. Continues an MD5 message-digest
operation, processing another message block, and updating the
context.
*/
void CMD5Sum::MD5Update (MD5_CTX *context, const unsigned char *input, UINT4 inputLen)
{
UINT4 i, index, partLen; /* Compute number of bytes mod 64 */
index = ((context->count[0] >> 3) & 0x3F); /* Update number of bits */
if ((context->count[0] += (UINT4)(inputLen << 3)) < (inputLen << 3))
context->count[1]++;
context->count[1] += (UINT4)(inputLen >> 29); partLen = 64 - index; /* Transform as many times as possible.
*/
if (inputLen >= partLen)
{
MD5_memcpy((POINTER)&context->buffer[index], (POINTER)input, partLen);
MD5Transform (context->state, context->buffer); for (i = partLen; i + 63 < inputLen; i += 64)
MD5Transform (context->state, &input[i]); index = 0;
}
else
i = 0; /* Buffer remaining input */
MD5_memcpy( (POINTER)&context->buffer[index], (POINTER)&input[i], inputLen-i );
}/* MD5 finalization. Ends an MD5 message-digest operation, writing the
the message digest and zeroizing the context.
*/
void CMD5Sum::MD5Final (unsigned char digest[16], MD5_CTX *context)
{
unsigned char bits[8];
unsigned int index, padLen; /* Save number of bits */
Encode (bits, context->count, 8); /* Pad out to 56 mod 64.
*/
index = (unsigned int)((context->count[0] >> 3) & 0x3f);
padLen = (index < 56) ? (56 - index) : (120 - index);
MD5Update (context, PADDING, padLen); /* Append length (before padding) */
MD5Update (context, bits, 8);
/* Store state in digest */
Encode (digest, context->state, 16); /* Zeroize sensitive information.
*/
MD5_memset ((POINTER)context, 0, sizeof (*context));
}/* MD5 basic transformation. Transforms state based on block.
*/
void CMD5Sum::MD5Transform (UINT4 state[4], const unsigned char block[64])
{
UINT4 a = state[0], b = state[1], c = state[2], d = state[3], x[16]; Decode (x, block, 64); /* 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 */ state[0] += a;
state[1] += b;
state[2] += c;
state[3] += d; /* Zeroize sensitive information.
*/
MD5_memset ((POINTER)x, 0, sizeof (x));
}/* Encodes input (UINT4) into output (unsigned char). Assumes len is
a multiple of 4.
*/
void CMD5Sum::Encode (unsigned char *output, const UINT4 *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);
}
}/* Decodes input (unsigned char) into output (UINT4). Assumes len is
a multiple of 4.
*/
void CMD5Sum::Decode (UINT4 *output, const unsigned char *input, unsigned int len)
{
unsigned int i, j; for (i = 0, j = 0; j < len; i++, j += 4)
output[i] = ((UINT4)input[j]) | (((UINT4)input[j+1]) << 8) |
(((UINT4)input[j+2]) << 16) | (((UINT4)input[j+3]) << 24);
}/* Note: Replace "for loop" with standard memcpy if possible.
*/void CMD5Sum::MD5_memcpy (POINTER output, POINTER input, unsigned int len)
{
unsigned int i; for (i = 0; i < len; i++)
output[i] = input[i];
}/* Note: Replace "for loop" with standard memset if possible.
*/
void CMD5Sum::MD5_memset (POINTER output, int value, unsigned int len)
{
unsigned int i; for (i = 0; i < len; i++)
((char *)output)[i] = (char)value;
}
str = CMD5Sum::Calculate(buf, 10);这个str就是计算出来的md5被格式化成字符串的数据,可以直接MessageBox或者cout出来
先:MD5Init (&objmd5);
然后:MD5Update(&objmd5, pData, DataLen);//pData:你的数据,DataLen:数据长度
最后:MD5Final (digest, &objmd5);//digest是一个16字节长的数据,里面就是md5的效验码了
void
MD5_hash( unsigned char *pData, unsigned long DataLen, unsigned char *result )
{
md5_state md;
unsigned char in[ 64 ];
unsigned long i; md5_init( &md ); for( i = 0; i < DataLen; i += 64 )
{
if( ( DataLen - i ) > 64 )
{
memcpy( in, pData + i, 64 );
md5_process( &md, in, 64 );
}
else
{
memcpy( in, pData + i, DataLen - i );
md5_process( &md, in, DataLen - i );
}
} md5_done( &md, result );
}