khanat-opennel-code/code/nelns/login_system/nel_launcher_windows_ext/Md5.h

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// Md5.h: interface for the CMd5 class.
//
//////////////////////////////////////////////////////////////////////
#if !defined(AFX_MD5_H__02391EF3_6296_4823_BC8C_D8B3DFE719B2__INCLUDED_)
#define AFX_MD5_H__02391EF3_6296_4823_BC8C_D8B3DFE719B2__INCLUDED_
#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
#define UINT4 unsigned long
#define MD5_BLOCK_SIZE 64 // Operate on the input in 64 byte chunks.
#define MD5_COUNT_SIZE 2 // The bit cnt of the input is this big.
#define MD5_XFORM_SIZE 16 // The xform buffer is this long.
enum MD5_PadMode{normal, to_end, finish};
class CMD5
{
private:
// Operate on the input file one block at a time.
unsigned char manip_block[MD5_BLOCK_SIZE];
// Index to next empty manip_block position.
// If block_idx == MD5_BLOCK_SIZE, manip_block is full.
int block_idx;
// The bit count of the input file, mod 2^64, lsb first.
UINT4 count[MD5_COUNT_SIZE];
// The A,B,C,D, components of the digest in the making.
UINT4 a,b,c,d;
// The manip_block is converted into this array of unsigned integers
// to me used by the transformation routine.
UINT4 xform_buf[MD5_XFORM_SIZE];
public:
CMD5();
CMD5(CFile& InputFile);
void SetContent(CString csContent);
void GetDigest(unsigned char*); // Pointer to an array 16 bytes long. Large enough to hold 128 bits of digest, ls byte first.
CString ConvertToAscii(unsigned char* lpszBuff);
// Helper functions
private:
void MD5_Decode(); // Convert a manip_block of data from the input to the xform_buf to be transformed.
void MD5_IncCount(int); // Keep track of the bit length of the input, as successive blocks are read.
void MD5_Pad(MD5_PadMode); // Perform padding functions.
void MD5_StoreCnt(); // Store the bit length of the input into the current manip_block.
void MD5_Xform(); // Do the transformation.
};
#endif // !defined(AFX_MD5_H__02391EF3_6296_4823_BC8C_D8B3DFE719B2__INCLUDED_)