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/*
100% free public domain implementation of the HMAC-SHA1 algorithm
by Chien-Chung, Chung (Jim Chung) <jimchung1221@gmail.com>
*/
#ifndef __HMAC_SHA1_H__
#define __HMAC_SHA1_H__
#include "SHA1.h"
typedef unsigned char BYTE ;
class CHMAC_SHA1 : public CSHA1
{
private:
BYTE m_ipad[64];
BYTE m_opad[64];
char * szReport ;
char * SHA1_Key ;
char * AppendBuf1 ;
char * AppendBuf2 ;
public:
enum {
SHA1_DIGEST_LENGTH = 20,
SHA1_BLOCK_SIZE = 64,
HMAC_BUF_LEN = 4096
} ;
CHMAC_SHA1()
:szReport(new char[HMAC_BUF_LEN]),
SHA1_Key(new char[HMAC_BUF_LEN]),
AppendBuf1(new char[HMAC_BUF_LEN]),
AppendBuf2(new char[HMAC_BUF_LEN])
{}
~CHMAC_SHA1()
{
delete[] szReport ;
delete[] AppendBuf1 ;
delete[] AppendBuf2 ;
delete[] SHA1_Key ;
}
void HMAC_SHA1(BYTE *text, int text_len, BYTE *key, int key_len, BYTE *digest);
};
#endif /* __HMAC_SHA1_H__ */
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