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// HmacSha1.h
// Implements HMAC-SHA-1 (RFC2104, FIPS-198)
#ifndef __CRYPTO_HMAC_SHA1_H
#define __CRYPTO_HMAC_SHA1_H
#include "Sha1Cls.h"
namespace NCrypto {
namespace NSha1 {
// Use: SetKey(key, keySize); for () Update(data, size); FinalFull(mac);
class CHmac
{
CContext _sha;
CContext _sha2;
public:
void SetKey(const Byte *key, size_t keySize);
void Update(const Byte *data, size_t dataSize) { _sha.Update(data, dataSize); }
// Final() : mac is recommended to be aligned for 4 bytes
// GetLoopXorDigest1() : mac is required to be aligned for 4 bytes
// The caller can use: UInt32 mac[NSha1::kNumDigestWords] and typecast to (Byte *) and (void *);
void Final(Byte *mac);
void GetLoopXorDigest1(void *mac, UInt32 numIteration);
};
}}
#endif
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