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/*************************************************
* EMSA4 Header File *
* (C) 1999-2007 Jack Lloyd *
*************************************************/
#ifndef BOTAN_EMSA4_H__
#define BOTAN_EMSA4_H__
#include <botan/pk_pad.h>
#include <botan/hash.h>
#include <botan/kdf.h>
namespace Botan {
/*************************************************
* EMSA4 *
*************************************************/
class BOTAN_DLL EMSA4 : public EMSA
{
public:
EMSA4(HashFunction*);
EMSA4(HashFunction*, u32bit);
~EMSA4() { delete hash; delete mgf; }
private:
void update(const byte[], u32bit);
SecureVector<byte> raw_data();
SecureVector<byte> encoding_of(const MemoryRegion<byte>&, u32bit,
RandomNumberGenerator& rng);
bool verify(const MemoryRegion<byte>&, const MemoryRegion<byte>&,
u32bit) throw();
u32bit SALT_SIZE;
HashFunction* hash;
const MGF* mgf;
};
}
#endif
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