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/*************************************************
* EMSA Header File *
* (C) 1999-2007 Jack Lloyd *
*************************************************/
#ifndef BOTAN_EMSA_H__
#define BOTAN_EMSA_H__
#include <botan/pk_util.h>
namespace Botan {
/*************************************************
* EMSA1 *
*************************************************/
class BOTAN_DLL EMSA1 : public EMSA
{
public:
EMSA1(const std::string&);
~EMSA1() { delete hash; }
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();
HashFunction* hash;
};
/*************************************************
* EMSA2 *
*************************************************/
class BOTAN_DLL EMSA2 : public EMSA
{
public:
EMSA2(const std::string&);
~EMSA2() { delete hash; }
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();
SecureVector<byte> empty_hash;
HashFunction* hash;
byte hash_id;
};
/*************************************************
* EMSA3 *
*************************************************/
class BOTAN_DLL EMSA3 : public EMSA
{
public:
EMSA3(const std::string&);
~EMSA3() { delete hash; }
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();
HashFunction* hash;
SecureVector<byte> hash_id;
};
/*************************************************
* EMSA4 *
*************************************************/
class BOTAN_DLL EMSA4 : public EMSA
{
public:
EMSA4(const std::string&, const std::string&);
EMSA4(const std::string&, const std::string&, 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();
const u32bit SALT_SIZE;
HashFunction* hash;
const MGF* mgf;
};
/*************************************************
* EMSA-Raw *
*************************************************/
class BOTAN_DLL EMSA_Raw : public EMSA
{
private:
void update(const byte[], u32bit);
SecureVector<byte> raw_data();
SecureVector<byte> encoding_of(const MemoryRegion<byte>&, u32bit,
RandomNumberGenerator&);
bool verify(const MemoryRegion<byte>&, const MemoryRegion<byte>&,
u32bit) throw();
SecureVector<byte> message;
};
}
#endif
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