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/*************************************************
* EME1 Header File *
* (C) 1999-2007 Jack Lloyd *
*************************************************/
#ifndef BOTAN_EME1_H__
#define BOTAN_EME1_H__
#include <botan/eme.h>
#include <botan/kdf.h>
#include <botan/hash.h>
namespace Botan {
/*************************************************
* EME1 *
*************************************************/
class BOTAN_DLL EME1 : public EME
{
public:
u32bit maximum_input_size(u32bit) const;
/**
EME1 constructor. Hash will be deleted by ~EME1 (when mgf is deleted)
P is an optional label. Normally empty.
*/
EME1(HashFunction* hash, const std::string& P = "");
~EME1() { delete mgf; }
private:
SecureVector<byte> pad(const byte[], u32bit, u32bit,
RandomNumberGenerator&) const;
SecureVector<byte> unpad(const byte[], u32bit, u32bit) const;
const u32bit HASH_LENGTH;
SecureVector<byte> Phash;
MGF* mgf;
};
}
#endif
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