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/*
* EME1
* (C) 1999-2007 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_EME1_H__
#define BOTAN_EME1_H__
#include <botan/eme.h>
#include <botan/kdf.h>
#include <botan/hash.h>
namespace Botan {
/**
* EME1, aka OAEP
*/
class BOTAN_DLL EME1 : public EME
{
public:
u32bit maximum_input_size(u32bit) const;
/**
* @param hash object to use for hashing (takes ownership)
* @param P 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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