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/**
* (C) 2014 cryptosource GmbH
* (C) 2014 Falko Strenzke fstrenzke@cryptosource.de
*
* Distributed under the terms of the Botan license
*
*/
#ifndef BOTAN_MCE_KEM_H__
#define BOTAN_MCE_KEM_H__
#include <botan/mceliece.h>
#include <utility>
namespace Botan {
class BOTAN_DLL McEliece_KEM_Encryptor
{
public:
McEliece_KEM_Encryptor(const McEliece_PublicKey& public_key);
/**
* returns the pair (mceliece ciphertext, symmetric key)
*/
std::pair<secure_vector<byte>, secure_vector<byte>> encrypt(RandomNumberGenerator& rng);
private:
McEliece_Public_Operation m_raw_pub_op;
};
class BOTAN_DLL McEliece_KEM_Decryptor
{
public:
McEliece_KEM_Decryptor(const McEliece_PrivateKey& mce_key);
/**
* returns the derived 512-bit symmetric key
*/
secure_vector<Botan::byte> decrypt(const byte msg[], size_t msg_len);
/**
* returns the derived 512-bit symmetric key
*/
template<typename Alloc>
secure_vector<Botan::byte> decrypt_vec(const std::vector<byte, Alloc>& v)
{
return decrypt(&v[0], v.size());
}
private:
McEliece_Private_Operation m_raw_priv_op;
};
}
#endif /* h-guard */
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