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/*
* DLIES
* (C) 1999-2007 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_DLIES_H__
#define BOTAN_DLIES_H__
#include <botan/pubkey.h>
#include <botan/mac.h>
#include <botan/kdf.h>
namespace Botan {
/**
* DLIES Encryption
*/
class BOTAN_DLL DLIES_Encryptor : public PK_Encryptor
{
public:
DLIES_Encryptor(const PK_Key_Agreement_Key&,
KDF* kdf,
MessageAuthenticationCode* mac,
size_t mac_key_len = 20);
void set_other_key(const std::vector<byte>&);
private:
std::vector<byte> enc(const byte[], size_t,
RandomNumberGenerator&) const;
size_t maximum_input_size() const;
std::vector<byte> other_key, my_key;
PK_Key_Agreement ka;
std::unique_ptr<KDF> kdf;
std::unique_ptr<MessageAuthenticationCode> mac;
size_t mac_keylen;
};
/**
* DLIES Decryption
*/
class BOTAN_DLL DLIES_Decryptor : public PK_Decryptor
{
public:
DLIES_Decryptor(const PK_Key_Agreement_Key&,
KDF* kdf,
MessageAuthenticationCode* mac,
size_t mac_key_len = 20);
private:
secure_vector<byte> dec(const byte[], size_t) const;
std::vector<byte> my_key;
PK_Key_Agreement ka;
std::unique_ptr<KDF> kdf;
std::unique_ptr<MessageAuthenticationCode> mac;
size_t mac_keylen;
};
}
#endif
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