/*
* PKCS #5 v2.0 PBE
* (C) 1999-2007,2014 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/

#ifndef BOTAN_PBE_PKCS_v20_H__
#define BOTAN_PBE_PKCS_v20_H__

#include <botan/secmem.h>
#include <botan/transform.h>
#include <botan/alg_id.h>
#include <botan/algo_factory.h>
#include <chrono>

namespace Botan {

/**
* Encrypt with PBES2 from PKCS #5 v2.0
* @param passphrase the passphrase to use for encryption
* @param msec how many milliseconds to run PBKDF2
* @param cipher specifies the block cipher to use to encrypt
* @param digest specifies the PRF to use with PBKDF2 (eg "HMAC(SHA-1)")
* @param rng a random number generator
*/
std::pair<AlgorithmIdentifier, std::vector<byte>>
BOTAN_DLL pbes2_encrypt(const secure_vector<byte>& key_bits,
                        const std::string& passphrase,
                        std::chrono::milliseconds msec,
                        const std::string& cipher,
                        const std::string& digest,
                        RandomNumberGenerator& rng,
                        Algorithm_Factory& af);

/**
* Decrypt a PKCS #5 v2.0 encrypted stream
* @param key_bits the input
* @param passphrase the passphrase to use for decryption
* @param params the PBES2 parameters
*/
secure_vector<byte>
BOTAN_DLL pbes2_decrypt(const secure_vector<byte>& key_bits,
                        const std::string& passphrase,
                        const std::vector<byte>& params,
                        Algorithm_Factory& af);

}

#endif
