/*
* Bcrypt Password Hashing
* (C) 2011 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/

#ifndef BOTAN_BCRYPT_H_
#define BOTAN_BCRYPT_H_

#include <botan/types.h>
#include <string>

namespace Botan {

class RandomNumberGenerator;

/**
* Create a password hash using Bcrypt
* @param password the password
* @param rng a random number generator
* @param work_factor how much work to do to slow down guessing attacks
*
* @see http://www.usenix.org/events/usenix99/provos/provos_html/
*/
std::string BOTAN_PUBLIC_API(2,0) generate_bcrypt(const std::string& password,
                                      RandomNumberGenerator& rng,
                                      uint16_t work_factor = 10);

/**
* Check a previously created password hash
* @param password the password to check against
* @param hash the stored hash to check against
*/
bool BOTAN_PUBLIC_API(2,0) check_bcrypt(const std::string& password,
                            const std::string& hash);

}

#endif
