/*
* S2K
* (C) 1999-2007 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/

#include <botan/s2k.h>

namespace Botan {

/*
* Derive a key from a passphrase
*/
OctetString S2K::derive_key(u32bit key_len,
                            const std::string& passphrase) const
   {
   return derive(key_len, passphrase, salt, salt.size(), iterations());
   }

/*
* Set the number of iterations
*/
void S2K::set_iterations(u32bit i)
   {
   iter = i;
   }

/*
* Change the salt
*/
void S2K::change_salt(const byte new_salt[], u32bit length)
   {
   salt.set(new_salt, length);
   }

/*
* Change the salt
*/
void S2K::change_salt(const MemoryRegion<byte>& new_salt)
   {
   change_salt(new_salt.begin(), new_salt.size());
   }

/*
* Create a new random salt
*/
void S2K::new_random_salt(RandomNumberGenerator& rng,
                          u32bit length)
   {
   salt.resize(length);
   rng.randomize(salt, length);
   }

}