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/*************************************************
* S2K Lookup *
* (C) 1999-2007 Jack Lloyd *
*************************************************/
#include <botan/def_eng.h>
#include <botan/lookup.h>
#include <botan/libstate.h>
#include <botan/parsing.h>
#if defined(BOTAN_HAS_PBKDF1)
#include <botan/pbkdf1.h>
#endif
#if defined(BOTAN_HAS_PBKDF2)
#include <botan/pbkdf2.h>
#include <botan/hmac.h>
#endif
#if defined(BOTAN_HAS_PGPS2K)
#include <botan/pgp_s2k.h>
#endif
namespace Botan {
/*************************************************
* Look for an algorithm with this name *
*************************************************/
S2K* Default_Engine::find_s2k(const std::string& algo_spec) const
{
std::vector<std::string> name = parse_algorithm_name(algo_spec);
if(name.empty())
return 0;
const std::string algo_name = global_state().deref_alias(name[0]);
#if defined(BOTAN_HAS_PBKDF1)
if(algo_name == "PBKDF1")
{
if(name.size() == 2)
return new PKCS5_PBKDF1(get_hash(name[1]));
throw Invalid_Algorithm_Name(algo_spec);
}
#endif
#if defined(BOTAN_HAS_PBKDF2)
if(algo_name == "PBKDF2")
{
if(name.size() == 2)
return new PKCS5_PBKDF2(new HMAC(get_hash(name[1])));
throw Invalid_Algorithm_Name(algo_spec);
}
#endif
#if defined(BOTAN_HAS_PGPS2K)
if(algo_name == "OpenPGP-S2K")
{
if(name.size() == 2)
return new OpenPGP_S2K(get_hash(name[1]));
throw Invalid_Algorithm_Name(algo_spec);
}
#endif
return 0;
}
}
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