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/*************************************************
* PK Engine Lookup Source File *
* (C) 1999-2007 Jack Lloyd *
*************************************************/
#include <botan/pk_engine.h>
#include <botan/libstate.h>
#include <botan/engine.h>
namespace Botan {
namespace Engine_Core {
#if defined(BOTAN_HAS_IF_PUBLIC_KEY_FAMILY)
/*************************************************
* Acquire an IF op *
*************************************************/
IF_Operation* if_op(const BigInt& e, const BigInt& n, const BigInt& d,
const BigInt& p, const BigInt& q, const BigInt& d1,
const BigInt& d2, const BigInt& c)
{
Algorithm_Factory::Engine_Iterator i(global_state().algo_factory());
while(const Engine* engine = i.next())
{
IF_Operation* op = engine->if_op(e, n, d, p, q, d1, d2, c);
if(op)
return op;
}
throw Lookup_Error("Engine_Core::if_op: Unable to find a working engine");
}
#endif
#if defined(BOTAN_HAS_DSA)
/*************************************************
* Acquire a DSA op *
*************************************************/
DSA_Operation* dsa_op(const DL_Group& group, const BigInt& y, const BigInt& x)
{
Algorithm_Factory::Engine_Iterator i(global_state().algo_factory());
while(const Engine* engine = i.next())
{
DSA_Operation* op = engine->dsa_op(group, y, x);
if(op)
return op;
}
throw Lookup_Error("Engine_Core::dsa_op: Unable to find a working engine");
}
#endif
#if defined(BOTAN_HAS_NYBERG_RUEPPEL)
/*************************************************
* Acquire a NR op *
*************************************************/
NR_Operation* nr_op(const DL_Group& group, const BigInt& y, const BigInt& x)
{
Algorithm_Factory::Engine_Iterator i(global_state().algo_factory());
while(const Engine* engine = i.next())
{
NR_Operation* op = engine->nr_op(group, y, x);
if(op)
return op;
}
throw Lookup_Error("Engine_Core::nr_op: Unable to find a working engine");
}
#endif
#if defined(BOTAN_HAS_ELGAMAL)
/*************************************************
* Acquire an ElGamal op *
*************************************************/
ELG_Operation* elg_op(const DL_Group& group, const BigInt& y, const BigInt& x)
{
Algorithm_Factory::Engine_Iterator i(global_state().algo_factory());
while(const Engine* engine = i.next())
{
ELG_Operation* op = engine->elg_op(group, y, x);
if(op)
return op;
}
throw Lookup_Error("Engine_Core::elg_op: Unable to find a working engine");
}
#endif
#if defined(BOTAN_HAS_DIFFIE_HELLMAN)
/*************************************************
* Acquire a DH op *
*************************************************/
DH_Operation* dh_op(const DL_Group& group, const BigInt& x)
{
Algorithm_Factory::Engine_Iterator i(global_state().algo_factory());
while(const Engine* engine = i.next())
{
DH_Operation* op = engine->dh_op(group, x);
if(op)
return op;
}
throw Lookup_Error("Engine_Core::dh_op: Unable to find a working engine");
}
#endif
#if defined(BOTAN_HAS_ECDSA)
/*************************************************
* Acquire an ECDSA op *
*************************************************/
ECDSA_Operation* ecdsa_op(const EC_Domain_Params& dom_pars,
const BigInt& priv_key,
const PointGFp& pub_key)
{
Algorithm_Factory::Engine_Iterator i(global_state().algo_factory());
while(const Engine* engine = i.next())
{
ECDSA_Operation* op = engine->ecdsa_op(dom_pars, priv_key, pub_key);
if(op)
return op;
}
throw Lookup_Error("Engine_Core::ecdsa_op: Unable to find a working engine");
}
#endif
#if defined(BOTAN_HAS_ECKAEG)
/*************************************************
* Acquire a ECKAEG op *
*************************************************/
ECKAEG_Operation* eckaeg_op(const EC_Domain_Params& dom_pars,
const BigInt& priv_key,
const PointGFp& pub_key)
{
Algorithm_Factory::Engine_Iterator i(global_state().algo_factory());
while(const Engine* engine = i.next())
{
ECKAEG_Operation* op = engine->eckaeg_op(dom_pars, priv_key, pub_key);
if(op)
return op;
}
throw Lookup_Error("Engine_Core::eckaeg_op: Unable to find a working engine");
}
#endif
/*************************************************
* Acquire a modular exponentiator *
*************************************************/
Modular_Exponentiator* mod_exp(const BigInt& n, Power_Mod::Usage_Hints hints)
{
Algorithm_Factory::Engine_Iterator i(global_state().algo_factory());
while(const Engine* engine = i.next())
{
Modular_Exponentiator* op = engine->mod_exp(n, hints);
if(op)
return op;
}
throw Lookup_Error("Engine_Core::mod_exp: Unable to find a working engine");
}
}
}
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