1 files changed, 173 insertions, 0 deletions
diff --git a/src/libstate/pk_engine.cpp b/src/libstate/pk_engine.cpp
new file mode 100644
index 000000000..7b8e7d8fc
--- /dev/null
+++ b/src/libstate/pk_engine.cpp
@@ -0,0 +1,173 @@
+/*************************************************
+* 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");
+   }
+
+}
+
+}