Stub for AES class using Intel's AES-NI instructions and an engine for

providing it. Also stubs in the engine for VIA's AES instructions, but
needs CPUID checking also.

3 files changed, 85 insertions, 0 deletions

diff --git a/src/engine/aes_isa_eng/aes_isa_engine.cpp b/src/engine/aes_isa_eng/aes_isa_engine.cpp
new file mode 100644
index 000000000..c74f8bddc
--- /dev/null
+++ b/src/engine/aes_isa_eng/aes_isa_engine.cpp
@@ -0,0 +1,56 @@
+/*
+* Engine for AES instructions
+* (C) 2009 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#include <botan/aes_isa_engine.h>
+#include <botan/cpuid.h>
+
+#if defined(BOTAN_HAS_AES_INTEL)
+  #include <botan/aes_intel.h>
+#endif
+
+#if defined(BOTAN_HAS_AES_VIA)
+  #include <botan/aes_via.h>
+#endif
+
+namespace Botan {
+
+BlockCipher*
+AES_ISA_Engine::find_block_cipher(const SCAN_Name& request,
+                                  Algorithm_Factory&) const
+   {
+#if defined(BOTAN_HAS_AES_INTEL)
+   if(CPUID::has_intel_aes())
+      {
+      if(request.algo_name() == "AES")
+         return new AES_Intel;
+      if(request.algo_name() == "AES-128")
+         return new AES_Intel_128;
+      if(request.algo_name() == "AES-192")
+         return new AES_Intel_192;
+      if(request.algo_name() == "AES-256")
+         return new AES_Intel_256;
+      }
+#endif
+
+#if defined(BOTAN_HAS_AES_VIA)
+   if(CPUID::has_via_aes())
+      {
+      if(request.algo_name() == "AES")
+         return new AES_Via;
+      if(request.algo_name() == "AES-128")
+         return new AES_Via_128;
+      if(request.algo_name() == "AES-192")
+         return new AES_Via_192;
+      if(request.algo_name() == "AES-256")
+         return new AES_Via_256;
+      }
+#endif
+
+   return 0;
+   }
+
+}
diff --git a/src/engine/aes_isa_eng/aes_isa_engine.h b/src/engine/aes_isa_eng/aes_isa_engine.h
new file mode 100644
index 000000000..602a114a9
--- /dev/null
+++ b/src/engine/aes_isa_eng/aes_isa_engine.h
@@ -0,0 +1,26 @@
+/**
+* Engine for AES instructions
+* (C) 2009 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#ifndef BOTAN_AES_ISA_ENGINE_H__
+#define BOTAN_AES_ISA_ENGINE_H__
+
+#include <botan/engine.h>
+
+namespace Botan {
+
+class BOTAN_DLL AES_ISA_Engine : public Engine
+   {
+   public:
+      std::string provider_name() const { return "aes_isa"; }
+   private:
+      BlockCipher* find_block_cipher(const SCAN_Name&,
+                                     Algorithm_Factory&) const;
+   };
+
+}
+
+#endif
diff --git a/src/engine/aes_isa_eng/info.txt b/src/engine/aes_isa_eng/info.txt
new file mode 100644
index 000000000..c0695aaf3
--- /dev/null
+++ b/src/engine/aes_isa_eng/info.txt
@@ -0,0 +1,3 @@
+define ENGINE_AES_ISA
+
+load_on dep