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.

1 files changed, 74 insertions, 0 deletions

diff --git a/src/block/aes_intel/aes_intel.h b/src/block/aes_intel/aes_intel.h
new file mode 100644
index 000000000..b40c2d3f6
--- /dev/null
+++ b/src/block/aes_intel/aes_intel.h
@@ -0,0 +1,74 @@
+/**
+* AES using Intel's AES instructions
+* (C) 1999-2009 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#ifndef BOTAN_AES_INTEL_H__
+#define BOTAN_AES_INTEL_H__
+
+#include <botan/block_cipher.h>
+
+namespace Botan {
+
+class BOTAN_DLL AES_Intel : public BlockCipher
+   {
+   public:
+      void encrypt_n(const byte in[], byte out[], u32bit blocks) const;
+      void decrypt_n(const byte in[], byte out[], u32bit blocks) const;
+
+      void clear();
+      std::string name() const { return "AES"; }
+      BlockCipher* clone() const { return new AES_Intel; }
+
+      AES_Intel() : BlockCipher(16, 16, 32, 8) { ROUNDS = 14; }
+      AES_Intel(u32bit);
+   private:
+      void key_schedule(const byte[], u32bit);
+
+      u32bit ROUNDS;
+
+      SecureBuffer<u32bit, 56> EK;
+      SecureBuffer<byte, 16> ME;
+
+      SecureBuffer<u32bit, 56> DK;
+      SecureBuffer<byte, 16> MD;
+   };
+
+/**
+* AES-128
+*/
+class BOTAN_DLL AES_Intel_128 : public AES_Intel
+   {
+   public:
+      std::string name() const { return "AES-128"; }
+      BlockCipher* clone() const { return new AES_Intel_128; }
+      AES_Intel_128() : AES_Intel(16) {}
+   };
+
+/**
+* AES-192
+*/
+class BOTAN_DLL AES_Intel_192 : public AES_Intel
+   {
+   public:
+      std::string name() const { return "AES-192"; }
+      BlockCipher* clone() const { return new AES_Intel_192; }
+      AES_Intel_192() : AES_Intel(24) {}
+   };
+
+/**
+* AES-256
+*/
+class BOTAN_DLL AES_Intel_256 : public AES_Intel
+   {
+   public:
+      std::string name() const { return "AES-256"; }
+      BlockCipher* clone() const { return new AES_Intel_256; }
+      AES_Intel_256() : AES_Intel(32) {}
+   };
+
+}
+
+#endif