significant virtual-method refactor to streaming interface

include/aes.hpp

@@ -0,0 +1,23 @@
+#ifndef __AES_HPP__
+#define __AES_HPP__
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <memory>
+
+namespace Athena
+{
+
+class IAES
+{
+public:
+    virtual void encrypt(const uint8_t* iv, const uint8_t* inbuf, uint8_t* outbuf, uint64_t len)=0;
+    virtual void decrypt(const uint8_t* iv, const uint8_t* inbuf, uint8_t* outbuf, uint64_t len)=0;
+    virtual void setKey(const uint8_t* key)=0;
+};
+
+std::unique_ptr<IAES> NewAES();
+
+}
+
+#endif //__AES_HPP__