factoring out AES-specific stuff

1 files changed, 132 insertions, 0 deletions

diff --git a/cxx/include/aesnixx/aes.hpp b/cxx/include/aesnixx/aes.hpp
new file mode 100644
index 0000000..d30fd60
--- /dev/null
+++ b/cxx/include/aesnixx/aes.hpp
@@ -0,0 +1,132 @@
+/**
+ * \file
+ * \author Egor Tensin <Egor.Tensin@gmail.com>
+ * \date 2015
+ * \copyright This file is licensed under the terms of the MIT License.
+ *            See LICENSE.txt for details.
+ */
+
+#include "data.hpp"
+
+#include <aesni/all.h>
+
+#include <string>
+
+#pragma once
+
+namespace aesni
+{
+    namespace aes
+    {
+        typedef AesNI_Aes_Block Block;
+
+        typedef AesNI_Aes128_Key Key128;
+        typedef AesNI_Aes192_Key Key192;
+        typedef AesNI_Aes256_Key Key256;
+
+        inline void make_block(Block& dest, int hi3, int hi2, int lo1, int lo0)
+        {
+            aesni_aes_make_block(&dest, hi3, hi2, lo1, lo0);
+        }
+
+        inline void make_key(Key128& dest, int hi3, int hi2, int lo1, int lo0)
+        {
+            aesni_aes128_make_key(&dest, hi3, hi2, lo1, lo0);
+        }
+
+        inline void make_key(Key192& dest, int hi5, int hi4, int hi3, int lo2, int lo1, int lo0)
+        {
+            aesni_aes192_make_key(&dest, hi5, hi4, hi3, lo2, lo1, lo0);
+        }
+
+        inline void make_key(Key256& dest, int hi7, int hi6, int hi5, int hi4, int lo3, int lo2, int lo1, int lo0)
+        {
+            aesni_aes256_make_key(&dest, hi7, hi6, hi5, hi4, lo3, lo2, lo1, lo0);
+        }
+
+        std::string to_string(const Block& block)
+        {
+            AesNI_Aes_BlockString str;
+            aesni_aes_format_block(&str, &block, ErrorDetailsThrowsInDestructor());
+            return std::string(str.str);
+        }
+
+        std::string to_matrix_string(const Block& block)
+        {
+            AesNI_Aes_BlockMatrixString str;
+            aesni_aes_format_block_as_matrix(&str, &block, ErrorDetailsThrowsInDestructor());
+            return std::string(str.str);
+        }
+
+        inline void from_string(Block& dest, const char* src)
+        {
+            aesni_aes_parse_block(&dest, src, ErrorDetailsThrowsInDestructor());
+        }
+
+        inline void from_string(Block& dest, const std::string& src)
+        {
+            from_string(dest, src.c_str());
+        }
+
+        std::string to_string(const Key128& block)
+        {
+            AesNI_Aes128_KeyString str;
+            aesni_aes128_format_key(&str, &block, ErrorDetailsThrowsInDestructor());
+            return std::string(str.str);
+        }
+
+        std::string to_string(const Key192& block)
+        {
+            AesNI_Aes192_KeyString str;
+            aesni_aes192_format_key(&str, &block, ErrorDetailsThrowsInDestructor());
+            return std::string(str.str);
+        }
+
+        std::string to_string(const Key256& block)
+        {
+            AesNI_Aes256_KeyString str;
+            aesni_aes256_format_key(&str, &block, ErrorDetailsThrowsInDestructor());
+            return std::string(str.str);
+        }
+
+        inline void from_string(Key128& dest, const char* src)
+        {
+            aesni_aes128_parse_key(&dest, src, ErrorDetailsThrowsInDestructor());
+        }
+
+        inline void from_string(Key192& dest, const char* src)
+        {
+            aesni_aes192_parse_key(&dest, src, ErrorDetailsThrowsInDestructor());
+        }
+
+        inline void from_string(Key256& dest, const char* src)
+        {
+            aesni_aes256_parse_key(&dest, src, ErrorDetailsThrowsInDestructor());
+        }
+
+        inline void from_string(Key128& dest, const std::string& src)
+        {
+            return from_string(dest, src.c_str());
+        }
+
+        inline void from_string(Key192& dest, const std::string& src)
+        {
+            return from_string(dest, src.c_str());
+        }
+
+        inline void from_string(Key256& dest, const std::string& src)
+        {
+            return from_string(dest, src.c_str());
+        }
+
+        typedef AesNI_Aes128_RoundKeys RoundKeys128;
+        typedef AesNI_Aes192_RoundKeys RoundKeys192;
+        typedef AesNI_Aes256_RoundKeys RoundKeys256;
+
+        template <typename RoundKeysT>
+        inline std::size_t get_number_of_keys(const RoundKeysT& round_keys)
+        {
+            return sizeof(round_keys) / sizeof(Block128);
+        }
+    }
+}