cxx: implement "boxes"

2 files changed, 213 insertions, 0 deletions

diff --git a/cxx/include/aesnixx/all.hpp b/cxx/include/aesnixx/all.hpp
index 417d9ea..7c80d3b 100644
--- a/cxx/include/aesnixx/all.hpp
+++ b/cxx/include/aesnixx/all.hpp
@@ -11,6 +11,7 @@
 #include "aes.hpp"
 #include "algorithm.hpp"
 #include "api.hpp"
+#include "box.hpp"
 #include "data.hpp"
 #include "debug.hpp"
 #include "error.hpp"
diff --git a/cxx/include/aesnixx/box.hpp b/cxx/include/aesnixx/box.hpp
new file mode 100644
index 0000000..69383a8
--- /dev/null
+++ b/cxx/include/aesnixx/box.hpp
@@ -0,0 +1,212 @@
+/**
+ * \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.
+ */
+
+#pragma once
+
+#include "algorithm.hpp"
+#include "error.hpp"
+#include "mode.hpp"
+
+#include <aesni/all.h>
+
+#include <cassert>
+#include <cstddef>
+
+#include <iostream>
+#include <string>
+#include <vector>
+
+namespace aesni
+{
+    class Box
+    {
+    public:
+        typedef AesNI_BoxBlock Block;
+        typedef AesNI_BoxKey Key;
+
+        static std::string format_key(const Key& src, Algorithm algorithm)
+        {
+            AesNI_BoxKeyString str;
+            aesni_box_format_key(
+                &str, algorithm, &src, ErrorDetailsThrowsInDestructor());
+            return reinterpret_cast<const char*>(&str);
+        }
+
+        static std::string format_block(const Block& src, Algorithm algorithm)
+        {
+            AesNI_BoxBlockString str;
+            aesni_box_format_block(
+                &str, algorithm, &src, ErrorDetailsThrowsInDestructor());
+            return reinterpret_cast<const char*>(&str);
+        }
+
+        static void parse_block(
+            Block& dest,
+            Algorithm algorithm,
+            const char* src)
+        {
+            aesni_box_parse_block(&dest, algorithm, src,
+                ErrorDetailsThrowsInDestructor());
+        }
+
+        static void parse_block(
+            Block& dest,
+            Algorithm algorithm,
+            const std::string& src)
+        {
+            parse_block(dest, algorithm, src.c_str());
+        }
+
+        static void parse_key(
+            Key& dest,
+            Algorithm algorithm,
+            const char* src)
+        {
+            aesni_box_parse_key(&dest, algorithm, src,
+                ErrorDetailsThrowsInDestructor());
+        }
+
+        static void parse_key(
+            Key& dest,
+            Algorithm algorithm,
+            const std::string& src)
+        {
+            parse_key(dest, algorithm, src.c_str());
+        }
+
+        Box(Algorithm algorithm, const Key& key)
+            : algorithm(algorithm)
+            , mode(AESNI_ECB)
+        {
+            aesni_box_init(&impl, algorithm, &key, mode, nullptr,
+                ErrorDetailsThrowsInDestructor());
+        }
+
+        Box(Algorithm algorithm, const Key& key, Mode mode, const Block& iv)
+            : algorithm(algorithm)
+            , mode(mode)
+        {
+            aesni_box_init(&impl, algorithm, &key, mode, &iv,
+                ErrorDetailsThrowsInDestructor());
+        }
+
+        void encrypt_block(const Block& plaintext, Block& ciphertext)
+        {
+            aesni_box_encrypt_block(
+                &impl, &plaintext, &ciphertext,
+                ErrorDetailsThrowsInDestructor());
+        }
+
+        void decrypt_block(const Block& ciphertext, Block& plaintext)
+        {
+            aesni_box_decrypt_block(
+                &impl, &ciphertext, &plaintext,
+                ErrorDetailsThrowsInDestructor());
+        }
+
+        std::vector<unsigned char> encrypt_buffer(
+            const void* src_buf,
+            std::size_t src_size)
+        {
+            std::size_t dest_size;
+
+            aesni_box_encrypt_buffer(
+                &impl,
+                src_buf,
+                src_size,
+                nullptr,
+                &dest_size,
+                aesni::ErrorDetailsThrowsInDestructor());
+
+            std::vector<unsigned char> dest_buf;
+            dest_buf.resize(dest_size);
+
+            aesni_box_encrypt_buffer(
+                &impl,
+                src_buf,
+                src_size,
+                dest_buf.data(),
+                &dest_size,
+                aesni::ErrorDetailsThrowsInDestructor());
+
+            dest_buf.resize(dest_size);
+            return dest_buf;
+        }
+
+        std::vector<unsigned char> decrypt_buffer(
+            const void* src_buf,
+            std::size_t src_size)
+        {
+            std::size_t dest_size;
+
+            aesni_box_decrypt_buffer(
+                &impl,
+                src_buf,
+                src_size,
+                nullptr,
+                &dest_size,
+                aesni::ErrorDetailsThrowsInDestructor());
+
+            std::vector<unsigned char> dest_buf;
+            dest_buf.resize(dest_size);
+
+            aesni_box_decrypt_buffer(
+                &impl,
+                src_buf,
+                src_size,
+                dest_buf.data(),
+                &dest_size,
+                aesni::ErrorDetailsThrowsInDestructor());
+
+            dest_buf.resize(dest_size);
+            return dest_buf;
+        }
+
+        std::string format_block(const Block& src)
+        {
+            return format_block(src, get_algorithm());
+        }
+
+        std::string format_key(const Key& src)
+        {
+            return format_key(src, get_algorithm());
+        }
+
+        void parse_block(Block& dest, const char* src)
+        {
+            parse_block(dest, get_algorithm(), src);
+        }
+
+        void parse_block(Block& dest, const std::string& src)
+        {
+            parse_block(dest, src.c_str());
+        }
+
+        void parse_key(Key& dest, const char* src)
+        {
+            parse_key(dest, get_algorithm(), src);
+        }
+
+        void parse_key(Key& dest, const std::string& src)
+        {
+            parse_key(dest, src.c_str());
+        }
+
+        Algorithm get_algorithm() const { return algorithm; }
+
+        Mode get_mode() const { return mode; }
+
+    private:
+        Key key;
+
+        Algorithm algorithm;
+        Mode mode;
+
+        AesNI_Box impl;
+    };
+}