Botan  1.11.15
src/lib/block/aes/aes.h
Go to the documentation of this file.
00001 /*
00002 * AES
00003 * (C) 1999-2010 Jack Lloyd
00004 *
00005 * Botan is released under the Simplified BSD License (see license.txt)
00006 */
00007 
00008 #ifndef BOTAN_AES_H__
00009 #define BOTAN_AES_H__
00010 
00011 #include <botan/block_cipher.h>
00012 
00013 namespace Botan {
00014 
00015 /**
00016 * AES-128
00017 */
00018 class BOTAN_DLL AES_128 : public Block_Cipher_Fixed_Params<16, 16>
00019    {
00020    public:
00021       void encrypt_n(const byte in[], byte out[], size_t blocks) const;
00022       void decrypt_n(const byte in[], byte out[], size_t blocks) const;
00023 
00024       void clear();
00025 
00026       std::string name() const { return "AES-128"; }
00027       BlockCipher* clone() const { return new AES_128; }
00028    private:
00029       void key_schedule(const byte key[], size_t length);
00030 
00031       secure_vector<u32bit> EK, DK;
00032       secure_vector<byte> ME, MD;
00033    };
00034 
00035 /**
00036 * AES-192
00037 */
00038 class BOTAN_DLL AES_192 : public Block_Cipher_Fixed_Params<16, 24>
00039    {
00040    public:
00041       void encrypt_n(const byte in[], byte out[], size_t blocks) const;
00042       void decrypt_n(const byte in[], byte out[], size_t blocks) const;
00043 
00044       void clear();
00045 
00046       std::string name() const { return "AES-192"; }
00047       BlockCipher* clone() const { return new AES_192; }
00048    private:
00049       void key_schedule(const byte key[], size_t length);
00050 
00051       secure_vector<u32bit> EK, DK;
00052       secure_vector<byte> ME, MD;
00053    };
00054 
00055 /**
00056 * AES-256
00057 */
00058 class BOTAN_DLL AES_256 : public Block_Cipher_Fixed_Params<16, 32>
00059    {
00060    public:
00061       void encrypt_n(const byte in[], byte out[], size_t blocks) const;
00062       void decrypt_n(const byte in[], byte out[], size_t blocks) const;
00063 
00064       void clear();
00065 
00066       std::string name() const { return "AES-256"; }
00067       BlockCipher* clone() const { return new AES_256; }
00068    private:
00069       void key_schedule(const byte key[], size_t length);
00070 
00071       secure_vector<u32bit> EK, DK;
00072       secure_vector<byte> ME, MD;
00073    };
00074 
00075 }
00076 
00077 #endif