aes256_cipher.h

// aes_cipher.h standart header - by jannik voss

/*
HEADER FILE INFORMATION:

language: C++11 not required
source: no source file needed

class:
	aes256_cipher
*/

#pragma once

#include <assert.h>


namespace crypto{

		// CLASS Aes_types
	class Aes_types
	{   // types used in the AES implementation
protected:
  #ifdef _MSC_VER
	typedef unsigned __int8 B;
	typedef unsigned __int32 W;
  #else
	typedef unsigned char B;
	typedef unsigned int W;
  #endif
public:
	typedef B bit8;
	typedef W bit32;

	static const bit32 Rcon[];
	static const bit8 T2[256];
	static const bit8 T3[256];
	static const bit8 T9[256];
	static const bit8 T11[256];
	static const bit8 T13[256];
	static const bit8 T14[256];
	static const bit8 Sbox[256];
	static const bit8 Rsbox[256];
	};

const Aes_types::bit32 Aes_types::Rcon[] = {  // Rijndael RCON Table
	0x01000000,0x02000000,0x04000000,0x08000000,
	0x10000000,0x20000000,0x40000000,0x80000000,
	0x1B000000,0x36000000};

//Rijndel Galois Multiplication lookup tables
const Aes_types::bit8 Aes_types::T2[256] = {
	0x00,0x02,0x04,0x06,0x08,0x0a,0x0c,0x0e,0x10,0x12,0x14,0x16,0x18,0x1a,0x1c,0x1e,
	0x20,0x22,0x24,0x26,0x28,0x2a,0x2c,0x2e,0x30,0x32,0x34,0x36,0x38,0x3a,0x3c,0x3e,
	0x40,0x42,0x44,0x46,0x48,0x4a,0x4c,0x4e,0x50,0x52,0x54,0x56,0x58,0x5a,0x5c,0x5e,
	0x60,0x62,0x64,0x66,0x68,0x6a,0x6c,0x6e,0x70,0x72,0x74,0x76,0x78,0x7a,0x7c,0x7e,
	0x80,0x82,0x84,0x86,0x88,0x8a,0x8c,0x8e,0x90,0x92,0x94,0x96,0x98,0x9a,0x9c,0x9e,
	0xa0,0xa2,0xa4,0xa6,0xa8,0xaa,0xac,0xae,0xb0,0xb2,0xb4,0xb6,0xb8,0xba,0xbc,0xbe,
	0xc0,0xc2,0xc4,0xc6,0xc8,0xca,0xcc,0xce,0xd0,0xd2,0xd4,0xd6,0xd8,0xda,0xdc,0xde,
	0xe0,0xe2,0xe4,0xe6,0xe8,0xea,0xec,0xee,0xf0,0xf2,0xf4,0xf6,0xf8,0xfa,0xfc,0xfe,
	0x1b,0x19,0x1f,0x1d,0x13,0x11,0x17,0x15,0x0b,0x09,0x0f,0x0d,0x03,0x01,0x07,0x05,
	0x3b,0x39,0x3f,0x3d,0x33,0x31,0x37,0x35,0x2b,0x29,0x2f,0x2d,0x23,0x21,0x27,0x25,
	0x5b,0x59,0x5f,0x5d,0x53,0x51,0x57,0x55,0x4b,0x49,0x4f,0x4d,0x43,0x41,0x47,0x45,
	0x7b,0x79,0x7f,0x7d,0x73,0x71,0x77,0x75,0x6b,0x69,0x6f,0x6d,0x63,0x61,0x67,0x65,
	0x9b,0x99,0x9f,0x9d,0x93,0x91,0x97,0x95,0x8b,0x89,0x8f,0x8d,0x83,0x81,0x87,0x85,
	0xbb,0xb9,0xbf,0xbd,0xb3,0xb1,0xb7,0xb5,0xab,0xa9,0xaf,0xad,0xa3,0xa1,0xa7,0xa5,
	0xdb,0xd9,0xdf,0xdd,0xd3,0xd1,0xd7,0xd5,0xcb,0xc9,0xcf,0xcd,0xc3,0xc1,0xc7,0xc5,
	0xfb,0xf9,0xff,0xfd,0xf3,0xf1,0xf7,0xf5,0xeb,0xe9,0xef,0xed,0xe3,0xe1,0xe7,0xe5};
const Aes_types::bit8 Aes_types::T3[256] = {
	0x00,0x03,0x06,0x05,0x0c,0x0f,0x0a,0x09,0x18,0x1b,0x1e,0x1d,0x14,0x17,0x12,0x11,
	0x30,0x33,0x36,0x35,0x3c,0x3f,0x3a,0x39,0x28,0x2b,0x2e,0x2d,0x24,0x27,0x22,0x21,
	0x60,0x63,0x66,0x65,0x6c,0x6f,0x6a,0x69,0x78,0x7b,0x7e,0x7d,0x74,0x77,0x72,0x71,
	0x50,0x53,0x56,0x55,0x5c,0x5f,0x5a,0x59,0x48,0x4b,0x4e,0x4d,0x44,0x47,0x42,0x41,
	0xc0,0xc3,0xc6,0xc5,0xcc,0xcf,0xca,0xc9,0xd8,0xdb,0xde,0xdd,0xd4,0xd7,0xd2,0xd1,
	0xf0,0xf3,0xf6,0xf5,0xfc,0xff,0xfa,0xf9,0xe8,0xeb,0xee,0xed,0xe4,0xe7,0xe2,0xe1,
	0xa0,0xa3,0xa6,0xa5,0xac,0xaf,0xaa,0xa9,0xb8,0xbb,0xbe,0xbd,0xb4,0xb7,0xb2,0xb1,
	0x90,0x93,0x96,0x95,0x9c,0x9f,0x9a,0x99,0x88,0x8b,0x8e,0x8d,0x84,0x87,0x82,0x81,
	0x9b,0x98,0x9d,0x9e,0x97,0x94,0x91,0x92,0x83,0x80,0x85,0x86,0x8f,0x8c,0x89,0x8a,
	0xab,0xa8,0xad,0xae,0xa7,0xa4,0xa1,0xa2,0xb3,0xb0,0xb5,0xb6,0xbf,0xbc,0xb9,0xba,
	0xfb,0xf8,0xfd,0xfe,0xf7,0xf4,0xf1,0xf2,0xe3,0xe0,0xe5,0xe6,0xef,0xec,0xe9,0xea,
	0xcb,0xc8,0xcd,0xce,0xc7,0xc4,0xc1,0xc2,0xd3,0xd0,0xd5,0xd6,0xdf,0xdc,0xd9,0xda,
	0x5b,0x58,0x5d,0x5e,0x57,0x54,0x51,0x52,0x43,0x40,0x45,0x46,0x4f,0x4c,0x49,0x4a,
	0x6b,0x68,0x6d,0x6e,0x67,0x64,0x61,0x62,0x73,0x70,0x75,0x76,0x7f,0x7c,0x79,0x7a,
	0x3b,0x38,0x3d,0x3e,0x37,0x34,0x31,0x32,0x23,0x20,0x25,0x26,0x2f,0x2c,0x29,0x2a,
	0x0b,0x08,0x0d,0x0e,0x07,0x04,0x01,0x02,0x13,0x10,0x15,0x16,0x1f,0x1c,0x19,0x1a};
const Aes_types::bit8 Aes_types::T9[256] = {
	0x00,0x09,0x12,0x1b,0x24,0x2d,0x36,0x3f,0x48,0x41,0x5a,0x53,0x6c,0x65,0x7e,0x77,
	0x90,0x99,0x82,0x8b,0xb4,0xbd,0xa6,0xaf,0xd8,0xd1,0xca,0xc3,0xfc,0xf5,0xee,0xe7,
	0x3b,0x32,0x29,0x20,0x1f,0x16,0x0d,0x04,0x73,0x7a,0x61,0x68,0x57,0x5e,0x45,0x4c,
	0xab,0xa2,0xb9,0xb0,0x8f,0x86,0x9d,0x94,0xe3,0xea,0xf1,0xf8,0xc7,0xce,0xd5,0xdc,
	0x76,0x7f,0x64,0x6d,0x52,0x5b,0x40,0x49,0x3e,0x37,0x2c,0x25,0x1a,0x13,0x08,0x01,
	0xe6,0xef,0xf4,0xfd,0xc2,0xcb,0xd0,0xd9,0xae,0xa7,0xbc,0xb5,0x8a,0x83,0x98,0x91,
	0x4d,0x44,0x5f,0x56,0x69,0x60,0x7b,0x72,0x05,0x0c,0x17,0x1e,0x21,0x28,0x33,0x3a,
	0xdd,0xd4,0xcf,0xc6,0xf9,0xf0,0xeb,0xe2,0x95,0x9c,0x87,0x8e,0xb1,0xb8,0xa3,0xaa,
	0xec,0xe5,0xfe,0xf7,0xc8,0xc1,0xda,0xd3,0xa4,0xad,0xb6,0xbf,0x80,0x89,0x92,0x9b,
	0x7c,0x75,0x6e,0x67,0x58,0x51,0x4a,0x43,0x34,0x3d,0x26,0x2f,0x10,0x19,0x02,0x0b,
	0xd7,0xde,0xc5,0xcc,0xf3,0xfa,0xe1,0xe8,0x9f,0x96,0x8d,0x84,0xbb,0xb2,0xa9,0xa0,
	0x47,0x4e,0x55,0x5c,0x63,0x6a,0x71,0x78,0x0f,0x06,0x1d,0x14,0x2b,0x22,0x39,0x30,
	0x9a,0x93,0x88,0x81,0xbe,0xb7,0xac,0xa5,0xd2,0xdb,0xc0,0xc9,0xf6,0xff,0xe4,0xed,
	0x0a,0x03,0x18,0x11,0x2e,0x27,0x3c,0x35,0x42,0x4b,0x50,0x59,0x66,0x6f,0x74,0x7d,
	0xa1,0xa8,0xb3,0xba,0x85,0x8c,0x97,0x9e,0xe9,0xe0,0xfb,0xf2,0xcd,0xc4,0xdf,0xd6,
	0x31,0x38,0x23,0x2a,0x15,0x1c,0x07,0x0e,0x79,0x70,0x6b,0x62,0x5d,0x54,0x4f,0x46};
const Aes_types::bit8 Aes_types::T11[256] = {
	0x00,0x0b,0x16,0x1d,0x2c,0x27,0x3a,0x31,0x58,0x53,0x4e,0x45,0x74,0x7f,0x62,0x69,
	0xb0,0xbb,0xa6,0xad,0x9c,0x97,0x8a,0x81,0xe8,0xe3,0xfe,0xf5,0xc4,0xcf,0xd2,0xd9,
	0x7b,0x70,0x6d,0x66,0x57,0x5c,0x41,0x4a,0x23,0x28,0x35,0x3e,0x0f,0x04,0x19,0x12,
	0xcb,0xc0,0xdd,0xd6,0xe7,0xec,0xf1,0xfa,0x93,0x98,0x85,0x8e,0xbf,0xb4,0xa9,0xa2,
	0xf6,0xfd,0xe0,0xeb,0xda,0xd1,0xcc,0xc7,0xae,0xa5,0xb8,0xb3,0x82,0x89,0x94,0x9f,
	0x46,0x4d,0x50,0x5b,0x6a,0x61,0x7c,0x77,0x1e,0x15,0x08,0x03,0x32,0x39,0x24,0x2f,
	0x8d,0x86,0x9b,0x90,0xa1,0xaa,0xb7,0xbc,0xd5,0xde,0xc3,0xc8,0xf9,0xf2,0xef,0xe4,
	0x3d,0x36,0x2b,0x20,0x11,0x1a,0x07,0x0c,0x65,0x6e,0x73,0x78,0x49,0x42,0x5f,0x54,
	0xf7,0xfc,0xe1,0xea,0xdb,0xd0,0xcd,0xc6,0xaf,0xa4,0xb9,0xb2,0x83,0x88,0x95,0x9e,
	0x47,0x4c,0x51,0x5a,0x6b,0x60,0x7d,0x76,0x1f,0x14,0x09,0x02,0x33,0x38,0x25,0x2e,
	0x8c,0x87,0x9a,0x91,0xa0,0xab,0xb6,0xbd,0xd4,0xdf,0xc2,0xc9,0xf8,0xf3,0xee,0xe5,
	0x3c,0x37,0x2a,0x21,0x10,0x1b,0x06,0x0d,0x64,0x6f,0x72,0x79,0x48,0x43,0x5e,0x55,
	0x01,0x0a,0x17,0x1c,0x2d,0x26,0x3b,0x30,0x59,0x52,0x4f,0x44,0x75,0x7e,0x63,0x68,
	0xb1,0xba,0xa7,0xac,0x9d,0x96,0x8b,0x80,0xe9,0xe2,0xff,0xf4,0xc5,0xce,0xd3,0xd8,
	0x7a,0x71,0x6c,0x67,0x56,0x5d,0x40,0x4b,0x22,0x29,0x34,0x3f,0x0e,0x05,0x18,0x13,
	0xca,0xc1,0xdc,0xd7,0xe6,0xed,0xf0,0xfb,0x92,0x99,0x84,0x8f,0xbe,0xb5,0xa8,0xa3};
const Aes_types::bit8 Aes_types::T13[256] = {
	0x00,0x0d,0x1a,0x17,0x34,0x39,0x2e,0x23,0x68,0x65,0x72,0x7f,0x5c,0x51,0x46,0x4b,
	0xd0,0xdd,0xca,0xc7,0xe4,0xe9,0xfe,0xf3,0xb8,0xb5,0xa2,0xaf,0x8c,0x81,0x96,0x9b,
	0xbb,0xb6,0xa1,0xac,0x8f,0x82,0x95,0x98,0xd3,0xde,0xc9,0xc4,0xe7,0xea,0xfd,0xf0,
	0x6b,0x66,0x71,0x7c,0x5f,0x52,0x45,0x48,0x03,0x0e,0x19,0x14,0x37,0x3a,0x2d,0x20,
	0x6d,0x60,0x77,0x7a,0x59,0x54,0x43,0x4e,0x05,0x08,0x1f,0x12,0x31,0x3c,0x2b,0x26,
	0xbd,0xb0,0xa7,0xaa,0x89,0x84,0x93,0x9e,0xd5,0xd8,0xcf,0xc2,0xe1,0xec,0xfb,0xf6,
	0xd6,0xdb,0xcc,0xc1,0xe2,0xef,0xf8,0xf5,0xbe,0xb3,0xa4,0xa9,0x8a,0x87,0x90,0x9d,
	0x06,0x0b,0x1c,0x11,0x32,0x3f,0x28,0x25,0x6e,0x63,0x74,0x79,0x5a,0x57,0x40,0x4d,
	0xda,0xd7,0xc0,0xcd,0xee,0xe3,0xf4,0xf9,0xb2,0xbf,0xa8,0xa5,0x86,0x8b,0x9c,0x91,
	0x0a,0x07,0x10,0x1d,0x3e,0x33,0x24,0x29,0x62,0x6f,0x78,0x75,0x56,0x5b,0x4c,0x41,
	0x61,0x6c,0x7b,0x76,0x55,0x58,0x4f,0x42,0x09,0x04,0x13,0x1e,0x3d,0x30,0x27,0x2a,
	0xb1,0xbc,0xab,0xa6,0x85,0x88,0x9f,0x92,0xd9,0xd4,0xc3,0xce,0xed,0xe0,0xf7,0xfa,
	0xb7,0xba,0xad,0xa0,0x83,0x8e,0x99,0x94,0xdf,0xd2,0xc5,0xc8,0xeb,0xe6,0xf1,0xfc,
	0x67,0x6a,0x7d,0x70,0x53,0x5e,0x49,0x44,0x0f,0x02,0x15,0x18,0x3b,0x36,0x21,0x2c,
	0x0c,0x01,0x16,0x1b,0x38,0x35,0x22,0x2f,0x64,0x69,0x7e,0x73,0x50,0x5d,0x4a,0x47,
	0xdc,0xd1,0xc6,0xcb,0xe8,0xe5,0xf2,0xff,0xb4,0xb9,0xae,0xa3,0x80,0x8d,0x9a,0x97};
const Aes_types::bit8 Aes_types::T14[256] = {
	0x00,0x0e,0x1c,0x12,0x38,0x36,0x24,0x2a,0x70,0x7e,0x6c,0x62,0x48,0x46,0x54,0x5a,
	0xe0,0xee,0xfc,0xf2,0xd8,0xd6,0xc4,0xca,0x90,0x9e,0x8c,0x82,0xa8,0xa6,0xb4,0xba,
	0xdb,0xd5,0xc7,0xc9,0xe3,0xed,0xff,0xf1,0xab,0xa5,0xb7,0xb9,0x93,0x9d,0x8f,0x81,
	0x3b,0x35,0x27,0x29,0x03,0x0d,0x1f,0x11,0x4b,0x45,0x57,0x59,0x73,0x7d,0x6f,0x61,
	0xad,0xa3,0xb1,0xbf,0x95,0x9b,0x89,0x87,0xdd,0xd3,0xc1,0xcf,0xe5,0xeb,0xf9,0xf7,
	0x4d,0x43,0x51,0x5f,0x75,0x7b,0x69,0x67,0x3d,0x33,0x21,0x2f,0x05,0x0b,0x19,0x17,
	0x76,0x78,0x6a,0x64,0x4e,0x40,0x52,0x5c,0x06,0x08,0x1a,0x14,0x3e,0x30,0x22,0x2c,
	0x96,0x98,0x8a,0x84,0xae,0xa0,0xb2,0xbc,0xe6,0xe8,0xfa,0xf4,0xde,0xd0,0xc2,0xcc,
	0x41,0x4f,0x5d,0x53,0x79,0x77,0x65,0x6b,0x31,0x3f,0x2d,0x23,0x09,0x07,0x15,0x1b,
	0xa1,0xaf,0xbd,0xb3,0x99,0x97,0x85,0x8b,0xd1,0xdf,0xcd,0xc3,0xe9,0xe7,0xf5,0xfb,
	0x9a,0x94,0x86,0x88,0xa2,0xac,0xbe,0xb0,0xea,0xe4,0xf6,0xf8,0xd2,0xdc,0xce,0xc0,
	0x7a,0x74,0x66,0x68,0x42,0x4c,0x5e,0x50,0x0a,0x04,0x16,0x18,0x32,0x3c,0x2e,0x20,
	0xec,0xe2,0xf0,0xfe,0xd4,0xda,0xc8,0xc6,0x9c,0x92,0x80,0x8e,0xa4,0xaa,0xb8,0xb6,
	0x0c,0x02,0x10,0x1e,0x34,0x3a,0x28,0x26,0x7c,0x72,0x60,0x6e,0x44,0x4a,0x58,0x56,
	0x37,0x39,0x2b,0x25,0x0f,0x01,0x13,0x1d,0x47,0x49,0x5b,0x55,0x7f,0x71,0x63,0x6d,
	0xd7,0xd9,0xcb,0xc5,0xef,0xe1,0xf3,0xfd,0xa7,0xa9,0xbb,0xb5,0x9f,0x91,0x83,0x8d};

const Aes_types::bit8 Aes_types::Sbox[256] = {  // Rijndael S-BOX
	0x63,0x7c,0x77,0x7b,0xf2,0x6b,0x6f,0xc5,0x30,0x01,0x67,0x2b,0xfe,0xd7,0xab,0x76,
	0xca,0x82,0xc9,0x7d,0xfa,0x59,0x47,0xf0,0xad,0xd4,0xa2,0xaf,0x9c,0xa4,0x72,0xc0,
	0xb7,0xfd,0x93,0x26,0x36,0x3f,0xf7,0xcc,0x34,0xa5,0xe5,0xf1,0x71,0xd8,0x31,0x15,
	0x04,0xc7,0x23,0xc3,0x18,0x96,0x05,0x9a,0x07,0x12,0x80,0xe2,0xeb,0x27,0xb2,0x75,
	0x09,0x83,0x2c,0x1a,0x1b,0x6e,0x5a,0xa0,0x52,0x3b,0xd6,0xb3,0x29,0xe3,0x2f,0x84,
	0x53,0xd1,0x00,0xed,0x20,0xfc,0xb1,0x5b,0x6a,0xcb,0xbe,0x39,0x4a,0x4c,0x58,0xcf,
	0xd0,0xef,0xaa,0xfb,0x43,0x4d,0x33,0x85,0x45,0xf9,0x02,0x7f,0x50,0x3c,0x9f,0xa8,
	0x51,0xa3,0x40,0x8f,0x92,0x9d,0x38,0xf5,0xbc,0xb6,0xda,0x21,0x10,0xff,0xf3,0xd2,
	0xcd,0x0c,0x13,0xec,0x5f,0x97,0x44,0x17,0xc4,0xa7,0x7e,0x3d,0x64,0x5d,0x19,0x73,
	0x60,0x81,0x4f,0xdc,0x22,0x2a,0x90,0x88,0x46,0xee,0xb8,0x14,0xde,0x5e,0x0b,0xdb,
	0xe0,0x32,0x3a,0x0a,0x49,0x06,0x24,0x5c,0xc2,0xd3,0xac,0x62,0x91,0x95,0xe4,0x79,
	0xe7,0xc8,0x37,0x6d,0x8d,0xd5,0x4e,0xa9,0x6c,0x56,0xf4,0xea,0x65,0x7a,0xae,0x08,
	0xba,0x78,0x25,0x2e,0x1c,0xa6,0xb4,0xc6,0xe8,0xdd,0x74,0x1f,0x4b,0xbd,0x8b,0x8a,
	0x70,0x3e,0xb5,0x66,0x48,0x03,0xf6,0x0e,0x61,0x35,0x57,0xb9,0x86,0xc1,0x1d,0x9e,
	0xe1,0xf8,0x98,0x11,0x69,0xd9,0x8e,0x94,0x9b,0x1e,0x87,0xe9,0xce,0x55,0x28,0xdf,
	0x8c,0xa1,0x89,0x0d,0xbf,0xe6,0x42,0x68,0x41,0x99,0x2d,0x0f,0xb0,0x54,0xbb,0x16};
const Aes_types::bit8 Aes_types::Rsbox[256] = { // Rijndael reverse S-BOX
	0x52,0x09,0x6a,0xd5,0x30,0x36,0xa5,0x38,0xbf,0x40,0xa3,0x9e,0x81,0xf3,0xd7,0xfb,
	0x7c,0xe3,0x39,0x82,0x9b,0x2f,0xff,0x87,0x34,0x8e,0x43,0x44,0xc4,0xde,0xe9,0xcb,
	0x54,0x7b,0x94,0x32,0xa6,0xc2,0x23,0x3d,0xee,0x4c,0x95,0x0b,0x42,0xfa,0xc3,0x4e,
	0x08,0x2e,0xa1,0x66,0x28,0xd9,0x24,0xb2,0x76,0x5b,0xa2,0x49,0x6d,0x8b,0xd1,0x25,
	0x72,0xf8,0xf6,0x64,0x86,0x68,0x98,0x16,0xd4,0xa4,0x5c,0xcc,0x5d,0x65,0xb6,0x92,
	0x6c,0x70,0x48,0x50,0xfd,0xed,0xb9,0xda,0x5e,0x15,0x46,0x57,0xa7,0x8d,0x9d,0x84,
	0x90,0xd8,0xab,0x00,0x8c,0xbc,0xd3,0x0a,0xf7,0xe4,0x58,0x05,0xb8,0xb3,0x45,0x06,
	0xd0,0x2c,0x1e,0x8f,0xca,0x3f,0x0f,0x02,0xc1,0xaf,0xbd,0x03,0x01,0x13,0x8a,0x6b,
	0x3a,0x91,0x11,0x41,0x4f,0x67,0xdc,0xea,0x97,0xf2,0xcf,0xce,0xf0,0xb4,0xe6,0x73,
	0x96,0xac,0x74,0x22,0xe7,0xad,0x35,0x85,0xe2,0xf9,0x37,0xe8,0x1c,0x75,0xdf,0x6e,
	0x47,0xf1,0x1a,0x71,0x1d,0x29,0xc5,0x89,0x6f,0xb7,0x62,0x0e,0xaa,0x18,0xbe,0x1b,
	0xfc,0x56,0x3e,0x4b,0xc6,0xd2,0x79,0x20,0x9a,0xdb,0xc0,0xfe,0x78,0xcd,0x5a,0xf4,
	0x1f,0xdd,0xa8,0x33,0x88,0x07,0xc7,0x31,0xb1,0x12,0x10,0x59,0x27,0x80,0xec,0x5f,
	0x60,0x51,0x7f,0xa9,0x19,0xb5,0x4a,0x0d,0x2d,0xe5,0x7a,0x9f,0x93,0xc9,0x9c,0xef,
	0xa0,0xe0,0x3b,0x4d,0xae,0x2a,0xf5,0xb0,0xc8,0xeb,0xbb,0x3c,0x83,0x53,0x99,0x61,
	0x17,0x2b,0x04,0x7e,0xba,0x77,0xd6,0x26,0xe1,0x69,0x14,0x63,0x55,0x21,0x0c,0x7d};

		// TEMPLATE CLASS Aes256_cipher
template<class Types>
	class Aes256_cipher
		: protected Types
	{   // AES-256 cipher (blocksize: 128bit; keylen: 256bit)
private:
	typedef Types Mybase;
	typedef typename Mybase::W W;
	typedef typename Mybase::B B;
public:
	typedef typename Mybase::bit32 bit32;
	typedef typename Mybase::bit8 bit8;

	void initialize(const W* k)
		{   // initialize cipher and create round keys (keylen=8)
		//magic number: 4->blocksize in 32bit words
		//              8->keylength in 32bit words
		//             14->number of rounds
		//             60->4*(14+1)
		assert(k);
		MyKeys[0] = k[0];
		MyKeys[1] = k[1];
		MyKeys[2] = k[2];
		MyKeys[3] = k[3];
		MyKeys[4] = k[4];
		MyKeys[5] = k[5];
		MyKeys[6] = k[6];
		MyKeys[7] = k[7];
		for(B i=8; i<60; ++i)
			{
			B imod8 = i&7;
			W tmp = MyKeys[i-1];
			if(imod8==0)
				{
				tmp = (tmp<<8)|(tmp>>24);
				B* p=(B*)(&tmp);
				p[0] = Sbox[p[0]]; p[1] = Sbox[p[1]];
				p[2] = Sbox[p[2]]; p[3] = Sbox[p[3]];
				tmp = *((W*)p);
				tmp ^= Rcon[i/8];
				}
			else if(imod8==4)
				{
				B* p=(B*)(&tmp);
				p[0] = Sbox[p[0]]; p[1] = Sbox[p[1]];
				p[2] = Sbox[p[2]]; p[3] = Sbox[p[3]];
				tmp = *((W*)p);
				}
			MyKeys[i] = MyKeys[i-8] ^ tmp;
			}
		}

	void encrypt_block(B* b)
		{
		assert(b);
		B cpy[4];
		*((W*)b) ^= MyKeys[0];    // add roundkey
		*((W*)(b+4)) ^= MyKeys[1];
		*((W*)(b+8)) ^= MyKeys[2];
		*((W*)(b+12)) ^= MyKeys[3];

		for(B r=1; r<14; ++r)
			{
			b[ 0] = Sbox[b[ 0]]; b[ 1] = Sbox[b[ 1]];   // sub bytes
			b[ 2] = Sbox[b[ 2]]; b[ 3] = Sbox[b[ 3]];
			b[ 4] = Sbox[b[ 4]]; b[ 5] = Sbox[b[ 5]];
			b[ 6] = Sbox[b[ 6]]; b[ 7] = Sbox[b[ 7]];
			b[ 8] = Sbox[b[ 8]]; b[ 9] = Sbox[b[ 9]];
			b[10] = Sbox[b[10]]; b[11] = Sbox[b[11]];
			b[12] = Sbox[b[12]]; b[13] = Sbox[b[13]];
			b[14] = Sbox[b[14]]; b[15] = Sbox[b[15]];

			*((W*)(b+4)) = ((*((W*)(b+4))<< 8)|(*((W*)(b+4))>>24)); // shift rows left
			*((W*)(b+8)) = ((*((W*)(b+8))<<16)|(*((W*)(b+8))>>16));
			*((W*)(b+12)) = ((*((W*)(b+12))<<24)|(*((W*)(b+12))>> 8));

			// mix columns
			cpy[0] = b[ 0];
			cpy[1] = b[ 4];
			cpy[2] = b[ 8];
			cpy[3] = b[12];
			b[ 0] =  T2[cpy[0]] ^ T3[cpy[1]] ^    cpy[2]  ^    cpy[3];
			b[ 4] =     cpy[0]  ^ T2[cpy[1]] ^ T3[cpy[2]] ^    cpy[3];
			b[ 8] =     cpy[0]  ^    cpy[1]  ^ T2[cpy[2]] ^ T3[cpy[3]];
			b[12] =  T3[cpy[0]] ^    cpy[1]  ^    cpy[2]  ^ T2[cpy[3]];
			cpy[0] = b[ 1];
			cpy[1] = b[ 5];
			cpy[2] = b[ 9];
			cpy[3] = b[13];
			b[ 1] =  T2[cpy[0]] ^ T3[cpy[1]] ^    cpy[2]  ^    cpy[3];
			b[ 5] =     cpy[0]  ^ T2[cpy[1]] ^ T3[cpy[2]] ^    cpy[3];
			b[ 9] =     cpy[0]  ^    cpy[1]  ^ T2[cpy[2]] ^ T3[cpy[3]];
			b[13] =  T3[cpy[0]] ^    cpy[1]  ^    cpy[2]  ^ T2[cpy[3]];
			cpy[0] = b[ 2];
			cpy[1] = b[ 6];
			cpy[2] = b[10];
			cpy[3] = b[14];
			b[ 2] =  T2[cpy[0]] ^ T3[cpy[1]] ^    cpy[2]  ^    cpy[3];
			b[ 6] =     cpy[0]  ^ T2[cpy[1]] ^ T3[cpy[2]] ^    cpy[3];
			b[10] =     cpy[0]  ^    cpy[1]  ^ T2[cpy[2]] ^ T3[cpy[3]];
			b[14] =  T3[cpy[0]] ^    cpy[1]  ^    cpy[2]  ^ T2[cpy[3]];
			cpy[0] = b[ 3];
			cpy[1] = b[ 7];
			cpy[2] = b[11];
			cpy[3] = b[15];
			b[ 3] =  T2[cpy[0]] ^ T3[cpy[1]] ^    cpy[2]  ^    cpy[3];
			b[ 7] =     cpy[0]  ^ T2[cpy[1]] ^ T3[cpy[2]] ^    cpy[3];
			b[11] =     cpy[0]  ^    cpy[1]  ^ T2[cpy[2]] ^ T3[cpy[3]];
			b[15] =  T3[cpy[0]] ^    cpy[1]  ^    cpy[2]  ^ T2[cpy[3]];

			*((W*)b) ^= MyKeys[r*4  ];   // add roundkey
			*((W*)(b+4)) ^= MyKeys[r*4+1];
			*((W*)(b+8)) ^= MyKeys[r*4+2];
			*((W*)(b+12)) ^= MyKeys[r*4+3];
			}

		b[ 0] = Sbox[b[ 0]]; b[ 1] = Sbox[b[ 1]];   // sub bytes
		b[ 2] = Sbox[b[ 2]]; b[ 3] = Sbox[b[ 3]];
		b[ 4] = Sbox[b[ 4]]; b[ 5] = Sbox[b[ 5]];
		b[ 6] = Sbox[b[ 6]]; b[ 7] = Sbox[b[ 7]];
		b[ 8] = Sbox[b[ 8]]; b[ 9] = Sbox[b[ 9]];
		b[10] = Sbox[b[10]]; b[11] = Sbox[b[11]];
		b[12] = Sbox[b[12]]; b[13] = Sbox[b[13]];
		b[14] = Sbox[b[14]]; b[15] = Sbox[b[15]];

		*((W*)(b+4)) = ((*((W*)(b+4))<< 8)|(*((W*)(b+4))>>24)); // shift rows left
		*((W*)(b+8)) = ((*((W*)(b+8))<<16)|(*((W*)(b+8))>>16));
		*((W*)(b+12)) = ((*((W*)(b+12))<<24)|(*((W*)(b+12))>> 8));

		*((W*)b) ^= MyKeys[108];   // add roundkey
		*((W*)(b+4)) ^= MyKeys[109];
		*((W*)(b+8)) ^= MyKeys[110];
		*((W*)(b+12)) ^= MyKeys[111];
		}

	void decrypt_block(B* b)
		{
		assert(b);
		B cpy[4];
		*((W*)b) ^= MyKeys[108];   // add roundkey
		*((W*)(b+4)) ^= MyKeys[109];
		*((W*)(b+8)) ^= MyKeys[110];
		*((W*)(b+12)) ^= MyKeys[111];

		for(B r=13; r>0; --r)
			{
			*((W*)(b+4)) = ((*((W*)(b+4))>> 8)|(*((W*)(b+4))<<24));  // shift rows right
			*((W*)(b+8)) = ((*((W*)(b+8))>>16)|(*((W*)(b+8))<<16));
			*((W*)(b+12)) = ((*((W*)(b+12))>>24)|(*((W*)(b+12))<< 8));

			b[ 0] = Rsbox[b[ 0]]; b[ 1] = Rsbox[b[ 1]];  // inverse sub bytes
			b[ 2] = Rsbox[b[ 2]]; b[ 3] = Rsbox[b[ 3]];
			b[ 4] = Rsbox[b[ 4]]; b[ 5] = Rsbox[b[ 5]];
			b[ 6] = Rsbox[b[ 6]]; b[ 7] = Rsbox[b[ 7]];
			b[ 8] = Rsbox[b[ 8]]; b[ 9] = Rsbox[b[ 9]];
			b[10] = Rsbox[b[10]]; b[11] = Rsbox[b[11]];
			b[12] = Rsbox[b[12]]; b[13] = Rsbox[b[13]];
			b[14] = Rsbox[b[14]]; b[15] = Rsbox[b[15]];

			*((W*)b) ^= MyKeys[r*4  ];   // add roundkey
			*((W*)(b+4)) ^= MyKeys[r*4+1];
			*((W*)(b+8)) ^= MyKeys[r*4+2];
			*((W*)(b+12)) ^= MyKeys[r*4+3];

			// inverse mix columns
			cpy[0] = b[ 0];
			cpy[1] = b[ 4];
			cpy[2] = b[ 8];
			cpy[3] = b[12];
			b[ 0] =  T14[cpy[0]] ^ T11[cpy[1]] ^ T13[cpy[2]] ^ T9 [cpy[3]];
			b[ 4] =  T9 [cpy[0]] ^ T14[cpy[1]] ^ T11[cpy[2]] ^ T13[cpy[3]];
			b[ 8] =  T13[cpy[0]] ^ T9 [cpy[1]] ^ T14[cpy[2]] ^ T11[cpy[3]];
			b[12] =  T11[cpy[0]] ^ T13[cpy[1]] ^ T9 [cpy[2]] ^ T14[cpy[3]];
			cpy[0] = b[ 1];
			cpy[1] = b[ 5];
			cpy[2] = b[ 9];
			cpy[3] = b[13];
			b[   1] =  T14[cpy[0]] ^ T11[cpy[1]] ^ T13[cpy[2]] ^ T9 [cpy[3]];
			b[ 4+1] =  T9 [cpy[0]] ^ T14[cpy[1]] ^ T11[cpy[2]] ^ T13[cpy[3]];
			b[ 8+1] =  T13[cpy[0]] ^ T9 [cpy[1]] ^ T14[cpy[2]] ^ T11[cpy[3]];
			b[12+1] =  T11[cpy[0]] ^ T13[cpy[1]] ^ T9 [cpy[2]] ^ T14[cpy[3]];
			cpy[0] = b[ 2];
			cpy[1] = b[ 6];
			cpy[2] = b[10];
			cpy[3] = b[14];
			b[ 2] =  T14[cpy[0]] ^ T11[cpy[1]] ^ T13[cpy[2]] ^ T9 [cpy[3]];
			b[ 6] =  T9 [cpy[0]] ^ T14[cpy[1]] ^ T11[cpy[2]] ^ T13[cpy[3]];
			b[10] =  T13[cpy[0]] ^ T9 [cpy[1]] ^ T14[cpy[2]] ^ T11[cpy[3]];
			b[14] =  T11[cpy[0]] ^ T13[cpy[1]] ^ T9 [cpy[2]] ^ T14[cpy[3]];
			cpy[0] = b[ 3];
			cpy[1] = b[ 7];
			cpy[2] = b[11];
			cpy[3] = b[15];
			b[ 3] =  T14[cpy[0]] ^ T11[cpy[1]] ^ T13[cpy[2]] ^ T9 [cpy[3]];
			b[ 7] =  T9 [cpy[0]] ^ T14[cpy[1]] ^ T11[cpy[2]] ^ T13[cpy[3]];
			b[11] =  T13[cpy[0]] ^ T9 [cpy[1]] ^ T14[cpy[2]] ^ T11[cpy[3]];
			b[15] =  T11[cpy[0]] ^ T13[cpy[1]] ^ T9 [cpy[2]] ^ T14[cpy[3]];
			}

		*((W*)(b+4)) = ((*((W*)(b+4))>> 8)|(*((W*)(b+4))<<24));  // shift rows right
		*((W*)(b+8)) = ((*((W*)(b+8))>>16)|(*((W*)(b+8))<<16));
		*((W*)(b+12)) = ((*((W*)(b+12))>>24)|(*((W*)(b+12))<< 8));

		b[ 0] = Rsbox[b[ 0]]; b[ 1] = Rsbox[b[ 1]];  // inverse sub bytes
		b[ 2] = Rsbox[b[ 2]]; b[ 3] = Rsbox[b[ 3]];
		b[ 4] = Rsbox[b[ 4]]; b[ 5] = Rsbox[b[ 5]];
		b[ 6] = Rsbox[b[ 6]]; b[ 7] = Rsbox[b[ 7]];
		b[ 8] = Rsbox[b[ 8]]; b[ 9] = Rsbox[b[ 9]];
		b[10] = Rsbox[b[10]]; b[11] = Rsbox[b[11]];
		b[12] = Rsbox[b[12]]; b[13] = Rsbox[b[13]];
		b[14] = Rsbox[b[14]]; b[15] = Rsbox[b[15]];

		*((W*)b) ^= MyKeys[0];    // add roundkey
		*((W*)(b+4)) ^= MyKeys[1];
		*((W*)(b+8)) ^= MyKeys[2];
		*((W*)(b+12)) ^= MyKeys[3];
		}

private:
	W MyKeys[112];
	};

	typedef Aes256_cipher<Aes_types> aes256_cipher;

};//end: namespace