private static byte[] SubBytes(byte[] bytes)
{
byte[] result = new byte[bytes.Length];
for (int x = 0; x < bytes.Length; x++)
{
result[x] = SBOX.Convert(bytes[x]);
}
byte[] _1 = { result[0], result[1], result[2], result[3] };
byte[] _2 = { result[4], result[5], result[6], result[7] };
byte[] _3 = { result[8], result[9], result[10], result[11] };
byte[] _4 = { result[12], result[13], result[14], result[15] };
Logger.WriteLine("====SubBytes====");
Logger.WriteLine(BitConverter.ToString(_1).Replace("-", " "));
Logger.WriteLine(BitConverter.ToString(_2).Replace("-", " "));
Logger.WriteLine(BitConverter.ToString(_3).Replace("-", " "));
Logger.WriteLine(BitConverter.ToString(_4).Replace("-", " "));
Logger.WriteLine("================");
return(result);
}
private static void KeySchedule(byte[] bytes, int currentRound)
{
byte[,] bytes2d = Bytes16To2DBytes4(bytes);
byte[,] round_key = new byte[4, 4];
byte[] r = new byte[16];
byte[] r_ = new byte[16];
//Rot Word
//一旦値を格納
r[3] = CURRENT_CHIPHER_KEY[3]; //09
r[7] = CURRENT_CHIPHER_KEY[7]; //cf
r[11] = CURRENT_CHIPHER_KEY[11]; //4f
r[15] = CURRENT_CHIPHER_KEY[15]; //3c
//Logger.WriteLine("一番左の行(S-BOX変換前): " + BitConverter.ToString(r), Color.CadetBlue);
//↓ 一番下を一番上に持ってくる
r_[3] = CURRENT_CHIPHER_KEY[7]; //cf
r_[7] = CURRENT_CHIPHER_KEY[11]; //4f
r_[11] = CURRENT_CHIPHER_KEY[15]; //3c
r_[15] = CURRENT_CHIPHER_KEY[3]; //09
//↓ s-box変換
r_[3] = SBOX.Convert(r_[3]); //8a
r_[7] = SBOX.Convert(r_[7]); //84
r_[11] = SBOX.Convert(r_[11]); //eb
r_[15] = SBOX.Convert(r_[15]); //01
//Logger.WriteLine("一番左の行(S-BOX変換後): " + BitConverter.ToString(r_), Color.Orange);
r[0] = CURRENT_CHIPHER_KEY[0];
r[4] = CURRENT_CHIPHER_KEY[4];
r[8] = CURRENT_CHIPHER_KEY[8];
r[12] = CURRENT_CHIPHER_KEY[12];
round_key[0, 0] = (byte)(CURRENT_CHIPHER_KEY[0] ^ r_[3] ^ RCON[currentRound]);
round_key[1, 0] = (byte)(CURRENT_CHIPHER_KEY[4] ^ r_[7] ^ RCON[0]);
round_key[2, 0] = (byte)(CURRENT_CHIPHER_KEY[8] ^ r_[11] ^ RCON[0]);
round_key[3, 0] = (byte)(CURRENT_CHIPHER_KEY[12] ^ r_[15] ^ RCON[0]);
byte[] aaa = new byte[4];
aaa[0] = (byte)int.Parse(round_key[0, 0].ToString());
aaa[1] = (byte)int.Parse(round_key[1, 0].ToString());
aaa[2] = (byte)int.Parse(round_key[2, 0].ToString());
aaa[3] = (byte)int.Parse(round_key[3, 0].ToString());
//Logger.WriteLine(BitConverter.ToString(aaa), Color.CadetBlue);
for (int x = 0; x <= 3; x++) //0,1,2 (3)
{
//0は除きたい（横インデックス1から埋め込んでいく）ので x は 1 2 3 のみに絞る
if (x == 0)
{
continue;
}
round_key[0, x] = (byte)(CURRENT_CHIPHER_KEY[0 + (1 * x)] ^ round_key[0, x - 1]);
round_key[1, x] = (byte)(CURRENT_CHIPHER_KEY[4 + (1 * x)] ^ round_key[1, x - 1]);
round_key[2, x] = (byte)(CURRENT_CHIPHER_KEY[8 + (1 * x)] ^ round_key[2, x - 1]);
round_key[3, x] = (byte)(CURRENT_CHIPHER_KEY[12 + (1 * x)] ^ round_key[3, x - 1]);
}
CURRENT_CHIPHER_KEY = Bytes2D4ToBytes16(round_key);
//Logger.WriteLine("ROUND_KEY: " + BitConverter.ToString(Bytes2D4ToBytes16(round_key)), Color.Yellow);
byte[] _1 = { CURRENT_CHIPHER_KEY[0], CURRENT_CHIPHER_KEY[1], CURRENT_CHIPHER_KEY[2], CURRENT_CHIPHER_KEY[3] };
byte[] _2 = { CURRENT_CHIPHER_KEY[4], CURRENT_CHIPHER_KEY[5], CURRENT_CHIPHER_KEY[6], CURRENT_CHIPHER_KEY[7] };
byte[] _3 = { CURRENT_CHIPHER_KEY[8], CURRENT_CHIPHER_KEY[9], CURRENT_CHIPHER_KEY[10], CURRENT_CHIPHER_KEY[11] };
byte[] _4 = { CURRENT_CHIPHER_KEY[12], CURRENT_CHIPHER_KEY[13], CURRENT_CHIPHER_KEY[14], CURRENT_CHIPHER_KEY[15] };
//Logger.WriteLine("ROUND_KEY: " + BitConverter.ToString(CURRENT_CHIPHER_KEY), Color.DeepSkyBlue);
Logger.WriteLine("----ROUND KEY----", Color.Red);
Logger.WriteLine(BitConverter.ToString(_1).Replace("-", " "), Color.Red);
Logger.WriteLine(BitConverter.ToString(_2).Replace("-", " "), Color.Red);
Logger.WriteLine(BitConverter.ToString(_3).Replace("-", " "), Color.Red);
Logger.WriteLine(BitConverter.ToString(_4).Replace("-", " "), Color.Red);
Logger.WriteLine("-----------------", Color.Red);
}