public static int[,] Getdecryption(string str, int[,] key)
{
int[] cipherkey = new int[16];
str = str.ToLower();
char[] ch = str.ToCharArray();
int[,] cipher = new int[str.Length / 32, 16];
int[,] plian = new int[str.Length / 32, 16];
int[] plaintext = new int[16];
StringBuilder s = new StringBuilder(100000);
for (int i = 0; i < str.Length; i++)
{
for (int j = 3; j >= 0; j--)
{
s = s.Append(Decryption.GetNum(ch[i]) >> j & 1);
}
}
for (int i = 0; i < cipher.GetLength(0); i++)
{
for (int j = 0; j < 16; j++)
{
cipher[i, j] = Convert.ToInt32(s.ToString(j * 8 + i * 128, 8), 2);
}
}
EncryptionForm encryForm = new EncryptionForm();
encryForm.Show();
for (int i = 0; i < cipher.GetLength(0); i++)
{
for (int h = 0; h < 16; h++)
{
cipherkey[h] = key[key.GetLength(0) - 1, h];
plaintext[h] = cipher[i, h];
}
encryForm.SetText("密钥：", cipherkey);
plaintext = AddRoundKey(plaintext, cipherkey);
encryForm.SetText("InvAddRoundKey:", plaintext);
encryForm.Set();
for (int j = key.GetLength(0) - 2; j > 0; j--)
{
for (int h = 0; h < 16; h++)
{
cipherkey[h] = key[j, h];
}
for (int h = 0; h < plaintext.Length; h++)
{
plaintext[h] = SubBytes.GetByteSub(plaintext[h]);
}
encryForm.SetText("InvSubBytes:", plaintext);
plaintext = InvShiftRows(plaintext);
encryForm.SetText("InvShiftRows:", plaintext);
plaintext = MixColumn.InvMixColumn(plaintext);
encryForm.SetText("InvMixColumn:", plaintext);
encryForm.SetText("轮密钥：", cipherkey);
plaintext = AddRoundKey(plaintext, cipherkey);
encryForm.SetText("InvAddRoundKey:", plaintext);
encryForm.Set();
}
for (int h = 0; h < 16; h++)
{
cipherkey[h] = key[0, h];
}
for (int h = 0; h < plaintext.Length; h++)
{
plaintext[h] = SubBytes.GetByteSub(plaintext[h]);
}
encryForm.SetText("InvSubBytes:", plaintext);
plaintext = InvShiftRows(plaintext);
encryForm.SetText("InvShiftRows:", plaintext);
encryForm.SetText("轮密钥：", cipherkey);
plaintext = AddRoundKey(plaintext, cipherkey);
encryForm.SetText("InvAddRoundKey:", plaintext);
for (int j = 0; j < 16; j++)
{
plian[i, j] = plaintext[j];
}
}
encryForm.Settext();
return(plian);
}
public static int[,] Getencryption(string str, int[,] key)
{
str = str.ToLower();
StringBuilder strB = new StringBuilder(str);
if (strB.Length % 16 != 0)
{
int len = strB.Length;
for (int i = 0; i < 32 - len % 32; i++)
{
strB = strB.Append(" ");
}
}
byte[] buf = Encoding.Default.GetBytes(strB.ToString());
int[] cipherkey = new int[16];
int[,] plain = new int[buf.Length / 16, 16];
int[,] ciphertext = new int[buf.Length / 16, 16];
int[] plaintext = new int[16];
StringBuilder s = new StringBuilder(100000);
for (int i = 0; i < buf.Length; i++)
{
for (int j = 7; j >= 0; j--)
{
s = s.Append(buf[i] >> j & 1);
}
}
for (int i = 0; i < plain.GetLength(0); i++)
{
for (int j = 0; j < 16; j++)
{
plain[i, j] = Convert.ToInt32(s.ToString(j * 8 + i * 128, 8), 2);
}
}
EncryptionForm encryForm = new EncryptionForm();
encryForm.Show();
for (int i = 0; i < plain.GetLength(0); i++)
{
for (int h = 0; h < 16; h++)
{
cipherkey[h] = key[0, h];
plaintext[h] = plain[i, h];
}
encryForm.SetText("密钥：", cipherkey);
plaintext = AddRoundKey(plaintext, cipherkey);
encryForm.SetText("AddRoundKey:", plaintext);
encryForm.Set();
for (int j = 0; j < key.GetLength(0) - 2; j++)
{
for (int h = 0; h < 16; h++)
{
cipherkey[h] = key[j + 1, h];
}
for (int h = 0; h < plaintext.Length; h++)
{
plaintext[h] = SubBytes.GetSubByte(plaintext[h]);
}
encryForm.SetText("SubBytes:", plaintext);
plaintext = ShiftRows(plaintext);
encryForm.SetText("ShiftRows:", plaintext);
plaintext = MixColumn.GetMixColumn(plaintext);
encryForm.SetText("MixColumn:", plaintext);
encryForm.SetText("轮密钥：", cipherkey);
plaintext = AddRoundKey(plaintext, cipherkey);
encryForm.SetText("AddRoundKey:", plaintext);
encryForm.Set();
}
for (int h = 0; h < 16; h++)
{
cipherkey[h] = key[key.GetLength(0) - 1, h];
}
for (int h = 0; h < plaintext.Length; h++)
{
plaintext[h] = SubBytes.GetSubByte(plaintext[h]);
}
encryForm.SetText("SubBytes:", plaintext);
plaintext = ShiftRows(plaintext);
encryForm.SetText("ShiftRows:", plaintext);
encryForm.SetText("轮密钥：", cipherkey);
plaintext = AddRoundKey(plaintext, cipherkey);
encryForm.SetText("AddRoundKey:", plaintext);
for (int j = 0; j < 16; j++)
{
ciphertext[i, j] = plaintext[j];
}
}
encryForm.Settext();
return(ciphertext);
}
