public static string SimpleDecrypt(string enc)
{
byte[] t = Base64.Decode(Encoding.ASCII.GetBytes(enc));
byte[] key = Encoding.ASCII.GetBytes("- BOBO VIERI 32-");
Rijndael rijndael = new Rijndael();
rijndael.InitializeKey(key);
byte[] d = new byte[t.Length];
rijndael.decryptCBC(t, 0, t.Length, d, 0);
return(Encoding.ASCII.GetString(d)); //パディングがあってもNULL文字になるので除去されるはず
}
public RijindaelCipher2(byte[] key, byte[] iv, CipherAlgorithm algorithm)
{
_rijindael = new Rijndael();
_rijindael.SetIV(iv);
_rijindael.InitializeKey(key);
if (algorithm == CipherAlgorithm.AES256CTR ||
algorithm == CipherAlgorithm.AES192CTR ||
algorithm == CipherAlgorithm.AES128CTR)
{
isCTR = true;
}
else
{
isCTR = false;
}
}
public static string SimpleEncrypt(string plain)
{
byte[] t = Encoding.ASCII.GetBytes(plain);
if ((t.Length % 16) != 0)
{
byte[] t2 = new byte[t.Length + (16 - (t.Length % 16))];
Array.Copy(t, 0, t2, 0, t.Length);
for (int i = t.Length + 1; i < t2.Length; i++) //残りはダミー
{
t2[i] = t[i % t.Length];
}
t = t2;
}
byte[] key = Encoding.ASCII.GetBytes("- BOBO VIERI 32-");
Rijndael rijndael = new Rijndael();
rijndael.InitializeKey(key);
byte[] e = new byte[t.Length];
rijndael.encryptCBC(t, 0, t.Length, e, 0);
return(Encoding.ASCII.GetString(Base64.Encode(e)));
}
public RijindaelCipher2(byte[] key, byte[] iv)
{
_rijindael = new Rijndael();
_rijindael.SetIV(iv);
_rijindael.InitializeKey(key);
}
public RijindaelCipher2(byte[] key, byte[] iv) {
_rijindael = new Rijndael();
_rijindael.SetIV(iv);
_rijindael.InitializeKey(key);
}
public RijindaelCipher2(byte[] key, byte[] iv, CipherAlgorithm algorithm) {
_rijindael = new Rijndael();
_rijindael.SetIV(iv);
_rijindael.InitializeKey(key);
if (algorithm == CipherAlgorithm.AES256CTR ||
algorithm == CipherAlgorithm.AES192CTR ||
algorithm == CipherAlgorithm.AES128CTR)
isCTR = true;
else
isCTR = false;
}