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)); }