C#版PBEWithMD5AndDES加解密.rar

//如需修改 byte[] salt = new byte[] { (byte) 0xA9, (byte) 0x9B, (byte) 0xC8, (byte) 0x32, (byte) 0x56, (byte) 0x35, (byte) 0xE3, (byte) 0x03 }; int md5iterations = 19; int segments = 1; public string Decrypt(string cipherText,String key) { if (string.IsNullOrEmpty(cipherText)) return cipherText; PKCSKeyGenerator crypto = new PKCSKeyGenerator(key, salt, md5iterations, segments); ICryptoTransform cryptoTransform = crypto.Decryptor; byte[] cipherBytes = System.Convert.FromBase64String(cipherText); byte[] clearBytes = cryptoTransform.TransformFinalBlock(cipherBytes, 0, cipherBytes.Length); return Encoding.UTF8.GetString(clearBytes); } public string Encrypt(string cipherText, String key) { if (string.IsNullOrEmpty(cipherText)) return cipherText; PKCSKeyGenerator crypto = new PKCSKeyGenerator(key, salt, md5iterations, segments); ICryptoTransform cryptoTransform = crypto.Encryptor; byte[] cipherBytes =Encoding.UTF8.GetBytes( cipherText); byte[] clearBytes = cryptoTransform.TransformFinalBlock(cipherBytes, 0, cipherBytes.Length); return Convert.ToBase64String(clearBytes); } private void button1_Click(object sender, EventArgs e) { String key = "abcdefghijk"; String enc=Encrypt("120.52903", key); String dec = Decrypt(enc, key); }