RSA非对称加密解密的问题，不能获得明文！！！！

Question

我用大数算法解密后得不到明文，请教大虾们！！！！环境：VS2010，NET4.0
引用：using System.Security.Cryptography;
      using System.Numerics;
 public partial class FormRsaEncrypt : Form
    {
        public FormRsaEncrypt()
        {
            InitializeComponent();
            this.Text = "RSA 加密解密";            textBoxEncrypt.ReadOnly = true;
            textBoxDecrypt.ReadOnly = true;            RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();
            this.txbPrivateKey.Text = RSA.ToXmlString(true);
            this.txbPublicKey.Text = RSA.ToXmlString(false);
            RSA.Clear();
        }        private void buttonOK_Click(object sender, EventArgs e)
        {
            //int TextLength = 128;
            byte[] encryptedData;
            byte[] decryptedData;            try
            {
                RSACryptoServiceProvider RSA1 = new RSACryptoServiceProvider();
                RSA1.FromXmlString(this.txbPrivateKey.Text);
                RSAParameters RSAKeyInfo = RSA1.ExportParameters(true);                //byte[] dataToEncrypt = GenerateBytes(TextLength);
                byte[] dataToEncrypt = Encoding.UTF8.GetBytes(this.textBoxInput.Text);                encryptedData = RSAEncrypt(dataToEncrypt, RSAKeyInfo.Exponent, RSAKeyInfo.Modulus);
                int x = encryptedData.Length;
                this.textBoxEncrypt.Text = Convert.ToBase64String(encryptedData);                decryptedData = RSADecrypt(encryptedData, RSAKeyInfo.D, RSAKeyInfo.Modulus);
                int y = decryptedData.Length;
                this.textBoxDecrypt.Text = Convert.ToBase64String(decryptedData);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }        //***********************************************************************
        // RSA Encrypt
        //***********************************************************************
        static public byte[] RSAEncrypt(byte[] dataToEncrypt, byte[] Exponent, byte[] Modulus)
        {
            BigInteger original = new BigInteger(dataToEncrypt);
            BigInteger e = new BigInteger(Exponent);
            BigInteger n = new BigInteger(Modulus);            BigInteger encrypted = BigInteger.ModPow(original, e, n);
            return encrypted.ToByteArray();
        }        //***********************************************************************
        // RSA Decrypt
        //***********************************************************************
        static public byte[] RSADecrypt(byte[] encryptedData, byte[] D, byte[] Modulus)
        {
            BigInteger encrypted = new BigInteger(encryptedData);
            BigInteger d = new BigInteger(D);
            BigInteger n = new BigInteger(Modulus);            BigInteger decrypted = BigInteger.ModPow(encrypted, d, n);            return decrypted.ToByteArray();
        }
    }

Answer 1

msdn上不是有现成了的么？为什么还要自己写大数算法？
//Pass the data to ENCRYPT, the public key information 
                //(using RSACryptoServiceProvider.ExportParameters(false),
                //and a boolean flag specifying no OAEP padding.
                encryptedData = RSAEncrypt(dataToEncrypt, RSA.ExportParameters(false), false);                //Pass the data to DECRYPT, the private key information 
                //(using RSACryptoServiceProvider.ExportParameters(true),
                //and a boolean flag specifying no OAEP padding.
                decryptedData = RSADecrypt(encryptedData, RSA.ExportParameters(true), false);