当我通过单击 button1 多次（超过 10 次）使用椭圆曲线加密消息时，出现以下错误
指数数组的边界之外。
代码如下：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using DiffieHellmanMerkle;
using System.Security.Cryptography;
using System.IO;
namespace TestEllipticCurveDiffieHellman
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
byte[] SecretA = null;
byte[] SecretB = null;
try
{
ECDiffieHellmanMerkle A = new ECDiffieHellmanMerkle(ECDHAlgorithm.ECDH_384);
ECDiffieHellmanMerkle B = new ECDiffieHellmanMerkle(ECDHAlgorithm.ECDH_384);
A.KeyDerivationFunction = ECDHKeyDerivationFunction.HASH;
B.KeyDerivationFunction = ECDHKeyDerivationFunction.HASH;
A.HashAlgorithm = DerivedKeyHashAlgorithm.SHA256_ALGORITHM;
B.HashAlgorithm = DerivedKeyHashAlgorithm.SHA256_ALGORITHM;
SecretA = A.RetrieveSecretKey(B.PublicKey);
SecretB = B.RetrieveSecretKey(A.PublicKey);
}
catch(Exception ex)
{
MessageBox.Show(ex.Message,"Win32 Error Message");
}
//Alice encrypts the message with her secret key
string SecretMessage = plain.Text;// "The owl of Minerva only flies at dusk.";
byte[] SecretMessageByteArray = Encoding.Unicode.GetBytes(SecretMessage);
string IVString = "initialV";
byte[] IVByteArray = Encoding.Unicode.GetBytes(IVString);
RijndaelManaged rijndael = new RijndaelManaged();
ICryptoTransform encryptor = rijndael.CreateEncryptor(SecretA, IVByteArray);
MemoryStream memoryStream = new MemoryStream();
CryptoStream cryptoStream = new CryptoStream(memoryStream, Encryptor,CryptoStreamMode.Write);
cryptoStream.Write(SecretMessageByteArray, 0, SecretMessageByteArray.Length);
cryptoStream.FlushFinalBlock();
byte[] cipherText = memoryStream.ToArray();
memoryStream.Close();
cryptoStream.Close();
Encrypted.Text = Encoding.Unicode.GetString(cipherText);
/* string strcipherTextUni = Encoding.Unicode.GetString(cipherText);
MessageBox.Show("Encrypted Unicode = " + strcipherTextUni.ToString());*/
//Bob decrypts the message with his secret key
ICryptoTransform decryptor = rijndael.CreateDecryptor(SecretB, IVByteArray);
memoryStream = new MemoryStream(cipherText);
cryptoStream = new CryptoStream(memoryStream, decryptor, CryptoStreamMode.Read);
byte[] clearText = new byte[cipherText.Length];
int clearTextByteSize = cryptoStream.Read(clearText, 0, clearText.Length);
memoryStream.Close();
cryptoStream.Close();
this.Decrypted.Text = Encoding.Unicode.GetString(clearText, 0, clearTextByteSize);
}
}
}