本文整理汇总了C#中System.Security.Cryptography.ECDiffieHellmanCng类的典型用法代码示例。如果您正苦于以下问题：C# ECDiffieHellmanCng类的具体用法？C# ECDiffieHellmanCng怎么用？C# ECDiffieHellmanCng使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
ECDiffieHellmanCng类属于System.Security.Cryptography命名空间，在下文中一共展示了ECDiffieHellmanCng类的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: Main
//引入命名空间
using System;
using System.IO;
using System.Security.Cryptography;
using System.Text;
class Alice
{
public static byte[] alicePublicKey;
public static void Main(string[] args)
{
using (ECDiffieHellmanCng alice = new ECDiffieHellmanCng())
{
alice.KeyDerivationFunction = ECDiffieHellmanKeyDerivationFunction.Hash;
alice.HashAlgorithm = CngAlgorithm.Sha256;
alicePublicKey = alice.PublicKey.ToByteArray();
Bob bob = new Bob();
CngKey k = CngKey.Import(bob.bobPublicKey, CngKeyBlobFormat.EccPublicBlob);
byte[] aliceKey = alice.DeriveKeyMaterial(CngKey.Import(bob.bobPublicKey, CngKeyBlobFormat.EccPublicBlob));
byte[] encryptedMessage = null;
byte[] iv = null;
Send(aliceKey, "Secret message", out encryptedMessage, out iv);
bob.Receive(encryptedMessage, iv);
}
}
private static void Send(byte[] key, string secretMessage, out byte[] encryptedMessage, out byte[] iv)
{
using (Aes aes = new AesCryptoServiceProvider())
{
aes.Key = key;
iv = aes.IV;
// Encrypt the message
using (MemoryStream ciphertext = new MemoryStream())
using (CryptoStream cs = new CryptoStream(ciphertext, aes.CreateEncryptor(), CryptoStreamMode.Write))
{
byte[] plaintextMessage = Encoding.UTF8.GetBytes(secretMessage);
cs.Write(plaintextMessage, 0, plaintextMessage.Length);
cs.Close();
encryptedMessage = ciphertext.ToArray();
}
}
}
}
public class Bob
{
public byte[] bobPublicKey;
private byte[] bobKey;
public Bob()
{
using (ECDiffieHellmanCng bob = new ECDiffieHellmanCng())
{
bob.KeyDerivationFunction = ECDiffieHellmanKeyDerivationFunction.Hash;
bob.HashAlgorithm = CngAlgorithm.Sha256;
bobPublicKey = bob.PublicKey.ToByteArray();
bobKey = bob.DeriveKeyMaterial(CngKey.Import(Alice.alicePublicKey, CngKeyBlobFormat.EccPublicBlob));
}
}
public void Receive(byte[] encryptedMessage, byte[] iv)
{
using (Aes aes = new AesCryptoServiceProvider())
{
aes.Key = bobKey;
aes.IV = iv;
// Decrypt the message
using (MemoryStream plaintext = new MemoryStream())
{
using (CryptoStream cs = new CryptoStream(plaintext, aes.CreateDecryptor(), CryptoStreamMode.Write))
{
cs.Write(encryptedMessage, 0, encryptedMessage.Length);
cs.Close();
string message = Encoding.UTF8.GetString(plaintext.ToArray());
Console.WriteLine(message);
}
}
}
}
}