Bouncycastle在C#中的哈希算法

Bouncy Castle是一个流行的加密库，提供了许多加密算法，包括哈希算法。在C#中，你可以使用Bouncy Castle库来实现各种哈希算法。以下是一些常见的哈希算法及其在Bouncy Castle中的实现：

1. SHA-1：

using System;
using System.Security.Cryptography;
using org.bouncycastle.crypto.digests;
using org.bouncycastle.crypto.hash;
using org.bouncycastle.crypto.Macs;
using org.bouncycastle.crypto.engines;

public class SHA1Example
{
    public static void Main()
    {
        byte[] data = https://www.yisu.com/ask/Encoding.UTF8.GetBytes("Hello, World!");
        IHash digest = new SHA1Digest();
        digest.Update(data, 0, data.Length);
        byte[] hash = new byte[digest.GetDigestSize()];
        digest.DoFinal(hash, 0);

        Console.WriteLine(BitConverter.ToString(hash).Replace("-", ""));
    }
}

2. SHA-256：

using System;
using System.Security.Cryptography;
using org.bouncycastle.crypto.digests;
using org.bouncycastle.crypto.hash;

public class SHA256Example
{
    public static void Main()
    {
        byte[] data = https://www.yisu.com/ask/Encoding.UTF8.GetBytes("Hello, World!");
        IHash digest = new SHA256Digest();
        digest.Update(data, 0, data.Length);
        byte[] hash = new byte[digest.GetDigestSize()];
        digest.DoFinal(hash, 0);

        Console.WriteLine(BitConverter.ToString(hash).Replace("-", ""));
    }
}

3. SHA-384：

using System;
using System.Security.Cryptography;
using org.bouncycastle.crypto.digests;
using org.bouncycastle.crypto.hash;

public class SHA384Example
{
    public static void Main()
    {
        byte[] data = https://www.yisu.com/ask/Encoding.UTF8.GetBytes("Hello, World!");
        IHash digest = new SHA384Digest();
        digest.Update(data, 0, data.Length);
        byte[] hash = new byte[digest.GetDigestSize()];
        digest.DoFinal(hash, 0);

        Console.WriteLine(BitConverter.ToString(hash).Replace("-", ""));
    }
}

4. SHA-512：

using System;
using System.Security.Cryptography;
using org.bouncycastle.crypto.digests;
using org.bouncycastle.crypto.hash;

public class SHA512Example
{
    public static void Main()
    {
        byte[] data = https://www.yisu.com/ask/Encoding.UTF8.GetBytes("Hello, World!");
        IHash digest = new SHA512Digest();
        digest.Update(data, 0, data.Length);
        byte[] hash = new byte[digest.GetDigestSize()];
        digest.DoFinal(hash, 0);

        Console.WriteLine(BitConverter.ToString(hash).Replace("-", ""));
    }
}

注意：在使用Bouncy Castle库之前，请确保已将其添加到项目中。你可以通过NuGet包管理器安装Bouncy Castle库。在.NET Core或.NET 5/6/7项目中，可以使用以下命令安装：

Install-Package BouncyCastle

在.NET Framework项目中，你需要手动将Bouncy Castle库添加到项目中，并引用相应的程序集。