Bouncy Castle是一个流行的加密库,提供了许多加密算法。在C#中,你可以使用Bouncy Castle来执行各种加密操作。以下是一些常见的加密算法及其在C#中的实现:
对称加密算法:
AES
类来实现AES加密和解密。DES
类来实现DES加密和解密。TripleDES
类来实现3DES加密和解密。非对称加密算法:
RSACryptoServiceProvider
类来实现RSA加密和解密。DSACryptoServiceProvider
类来实现DSA签名和验证。ECCurve
和ECKeyPair
类来实现ECC加密和解密。要在C#中使用Bouncy Castle,首先需要将其添加到项目中。你可以通过NuGet包管理器安装Bouncy Castle库,或者将源代码添加到项目中。安装Bouncy Castle后,你可以在代码中引用相应的命名空间,并使用提供的类来实现加密和解密操作。
以下是一个使用Bouncy Castle实现AES加密和解密的示例:
using System;
using System.Security.Cryptography;
using BouncyCastle.Crypto;
using BouncyCastle.Crypto.Engines;
using BouncyCastle.Crypto.Parameters;
using BouncyCastle.Security;
class AesEncryptionExample
{
static void Main()
{
string plainText = "Hello, Bouncy Castle!";
byte[] keyBytes = Encoding.UTF8.GetBytes("1234567812345678"); // 16 bytes for AES-128
byte[] ivBytes = Encoding.UTF8.GetBytes("abcdefghijklmnop"); // 16 bytes for AES
using (AesEngine engine = new AesEngine())
{
engine.KeySize = KeySize.AES128;
engine.Mode = CipherMode.CBC;
engine.Padding = PaddingMode.PKCS7;
ICryptoTransform encryptor = engine.CreateEncryptor(keyBytes, ivBytes);
byte[] cipherText = Encrypt(plainText, encryptor);
Console.WriteLine("Encrypted text: " + Convert.ToBase64String(cipherText));
ICryptoTransform decryptor = engine.CreateDecryptor(keyBytes, ivBytes);
string decryptedText = Decrypt(cipherText, decryptor);
Console.WriteLine("Decrypted text: " + decryptedText);
}
}
static byte[] Encrypt(string plainText, ICryptoTransform encryptor)
{
byte[] plainBytes = Encoding.UTF8.GetBytes(plainText);
return encryptor.TransformFinalBlock(plainBytes, 0, plainBytes.Length);
}
static string Decrypt(byte[] cipherText, ICryptoTransform decryptor)
{
byte[] decryptedBytes = decryptor.TransformFinalBlock(cipherText, 0, cipherText.Length);
return Encoding.UTF8.GetString(decryptedBytes);
}
}
这个示例展示了如何使用Bouncy Castle的AesEngine
类实现AES加密和解密。你可以根据需要调整密钥和初始化向量(IV)的长度,以及其他加密参数。