AES加密解密代码C#

以下是C#实现AES加密解密的代码示例：

1. AES加密代码示例：

using System;
using System.Security.Cryptography;
using System.Text;

public class AesEncryption
{
    public static string Encrypt(string plainText, string key, string iv)
    {
        byte[] keyBytes = Encoding.UTF8.GetBytes(key);
        byte[] ivBytes = Encoding.UTF8.GetBytes(iv);

        using (Aes aes = Aes.Create())
        {
            aes.Key = keyBytes;
            aes.IV = ivBytes;

            ICryptoTransform encryptor = aes.CreateEncryptor(aes.Key, aes.IV);

            using (var ms = new System.IO.MemoryStream())
            {
                using (var cs = new CryptoStream(ms, encryptor, CryptoStreamMode.Write))
                {
                    using (var sw = new System.IO.StreamWriter(cs))
                    {
                        sw.Write(plainText);
                    }
                }

                byte[] encryptedBytes = ms.ToArray();
                return Convert.ToBase64String(encryptedBytes);
            }
        }
    }
}

2. AES解密代码示例：

using System;
using System.Security.Cryptography;
using System.Text;

public class AesDecryption
{
    public static string Decrypt(string cipherText, string key, string iv)
    {
        byte[] keyBytes = Encoding.UTF8.GetBytes(key);
        byte[] ivBytes = Encoding.UTF8.GetBytes(iv);

        using (Aes aes = Aes.Create())
        {
            aes.Key = keyBytes;
            aes.IV = ivBytes;

            ICryptoTransform decryptor = aes.CreateDecryptor(aes.Key, aes.IV);

            using (var ms = new System.IO.MemoryStream(Convert.FromBase64String(cipherText)))
            {
                using (var cs = new CryptoStream(ms, decryptor, CryptoStreamMode.Read))
                {
                    using (var sr = new System.IO.StreamReader(cs))
                    {
                        return sr.ReadToEnd();
                    }
                }
            }
        }
    }
}

使用示例：

string plainText = "Hello, World!";
string key = "1234567812345678"; // Key要16位的
string iv = "@12345678912345!";

string encryptedText = AesEncryption.Encrypt(plainText, key, iv);
string decryptedText = AesDecryption.Decrypt(encryptedText, key, iv);

Console.WriteLine("加密后的密文： " + encryptedText);
Console.WriteLine("解密后的明文： " + decryptedText);