js aes加密 c#解密

// 安装 crypto-js: npm install crypto-js

const CryptoJS = require('crypto-js');

// 密钥和初始向量（IV），应从安全的地方获取
const secretKey = 'YourSecretKey123'; // 16字节（128位）密钥
const iv = CryptoJS.lib.WordArray.random(16); // 16字节随机IV

// 待加密的数据
const data = 'Hello, World!';

// 加密
const encrypted = CryptoJS.AES.encrypt(data, secretKey, { iv: iv });

// 将IV和密文一起编码为Base64字符串以便传输
const encryptedData = iv.toString() + ':' + encrypted.toString();

console.log('Encrypted Data:', encryptedData);

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

class Program
{
    static void Main()
    {
        // 假设这是从JavaScript端接收到的加密数据
        string encryptedData = "YourBase64EncodedEncryptedData"; // 替换为实际接收到的数据

        // 分割IV和密文
        var parts = encryptedData.Split(':');
        byte[] iv = Convert.FromBase64String(parts[0]);
        byte[] cipherText = Convert.FromBase64String(parts[1]);

        // 密钥，应从安全的地方获取
        string secretKey = "YourSecretKey123"; // 与JavaScript端保持一致

        using (Aes aesAlg = Aes.Create())
        {
            aesAlg.Key = Encoding.UTF8.GetBytes(secretKey);
            aesAlg.IV = iv;

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

            using (MemoryStream msDecrypt = new MemoryStream(cipherText))
            {
                using (CryptoStream csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read))
                {
                    using (StreamReader srDecrypt = new StreamReader(csDecrypt))
                    {
                        string plaintext = srDecrypt.ReadToEnd();
                        Console.WriteLine("Decrypted Data: " + plaintext);
                    }
                }
            }
        }
    }
}