C# 加密到 PHP 解密

使用C#进行加密，然后在PHP中进行解密是一种常见的数据安全处理方式。C#作为一种强大的编程语言，提供了丰富的加密算法库，而PHP则具备良好的跨平台性和易用性，因此这种组合非常适用于在不同平台之间传输敏感数据。下面将介绍如何使用C#进行加密，并在PHP中进行解密的具体步骤。

csharp
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);
        byte[] encrypted;
        using (Aes aes = Aes.Create())
        {
            aes.Key = keyBytes;
            aes.IV = ivBytes;
            ICryptoTransform encryptor = aes.CreateEncryptor(aes.Key, aes.IV);
            using (MemoryStream ms = new MemoryStream())
            {
                using (CryptoStream cs = new CryptoStream(ms, encryptor, CryptoStreamMode.Write))
                {
                    using (StreamWriter sw = new StreamWriter(cs))
                    {
                        sw.Write(plainText);
                    }
                    encrypted = ms.ToArray();
                }
            }
        }
        return Convert.ToBase64String(encrypted);
    }
}

php
function decrypt($encryptedText, $key, $iv) {
    $encryptedText = base64_decode($encryptedText);
    $decrypted = openssl_decrypt(
        $encryptedText,
        'aes-128-cbc',
        $key,
        OPENSSL_RAW_DATA,
        $iv
    );
    return $decrypted;
}