AES加解密

最新推荐文章于 2020-10-19 09:03:27 发布

XM肖牧

最新推荐文章于 2020-10-19 09:03:27 发布

阅读量391

点赞数

分类专栏： CSharp 文章标签： AES加解密

本文链接：https://blog.youkuaiyun.com/yye4520/article/details/102487742

版权

CSharp 专栏收录该内容

2 篇文章

订阅专栏

本文介绍了一种在Unity环境中使用AES算法进行字符串加密和解密的方法。通过实例演示了如何生成随机密钥，利用RijndaelManaged类实现加密过程，并将加密后的结果转换为Base64字符串。同时，提供了详细的解密步骤，确保数据可以被正确还原。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

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

public class Test : MonoBehaviour
{
    void Start()
    {
        string key = GetRandomString(32);
        string str = "哦豁，哦豁，哦豁，哦豁哦豁哦豁哦豁哦豁哦豁~";
        string result = AesEncrypt(str, key);
        XMDebug.Log(key);
        XMDebug.Log(result);
        XMDebug.Log(AesDecrypt(result, key));
    }

    /// <summary>
    ///  AES 加密
    /// </summary>
    /// <param name="str">明文（待加密）</param>
    /// <param name="key">密文</param>
    /// <returns></returns>
    public static string AesEncrypt(string str, string key)
    {
        if (string.IsNullOrEmpty(str)) return null;
        byte[] toEncryptArray = Encoding.UTF8.GetBytes(str);

        RijndaelManaged rm = new RijndaelManaged
        {
            Key = Encoding.UTF8.GetBytes(key),
            Mode = CipherMode.ECB,
            Padding = PaddingMode.PKCS7
        };

        ICryptoTransform cTransform = rm.CreateEncryptor();
        byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);

        return Convert.ToBase64String(resultArray, 0, resultArray.Length);
    }

    /// <summary>
    ///  AES 解密
    /// </summary>
    /// <param name="str">明文（待解密）</param>
    /// <param name="key">密文</param>
    /// <returns></returns>
    public static string AesDecrypt(string str, string key)
    {
        if (string.IsNullOrEmpty(str)) return null;
        byte[] toEncryptArray = Convert.FromBase64String(str);

        RijndaelManaged rm = new RijndaelManaged
        {
            Key = Encoding.UTF8.GetBytes(key),
            Mode = CipherMode.ECB,
            Padding = PaddingMode.PKCS7
        };

        ICryptoTransform cTransform = rm.CreateDecryptor();
        byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);

        return Encoding.UTF8.GetString(resultArray);
    }

    /// <summary>
    /// 获取随机字符串
    /// </summary>
    /// <param name="length"></param>
    /// <param name="custom"></param>
    /// <param name="useNum"></param>
    /// <param name="useLow"></param>
    /// <param name="useUpp"></param>
    /// <param name="useSpe"></param>
    /// <returns></returns>
    public static string GetRandomString(int length, string custom = "", bool useNum = true, bool useLow = true, bool useUpp = true, bool useSpe = true)
    {
        byte[] b = new byte[4];
        new RNGCryptoServiceProvider().GetBytes(b);
        System.Random r = new System.Random(BitConverter.ToInt32(b, 0));
        string s = null, str = custom;
        if (useNum == true) { str += "0123456789"; }
        if (useLow == true) { str += "abcdefghijklmnopqrstuvwxyz"; }
        if (useUpp == true) { str += "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; }
        if (useSpe == true) { str += "!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~"; }
        for (int i = 0; i < length; i++)
        {
            s += str.Substring(r.Next(0, str.Length - 1), 1);
        }
        return s;
    }
}