unity MD5/AES加密

本文转载自https://hiramtan.wordpress.com

第一部分,MD5加密:

涉及到账号密码加密,以为是规定一个密钥,客户端根据密钥加密后传输给服务器,服务器根据密钥解密后验证密码是否正确,这样的话后端程序完全了解客户的帐号密码是多少.或者是已这种方式实现:客户端加密账号密码后发送给服务端,服务端存储玩家的账号密码的密文,登陆时验证玩家的密文就可以.

最常用的是md5加密,visual中代码如下:

using System.Text;

namespace Md5NamaSpace

{

    public class MyMd5

    {

        /// <summary>

        /// md5加密方法

        /// </summary>

        /// <param name=”tempString”>需要加密的字符串 </param>

        /// <returns></returns>

        public static string StringToMd5(string tempString)

        {

            System.Security.Cryptography. MD5 md5 = System.Security.Cryptography.MD5.Create();

            byte[] bs = Encoding.UTF8.GetBytes(tempString);

            byte[] hs = md5.ComputeHash(bs);

            return System. BitConverter.ToString(hs).Replace( “-“, “”);

        }

    }

}

然后打包成dll,复制到unity的asset文加件下,在unity中引用命名空间,直接调用类中的方法就可以了:

using UnityEngine;

using System.Collections;

using Md5NamaSpace;

using System.Text;

public class test : MonoBehaviour

{

    // Use this for initialization

    void Start()

    {

        string test = MyMd5.StringToMd5(“nihao”);

        Debug.Log(test);

    }

}

debug出来的信息就是nihao的md5加密后的值.

 

第二部分,AES加密:

使用unity中的socket传输游戏中的数据,必定要做加密解密功能,本次采用的是aes加密(des升级版),封装dll然后unity3d中调用使用.如下

usingSystem;

namespaceMyEncryptionNamespace

{

   ///<summary>

   ///aes 加密

   ///</summary>

   publicclassMyEncryption

    {

       ///<summary>

       ///32位密钥

       ///</summary>

       publicstaticstringkey;

       ///<summary>

       ///加密

       ///</summary>

       ///<param name=”toEncrypt”>被加密数据</param>

       ///<returns></returns>

       publicstaticstringEncrypt(stringtoEncrypt)

        {

           Byte[] keyArray =System.Text.UTF8Encoding.UTF8.GetBytes(key);

           Byte[] toEncryptArray =System.Text.UTF8Encoding.UTF8.GetBytes(toEncrypt);

            System.Security.Cryptography.RijndaelManagedaes =newSystem.Security.Cryptography.RijndaelManaged();

            aes.Key = keyArray;

            aes.Mode = System.Security.Cryptography.CipherMode.ECB;

            aes.Padding = System.Security.Cryptography.PaddingMode.PKCS7;

            System.Security.Cryptography.ICryptoTransformcTransform = aes.CreateEncryptor();

           Byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);

           returnConvert.ToBase64String(resultArray, 0, resultArray.Length);

        }

       ///<summary>

       ///加密密码

       ///</summary>

       ///<param name=”toEncrypt”>被加密数据</param>

       ///<returns></returns>

       publicstaticstringEncryptPassword(stringtoEncrypt)

        {

           stringkeyForPassword =“qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq”;

           Byte[] keyArray =System.Text.UTF8Encoding.UTF8.GetBytes(keyForPassword);

           Byte[] toEncryptArray =System.Text.UTF8Encoding.UTF8.GetBytes(toEncrypt);

            System.Security.Cryptography.RijndaelManagedaes =newSystem.Security.Cryptography.RijndaelManaged();

            aes.Key = keyArray;

            aes.Mode = System.Security.Cryptography.CipherMode.ECB;

            aes.Padding = System.Security.Cryptography.PaddingMode.PKCS7;

            System.Security.Cryptography.ICryptoTransformcTransform = aes.CreateEncryptor();

           Byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);

           returnConvert.ToBase64String(resultArray, 0, resultArray.Length);

        }

       ///<summary>

       ///解密

       ///</summary>

       ///<param name=”toDecrypt”>被解密数据</param>

       ///<returns></returns>

       publicstaticstringDecrypt(stringtoDecrypt)

        {

           Byte[] keyArray =System.Text.UTF8Encoding.UTF8.GetBytes(key);

           Byte[] toDecryptArray =Convert.FromBase64String(toDecrypt);

            System.Security.Cryptography.RijndaelManagedaes =newSystem.Security.Cryptography.RijndaelManaged();

            aes.Key = keyArray;

            aes.Mode = System.Security.Cryptography.CipherMode.ECB;

            aes.Padding = System.Security.Cryptography.PaddingMode.PKCS7;

            System.Security.Cryptography.ICryptoTransformcTransform = aes.CreateDecryptor();

           Byte[] resultArray = cTransform.TransformFinalBlock(toDecryptArray, 0, toDecryptArray.Length);

           returnSystem.Text.UTF8Encoding.UTF8.GetString(resultArray);

        }

    }

}

生成dll到untiy中,加密解密正常运行…

然后将加密类型修改为加密byte[]类型,代码如下:

usingSystem;

namespaceHiAES

{

   publicclassMyAES

    {    ///<summary>

       ///32位密钥

       ///</summary>

       publicstaticstringkey;

       ///<summary>

       ///加密

       ///</summary>

       ///<param name=”toEncrypt”>需要被加密的数据</param>

       ///<returns></returns>

       publicstaticbyte[] Encrypt(byte[] toEncrypt)

        {

           Byte[] keyArray =System.Text.UTF8Encoding.UTF8.GetBytes(key);

            System.Security.Cryptography.RijndaelManagedaes =newSystem.Security.Cryptography.RijndaelManaged();

            aes.Key = keyArray;

            aes.Mode = System.Security.Cryptography.CipherMode.ECB;

            aes.Padding = System.Security.Cryptography.PaddingMode.PKCS7;

            System.Security.Cryptography.ICryptoTransformcTransform = aes.CreateEncryptor();

           Byte[] resultArray = cTransform.TransformFinalBlock(toEncrypt, 0, toEncrypt.Length);

           returnresultArray;

        }

       ///<summary>

       ///加密

       ///</summary>

       ///<param name=”toEncrypt”>需要被加密的数据</param>

       ///<returns></returns>

       publicstaticbyte[] EncryptPassword(byte[] toEncrypt)

        {

           stringkeyForPassword =“qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq”;

           Byte[] keyArray =System.Text.UTF8Encoding.UTF8.GetBytes(keyForPassword);

            System.Security.Cryptography.RijndaelManagedaes =newSystem.Security.Cryptography.RijndaelManaged();

            aes.Key = keyArray;

            aes.Mode = System.Security.Cryptography.CipherMode.ECB;

            aes.Padding = System.Security.Cryptography.PaddingMode.PKCS7;

            System.Security.Cryptography.ICryptoTransformcTransform = aes.CreateEncryptor();

           Byte[] resultArray = cTransform.TransformFinalBlock(toEncrypt, 0, toEncrypt.Length);

           returnresultArray;

        }

       ///<summary>

       ///解密

       ///</summary>

       ///<param name=”toDecrypt”>需要被解密的数据</param>

       ///<returns></returns>

       publicstaticbyte[] Decrypt(byte[] toDecrypt)

        {

           Byte[] keyArray =System.Text.UTF8Encoding.UTF8.GetBytes(key);

            System.Security.Cryptography.RijndaelManagedaes =newSystem.Security.Cryptography.RijndaelManaged();

            aes.Key = keyArray;

            aes.Mode = System.Security.Cryptography.CipherMode.ECB;

            aes.Padding = System.Security.Cryptography.PaddingMode.PKCS7;

            System.Security.Cryptography.ICryptoTransformcTransform = aes.CreateDecryptor();

           Byte[] resultArray = cTransform.TransformFinalBlock(toDecrypt, 0, toDecrypt.Length);

           returnresultArray;

        }

    }

}

在unity3d中添加命名空间myaesencryption调用如下:

    voidStart()

    {

       MyEncryption.key =“00000000000000000000000000ww00qq”;

       stringtemp =“i am client”;

       byte[] data =System.Text.Encoding.UTF8.GetBytes(temp);

       byte[] tempdata =MyEncryption.Encrypt(data);//加密

       byte[] tempdata2 =MyEncryption.Decrypt(tempdata);//解密

       Debug.Log(System.Text.Encoding.UTF8.GetString(tempdata2));

    }

加密解密过程运算正常…

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