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Untiy3D使用PlayerPrefs类实现本地数据加密
PlayerPrefs类本身不进行加密 ，保持数据的时候容易被修改破解。使用多少key值存储太过麻烦，通过集成类可以存储实例对象。下面就来看看使用PlayerPrefs类实现本地数据加密的实现。
using System;
using System.IO;
using System.Security.Cryptography;
using System.Text;
using UnityEngine;
using System.Collections;
public class CryptoPrefs
｛
private static string sKEY = "ZTdkNTNmNDE2NTM3MWM0NDFhNTEzNzU1";
private static string sIV = "4rZymEMfa/PpeJ89qY4gyA==";
public static void SetInt(string key, int val)
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PlayerPrefs.SetString(CryptoPrefs.GetHash(key), CryptoPrefs.Encrypt(val.ToString()));
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public static int GetInt(string key, int defaultValue = 0)
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string @string = CryptoPrefs.GetString(key, defaultValue.ToString());
int result = defaultValue;
int.TryParse(@string, out result);
return result;
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public static void SetFloat(string key, float val)
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PlayerPrefs.SetString(CryptoPrefs.GetHash(key), CryptoPrefs.Encrypt(val.ToString()));
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public static float GetFloat(string key, float defaultValue = 0f)
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string @string = CryptoPrefs.GetString(key, defaultValue.ToString());
float result = defaultValue;
float.TryParse(@string, out result);
return result;
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public static void SetString(string key, string val)
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PlayerPrefs.SetString(CryptoPrefs.GetHash(key), CryptoPrefs.Encrypt(val));
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public static string GetString(string key, string defaultValue = "")
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string text = defaultValue;
string @string = PlayerPrefs.GetString(CryptoPrefs.GetHash(key), defaultValue.ToString());
if (!text.Equals(@string))
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text = CryptoPrefs.Decrypt(@string);
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return text;
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public static bool HasKey(string key)
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string hash = CryptoPrefs.GetHash(key);
return PlayerPrefs.HasKey(hash);
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public static void DeleteKey(string key)
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string hash = CryptoPrefs.GetHash(key);
PlayerPrefs.DeleteKey(hash);
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public static void DeleteAll()
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PlayerPrefs.DeleteAll();
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public static void Save()
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PlayerPrefs.Save();
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private static string Decrypt(string encString)
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RijndaelManaged rijndaelManaged = new RijndaelManaged
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Padding = PaddingMode.Zeros,
Mode = CipherMode.CBC,
KeySize = 128,
BlockSize = 128
｝;
byte[] bytes = Encoding.UTF8.GetBytes(CryptoPrefs.sKEY);
byte[] rgbIV = Convert.FromBase64String(CryptoPrefs.sIV);
ICryptoTransform transform = rijndaelManaged.CreateDecryptor(bytes, rgbIV);
byte[] array = Convert.FromBase64String(encString);
byte[] array2 = new byte[array.Length];
MemoryStream stream = new MemoryStream(array);
CryptoStream cryptoStream = new CryptoStream(stream, transform, CryptoStreamMode.Read);
cryptoStream.Read(array2, 0, array2.Length);
//Debug.Log("Encoding.UTF8.GetString(array2).TrimEnd(new char[1] " + Encoding.UTF8.GetString(array2).TrimEnd(new char[1]));
return Encoding.UTF8.GetString(array2).TrimEnd(new char[1]);
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private static string Encrypt(string rawString)
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RijndaelManaged rijndaelManaged = new RijndaelManaged
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Padding = PaddingMode.Zeros,
Mode = CipherMode.CBC,
KeySize = 128,
BlockSize = 128
｝;
byte[] bytes = Encoding.UTF8.GetBytes(CryptoPrefs.sKEY);
byte[] rgbIV = Convert.FromBase64String(CryptoPrefs.sIV);
ICryptoTransform transform = rijndaelManaged.CreateEncryptor(bytes, rgbIV);
MemoryStream memoryStream = new MemoryStream();
CryptoStream cryptoStream = new CryptoStream(memoryStream, transform, CryptoStreamMode.Write);
byte[] bytes2 = Encoding.UTF8.GetBytes(rawString);
cryptoStream.Write(bytes2, 0, bytes2.Length);
cryptoStream.FlushFinalBlock();
byte[] inArray = memoryStream.ToArray();
return Convert.ToBase64String(inArray);
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private static string GetHash(string key)
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MD5 mD = new MD5CryptoServiceProvider();
byte[] array = mD.ComputeHash(Encoding.UTF8.GetBytes(key));
StringBuilder stringBuilder = new StringBuilder();
for (int i = 0; i < array.Length; i++)
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stringBuilder.Append(array[i].ToString("x2"));
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return stringBuilder.ToString();
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// //默认密钥向量
// private static byte[] Keys = ｛ 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF ｝;
// public static string keyss = "1234567z";
// /// <summary>
// /// DES加密字符串
// /// </summary>
// /// <param name="encryptString">待加密的字符串</param>
// /// <param name="encryptKey">加密密钥,要求为8位</param>
// /// <returns>加密成功返回加密后的字符串，失败返回源串</returns>
// public static string EncryptDES(string encryptString, string encryptKey)
// ｛
// try
// ｛
// byte[] rgbKey = Encoding.UTF8.GetBytes(encryptKey.Substring(0, 8));
// byte[] rgbIV = Keys;
// byte[] inputByteArray = Encoding.UTF8.GetBytes(encryptString);
// DESCryptoServiceProvider dCSP = new DESCryptoServiceProvider();
// MemoryStream mStream = new MemoryStream();
// CryptoStream cStream = new CryptoStream(mStream, dCSP.CreateEncryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
// cStream.Write(inputByteArray, 0, inputByteArray.Length);
// cStream.FlushFinalBlock();
// return Convert.ToBase64String(mStream.ToArray());
// ｝
// catch
// ｛
// return encryptString;
// ｝
// ｝/// <summary>
// /// DES解密字符串
// /// </summary>
// /// <param name="decryptString">待解密的字符串</param>
// /// <param name="decryptKey">解密密钥,要求为8位,和加密密钥相同</param>
// /// <returns>解密成功返回解密后的字符串，失败返源串</returns>
// public static string DecryptDES(string decryptString, string decryptKey)
// ｛
// try
// ｛
// byte[] rgbKey = Encoding.UTF8.GetBytes(decryptKey);
// byte[] rgbIV = Keys;
// byte[] inputByteArray = Convert.FromBase64String(decryptString);
// DESCryptoServiceProvider DCSP = new DESCryptoServiceProvider();
// MemoryStream mStream = new MemoryStream();
// CryptoStream cStream = new CryptoStream(mStream, DCSP.CreateDecryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
// cStream.Write(inputByteArray, 0, inputByteArray.Length);
// cStream.FlushFinalBlock();
// return Encoding.UTF8.GetString(mStream.ToArray());
// ｝
// catch
// ｛
// return decryptString;
// ｝
// ｝
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using UnityEngine;
using System.Collections;
using System;
using System.Reflection;
public static class PlayerPrefsExtend
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public static void Save(string name, object o)
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Type t = o.GetType();
//Debug.LogError (t);
FieldInfo[] fiedls = t.GetFields();
for (int i = 0; i < fiedls.Length; i++)
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string saveName = name + "." + fiedls[i].Name;
switch (fiedls[i].FieldType.Name)
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case "String":
CryptoPrefs.SetString(saveName, fiedls[i].GetValue(o).ToString());
break;
case "Int32":
case "Int64":
case "Int":
case "uInt":
CryptoPrefs.SetInt(saveName, (int)fiedls[i].GetValue(o));
break;
case "Float":
CryptoPrefs.SetFloat(saveName, (float)fiedls[i].GetValue(o));
break;
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｝
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public static T GetValue<T>(string name) where T : new()
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T newObj = new T();
Type t = newObj.GetType();
FieldInfo[] fiedls = t.GetFields();
for (int i = 0; i < fiedls.Length; i++)
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string saveName = name + "." + fiedls[i].Name;
switch (fiedls[i].FieldType.Name)
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case "String":
fiedls[i].SetValue(newObj, CryptoPrefs.GetString(saveName));
break;
case "Int32":
case "Int64":
case "Int":
case "uInt":
fiedls[i].SetValue(newObj, CryptoPrefs.GetInt(saveName));
break;
case "Float":
fiedls[i].SetValue(newObj, CryptoPrefs.GetFloat(saveName));
break;
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return newObj;
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using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class User ｛
public string Name ;
public int Age;
public string Describe ;
public string dse ;
public string text ;
｝
public class Test : MonoBehaviour ｛
// Use this for initialization
void Start () ｛
PlayerPrefs.DeleteAll();
User user = new User();
user.Name = "Name";
user.Age = 20;
user.Describe = "Descripbe ";
user.dse = "text";
user.text = "text";
PlayerPrefsExtend.Save("user", user);
user = null;
User userGet = new User ();
userGet = PlayerPrefsExtend.GetValue<User>("user");
Debug.Log("user name: " + userGet.Name);
Debug.Log("user Age: " + userGet.Age);
Debug.Log("user Describe: " + userGet.Describe);
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// Update is called once per frame
void Update () ｛
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