[英]Unity C# Encryption Error
我在Unity中编写了一个实际的游戏,我想用此代码保护GameData。
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System.Runtime.Serialization.Formatters.Binary;
using System.IO;
using System;
using System.Text;
using System.Security.Cryptography;
using System.Linq;
public class Data : MonoBehaviour {
static readonly string PasswordHash = "P@@Sw0rd";
static readonly string SaltKey = "S@LT&KEY";
static readonly string VIKey = "@1B2c3D4e5F6g7H8";
public GameObject dirtBlock;
public void Save(){
BinaryFormatter bf = new BinaryFormatter();
FileStream file = File.Open(Application.persistentDataPath + "/playerData.dat",FileMode.Open);
PlayerData data = new PlayerData();
data.dirtCount = dirtBlock.GetComponent<BlockHandler>().blockCount;
data.stoneCount = 0;
data.ironCount = 0;
bf.Serialize(file,Encrypt(ToByteArray(data)));
file.Close();
}
public void Load(){
if(File.Exists(Application.persistentDataPath + "/playerData.dat")){
BinaryFormatter bf = new BinaryFormatter();
FileStream file = File.Open(Application.persistentDataPath + "/playerData.dat",FileMode.Open);
PlayerData data = FromByteArray<PlayerData>(Decrypt(bf.Deserialize(file).ToString()));
file.Close();
dirtBlock.GetComponent<BlockHandler>().blockCount = data.dirtCount;
} else {
FileStream file = File.Create(Application.persistentDataPath + "/playerData.dat");
file.Close();
this.Save();
this.Load();
}
}
public static string Encrypt(byte[] plainTextBytes){
byte[] keyBytes = new Rfc2898DeriveBytes(PasswordHash, Encoding.ASCII.GetBytes(SaltKey)).GetBytes(256 / 8);
var symmetricKey = new RijndaelManaged() { Mode = CipherMode.CBC, Padding = PaddingMode.Zeros };
var encryptor = symmetricKey.CreateEncryptor(keyBytes, Encoding.ASCII.GetBytes(VIKey));
byte[] cipherTextBytes;
using (var memoryStream = new MemoryStream()){
using (var cryptoStream = new CryptoStream(memoryStream, encryptor, CryptoStreamMode.Write)){
cryptoStream.Write(plainTextBytes, 0, plainTextBytes.Length);
cryptoStream.FlushFinalBlock();
cipherTextBytes = memoryStream.ToArray();
cryptoStream.Close();
}
memoryStream.Close();
}
return Convert.ToBase64String(cipherTextBytes);
}
public static byte[] Decrypt(string encryptedText){
byte[] cipherTextBytes = Convert.FromBase64String(encryptedText);
byte[] keyBytes = new Rfc2898DeriveBytes(PasswordHash, Encoding.ASCII.GetBytes(SaltKey)).GetBytes(256 / 8);
var symmetricKey = new RijndaelManaged() { Mode = CipherMode.CBC, Padding = PaddingMode.None };
var decryptor = symmetricKey.CreateDecryptor(keyBytes, Encoding.ASCII.GetBytes(VIKey));
var memoryStream = new MemoryStream(cipherTextBytes);
var cryptoStream = new CryptoStream(memoryStream, decryptor, CryptoStreamMode.Read);
byte[] plainTextBytes = new byte[cipherTextBytes.Length];
memoryStream.Close();
cryptoStream.Close();
return plainTextBytes;
}
public byte[] ToByteArray<T>(T obj){
if(obj == null){
return null;
}
BinaryFormatter bf = new BinaryFormatter();
using(MemoryStream ms = new MemoryStream()){
bf.Serialize(ms, obj);
return ms.ToArray();
}
}
public T FromByteArray<T>(byte[] data){
if(data == null){
return default(T);
}
BinaryFormatter bf = new BinaryFormatter();
using(MemoryStream ms = new MemoryStream(data)){
object obj = bf.Deserialize(ms);
return (T)obj;
}
}
}
[System.Serializable]
public class PlayerData {
public float dirtCount;
public float stoneCount;
public float ironCount;
}
昨天工作正常,但今天我不知道为什么,我收到此错误消息
SerializationException:意外的二进制元素:0 System.Runtime.Serialization.Formatters.Binary.ObjectReader.ReadObject(BinaryElement元素,System.IO.BinaryReader读取器,System.Int64&objectId,System.Object&值,System.Runtime.Serialization.SerializationInfo&info) (位于/Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Runtime.Serialization.Formatters.Binary/ObjectReader.cs:254)System.Runtime.Serialization.Formatters.Binary.ObjectReader.ReadNextObject(BinaryElement元素,System.IO.BinaryReader读取器)(位于/Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Runtime.Serialization.Formatters.Binary/ObjectReader.cs:130)System.Runtime.Serialization。 Formatters.Binary.ObjectReader.ReadObjectGraph(BinaryElement元素,System.IO.BinaryReader阅读器,布尔型readHeaders,System.Object&结果,System.Runtime.Remoting.Messaging.Header []&标头)(位于/ Users / builduser / buildslave / mono /build/mcs/class/corlib/System.Runtime.Serialization.Formatters.Binary/Obj ectReader.cs:104)System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.NoCheckDeserialize(System.IO.Stream serializationStream,System.Runtime.Remoting.Messaging.HeaderHandler处理程序)(在/ Users / builduser / buildslave / monoslav / build /mcs/class/corlib/System.Runtime.Serialization.Formatters.Binary/BinaryFormatter.cs:179)System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize(System.IO.Stream serializationStream)(在/ Users / builduser中) /buildslave/mono/build/mcs/class/corlib/System.Runtime.Serialization.Formatters.Binary/BinaryFormatter.cs:136)Data.FromByteArray [PlayerData](System.Byte []数据)(在Assets / Scripts / Player中) /Data.cs:119)Data.Load()(位于Assets / Scripts / Player / Data.cs:40)
我搜索了4小时的网络搜索,但找不到该问题的解决方案。 我希望有人能帮助我。
在对您的代码进行一些测试之后,我最终使用了这两种方法。
我认为您代码的主要问题是Decrypt
,它从未使用plainTextBytes
做任何事情。
private static string Encrypt(byte[] plainTextBytes)
{
byte[] keyBytes = new Rfc2898DeriveBytes(PasswordHash, Encoding.ASCII.GetBytes(SaltKey)).GetBytes(256 / 8);
var symmetricKey = new RijndaelManaged() { Mode = CipherMode.CBC, Padding = PaddingMode.Zeros };
var encryptor = symmetricKey.CreateEncryptor(keyBytes, Encoding.ASCII.GetBytes(VIKey));
byte[] cipherTextBytes;
using (var memoryStream = new MemoryStream())
{
using (var cryptoStream = new CryptoStream(memoryStream, encryptor, CryptoStreamMode.Write))
{
cryptoStream.Write(plainTextBytes, 0, plainTextBytes.Length);
cryptoStream.FlushFinalBlock();
cipherTextBytes = memoryStream.ToArray();
}
}
return Convert.ToBase64String(cipherTextBytes);
}
解码
public static byte[] Decrypt(string base64)
{
byte[] cipherTextBytes = Convert.FromBase64String(base64);
byte[] keyBytes = new Rfc2898DeriveBytes(PasswordHash, Encoding.ASCII.GetBytes(SaltKey)).GetBytes(256 / 8);
var symmetricKey = new RijndaelManaged() { Mode = CipherMode.CBC, Padding = PaddingMode.None };
var decryptor = symmetricKey.CreateDecryptor(keyBytes, Encoding.ASCII.GetBytes(VIKey));
using (var memoryStream = new MemoryStream(cipherTextBytes))
{
using (var cryptoStream = new CryptoStream(memoryStream, decryptor, CryptoStreamMode.Read))
{
using (BinaryReader srDecrypt = new BinaryReader(cryptoStream))
{
return srDecrypt.ReadBytes(cipherTextBytes.Length);
}
}
}
}
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