94 lines
2.8 KiB
C#
94 lines
2.8 KiB
C#
using System;
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using System.IO;
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using System.Text;
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using System.Collections;
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using UnityEngine;
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using YooAsset;
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/// <summary>
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/// 文件偏移加密方式
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/// </summary>
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public class TestFileOffsetEncryption : IEncryptionServices
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{
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public EncryptResult Encrypt(EncryptFileInfo fileInfo)
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{
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// 说明：对TestRes3资源目录进行加密
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if (fileInfo.BundleName.Contains("_testres3_"))
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{
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int offset = 32;
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byte[] fileData = File.ReadAllBytes(fileInfo.FileLoadPath);
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var encryptedData = new byte[fileData.Length + offset];
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Buffer.BlockCopy(fileData, 0, encryptedData, offset, fileData.Length);
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EncryptResult result = new EncryptResult();
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result.Encrypted = true;
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result.EncryptedData = encryptedData;
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return result;
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}
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else
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{
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EncryptResult result = new EncryptResult();
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result.Encrypted = false;
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return result;
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}
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}
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}
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/// <summary>
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/// 资源文件偏移解密类
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/// </summary>
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public class TestFileOffsetDecryption : IDecryptionServices
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{
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/// <summary>
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/// 同步方式获取解密的资源包对象
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/// 注意：加载流对象在资源包对象释放的时候会自动释放
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/// </summary>
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DecryptResult IDecryptionServices.LoadAssetBundle(DecryptFileInfo fileInfo)
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{
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DecryptResult decryptResult = new DecryptResult();
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decryptResult.ManagedStream = null;
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decryptResult.Result = AssetBundle.LoadFromFile(fileInfo.FileLoadPath, fileInfo.FileLoadCRC, GetFileOffset());
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return decryptResult;
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}
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/// <summary>
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/// 异步方式获取解密的资源包对象
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/// 注意：加载流对象在资源包对象释放的时候会自动释放
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/// </summary>
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DecryptResult IDecryptionServices.LoadAssetBundleAsync(DecryptFileInfo fileInfo)
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{
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DecryptResult decryptResult = new DecryptResult();
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decryptResult.ManagedStream = null;
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decryptResult.CreateRequest = AssetBundle.LoadFromFileAsync(fileInfo.FileLoadPath, fileInfo.FileLoadCRC, GetFileOffset());
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return decryptResult;
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}
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/// <summary>
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/// 后备方式获取解密的资源包对象
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/// </summary>
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DecryptResult IDecryptionServices.LoadAssetBundleFallback(DecryptFileInfo fileInfo)
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{
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return new DecryptResult();
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}
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/// <summary>
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/// 获取解密的字节数据
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/// </summary>
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byte[] IDecryptionServices.ReadFileData(DecryptFileInfo fileInfo)
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{
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throw new System.NotImplementedException();
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}
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/// <summary>
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/// 获取解密的文本数据
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/// </summary>
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string IDecryptionServices.ReadFileText(DecryptFileInfo fileInfo)
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{
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throw new System.NotImplementedException();
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}
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private static ulong GetFileOffset()
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{
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return 32;
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}
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} |