diff --git a/Assets/YooAsset/Runtime/AssetSystem/Loader/AssetBundleFileLoader.cs b/Assets/YooAsset/Runtime/AssetSystem/Loader/AssetBundleFileLoader.cs
index da08447..c212eab 100644
--- a/Assets/YooAsset/Runtime/AssetSystem/Loader/AssetBundleFileLoader.cs
+++ b/Assets/YooAsset/Runtime/AssetSystem/Loader/AssetBundleFileLoader.cs
@@ -117,7 +117,11 @@ namespace YooAsset
 					if (AssetSystem.DecryptionServices == null)
 						throw new Exception($"{nameof(AssetBundleFileLoader)} need {nameof(IDecryptionServices)} : {MainBundleInfo.BundleName}");
 
-					ulong offset = AssetSystem.DecryptionServices.GetFileOffset();
+					DecryptionFileInfo fileInfo = new DecryptionFileInfo();
+					fileInfo.BundleName = MainBundleInfo.BundleName;
+					fileInfo.BundleHash = MainBundleInfo.Hash;
+					fileInfo.BundleCRC = MainBundleInfo.CRC;
+					ulong offset = AssetSystem.DecryptionServices.GetFileOffset(fileInfo);
 					if (_isWaitForAsyncComplete)
 						CacheBundle = AssetBundle.LoadFromFile(_fileLoadPath, 0, offset);
 					else
diff --git a/Assets/YooAsset/Runtime/Services/IDecryptionServices.cs b/Assets/YooAsset/Runtime/Services/IDecryptionServices.cs
index 47ff2bd..f037954 100644
--- a/Assets/YooAsset/Runtime/Services/IDecryptionServices.cs
+++ b/Assets/YooAsset/Runtime/Services/IDecryptionServices.cs
@@ -1,11 +1,18 @@
 
 namespace YooAsset
 {
+	public struct DecryptionFileInfo
+	{
+		public string BundleName;
+		public string BundleHash;
+		public string BundleCRC;
+	}
+
 	public interface IDecryptionServices
 	{
 		/// <summary>
 		/// 获取加密文件的数据偏移量
 		/// </summary>
-		ulong GetFileOffset();
+		ulong GetFileOffset(DecryptionFileInfo fileInfo);
 	}
 }
\ No newline at end of file