diff --git a/entry/src/main/ets/common/CustomEngineKeyImpl.ets b/entry/src/main/ets/common/CustomEngineKeyImpl.ets
index 887e678..6bbb9a1 100644
--- a/entry/src/main/ets/common/CustomEngineKeyImpl.ets
+++ b/entry/src/main/ets/common/CustomEngineKeyImpl.ets
@@ -12,12 +12,12 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-import { EngineKeyInterface, ObjectKey } from '@ohos/imageknife';
 import util from '@ohos.util';
+import { IEngineKey, ObjectKey } from '@ohos/imageknife';
 import { SparkMD5 } from '@ohos/imageknife/src/main/ets/3rd_party/sparkmd5/spark-md5';
 
 //全局自定义key demo
-export class CustomEngineKeyImpl implements EngineKeyInterface {
+export class CustomEngineKeyImpl implements IEngineKey {
   private keyCache: util.LRUCache<string,string> = new util.LRUCache(1024)
 
   // 生成内存缓存
diff --git a/library/index.ets b/library/index.ets
index afc1896..255f3d7 100644
--- a/library/index.ets
+++ b/library/index.ets
@@ -10,7 +10,10 @@ export { FileUtils } from './src/main/ets/utils/FileUtils'
 
 export { LogUtil } from './src/main/ets/utils/LogUtil'
 
-export { EngineKeyInterface } from './src/main/ets/key/EngineKeyInterface'
+export { IEngineKey } from './src/main/ets/key/IEngineKey'
 
 export { ObjectKey } from './src/main/ets/model/ObjectKey'
 
+
+
+
diff --git a/library/src/main/ets/ImageKnife.ets b/library/src/main/ets/ImageKnife.ets
index 2c4498b..3d35f83 100644
--- a/library/src/main/ets/ImageKnife.ets
+++ b/library/src/main/ets/ImageKnife.ets
@@ -18,7 +18,7 @@ import { MemoryLruCache } from './utils/MemoryLruCache';
 import { IMemoryCache } from './utils/IMemoryCache'
 import { FileCache } from './utils/FileCache';
 import { ImageKnifeDispatcher } from './ImageKnifeDispatcher';
-import { EngineKeyInterface } from './key/EngineKeyInterface';
+import { IEngineKey } from './key/IEngineKey';
 
 
 export class ImageKnife {
@@ -122,7 +122,7 @@ export class ImageKnife {
     this.dispatcher.setMaxRequests(concurrency)
   }
 
-  setEngineKeyImpl(impl: EngineKeyInterface): void {
+  setEngineKeyImpl(impl: IEngineKey): void {
     this.dispatcher.setEngineKeyImpl(impl);
   }
 
diff --git a/library/src/main/ets/ImageKnifeDispatcher.ets b/library/src/main/ets/ImageKnifeDispatcher.ets
index 163c056..1287ad6 100644
--- a/library/src/main/ets/ImageKnifeDispatcher.ets
+++ b/library/src/main/ets/ImageKnifeDispatcher.ets
@@ -31,9 +31,8 @@ import { Constants } from './utils/Constants';
 import taskpool from '@ohos.taskpool';
 import { FileTypeUtil } from './utils/FileTypeUtil';
 import util from '@ohos.util';
-import { SparkMD5 } from './3rd_party/sparkmd5/spark-md5';
-import { EngineKeyInterface } from './key/EngineKeyInterface';
-import { EngineKeyFactories } from './key/EngineKeyFactories';
+import { IEngineKey } from './key/IEngineKey';
+import { DefaultEngineKey } from './key/DefaultEngineKey';
 
 export class ImageKnifeDispatcher {
   // 最大并发
@@ -43,7 +42,7 @@ export class ImageKnifeDispatcher {
   // 执行中的请求
   executingJobMap: LightWeightMap<string, List<ImageKnifeRequestWithSource>> = new LightWeightMap();
   // 开发者可配置全局缓存
-  private engineKeyImpl: EngineKeyInterface = new EngineKeyFactories();
+  private engineKeyImpl: IEngineKey = new DefaultEngineKey();
 
   showFromMemomry(request: ImageKnifeRequest, imageSrc: string | PixelMap | Resource, requestSource: ImageKnifeRequestSource): boolean {
     let memoryCache: ImageKnifeData | undefined = ImageKnife.getInstance()
@@ -204,7 +203,7 @@ export class ImageKnifeDispatcher {
     }
   }
 
-  setEngineKeyImpl(impl: EngineKeyInterface): void {
+  setEngineKeyImpl(impl: IEngineKey): void {
     this.engineKeyImpl = impl;
   }
 }
diff --git a/library/src/main/ets/key/EngineKeyFactories.ets b/library/src/main/ets/key/DefaultEngineKey.ets
similarity index 92%
rename from library/src/main/ets/key/EngineKeyFactories.ets
rename to library/src/main/ets/key/DefaultEngineKey.ets
index 078f574..6c66985 100644
--- a/library/src/main/ets/key/EngineKeyFactories.ets
+++ b/library/src/main/ets/key/DefaultEngineKey.ets
@@ -15,9 +15,9 @@
 import util from '@ohos.util';
 import { SparkMD5 } from '../3rd_party/sparkmd5/spark-md5';
 import { ObjectKey } from '../model/ObjectKey';
-import { EngineKeyInterface } from './EngineKeyInterface';
+import { IEngineKey } from './IEngineKey';
 
-export class EngineKeyFactories implements EngineKeyInterface {
+export class DefaultEngineKey implements IEngineKey {
 
   private keyCache: util.LRUCache<string,string> = new util.LRUCache(1024)
 
diff --git a/library/src/main/ets/key/EngineKeyInterface.ets b/library/src/main/ets/key/IEngineKey.ets
similarity index 95%
rename from library/src/main/ets/key/EngineKeyInterface.ets
rename to library/src/main/ets/key/IEngineKey.ets
index 1e127ed..d832d79 100644
--- a/library/src/main/ets/key/EngineKeyInterface.ets
+++ b/library/src/main/ets/key/IEngineKey.ets
@@ -14,7 +14,7 @@
  */
 import { ObjectKey } from '../model/ObjectKey'
 
-export interface EngineKeyInterface {
+export interface IEngineKey {
   // 生成缓存key
   generateCacheKey(loadSrc: string | PixelMap | Resource, signature?: ObjectKey | undefined): string
 }
diff --git a/library/src/main/ets/utils/FileCache.ets b/library/src/main/ets/utils/FileCache.ets
index 4260966..eaf357e 100644
--- a/library/src/main/ets/utils/FileCache.ets
+++ b/library/src/main/ets/utils/FileCache.ets
@@ -243,9 +243,8 @@ export class FileCache {
    */
   static saveFileCacheOnlyFile(context: Context, key: string, value: ArrayBuffer): boolean {
     // 写文件
-    let md5Key = SparkMD5.hashBinary(key)
     FileUtils.getInstance()
-      .writeFileSync(context.cacheDir + FileUtils.SEPARATOR + FileCache.CACHE_FOLDER + FileUtils.SEPARATOR + md5Key, value)
+      .writeFileSync(context.cacheDir + FileUtils.SEPARATOR + FileCache.CACHE_FOLDER + FileUtils.SEPARATOR + key, value)
     return true
   }
 
@@ -257,8 +256,7 @@ export class FileCache {
    */
   static getFileCacheByFile(context: Context, key: string): ArrayBuffer | undefined {
     // 从文件获取查看是否有缓存
-    let md5Key = SparkMD5.hashBinary(key)
     return FileUtils.getInstance()
-      .readFileSync(context.cacheDir + FileUtils.SEPARATOR + FileCache.CACHE_FOLDER + FileUtils.SEPARATOR + md5Key)
+      .readFileSync(context.cacheDir + FileUtils.SEPARATOR + FileCache.CACHE_FOLDER + FileUtils.SEPARATOR + key)
   }
 }
\ No newline at end of file