diff --git a/recv/recv.py b/recv/recv.py
index a215b8f..ac101ff 100644
--- a/recv/recv.py
+++ b/recv/recv.py
@@ -35,7 +35,7 @@ def handleLetter(letter:Letter):
         SM4.decrypt_ecb(base64.b64decode(letter.fileBase64),key)
     elif type == config.EncryptType.SM4_CBC:
         SM4.decrypt_cbc_with_iv(base64.b64decode(letter.fileBase64),key)
-    elif type == config.EncryptType.AES_GCM:
+    elif type == config.EncryptType.AES_ECB:
         raise NotImplementedError("未实现")
     elif type == config.EncryptType.AES_CBC:
         raise NotImplementedError("未实现")
diff --git a/sender/sender.py b/sender/sender.py
index 2831a8e..cddad9e 100644
--- a/sender/sender.py
+++ b/sender/sender.py
@@ -56,7 +56,7 @@ def SymEncryption(encryData, key: bytes = None):
         aesUtils = AESUtils(key)
         # tureKey 为 真实返回的Key，如果没有设置初始值，那么key是随机生成
         encryptedData, tureKey = aesUtils.encrypt(encryData, mode=mode)  # 这里encryData要改为文件内容
-        return encryptedData
+        return encryptedData,tureKey
 
     if way == "sm2":
         pass
@@ -69,6 +69,9 @@ def getKey():
 if __name__ == "__main__":
     # 示例数据和密钥
     data = "Hello, AES!"
-    key = "1234567890abcdef"
+    # key = "1234567890abcdef"
+    print(data)
 
-    SymEncryption(data)
+    data,key = SymEncryption(data)
+
+    print(data,key)
\ No newline at end of file
diff --git a/tool/symmetric/AES.py b/tool/symmetric/AES.py
index 034e7ff..a13d576 100644
--- a/tool/symmetric/AES.py
+++ b/tool/symmetric/AES.py
@@ -13,23 +13,23 @@ class AESUtils:
         else:
             self.key = key
 
-    def encrypt(self, data: str, mode: str = 'ECB') -> str:
+    def encrypt(self, data: str, mode: str = 'ECB') -> (str,str):
         """加密数据"""
         cipher = self._get_cipher(mode)
         data = pad(data.encode(), AES.block_size)  # 填充数据
         ciphertext = cipher.encrypt(data)
-        return base64.b64encode(ciphertext).decode()
+        return base64.b64encode(ciphertext).decode(),self.key
 
     def _get_cipher(self, mode: str) -> AES:
         """根据模式返回相应的 AES cipher"""
         iv = None
         if mode == 'CBC':
             iv = get_random_bytes(AES.block_size)
-            return AES.new(self.key, AES.MODE_CBC, iv), self.key
+            return AES.new(self.key, AES.MODE_CBC, iv)
         elif mode == 'CFB':
-            return AES.new(self.key, AES.MODE_CFB), self.key
+            return AES.new(self.key, AES.MODE_CFB)
         elif mode == 'OFB':
-            return AES.new(self.key, AES.MODE_OFB), self.key
+            return AES.new(self.key, AES.MODE_OFB)
         else:  # 默认是 ECB
-            return AES.new(self.key, AES.MODE_ECB), self.key
+            return AES.new(self.key, AES.MODE_ECB)