update user_key dialogue

main.py

@@ -215,11 +215,8 @@ async def analyze_feedback(request: AnalysisRequest):
 
 def decrypt_user_key(encrypted_key: str) -> str:
     try:
-        # 使用与前端相同的私钥
-        private_key = SECRET_KEY
-        
         # 创建RSA解密对象
-        cipher = PKCS1_OAEP.new(RSA.import_key(private_key))
+        cipher = PKCS1_OAEP.new(RSA.import_key(SECRET_KEY))
         
         # 解码base64并解密
         encrypted_data = base64.b64decode(encrypted_key)