diff --git a/A_private_public.py b/A_private_public.py
new file mode 100644
index 0000000..f606c23
--- /dev/null
+++ b/A_private_public.py
@@ -0,0 +1,23 @@
+import os
+from Crypto.PublicKey import RSA
+
+def A_key():
+    # 生成密钥对
+    key = RSA.generate(2048)
+
+    # 获取私钥和公钥
+    private_key = key.export_key()
+    public_key = key.publickey().export_key()
+
+    # 获取当前文件的目录路径
+    current_directory = os.path.dirname(__file__)
+
+    # 保存私钥到文件（相对路径）
+    private_file_path = os.path.join(current_directory, 'A_private.txt')
+    with open(private_file_path, 'wb') as private_file:
+        private_file.write(private_key)
+
+    # 保存公钥到文件（相对路径）
+    public_file_path = os.path.join(current_directory, 'A_public.txt')
+    with open(public_file_path, 'wb') as public_file:
+        public_file.write(public_key)