diff --git a/server_panduan.py b/server_panduan.py
new file mode 100644
index 0000000..5fb8619
--- /dev/null
+++ b/server_panduan.py
@@ -0,0 +1,54 @@
+import hashlib, base64
+from tkinter import *
+from tkinter import ttk
+from pyDes import des, PAD_PKCS5, ECB
+from Crypto.PublicKey import RSA
+from Crypto.Hash import SHA256
+from Crypto.Signature import PKCS1_v1_5
+import rsa
+from pyDes import des, CBC, PAD_PKCS5
+from Crypto.Cipher import AES
+import binascii
+
+
+def panduan(root, op):
+    with open("encryptedkeyfile.bin", "rb") as f:
+        encryptedkeyfile = f.read()
+    with open("./Bprivkey.pem", "rb") as YY:
+        Bprivkey = YY.read()
+    privkey = rsa.PrivateKey.load_pkcs1(Bprivkey)
+    m = rsa.decrypt(encryptedkeyfile, privkey)
+
+    with open("encryptedfile.txt", "rb") as ff:
+        encryptedfile = ff.read()
+    secret_key = m
+    iv = secret_key
+    if op == "DES":
+        des_obj = des(secret_key, ECB, iv, pad=None, padmode=PAD_PKCS5)
+        decrypt_str = des_obj.decrypt(encryptedfile)
+    elif op == "AES_ECB":
+        aes_obj = AES.new(secret_key, mode=AES.MODE_ECB)
+        decrypt_str = aes_obj.decrypt(encryptedfile)
+    elif op == "AES_CBC":
+        aes = AES.new(secret_key, AES.MODE_CBC)  # CBC模式下解密需要重新创建一个aes对象
+        decrypt_str = aes.decrypt(encryptedfile)
+
+    decrypt_str1 = decrypt_str.decode().rstrip("\0").encode()
+
+    decrypt_str2 = hashlib.sha256(decrypt_str1).hexdigest().encode("utf-8")
+    Apubkey = open("../client/Apubkey.pem", "rb").read().decode("utf-8")
+    key = RSA.importKey(Apubkey)
+    h = SHA256.new(decrypt_str2)
+    verifier = PKCS1_v1_5.new(key)
+    signature = open("sigfile.bin", "rb").read().decode()
+    if verifier.verify(h, base64.b64decode(signature)):
+        print("正确!")
+        zhaiyao = Label(
+            root, text="成功！",  width=10, height=1
+        )
+
+    else:
+        zhaiyao = Label(
+            root, text="失败",  width=10, height=1
+        )
+    zhaiyao.place(x=200,y=380,width=180,height=60)