diff --git a/cilent b/cilent
new file mode 100644
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--- /dev/null
+++ b/cilent
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+import base64
+import hashlib
+
+import rsa
+from Crypto.Cipher import AES, DES3
+from Crypto.Hash import SHA256
+from Crypto.PublicKey import RSA
+from Crypto.Signature import PKCS1_v1_5
+from pyDes import ECB, PAD_PKCS5, des
+
+
+def createcip(path, op):
+    # 传输的文件
+    filename = path
+    # 加密对称密钥
+    with open("../server/Bpubkey.pem", mode="rb") as f:
+        pub = f.read()
+        pubkey = rsa.PublicKey.load_pkcs1(pub)
+    message = "12345678" if op == "DES" else "1234567812345678"
+    info = rsa.encrypt(message.encode("utf-8"), pubkey)
+    with open("encryptedkeyfile.bin", "wb") as key_file:  # 生成加密文本encryptedkeyfile
+        key_file.write(info)
+
+    # 加密文件 DES算法加密
+    with open(filename, "r", encoding="utf-8") as f:
+        plaintext = f.read()
+
+    x = plaintext
+    while len(x) % 16 != 0:  # 如果text不足16位的倍数就用空格补足为16位
+        x += "\0"
+        x = x
+    if op == "DES":
+        SECRET_KEY = message
+        print(len(message))
+        iv = SECRET_KEY
+        des_obj = des(SECRET_KEY, ECB, iv, padmode=PAD_PKCS5)
+        secret = des_obj.encrypt(x)
+    elif op == "AES_ECB":
+        SECRET_KEY = message.encode()
+        aes_obj = AES.new(SECRET_KEY, AES.MODE_ECB)
+        secret = aes_obj.encrypt(x.encode())
+    elif op == "AES_CBC":
+        iv = message.encode()
+        SECRET_KEY = message.encode()
+        aes = AES.new(SECRET_KEY, AES.MODE_CBC)
+        secret = aes.encrypt(x.encode())
+    with open("encryptedfile.txt", "wb") as cip:  # encryptedfile
+        cip.write(secret)
+    # 计算摘要值以及签名
+    out1 = hashlib.sha256(plaintext.encode('"utf-8"')).hexdigest()
+    out1 = out1.encode("utf-8")
+    privkey_key_file = open("./Aprivkey.pem", "rb").read().decode("utf-8")
+    # 导入公钥，返回一个RSA秘钥对象
+    private_key = RSA.importKey(privkey_key_file)
+    h = SHA256.new(out1)
+    signer = PKCS1_v1_5.new(private_key)
+    signature = signer.sign(h)
+    # 对需要加密的消息进行PKCS#1 v1.5加密，再使用Base64对类似字节的对象进行编码。
+    sig = base64.b64encode(signature)
+    with open("sigfile.bin", "wb") as f:  # 生成签名文件sigfile
+        f.write(sig)