diff --git a/diy4.py b/diy4.py
index e69de29..5d8a818 100644
--- a/diy4.py
+++ b/diy4.py
@@ -0,0 +1,22 @@
+import random
+
+# 私钥
+key = "abcdefgh使用编程实现位移替换加密，制作密码机关真是太好玩了哈哈！"
+# 要加密语句
+message = print("请输入")
+key_message="" 
+# 请使用私钥key，对message进行加密
+noise="gkgigikhyg"
+for i in range(len(message)):
+    str1=1
+    str2=random.choice(key)
+    str3=random.choice(key)
+    key_message=key_message+d
+
+list_message=list(key_message)
+
+index=random.random(key)
+list_message.insert(index,noise)
+
+result_message=""join(list_message)
+print(result_message)
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