diff --git a/diy4.py b/diy4.py
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+++ b/diy4.py
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+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 = "诺依，周末一起去看动漫展吧！"
+# 请使用私钥key，对message进行加密
+key_message=''
+noise='iwqehewuief'
+for i in message:
+    a=i
+    b=random.choice(key)
+    c=random.choice(key)
+    text=a+b+c
+    key_message=key_message+text
+print(key_message)
+list_messag=list(key_message)
+index=random.randint(0,len(key_message))
+list_messag.insert(index,noise)
+
+result_message="".join(list_messag)
+print(result_message)
+
+
+
+
+
+
+
+
+
+