diff --git a/diy4.py b/diy4.py
new file mode 100644
index 0000000..4cfd1ce
--- /dev/null
+++ b/diy4.py
@@ -0,0 +1,23 @@
+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！"
+text=""
+# 请使用私钥key，对message进行加密
+for i in message:
+    str1=i
+    str2=random.choice(key)
+    str3=random.choice(key)
+    text=text+str1+str2+str3
+a="!@#$%^&*()"
+text=list(text)
+text.insert(random.randint(0,len(text)),a)
+text="".join(text)
+print(text)
+
+
+
+
+
+