diff --git a/diy4.py b/diy4.py
new file mode 100644
index 0000000..d4a7c05
--- /dev/null
+++ b/diy4.py
@@ -0,0 +1,21 @@
+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 = input("输入你要加㊙的语句吧！")
+wda="金卡垃圾啊垃圾的"
+ss=""
+
+# 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)
+    awd=(str1+str2+str3)
+    ss=ss+awd
+sss=list(ss)
+q=random.randint(0,len(sss))
+sss.insert(q,wda)
+ss="".join(sss)
+print(ss)
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