diff --git a/diy4.py b/diy4.py
new file mode 100644
index 0000000..ea8da50
--- /dev/null
+++ b/diy4.py
@@ -0,0 +1,28 @@
+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！"
+jj="$%$@$@#%$#%^^%"
+# 要加密语句
+message = "诺依，周末一起去看动漫展吧！"
+text1=""
+# 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=i+str2+str3
+    text1=text1+text
+
+list1=list(text1)
+
+a=random.randint(0,len(list1))
+
+b=random.randint(0,len(list1))
+
+list1.insert(a,jj)
+list1.insert(b,jj)
+test1="".join(list1)
+print(test1)
+  
+