diff --git a/diy4.py b/diy4.py
new file mode 100644
index 0000000..8c48713
--- /dev/null
+++ b/diy4.py
@@ -0,0 +1,26 @@
+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mes
+text=""
+for i in message:
+    tr0=random.choice(key)
+    tr1=random.choice(key)
+    text=text+i+tr0+tr1
+
+a="kxyjr0828"
+text=list(text)
+index=random.randint(0,len(text))
+
+text.insert(index,a)
+text="".join(text) 
+print(text)  
+    
+
+    
+
+