diff --git a/diy4.py b/diy4.py
new file mode 100644
index 0000000..3f2e450
--- /dev/null
+++ b/diy4.py
@@ -0,0 +1,22 @@
+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！"
+key_message = ""
+str = "port****@#$%%^&**$%^&*"
+text=""
+# 请使用私钥key，对message进行加密
+for i in message:
+    str1 = i
+    str2 = random.choice(message)
+    str3 = random.choice(message)
+    
+    text = text + str1 + str2 + str3
+list_text = list(text)
+list_text.insert(random.randint(0,len(message)),str)
+text = "".join(list_text)
+print(text)
+
+