diff --git a/diy4.py b/diy4.py
new file mode 100644
index 0000000..47fc0df
--- /dev/null
+++ b/diy4.py
@@ -0,0 +1,22 @@
+import random
+
+# 私钥
+key = "rjgsdurigsdkvhsdigfiksed！"
+# 要加密语句
+message = "吃粑粑！"
+
+# 请使用私钥key，对message
+key_message=""
+noise="@@$@43w43"
+for i in message:
+    
+    str1=i
+    str2=random.choice(key)
+    str3=random.choice(key)
+    str4=str1+str2+str3
+    key_message=key_message+str4
+print(key_message)
+list_message=list(key_message)
+list_message.insert(5,noise)
+result_message="".join(list_message)
+print(result_message)
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