1

set1/challenge4.py

@@ -0,0 +1,13 @@
+import binascii
+
+with open("set1/4.txt",'r') as file:
+    lines = file.readlines()
+
+hex_str = "".join(line.strip() for line in lines)
+bytes_str = binascii.unhexlify(hex_str)
+
+for key in range(256):
+    decrypted = "".join(chr(b ^ key) for b in bytes_str)
+print(decrypted)
+
+# 不知道为什么全部都是乱码