XtraORdinary

xtraordinary/encrypt.py

@@ -0,0 +1,43 @@
+#!/usr/bin/env python3
+
+from random import randint
+
+with open('flag.txt', 'rb') as f:
+    flag = f.read()
+
+with open('secret-key.txt', 'rb') as f:
+    key = f.read()
+
+def encrypt(ptxt, key):
+    ctxt = b''
+    for i in range(len(ptxt)):
+        a = ptxt[i]
+        b = key[i % len(key)]
+        ctxt += bytes([a ^ b])
+    return ctxt
+
+ctxt = encrypt(flag, key)
+
+random_strs = [
+    b'my encryption method',
+    b'is absolutely impenetrable',
+    b'and you will never',
+    b'ever',
+    b'ever',
+    b'ever',
+    b'ever',
+    b'ever',
+    b'ever',
+    b'break it'
+]
+
+for random_str in random_strs:
+    for i in range(randint(0, pow(2, 8))):
+        for j in range(randint(0, pow(2, 6))):
+            for k in range(randint(0, pow(2, 4))):
+                for l in range(randint(0, pow(2, 2))):
+                    for m in range(randint(0, pow(2, 0))):
+                        ctxt = encrypt(ctxt, random_str)
+
+with open('output.txt', 'w') as f:
+    f.write(ctxt.hex())