decrypt message

README.md

@@ -27,3 +27,6 @@
 ### expanding-nebula
 * Completed in: 6 hrs, 49 mins, 26 secs.
 * DP & time complexity optimization
+
+## Encrypted message
+CFcSBwgCCBoHRhkKU1cGAA4AGU5YQR5THBwNFwoGGAxTQQMQVBUSBg4EAAwQRhUQVBUHFAQTGRpT QQMQVBkPERkECQAWDVwXX1BGEwgJBAwCBFRVHQRGUlFBShwaDVZTGBUFVUdBShsVA1tZBwNGUlFB ShoVB1wXX1BGFAQOSklOQR5HGh5AVRY=

decrypt.py

@@ -0,0 +1,12 @@
+import sys
+if len(sys.argv) != 3:
+    print "Usage: python "+sys.argv[0]+" <encrypted_message> <user_name>"
+    exit(1)
+encrypted_message = sys.argv[1]
+user_name = sys.argv[2]
+
+import base64
+result = []
+for i, c in enumerate(base64.b64decode(encrypted_message)):
+    result.append(chr(ord(c) ^ ord(user_name[i % len(user_name)])))
+print ''.join(result)