from base64 import b64encode as be
from secret import msg, KEY
 
#msg and KEY are meaningful english sentences in l33t
msg2 = msg.replace('_','')
KEY = KEY.replace('_','')
 
assert  (len(KEY)==7) and KEY.isalnum() and msg2.isalnum()
assert 'n00bCTF' in msg2
 
def XOR(A, B):
	return ''.join(chr(ord(A[i])^ord(B[i%len(B)])) for i in range(len(A)))
 
def encryption(msg, key):
	return be(XOR(msg, KEY))
 
def print_flag(msg):
	print 'CTF{%s}' % msg
 
if __name__ == '__main__':
	print encryption(msg2, KEY)					#DRcGGQBfGw1QEA4XBUURCA0MDQdGBlFTCTo7MxwJUhgAXBQa
	#Decrypt msg2 to get the flag
	print_flag(msg2)# your code goes here

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