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fix crypto csaw detail

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This commit is contained in:
Mari Wahl 2014-10-25 13:39:02 -04:00
parent 90152b4ed3
commit b10717a84f
6 changed files with 130 additions and 3 deletions
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14
CTFs_and_WarGames/2014-CSAW-CTF/cryptography/crypto-200/psifer-school.py
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@ -26,24 +26,28 @@ def solve1(msg):
def solve2(msg):
msg="I'lcslraooh o rga tehhywvf.retFtelh mao ae af ostloh lusr bTsfnr, epawlltddaheoo aneviedr ose rtyyng etn aini ft oooey hgbifecmoswuut!oa eeg ar rr h.u t. hylcg io we ph ftooriysneirdriIa utyco gfl oostif sp u"+'""'+"flcnb roh tprn.o h"
# Shift cypher, but dealing with special characters
for j in range(2, len(msg)):
dec_msg = ['0'] * len(msg)
idec_msg,shift = 0, 0
idec_msg, shift = 0, 0
for i in range(len(msg)):
dec_msg[idec_msg] = msg[i]
idec_msg += j
if idec_msg >= len(msg):
if idec_msg > len(msg) - 1:
shift += 1
idec_msg = shift
dec_msg = "".join(dec_msg)
if "you" not in dec_msg: continue
return dec_msg
def solve3(msg):
# Vigenere Cypher
key = VigCrack(msg).crack_codeword()
@ -57,6 +61,7 @@ def solve3(msg):
if __name__ == '__main__':
"""
PORT = 12345
HOST = '54.209.5.48'
tn = Telnet(HOST ,PORT)
@ -112,3 +117,6 @@ if __name__ == '__main__':
print
print 'Answer stage 3: ' + answer3
print '(key: ' + key + ')'
"""
print solve2(msg='a')