Wechall - Transposition I

Crypto - Transposition I

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It seems that the simple substitution ciphers are too easy for you.
From my own experience 
I can tell that transposition ciphers are more difficult to attack.

However, in this training challenge 
you should have not much problems to reveal the plaintext.

oWdnreuf.lY uoc nar ae dht eemssga eaw yebttrew eh nht eelttre sra enic roertco drre . Ihtni koy uowlu dilekt oes eoyrup sawsro don:wo ilsdlsbgad.c

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Solution

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전치암호는 단순하게 글자들의 위치를 서로 바꿔놓은 암호.

암호문의 첫 단어인 oWdnreuf.lY 를 보면 Wonderful임을 유추할 수 있음.

즉, 앞 뒤 자리끼리 서로 바꿔놓은 것이므로 암호화 키는 21, 복호화 키도 21이 됨.

cipher='[cipher]'

for i in range(0,len(cipher),2):
    print(cipher[i+1]+cipher[i], end='')
print('')

Wonderful.

You can read the message way better when the letters are in correct order.

I think you would like to see your password now: olidsslgbdac.

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참고

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Link

bpsecblog.wordpress.com/2016/08/12/amalmot_3/

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