Krypton Level 1 → Level 2 풀이

Level Info

The password for level 2 is in the file ‘krypton2’. It is ‘encrypted’ using a simple rotation. It is also in non-standard ciphertext format. When using alpha characters for cipher text it is normal to group the letters into 5 letter clusters, regardless of word boundaries. This helps obfuscate any patterns. This file has kept the plain text word boundaries and carried them to the cipher text. Enjoy!

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0. krypto1 로그인

KRYPTONISGREAT

 

1. 내용확인

krypton1@krypton:/krypton/krypton1$ cat krypton2
YRIRY GJB CNFFJBEQ EBGGRA


>LEVEL TWO PASSWORD ROTTEN

ROT13을 사용했다고 한다. https://www.rot13.com/에서 비밀번호를 확인해봤다. 알파뱃을 암호화할때 오른쪽 13번째 알파뱃으로 치환하는 암호방식이다.

 

 

2. krypto2 비밀번호

ROTTEN