OverTheWire-Krypton:Level 2

Now, ssh krypton2@krypton.labs.overthewire.org
The password is R****N.

Level Info:

Krypton 2

Substitution ciphers are a simple replacement algorithm. In this example of a substitution cipher, we will explore a ‘monoalphebetic’ cipher. Monoalphebetic means, literally, “one alphabet” and you will see why.

This level contains an old form of cipher called a ‘Caesar Cipher’. A Caesar cipher shifts the alphabet by a set number. For example:

plain: a b c d e f g h i j k … cipher: G H I J K L M N O P Q …

In this example, the letter ‘a’ in plaintext is replaced by a ‘G’ in the ciphertext so, for example, the plaintext ‘bad’ becomes ‘HGJ’ in ciphertext.

The password for level 3 is in the file krypton3. It is in 5 letter group ciphertext. It is encrypted with a Caesar Cipher. Without any further information, this cipher text may be difficult to break. You do not have direct access to the key, however you do have access to a program that will encrypt anything you wish to give it using the key. If you think logically, this is completely easy.

One shot can solve it!

Have fun.

Alrite! Question seems to be a bit long. So we need to perform caesar shift to get the password.
The file Krypton3 contains the encrypted password: OMQEMDUEQMEK
Use the code https://sowmyaravidas.wordpress.com/2012/09/15/encryption-code-for-caesar-cipher/ here
with proper indentation to decrypt it. This helps you generate all the possibilities:
PNRFNEVFRNFL
QOSGOFWGSOGM
RPTHPGXHTPHN
SQUIQHYIUQIO
TRVJRIZJVRJP
USWKSJAKWSKQ
VTXLTKBLXTLR
WUYMULCMYUMS
XVZNVMDNZVNT
YWAOWNEOAWOU
ZXBPXOFPBXPV
AYCQYPGQCYQW
BZDRZQHRDZRX
CAESARISEASY
DBFTBSJTFBTZ
ECGUCTKUGCUA
FDHVDULVHDVB
GEIWEVMWIEWC
HFJXFWNXJFXD
IGKYGXOYKGYE
JHLZHYPZLHZF
KIMAIZQAMIAG
LJNBJARBNJBH
MKOCKBSCOKCI
NLPDLCTDPLDJ

You got the password for next level!!

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One thought on “OverTheWire-Krypton:Level 2

  1. saef June 22, 2013 at 5:49 pm Reply

    AA DC CF FB C5 59 0B D3 A6 F3 D7 EC 12 A8 DC 88 91 30 10 BD 63 77 6A E9 E5 A0 AA 5F C6 66 D2 04 34 75 CC F1 E5 9B EF 99 2F D2 78 DE E4 61 6E 95 EC D5 1D 88 C9 11 B5 4C 68 AD 6F 9C 5E 28 FE 63 BB 42 B5 4D 47 73 7F 14 21 60 00 C7 94 7A D2 47 53 9F 74 F0 B4 F1 CA A8 26 C4 FB B9 DB 0B 39 7B 20 19 94 FD FA 50 B0 A1 33 B9 A0 78 24 92 9E F6 15 2E 5F 0C 78 4F 57 AB 0F 64 B0 86 0E A0

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