cipher | More Smoked Leet Chicken

Mar
07

feistel – 5 – 15 solves : crypto: I just made a brand new cipher! Can you recover the key? 52.86.232.163:32785 feistel.go Summary: slide with a twist attack

Tags: 2016, bkp, chosen ciphertext, chosen plaintext, cipher, cryptanalysis, ctf, Feistel, go, python, slide, twist, writeup

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Apr
20

PlaidCTF 2014 wheeeee writeup

Writeups

by hellman

Although it seems like The Plague’s messaging service is secure, there are bound to be bugs in any 20th century crypto system. We’ve recovered a version of the block cipher The Plague implemented. Use their online encryptor tool, at 54.82.75.29:8193, to break the cipher and figure out Plague’s secret plans. NOTE: When the service sends… Continue reading »

Tags: 2014, cipher, crypto, ctf, plaidctf, python, slide

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Feb
13