#nullconHackIM2019 https://ctftime.org/task/7514 4 bit key space is brute forceable so how about 48 bit key space? flag is hackim19{decrypted flag} 16 bit plaintext: b'0467a52afa8f15cfb8f0ea40365a6692' flag: b'04b34e5af4a1f5260f6043b8b9abb…

#done #wakaran #des https://github.com/Cryptanalyse/writeups/tree/master/2020-insomnihack-teaser/crypto-OutOfTheSbox http://blog.tihmstar.net/2020/01/writeup-out-of-sbox-insomnihack-teaser.html 50000個の plaintext - ciphertext pairが与えら…