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MaltaCTF: true random
So it seems I need to transfer a flag or something. Fortunately - no cryptographer can break OTP! Unfortunately… my cat may have shuffled my otp codes around. Should be fine though, we have a few quantum circuits conveniently shared between us that we can use as our checksums! Surely the checksum of a random output won’t let you break my OTP!
MOCA CTF Quals: RPS
In this challenge we’re given a rock-paper-scissors playing server with a custom cookie system and our objective is to win 100 consecutive games. The state is stored completely inside of a session cookie encrypted with a custom symmetric cipher.