2021-09-05から1日間の記事一覧

CakeCTF 2021 Writeup [Crypto]

[Crypto] discrete_log from Crypto.Util.number import getPrime, isPrime, getRandomRange def getSafePrime(bits): while True: p = getPrime(bits - 1) q = 2*p + 1 if isPrime(q): return q with open("flag.txt", "rb") as f: flag = f.read().strip()…