pr.<x>とintの変換にはinteger_representation_/_fetch_intを使う
good_challenges_2021
plaidctf2021
polynomial
quadratic_residue
gcm
false_positive
multiplicative_order
pr.<x>とintの変換にはinteger_representation_/_fetch_intを使う
#good_challenges_2021 #PlaidCTF2021 import flag import hashcash import secrets from Crypto.Cipher import AES def gf128(a, b): a = int.from_bytes(a, byteorder="big") b = int.from_bytes(b, byteorder="big") R = 128 P = sum(1 << x for x in [R,…
