ECDSA pbctf2020 #!/usr/bin/env python3 from Crypto.Cipher import AES from Crypto.Util.Padding import pad, unpad from ecdsa import SECP256k1 from ecdsa.ecdsa import Public_key, Private_key from flag import flag import hashlib import random …

pbctf2020 enigma #!/bin/env python3 from string import ascii_uppercase as UC from random import SystemRandom from enigma.machine import EnigmaMachine from secretstuff import FLAG, PLUGBOARD_SETTINGS assert FLAG.isupper() # Without pbcft{..…

pwnは謎arch問題しかでなくてひどかったがcryptoは良かった https://priv.pub/posts/pbctf-2021 https://m13h.github.io/html/notes.html#org38f8333 https://mystiz.hk/posts/2021-10-11-pbctf/ https://s3v3ru5.github.io/notes/pbctf2021

#pbctf_2021 #rbtree #!/usr/bin/env python3 from Crypto.Util.number import * import random def genPrime(): while True: a = random.getrandbits(256) b = random.getrandbits(256) if b % 3 == 0: continue p = a ** 2 + 3 * b ** 2 if p.bit_length()…

#pbctf_2021 #rbtree #!/usr/bin/env python3 import random from flag import flag def keygen(ln): # Generate a linearly independent key arr = [ 1 << i for i in range(ln) ] for i in range(ln): for j in range(i): if random.getrandbits(1): arr[j…

#pbctf_2021 #UnblvR https://gist.github.com/jhs7jhs/a6e872e7e37e726b3d7bae6f7461e70b https://gist.github.com/myrdyr/c1b77f1cbd8e2acb117e74c7831ef876

#pbctf_2021 #rbtree #!/usr/bin/env python3 import random from flag import flag def keygen(ln): # Generate a linearly independent key arr = [ 1 << i for i in range(ln) ] for i in range(ln): for j in range(i): if random.getrandbits(1): arr[j…