Posted on 03 May 2021, 18:00 in WriteUps • Tagged with ctf, write-ups, crypto, symmetric, block cipher, trapdoor
Write-up of a crypto challenge during FCSC 2021 - Breaking a trapped block cipher with only 14 plaintext-ciphertext pairs
Posted on 03 May 2021, 18:00 in WriteUps • Tagged with ctf, write-ups, crypto, elliptic curve, discrete log, integer modulo prime-power
Write-up of a crypto challenge during FCSC 2021 - Discrete logarithm on an elliptic curve defined over integers modulo a prime-power
Posted on 21 Nov 2020, 18:30 in WriteUps • Tagged with ctf, write-ups, crypto, elliptic curve, lattice, smpc, secret sharing
Write-up of a crypto challenge during Ledger 2020 CTF - Lattice based attack on ECDSA signatures using known-prefix nonce
Posted on 14 Jun 2019, 12:20 in WriteUps • Tagged with ctf, write-ups, wargame
Posted on 04 Sep 2018, 08:23 in WriteUps • Tagged with ctf, write-ups, TokyoWesternsCTF, RSA, crypto
Posted on 01 Jul 2018, 10:00 in WriteUps • Tagged with ctf, write-ups, GoogleCTF, curve25519, mitm, crypto