Ledger Donjon CTF 2020 - SMPC Signature

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


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Challenge Richelieu 2019 (WIP)

Posted on 14 Jun 2019, 12:20 in WriteUps • Tagged with ctf, write-ups, wargame

Write-Up of the Richelieu Challenge


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TokyoWesterns CTF 4th 2018: Crypto - Revolutional Secure Angou

Posted on 04 Sep 2018, 08:23 in WriteUps • Tagged with ctf, write-ups, TokyoWesternsCTF, RSA, crypto

RSA-base challenge with a flawed prime numbers generation


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Google CTF 2018: Crypto - MITM

Posted on 01 Jul 2018, 10:00 in WriteUps • Tagged with ctf, write-ups, GoogleCTF, curve25519, mitm, crypto

Man-in-the-middle attack on Curve25519-based handshake


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