Canal-U

Mon compte

Résultats de recherche

Nombre de programmes trouvés : 4637
Label UNT Vidéocours

le (4m52s)

5.3. Attacks against the CFS Scheme

In this session, we will have a look at the attacks against the CFS signature scheme. As for public-key encryption, there are two kinds of attacks against signature schemes. First kind of attack is key recovery attacks where an attacker tries to recover the secret key from the knowledge of the public key. These attacks are exactly the same as against the McEliece cryptosystem that you have seen last week. The only difference is the parameters. Here in the signature, we have a small t and a large n but the algorithm ...
Voir la vidéo
Label UNT Vidéocours

le (4m42s)

5.4. Parallel-CFS

In this session, I will present a variant of the CFS signature scheme called parallel-CFS. We start from a simple question: what happens if you try to use two different hash functions and compute two different CFS signatures? For the signer, you simply take twice as much computation because you have to do two signatures. And then, the signature is twice longer because you have just to concatenate two signatures. One would assume that for the attacker it is the same, he simply has to forge two signatures. Well, things are a ...
Voir la vidéo
Label UNT Vidéocours

le (7m12s)

5.5. Stern’s Zero-Knowledge Identification Scheme

In this session, we are going to have a look at Stern’s Zero-Knowledge Identification Scheme. So, what is a Zero-Knowledge Identification Scheme? An identification scheme allows a prover to prove his identity to a verifier. And the Zero-Knowledge Protocol is an interactive protocol where one proves the knowledge of something, without revealing any information on this knowledge, on this element. So, Stern’s Identification Scheme was invented in 1993 and security relies on the syndrome decoding problem. Contrary to McEliece or the CFS signature, it uses a random binary matrix which means ...
Voir la vidéo
spectacle théâtral

le (26m17s)

Théâtre amateur étudiant : " Crímenes ejemplares ", de Max Aub

Théâtre amateur étudiant : Crímenes ejemplares de Max Aub Max Aub publie ses Crimes exemplaires au Mexique en 1956 et depuis ce petit brûlot est devenu un classique de l’humour noir. Considéré par ses aficionados comme un véritable livre culte, on y trouve cent trente assassinats commis en toute bonne foi, et pour le seul plaisir. Cynisme, férocité et drôlerie se mêlent dans ces confessions affûtées comme des lames de couteau...« Plutôt mourir ! me dit-elle. Et dire que ce que je voulais par-dessus tout c’était lui faire plaisir ...
Voir la vidéo

 
FMSH
 
Facebook Twitter
Mon Compte