An attacker records the network messages a user sends to log in and later sends the same messages again to be accepted as that user, without knowing the password. How do protocols defend against this?
Un attaquant enregistre les messages réseau qu'un utilisateur envoie pour se connecter, puis les renvoie tels quels plus tard pour être accepté comme cet utilisateur, sans connaître le mot de passe. Comment les protocoles se défendent-ils contre cela ?
Answers
ATimestamps or one-time values (nonces) in each exchangeDes horodatages ou des valeurs à usage unique (nonces) dans chaque échange
BBy requiring every username to be much longer than beforeEn exigeant des noms d'utilisateur beaucoup plus longs qu'avant
CBy compressing all of the login trafficEn compressant tout le trafic de connexion
DBy sending the password twice in a rowEn envoyant le mot de passe deux fois de suite
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