An authentication compiler Sample Clauses
An authentication compiler clause defines the requirements and procedures for verifying the identity of parties involved in a transaction or agreement. Typically, this clause outlines the methods or technologies that must be used to authenticate users, such as digital signatures, multi-factor authentication, or secure tokens, and may specify the standards or protocols to be followed. By establishing clear authentication processes, the clause helps prevent unauthorized access and ensures that only legitimate parties can participate, thereby reducing the risk of fraud or security breaches.
An authentication compiler. In [6], ▇▇▇▇ et al. introduced a scalable compiler which transforms any GKA protocol P , secure against passive adversary, to an authenticated GKA protocol P ′, secure against an active adversary. It achieves this by enhancing the protocol to include a (pre-)round where everyone broad- casts its identity and a random nonce. Thereafter each mes- sage is accompanied by a signature on the message, identi- ties of the participants and their nonces (see [6] for details). Then if P is a secure GKA protocol, then the protocol P ′ is a secure Authenticated GKA protocol. Namely, where: qex and qs are the number of Execute and Send queries respectively. ' |P| t′ = t + ( qex + qs).tP ' , tP ' is the time to execute P ′. AdvPA' (t, qex, qs): Advantage of an active adversary ( ′) against the authenticated protocol P ′, making qex Execute queries and qs Send queries in time t. AdvPA(t′, 1): Advantage of a passive adversary ( ) against the protocol P , making 1 Execute query in time t′. A AdvPA(t, qex): Advantage of a passive adversary ( ) against the protocol P , making qex Execute queries in time t′. SuccDDH(t′): Success probability of an adversary against an instance of the DDH problem in time t′. SuccΣ(t′): Success probability of an adversary against the signature scheme Σ in time t′. and k is the security parameter.