A new human identification protocol and coppersmith's baby-step giant-step algorithm
ACNS'10 Proceedings of the 8th international conference on Applied cryptography and network security
Cryptanalysis of the convex hull click human identification protocol
ISC'10 Proceedings of the 13th international conference on Information security
Breaking undercover: exploiting design flaws and nonuniform human behavior
Proceedings of the Seventh Symposium on Usable Privacy and Security
Designing leakage-resilient password entry on touchscreen mobile devices
Proceedings of the 8th ACM SIGSAC symposium on Information, computer and communications security
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Securely authenticating a human user without assistance from any auxiliary device in the presence of powerful passive adversaries is an important and challenging problem. Passive adversaries are those that can passively monitor, intercept, and analyze every part of the authentication procedure, except for an initial secret shared between the user and the server. In this paper, we propose a new secure authentication scheme called Predicate-based Authentication Service (PAS). In this scheme, for the first time, the concept of a predicate is introduced for authentication. We conduct analysis on the proposed scheme and implement its prototype system. Our analytical data and experimental data illustrate that the PAS scheme can simultaneously achieve a desired level of security and user friendliness.