Izvorni znanstveni članak
https://doi.org/10.24138/jcomss.v6i2.191
SSSL: Shoulder Surfing Safe Login
Toni Perković
orcid.org/0000-0001-8826-4905
; Department of electronics, FESB, University of Split, Croatia
Mario Čagalj
; Department of electronics, FESB, University of Split, Croatia
Nikola Rakić
; Department of electronics, FESB, University of Split, Croatia
Sažetak
Classical PIN-entry methods are vulnerable to a broad class of observation attacks (shoulder surfing, key-logging). A number of alternative PIN-entry methods that are based on human cognitive skills have been proposed. These methods can be classified into two classes regarding information available to a passive adversary: (i) the adversary fully observes the entire input and output of a PIN-entry procedure, and (ii) the adversary can only partially observe the input and/or output. In this paper we propose a novel PIN-entry scheme- Shoulder Surfing Safe Login (SSSL). SSSL is a challenge response protocol that allows a user to login securely in the presence of the adversary who can observe (via key-loggers, cameras) user input. This is accomplished by restricting the access to SSSL challenge values. Compared to existing solutions, SSSL is both user-friendly (not mentally demanding) and cost efficient. Our usability study reveals that the average login time with SSSL is around 8 sec in a 5-digit PIN scenario. We also show the importance of considering side-channel timing attacks in the context of authentication schemes based on human cognitive skills.
Ključne riječi
Hrčak ID:
180405
URI
Datum izdavanja:
22.6.2010.
Posjeta: 1.394 *