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IDC seminar (4 Aug): Observer-Resistant Password Systems (ORPSs): Security versus Usability

July, 2015

Dr Shujun Li

  • Abstract

Observer-resistant password systems (ORPSs, also known as human authentication against observers or leakage-resilient password systems)have been studied since the early 1990s in both cryptography and computer security contexts, but until today a both secure and usable ORPS remains an open question to the research community. The concept of ORPS can be used to cover a large family of attacks against password-based human authentication systems such as shoulder surfers, hidden cameras, man-in-the-middle, keyloggers and other malware. A key assumption of ORPS is that human users must respond to authentication challenges without using any computational devices (which are considered untrusted). In other words, the threat model behind ORPSs assumes that other than the human user’s brain, nothing is trusted. The main security requirement is to avoid disclosure of the shared secret between the human user and the verifier (i.e., password) even after a practically large number of authentication sessions observed by untrusted parties.

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IDC Seminar (10 Sep) by Kary Myers from Los Alamos (TBC)

July, 2015

Potential topic: support data analysis of big computer simulations

IDC seminar (15 Sep) – Show and Tell with School of Arts and Design (TBC)

July, 2015

IDC Seminar (16 Sep) – by Jens Gulden from University of Duisburg-Essen (TBC)

July, 2015

IDC Seminar (22 Sep) – by Nicolai Marquardt from UCL (TBC)

July, 2015