International Association for Cryptologic Research

International Association
for Cryptologic Research

CryptoDB

Carolyn Whitnall

Publications

Year
Venue
Title
2019
ASIACRYPT
A Critical Analysis of ISO 17825 (‘Testing Methods for the Mitigation of Non-invasive Attack Classes Against Cryptographic Modules’)
Carolyn Whitnall Elisabeth Oswald
The ISO standardisation of ‘Testing methods for the mitigation of non-invasive attack classes against cryptographic modules’ (ISO/IEC 17825:2016) specifies the use of the Test Vector Leakage Assessment (TVLA) framework as the sole measure to assess whether or not an implementation of (symmetric) cryptography is vulnerable to differential side-channel attacks. It is the only publicly available standard of this kind, and the first side-channel assessment regime to exclusively rely on a TVLA instantiation.TVLA essentially specifies statistical leakage detection tests with the aim of removing the burden of having to test against an ever increasing number of attack vectors. It offers the tantalising prospect of ‘conformance testing’: if a device passes TVLA, then, one is led to hope, the device would be secure against all (first-order) differential side-channel attacks.In this paper we provide a statistical assessment of the specific instantiation of TVLA in this standard. This task leads us to inquire whether (or not) it is possible to assess the side-channel security of a device via leakage detection (TVLA) only. We find a number of grave issues in the standard and its adaptation of the original TVLA guidelines. We propose some innovations on existing methodologies and finish by giving recommendations for best practice and the responsible reporting of outcomes.
2015
EPRINT
2015
EPRINT
2015
EPRINT
2015
CHES
2014
EPRINT
2014
ASIACRYPT
2013
CHES
2013
FSE
2011
CRYPTO