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Paper 2017/984
Self-Guarding Cryptographic Protocols against Algorithm Substitution Attacks
Marc Fischlin and Sogol Mazaheri
Abstract
We put forward the notion of self-guarding cryptographic protocols as a countermeasure to algorithm substitution attacks. Such self-guarding protocols can prevent undesirable leakage by subverted algorithms if one has the guarantee that the system has been properly working in an initialization phase. Unlike detection-based solutions they thus proactively thwart attacks, and unlike reverse firewalls they do not assume an online external party. We present constructions of basic primitives for (public-key and private-key) encryption and for signatures. We also argue that the model captures attacks with malicious hardware tokens and show how to self-guard a PUF-based key exchange protocol.
Metadata
- Available format(s)
-
PDF
- Publication info
- Published elsewhere. Minor revision. IEEE CSF 2018
- DOI
- 10.1109/CSF.2018.00013
- Contact author(s)
- sogol mazaheri @ cryptoplexity de
- History
- 2018-08-20: last of 2 revisions
- 2017-10-09: received
- See all versions
- Short URL
- https://ia.cr/2017/984
- License
-
CC BY
