Publikationen

Autor	Fischlin, Marc; Mazaheri, Sogol
Datum	2018
Art	Conference Proceedings
Abstrakt	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.
Konferenz	2018 IEEE 31st Computer Security Foundations Symposium (CSF)
ISBN	978-1-5386-6680-7
In	2018 IEEE 31st Computer Security Foundations Symposium (CSF), p.76-90
Publisher	IEEE
Url	https://tubiblio.ulb.tu-darmstadt.de/id/eprint/107197

Self-Guarding Cryptographic Protocols against Algorithm Substitution Attacks