Special Uses and Abuses of the Fiat-Shamir Passport Protocol. Desmedt, Y., Goutier, C., & Bengio, S. In Advances in Cryptology, Crypto, Lecture Notes in Computer Science, volume LNCS 293, pages 21–39, Santa Barbara, USA, 1988. Springer Verlag. Paper abstract bibtex If the physical description of a person would be unique and adequately used and tested, then the security of the fiat-shamir scheme is not based on zero-knowledge. otherwise some new frauds exist. the feige-fiat-shamir scheme always suffers from these frauds. using an extended notion of subliminal channels, several other undetectable abuses of the fiat-shamir protocol, which are not possible with ordinary passports, are discussed. this technique can be used by a terrorist sponsoring country to communicate 500 new words of secret information each time a tourist passport is verified. a non-trivial solution to avoid these subliminal channel problems is presented. the notion of relative zero-knowledge is introduced.
@inproceedings{desmedt:1988:crypto,
author = {Y. Desmedt and C. Goutier and S. Bengio},
address = {Santa Barbara, USA},
booktitle = {Advances in Cryptology, {Crypto}, Lecture Notes in Computer Science},
volume = {LNCS 293},
pages = {21--39},
title = {Special Uses and Abuses of the {F}iat-{S}hamir Passport Protocol},
year = 1988,
publisher = {Springer Verlag},
url = {publications/ps/desmedt_1988_crypto.ps.gz},
pdf = {publications/pdf/desmedt_1988_crypto.pdf},
djvu = {publications/djvu/desmedt_1988_crypto.djvu},
original= {ps/desmedt_1988_crypto.ps.gz},
web = {http://www.springerlink.com/link.asp?id=p396r1bxug8797yh},
abstract = {If the physical description of a person would be unique and adequately used and tested, then the security of the fiat-shamir scheme is not based on zero-knowledge. otherwise some new frauds exist. the feige-fiat-shamir scheme always suffers from these frauds. using an extended notion of subliminal channels, several other undetectable abuses of the fiat-shamir protocol, which are not possible with ordinary passports, are discussed. this technique can be used by a terrorist sponsoring country to communicate 500 new words of secret information each time a tourist passport is verified. a non-trivial solution to avoid these subliminal channel problems is presented. the notion of relative zero-knowledge is introduced.},
categorie = {C}
}
% thesis and book chapters
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