Mitigating the untrusted terminal problem using conditional signatures

István Zsolt Berta, Levente Buttyán, István Vajda

Research output: Conference contribution

16 Citations (Scopus)

Abstract

We study the problem of how a user at an untrusted terminal can generate digital signatures with the help of a smart card. This problem may arise in many practical applications; an example would be a user generating an electronic check at a merchant's terminal in a shop. The danger is that the terminal can obtain a signature from the card on an arbitrarily chosen document, that is different from the one displayed on the screen and confirmed by the user. We propose a solution to this problem which is based on a new concept called conditional signature. This leads to a new paradigm where digital signatures are not considered as non-repudiable proofs, at least until a short deadline.

Original languageEnglish
Title of host publicationInternational Conferen ON Information Technology
Subtitle of host publicationCoding Computing, ITCC 2004
EditorsP.K. Srimani, A. Abraham, M. Cannataro, J. Domingo-Ferrer, R. Hashemi
Pages12-16
Number of pages5
DOIs
Publication statusPublished - júl. 7 2004
EventInternational Conference on Information Technology: Coding Computing, ITCC 2004 - Las Vegas, NV, United States
Duration: ápr. 5 2004ápr. 7 2004

Publication series

NameInternational Conference on Information Technology: Coding Computing, ITCC
Volume1

Other

OtherInternational Conference on Information Technology: Coding Computing, ITCC 2004
CountryUnited States
CityLas Vegas, NV
Period4/5/044/7/04

ASJC Scopus subject areas

  • Software
  • Information Systems
  • Engineering(all)

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  • Cite this

    Berta, I. Z., Buttyán, L., & Vajda, I. (2004). Mitigating the untrusted terminal problem using conditional signatures. In P. K. Srimani, A. Abraham, M. Cannataro, J. Domingo-Ferrer, & R. Hashemi (Eds.), International Conferen ON Information Technology: Coding Computing, ITCC 2004 (pp. 12-16). (International Conference on Information Technology: Coding Computing, ITCC; Vol. 1). https://doi.org/10.1109/ITCC.2004.1286418