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Smart Cards in Hostile Environments
Howard Gobioff, Carnegie Mellon University; Sean Smith, IBM Research; J.D. Tygar, Carnegie Mellon University; Bennet Yee, UC San Diego
One often hears the claim that smart cards are the solution to a number of security problems, including those arising in point-of-sale systems. In this paper, we characterize the minimal properties necessary for the secure smart card point-of-sale transactions. Many proposed systems fail to provide these properties: problems arise from failures to provide secure communication channels between the user and the smart card while operating in a potentially hostile environment (such as a point-of-sale application.) Moreover, we discuss several types of modifications that can be made to give smart cards additional input/output capacity with a user, and describe how this additional I/O can address the hostile environment problem. We give a notation for describing the effectiveness of smart cards under various environmental assumptions. We discuss several security equivalences among different scenarios for smart cards in hostile environments.
author = {Howard Gobioff and Sean Smith and J.D. Tygar and Bennet Yee},
title = {Smart Cards in Hostile Environments},
booktitle = {2nd USENIX Workshop on Electronic Commerce (EC 96)},
year = {1996},
address = {Oakland, CA},
url = {https://www.usenix.org/conference/2nd-usenix-workshop-electronic-commerce/smart-cards-hostile-environments},
publisher = {USENIX Association},
month = nov
}
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