Untraceable off-line cash in wallet with observers
CRYPTO '93 Proceedings of the 13th annual international cryptology conference on Advances in cryptology
Authenticating public terminals
Computer Networks: The International Journal of Computer and Telecommunications Networking - Special issue on computer network security
Untraceable electronic mail, return addresses, and digital pseudonyms
Communications of the ACM
Authentication and Delegation with Smart-cards
TACS '91 Proceedings of the International Conference on Theoretical Aspects of Computer Software
The Untrusted Computer Problem and Camera-Based Authentication
Pervasive '02 Proceedings of the First International Conference on Pervasive Computing
Low Cost Attacks on Tamper Resistant Devices
Proceedings of the 5th International Workshop on Security Protocols
Anonymous Connections and Onion Routing
SP '97 Proceedings of the 1997 IEEE Symposium on Security and Privacy
Protection of Keys against Modification Attack
SP '01 Proceedings of the 2001 IEEE Symposium on Security and Privacy
Smart Card Handbook
Mitigating the Untrusted Terminal Problem Using Conditional Signatures
ITCC '04 Proceedings of the International Conference on Information Technology: Coding and Computing (ITCC'04) Volume 2 - Volume 2
Providing authentication to messages signed with a smart card in hostile environments
WOST'99 Proceedings of the USENIX Workshop on Smartcard Technology on USENIX Workshop on Smartcard Technology
Breaking up is hard to do: modeling security threats for smart cards
WOST'99 Proceedings of the USENIX Workshop on Smartcard Technology on USENIX Workshop on Smartcard Technology
Towards an information theoretic metric for anonymity
PET'02 Proceedings of the 2nd international conference on Privacy enhancing technologies
Using multiple smart cards for signing messages at malicious terminals
ISC'06 Proceedings of the 9th international conference on Information Security
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Human users need trusted computers when they want to generate digital signatures. In many applications, in particular, if the users are mobile, they need to carry their trusted computers with themselves. Smart cards are easy to use, easy to carry, and relatively difficult to tamper with, but they do not have a user interface; therefore, the user still needs a terminal for authorizing the card to produce digital signatures. If the terminal is malicious, it can mislead the user and obtain a digital signature on an arbitrary document. In order to mitigate this problem, we propose a solution based on conditional signatures. More specifically, we propose a framework for the controlled revocation of unintended digital signatures. We also propose a solution with a special emphasis on privacy issues.