Password authentication with insecure communication
Communications of the ACM
NetCard - A Practical Electronic-Cash System
Proceedings of the International Workshop on Security Protocols
Electronic Lottery Tickets as Micropayments
FC '97 Proceedings of the First International Conference on Financial Cryptography
On the Continuum Between On-line and Off-line E-cash Systems - 1
FC '97 Proceedings of the First International Conference on Financial Cryptography
An Efficient Micropayment System Based on Probabilistic Polling
FC '97 Proceedings of the First International Conference on Financial Cryptography
Micropayments via Efficient Coin-Flipping
FC '98 Proceedings of the Second International Conference on Financial Cryptography
SWAPEROO: a simple wallet architecture for payments, exchanges, refunds, and other operations
WOEC'98 Proceedings of the 3rd conference on USENIX Workshop on Electronic Commerce - Volume 3
Tamper resistance: a cautionary note
WOEC'96 Proceedings of the 2nd conference on Proceedings of the Second USENIX Workshop on Electronic Commerce - Volume 2
The millicent protocols for electronic commerce
WOEC'95 Proceedings of the 1st conference on USENIX Workshop on Electronic Commerce - Volume 1
Elliptic Curve Cryptography on a Palm OS Device
ACISP '01 Proceedings of the 6th Australasian Conference on Information Security and Privacy
Offline Micropayments without Trusted Hardware
FC '01 Proceedings of the 5th International Conference on Financial Cryptography
Weighted One-Way Hash Chain and Its Applications
ISW '00 Proceedings of the Third International Workshop on Information Security
PGP in constrained wireless devices
SSYM'00 Proceedings of the 9th conference on USENIX Security Symposium - Volume 9
CryptoPalm: a cryptographic library for PalmOS
PCI'05 Proceedings of the 10th Panhellenic conference on Advances in Informatics
PayStar: A denomination flexible micropayment scheme
Information Sciences: an International Journal
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This paper describes our experience with implementing an electronic payment system for the PalmPilot. Although Palm OS lacks support for many desired security features, we are able to build a system suitable for small payments. We discuss the advantages and disadvantages of using a PDA to make secure payments as opposed to using a smartcard or a desktop PC. In addition, we describe the engineering of PDA-PayWord, our implementation of a commerce protocol that takes advantage of both elliptic curve and RSA public key cryptography to support payments efficiently on PDAs with limited processing capability.