Security without identification: transaction systems to make big brother obsolete
Communications of the ACM
Untraceable electronic mail, return addresses, and digital pseudonyms
Communications of the ACM
Elliptic curve cryptography on smart cards without coprocessors
Proceedings of the fourth working conference on smart card research and advanced applications on Smart card research and advanced applications
Elliptic Curve Cryptography on a Palm OS Device
ACISP '01 Proceedings of the 6th Australasian Conference on Information Security and Privacy
Smart Card Crypto-Coprocessors for Public-Key Cryptography
CARDIS '98 Proceedings of the The International Conference on Smart Card Research and Applications
Provably Secure Partially Blind Signatures
CRYPTO '00 Proceedings of the 20th Annual International Cryptology Conference on Advances in Cryptology
An Efficient System for Non-transferable Anonymous Credentials with Optional Anonymity Revocation
EUROCRYPT '01 Proceedings of the International Conference on the Theory and Application of Cryptographic Techniques: Advances in Cryptology
Routing Through the Mist: Privacy Preserving Communication in Ubiquitous Computing Environments
ICDCS '02 Proceedings of the 22 nd International Conference on Distributed Computing Systems (ICDCS'02)
The Performance Measurement of Cryptographic Primitives on Palm Devices
ACSAC '01 Proceedings of the 17th Annual Computer Security Applications Conference
Context-aware privacy protection with profile management
WMASH '06 Proceedings of the 4th international workshop on Wireless mobile applications and services on WLAN hotspots
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In a pervasive computing environment, users interact with many smart devices or service providers (SPs) to obtain some useful services from them. These SPs can be either genuine or malicious. As a result, users privacy is at a greater risk, as they are prone to revealing their location, identity and transactions information to such SPs. On the other hand, user authentication is also required for SPs to provide service access control to only authorized users. In order to protect users privacy, they must be allowed to have anonymous interactions with SPs. But, authenticating and authorizing an anonymous user becomes a challenging task. In this paper, we propose a simple and efficient scheme that allows users to anonymously interact with SPs and the SPs can effectively authenticate and authorize the users based on the anonymous information submitted by the users.