Networks without user observability
Computers and Security
CCS '94 Proceedings of the 2nd ACM Conference on Computer and communications security
Anonymous credit cards and their collusion analysis
IEEE/ACM Transactions on Networking (TON)
ISDN-MIXes: Untraceable Communication with Small Bandwidth Overhead
Kommunikation in Verteilten Systemen, Grundlagen, Anwendungen, Betrieb, GI/ITG-Fachtagung
Modeling Cryptographic Protocols and Their Collusion Analysis
Proceedings of the First International Workshop on Information Hiding
MIXes in Mobile Communication Systems: Location Management with Privacy
Proceedings of the First International Workshop on Information Hiding
The use of communications networks to increase personal privacy
INFOCOM '95 Proceedings of the Fourteenth Annual Joint Conference of the IEEE Computer and Communication Societies (Vol. 2)-Volume - Volume 2
Mental poker game based on a bit commitment scheme through network
Computer Networks: The International Journal of Computer and Telecommunications Networking
Secure and efficient group key management with shared key derivation
Computer Standards & Interfaces
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In earlier work we have formulated a collusion problem that determines whether it is possible for a set of colluders to collectively discover a target set of information, starting from their initial knowledge, and have presented a complete solution for a special case of the problem. In this paper we present an algorithm that solves the general case. Given a collusion problem the algorithm determines whether it has a solution, and if it does, computes one. A solution to the collusion problem is a method with which the colluders can uncover the hidden information. Communications protocols that employ cryptographic techniques are increasingly used to protect privacy as well as to communicate. A cryptographic protocol defines a process by which information is transferred among some users while hidden from others. The algorithm presented here can be used to determine whether a subset of protocol users can discover, during or after the protocol's execution, the information that is designed to be hidden from them.