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ICDCS
1998
IEEE
14 years 22 days ago
A Mechanism for Establishing Policies for Electronic Commerce
This paper introduces a mechanism for establishing policies for electronic commerce in a uni ed and secure manner. A commercial policy can be viewed as the embodiment of a contrac...
Naftaly H. Minsky, Victoria Ungureanu
SIGCOMM
2006
ACM
14 years 2 months ago
SybilGuard: defending against sybil attacks via social networks
Peer-to-peer and other decentralized, distributed systems are known to be particularly vulnerable to sybil attacks. In a sybil attack, a malicious user obtains multiple fake ident...
Haifeng Yu, Michael Kaminsky, Phillip B. Gibbons, ...
PODC
2004
ACM
14 years 1 months ago
Completely fair SFE and coalition-safe cheap talk
Secure function evaluation (SFE) enables a group of players, by themselves, to evaluate a function on private inputs as securely as if a trusted third party had done it for them. ...
Matt Lepinski, Silvio Micali, Chris Peikert, Abhi ...
IPPS
2007
IEEE
14 years 2 months ago
Gossip-based Reputation Aggregation for Unstructured Peer-to-Peer Networks
: Peer-to-Peer (P2P) reputation systems are needed to evaluate the trustworthiness of participating peers and to combat selfish and malicious peer behaviors. The reputation system ...
Runfang Zhou, Kai Hwang
CCS
2006
ACM
14 years 6 days ago
Safety and consistency in policy-based authorization systems
In trust negotiation and other distributed proving systems, networked entities cooperate to form proofs that are justified by collections of certified attributes. These attributes...
Adam J. Lee, Marianne Winslett