Authors:
Guerra Ruy
and
Ribeiro Leonardo
Affiliation:
Federal University, Brazil
Keyword(s):
Safe Reverse Auction Protocol, DSA Digital Certificate, Hash Chain, Keys Exchange, Signature Verification, Collusive Shill Bidding, Sniping.
Related
Ontology
Subjects/Areas/Topics:
Cryptographic Techniques and Key Management
;
e-Commerce Protocols and Micropayment Schemes
;
Information and Systems Security
;
Public Key Crypto Applications
Abstract:
Many secure auction protocols were created. BJK (Byoungcheon Lee, Kwangjo Kim e Joongsoo Ma 2001) defined an efficient protocol for English auctions that can be used also for Reverse auctions. Chung (Yu Fang Chung 2008) created an improvement of BJK, however there are still some security faults that can be explored by attackers in these two protocols. In this article, we define a protocol based on BJK that is an improvement of it with the addition of security’s treatment to attacks of Collusive Shill Bidding e Sniping.