Sign In

Communications of the ACM

Contributed articles

Cryptography Miracles, Secure Auctions, Matching Problem Verification

auction mallet


In this article, we extend the methods of Rabin et al.10,11 in a major way and provide a solution to the long-standing important problem of preventing collusion in second-price (Vickrey) auctions. The new tools presented are deniable revelation of a secret value and uncontrollable deniable bidding. In Rabin et al.,10,11 new highly efficient methods for proving correctness of announced results of computations were introduced. These proofs completely conceal input values and intermediate results of the computation. One application was to enable an Auctioneer to announce outcome of a sealed bid auction and provide verification of correctness of the outcome, while keeping bid values information-theoretically secret. We quickly survey these methods for completeness of the discussion and because of their wide applicability. Another example of an application is to prove to participants of a stable matching process such as the assignment residents to hospitals, of the correctness of the announced assignment without revealing any preferences of residents with respect to hospitals and vice-versa.


No entries found

Log in to Read the Full Article

Sign In

Sign in using your ACM Web Account username and password to access premium content if you are an ACM member, Communications subscriber or Digital Library subscriber.

Need Access?

Please select one of the options below for access to premium content and features.

Create a Web Account

If you are already an ACM member, Communications subscriber, or Digital Library subscriber, please set up a web account to access premium content on this site.

Join the ACM

Become a member to take full advantage of ACM's outstanding computing information resources, networking opportunities, and other benefits.

Subscribe to Communications of the ACM Magazine

Get full access to 50+ years of CACM content and receive the print version of the magazine monthly.

Purchase the Article

Non-members can purchase this article or a copy of the magazine in which it appears.
Sign In for Full Access
» Forgot Password? » Create an ACM Web Account