Abstract. We consider the problem of comparing two encrypted numbers and its extension -transferring one of the two secrets, depending on the result of comparison. We show how to efficiently apply our solutions to practical settings, such as auctions with the semi-honest auctioneer, proxy selling, etc. We propose a new primitive, Conditional Encrypted Mapping, which captures common security properties of one round protocols in a variety of settings, which may be of independent interest.
Blake and Kolesnikov REF proposed and applied efficient solutions to practical settings, such as secure auctions, using a new primitive conditional encrypted mapping.
Conditional Encrypted Mapping and Comparing Encrypted Numbers
In Financial Cryptography and Data Security Conference 2006, volume ?? of Lecture Notes in Computer Science
Computer Science