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.
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Blake, I.F., Kolesnikov, V. (2006). Conditional Encrypted Mapping and Comparing Encrypted Numbers. In: Di Crescenzo, G., Rubin, A. (eds) Financial Cryptography and Data Security. FC 2006. Lecture Notes in Computer Science, vol 4107. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11889663_18
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DOI: https://doi.org/10.1007/11889663_18
Publisher Name: Springer, Berlin, Heidelberg
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