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Erschienen in:
2013 | OriginalPaper | Buchkapitel
How to Garble RAM Programs?
verfasst von : Steve Lu, Rafail Ostrovsky
Erschienen in: Advances in Cryptology – EUROCRYPT 2013
Verlag: Springer Berlin Heidelberg
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Assuming solely the existence of one-way functions, we show how to construct Garbled RAM Programs (GRAM) where its size only depends on fixed polynomial in the security parameter times the program running time. We stress that we avoid converting the RAM programs into circuits. As an example, our techniques implies the first garbled
binary search
program (searching over sorted encrypted data stored in a cloud) which is poly-logarithmic in the data size instead of linear. Our result requires the existence of one-way function and enjoys the same non-interactive properties as Yao’s original garbled circuits.