Abstract

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.

Keywords

Secure Computation Oblivious RAM Garbled Circuits 

Copyright information

© International Association for Cryptologic Research 2013

Authors and Affiliations

  • Steve Lu
    • 1
  • Rafail Ostrovsky
    • 2
  1. 1.Stealth Software Technologies, Inc.USA
  2. 2.Department of Computer Science and Department of MathematicsUCLAUSA

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