Non-Malleable Obfuscation

Ran Canetti; Mayank Varia

Paper 2008/495

Non-Malleable Obfuscation

Ran Canetti and Mayank Varia

Abstract

Existing definitions of program obfuscation do not rule out malleability attacks, where an adversary that sees an obfuscated program is able to generate another (potentially obfuscated) program that is related to the original one in some way. We formulate two natural flavors of non-malleability requirements for program obfuscation, and show that they are incomparable in general. We also construct non-malleable obfuscators of both flavors for some program families of interest. Some of our constructions are in the Random Oracle model, whereas another one is in the common reference string model. We also define the notion of verifiable obfuscation which is of independent interest.

Metadata

Available format(s): PDF
Category: Foundations
Publication info: Published elsewhere. Unknown where it was published
Keywords: obfuscation non-malleability
Contact author(s): varia @ csail mit edu
History: 2008-12-02: received
Short URL: https://ia.cr/2008/495
License: CC BY

BibTeX

@misc{cryptoeprint:2008/495,
      author = {Ran Canetti and Mayank Varia},
      title = {Non-Malleable Obfuscation},
      howpublished = {Cryptology {ePrint} Archive, Paper 2008/495},
      year = {2008},
      url = {https://eprint.iacr.org/2008/495}
}