Obfuscating Simple Functionalities from Knowledge Assumptions

descriptionPublicationkeyboard_double_arrow_right Part of book or chapter of book , Conference object , Article 01 Jan 2019 France English Publisher:Springer International PublishingFunded by:EC | FENTEC, EC | aSCEND

Authors: Beullens, Ward; Wee, Hoeteck;

doi: 10.1007/978-3-030-17259-6_9 , 10.5281/zenodo.3405950 , 10.5281/zenodo.3405951

Obfuscating Simple Functionalities from Knowledge Assumptions

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Abstract

This paper shows how to obfuscate several simple functionalities from a new Knowledge of OrthogonALity Assumption (KOALA) in cyclic groups which is shown to hold in the Generic Group Model. Specifically, we give simpler and stronger security proofs for obfuscation schemes for point functions, general-output point functions and pattern matching with wildcards. We also revisit the work of Bishop et al. (CRYPTO 2018) on obfuscating the pattern matching with wildcards functionality.

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France

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Keywords

Obfuscation, VBB, Pattern matching, Generic group, [INFO.INFO-CR] Computer Science [cs]/Cryptography and Security [cs.CR]

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