OpenFHE: Open-Source Fully Homomorphic Encryption Library

Ahmad Al Badawi; Andreea Alexandru; Jack Bates; Flavio Bergamaschi; David Bruce Cousins; Saroja Erabelli; Nicholas Genise; Shai Halevi; Hamish Hunt; Andrey Kim; Yongwoo Lee; Zeyu Liu; Daniele Micciancio; Carlo Pascoe; Yuriy Polyakov; Ian Quah; Saraswathy R.V.; Kurt Rohloff; Jonathan Saylor; Dmitriy Suponitsky; Matthew Triplett; Vinod Vaikuntanathan; Vincent Zucca

Paper 2022/915

OpenFHE: Open-Source Fully Homomorphic Encryption Library

Ahmad Al Badawi, Duality Technologies

Andreea Alexandru, Duality Technologies

Jack Bates, Duality Technologies

Flavio Bergamaschi, Intel Corporation

David Bruce Cousins, Duality Technologies

Saroja Erabelli, Duality Technologies

Nicholas Genise, Duality Technologies

Shai Halevi, Algorand Foundation

Hamish Hunt, Intel Corporation

Andrey Kim, Samsung Advanced Institute of Technology

Yongwoo Lee, Samsung Advanced Institute of Technology

Zeyu Liu, Duality Technologies

Daniele Micciancio, University of California, San Diego, Duality Technologies

Carlo Pascoe, Duality Technologies

Yuriy Polyakov, Duality Technologies

Ian Quah, Duality Technologies

Saraswathy R.V., Duality Technologies

Kurt Rohloff, Duality Technologies

Jonathan Saylor, Duality Technologies

Dmitriy Suponitsky, Duality Technologies

Matthew Triplett, Duality Technologies

Vinod Vaikuntanathan, Massachusets Institute of Technology, Duality Technologies

Vincent Zucca, DALI, Universite de Perpignan Via Domitia, LIRMM, University of Montpellier

Abstract

Fully Homomorphic Encryption (FHE) is a powerful cryptographic primitive that enables performing computations over encrypted data without having access to the secret key. We introduce OpenFHE, a new open-source FHE software library that incorporates selected design ideas from prior FHE projects, such as PALISADE, HElib, and HEAAN, and includes several new design concepts and ideas. The main new design features can be summarized as follows: (1) we assume from the very beginning that all implemented FHE schemes will support bootstrapping and scheme switching; (2) OpenFHE supports multiple hardware acceleration backends using a standard Hardware Abstraction Layer (HAL); (3) OpenFHE includes both user-friendly modes, where all maintenance operations, such as modulus switching, key switching, and bootstrapping, are automatically invoked by the library, and compiler-friendly modes, where an external compiler makes these decisions. This paper focuses on high-level description of OpenFHE design, and the reader is pointed to external OpenFHE references for a more detailed/technical description of the software library.

Note: Adds a brief description of major OpenFHE updates from Sep 2022 to Mar 2024

Metadata

Available format(s): PDF
Category: Implementation
Publication info: Published elsewhere. Major revision. WAHC 2022 – 10th Workshop on Encrypted Computing & Applied Homomorphic Cryptography
Keywords: Fully Homomorphic Encryption Bootstrapping BGV BFV CKKS HEAAN DM FHEW CGGI TFHE Hardware Acceleration
Contact author(s): ypolyakov @ openfhe org
krohloff @ openfhe org
History: 2024-03-12: last of 4 revisions; 2022-07-14: received; See all versions
Short URL: https://ia.cr/2022/915
License: CC BY

BibTeX

@misc{cryptoeprint:2022/915,
      author = {Ahmad Al Badawi and Andreea Alexandru and Jack Bates and Flavio Bergamaschi and David Bruce Cousins and Saroja Erabelli and Nicholas Genise and Shai Halevi and Hamish Hunt and Andrey Kim and Yongwoo Lee and Zeyu Liu and Daniele Micciancio and Carlo Pascoe and Yuriy Polyakov and Ian Quah and Saraswathy R.V. and Kurt Rohloff and Jonathan Saylor and Dmitriy Suponitsky and Matthew Triplett and Vinod Vaikuntanathan and Vincent Zucca},
      title = {{OpenFHE}: Open-Source Fully Homomorphic Encryption Library},
      howpublished = {Cryptology {ePrint} Archive, Paper 2022/915},
      year = {2022},
      url = {https://eprint.iacr.org/2022/915}
}