Weighted Attribute-Based Encryption with Parallelized Decryption

Alexandru Ionita

Paper 2022/605

Weighted Attribute-Based Encryption with Parallelized Decryption

Alexandru Ionita

Abstract

Unlike conventional ABE systems, which support Boolean attributes (with only 2 states: "1" and "0", or "Present" and "Absent"), weighted Attribute-based encryption schemes also support numerical values attached to attributes, and each terminal node of the access structure contains a threshold for a minimum weight. We propose a weighted ABE system, with access policy of logarithmic expansion, by dividing each weighted attribute in sub-attributes. On top of that, we show that the decryption can be parallelized, leading to a notable improvement in running time, compared to the serial version.

Metadata

Available format(s): PDF
Category: Public-key cryptography
Publication info: Published elsewhere. Major revision. SECRYPT, 2022, to appear
Keywords: attribute-based encryption public-key cryptography secret sharing bilinear maps access control
Contact author(s): alexandru ionita @ info uaic ro
History: 2022-05-23: received
Short URL: https://ia.cr/2022/605
License: CC BY

BibTeX

@misc{cryptoeprint:2022/605,
      author = {Alexandru Ionita},
      title = {Weighted Attribute-Based Encryption with Parallelized Decryption},
      howpublished = {Cryptology ePrint Archive, Paper 2022/605},
      year = {2022},
      note = {\url{https://eprint.iacr.org/2022/605}},
      url = {https://eprint.iacr.org/2022/605}
}