Updating attribute in CP-ABE: A New Approach

Nishant Doshi; Devesh Jinwala

Paper 2012/496

Updating attribute in CP-ABE: A New Approach

Nishant Doshi and Devesh Jinwala

Abstract

In Ciphertext-Policy Attribute Based Encryption (CP-ABE), attributes are attached to the user‟s secret key and access policy is at-tached to the ciphertext. If attributes in the secret key of a user satisfy the policy then only the genuine user can decrypt the ciphertext. How-ever, such scenario also necessitates periodic updating of the secret key with the changing attributes. According to our observations, the existing attempts at doing so are not efficient. In this paper, we propose a newer approach to add, update or delete the value of particular attribute effi-ciently without the knowledge of the other attributes.

Metadata

Available format(s): PDF
Category: Public-key cryptography
Publication info: Published elsewhere. Unknown where it was published
Keywords: Attribute Attribute Based Encryption Dynamic Attributes Network Security
Contact author(s): doshinikki2004 @ gmail com
History: 2012-09-03: received
Short URL: https://ia.cr/2012/496
License: CC BY

BibTeX

@misc{cryptoeprint:2012/496,
      author = {Nishant Doshi and Devesh Jinwala},
      title = {Updating attribute in {CP}-{ABE}: A New Approach},
      howpublished = {Cryptology {ePrint} Archive, Paper 2012/496},
      year = {2012},
      url = {https://eprint.iacr.org/2012/496}
}