A ciphertext-policy attribute-based encryption scheme with optimized ciphertext size and fast decryption
Author | Malluhi, Qutaibah M. |
Author | Shikfa, Abdullatif |
Author | Trinh, Viet Cuong |
Available date | 2020-10-15T10:38:43Z |
Publication Date | 2017 |
Publication Name | ASIA CCS 2017 - Proceedings of the 2017 ACM Asia Conference on Computer and Communications Security |
Resource | Scopus |
Abstract | We address the problem of ciphertext-policy attribute-based encryption with fine access control, a cryptographic primitive which has many concrete application scenarios such as Pay-TV, e-Health, Cloud Storage and so on. In this context we improve on previous LSSS based techniques by building on previous work of Hohenberger andWaters at PKC'13 and proposing a construction that achi- eves ciphertext size linear in the minimum between the size of the boolean access formula and the number of its clauses. Our construction also supports fast decryption. We also propose two interesting extensions: the first one aims at reducing storage and computation at the user side and is useful in the context of lightweight devices or devices using a cloud operator. The second proposes the use of multiple authorities to mitigate key escrow by the authority. |
Language | en |
Publisher | Association for Computing Machinery, Inc |
Subject | Ciphertext-policy attribute-based encryption DNF access policy Fast decryption LSSS access policy Multi-authority |
Type | Conference |
Pagination | 230-240 |
Files in this item
Files | Size | Format | View |
---|---|---|---|
There are no files associated with this item. |
This item appears in the following Collection(s)
-
Computer Science & Engineering [2402 items ]