Tampere University of Technology

TUTCRIS Research Portal

The Lord of the shares: Combining attribute-based encryption and searchable encryption for flexible data sharing

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review


Original languageEnglish
Title of host publicationProceedings of the 34th ACM/SIGAPP Symposium on Applied Computing
Number of pages10
ISBN (Print)9781450359337
Publication statusPublished - 2019
Publication typeA4 Article in a conference publication
EventAnnual ACM Symposium on Applied Computing - Limassol, Cyprus
Duration: 8 Apr 201912 Apr 2019


ConferenceAnnual ACM Symposium on Applied Computing


Secure cloud storage is considered one of the most important issues that both businesses and end-users are considering before moving their private data to the cloud. Lately, we have seen some interesting approaches that are based either on the promising concept of Symmetric Searchable Encryption (SSE) or on the well-studied field of Attribute-Based Encryption (ABE). In the first case, researchers are trying to design protocols where users' data will be protected from both internal and external attacks without paying the necessary attention to the problem of user revocation. On the other hand, in the second case existing approaches address the problem of revocation. However, the overall efficiency of these systems is compromised since the proposed protocols are solely based on ABE schemes and the size of the produced ciphertexts and the time required to decrypt grows with the complexity of the access formula. In this paper, we propose a protocol that combines both SSE and ABE in a way that the main advantages of each scheme are used. The proposed protocol allows users to directly search over encrypted data by using an SSE scheme while the corresponding symmetric key that is needed for the decryption is protected via a Ciphertext-Policy Attribute-Based Encryption scheme.

ASJC Scopus subject areas


  • Access Control, Attribute-Based Encryption, Cloud Security, Hybrid Encryption, Policies, Storage Protection, Symmetric Searchable Encryption

Publication forum classification

Field of science, Statistics Finland