Modern Family: A Revocable Hybrid Encryption Scheme Based on Attribute-Based Encryption, Symmetric Searchable Encryption and SGX

Bakas, A. and Michalas, A. 2019. Modern Family: A Revocable Hybrid Encryption Scheme Based on Attribute-Based Encryption, Symmetric Searchable Encryption and SGX. 15th EAI International Conference on Security and Privacy in Communication Networks (SecureComm’19). Orlando, United States 25 Jul - 23 Oct 2019 Springer.

TitleModern Family: A Revocable Hybrid Encryption Scheme Based on Attribute-Based Encryption, Symmetric Searchable Encryption and SGX
AuthorsBakas, A. and Michalas, A.
TypeConference paper
Abstract

Secure cloud storage is considered as one of the most important issues that both businesses and end-users take into account 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. 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 hybrid encryption scheme that combines both SSE and ABE by utilizing the advantages of both these techniques. In contrast to many approaches, we design a revocation mechanism that is completely separated from the ABE scheme and solely based on the functionality offered by SGX.

KeywordsAccess Control
Attribute-Based Encryption
Cloud Security
Hybrid Encryption
Policies
Storage Protection
Symmetric Searchable Encryption
Year2019
Conference15th EAI International Conference on Security and Privacy in Communication Networks (SecureComm’19)
PublisherSpringer
Publication dates
Published23 Oct 2019
Web address (URL)https://eprint.iacr.org/2019/682.pdf

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Under embargo until 23 Oct 2020

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