SABE : a Selective Attribute-Based Encryption for an efficient threshold multi-level access control

Nesrine Kaaniche (1, 2, 3) , Maryline Laurent (4, 1, 2, 3)

1 TSP - RST - Département Réseaux et Services de Télécommunications
2 SAMOVAR - Services répartis, Architectures, MOdélisation, Validation, Administration des Réseaux
3 CNRS - Centre National de la Recherche Scientifique
4 R3S-SAMOVAR - Réseaux, Systèmes, Services, Sécurité

With the emergence of decentralized systems and distributed infrastructures, access control to outsourced data becomes more complex, as it should be flexible and distinguishable among users with different access rights. In this paper, we present SABE, a Selective Attribute-based Encryption scheme, as a new threshold multilevel access control mechanism based on an original use of attribute based encryption schemes. Our proposal is multi-fold. First, it ensures fine-grained access control, supporting multi-security levels with respect to different granted access privileges for each outsourced data file. Second, SABE is proven secure against selective non-adaptive chosen ciphertext attacks in the generic group model. Third, our construction is proven to provide efficient processing and communication complexities, compared to most closely related schemes

Mots clés: Ciphertext-policy attribute-based encryption; Multi-level access control; Data secrecy; Flexible access policies

Domaines: Cryptographie et sécurité [cs.CR]; Réseaux et télécommunications [cs.NI]

Nesrine Kaaniche, Maryline Laurent. SABE : a Selective Attribute-Based Encryption for an efficient threshold multi-level access control. SECRYPT 2018: 15th International Conference on Security and Cryptography, Jul 2018, Porto, Portugal. pp.155 - 167, ⟨10.5220/0006855501550167⟩. ⟨hal-01850387⟩