Attribute-based encryption for fine-grained access control of encrypted data
Proceedings of the 13th ACM conference on Computer and communications security
Ciphertext-Policy Attribute-Based Encryption
SP '07 Proceedings of the 2007 IEEE Symposium on Security and Privacy
Threshold Attribute-Based Signatures and Their Application to Anonymous Credential Systems
AFRICACRYPT '09 Proceedings of the 2nd International Conference on Cryptology in Africa: Progress in Cryptology
Attribute-based signature and its applications
ASIACCS '10 Proceedings of the 5th ACM Symposium on Information, Computer and Communications Security
Efficient ring signatures without random oracles
PKC'07 Proceedings of the 10th international conference on Practice and theory in public-key cryptography
Fully anonymous group signatures without random oracles
ASIACRYPT'07 Proceedings of the Advances in Crypotology 13th international conference on Theory and application of cryptology and information security
Efficient non-interactive proof systems for bilinear groups
EUROCRYPT'08 Proceedings of the theory and applications of cryptographic techniques 27th annual international conference on Advances in cryptology
Structure-preserving signatures and commitments to group elements
CRYPTO'10 Proceedings of the 30th annual conference on Advances in cryptology
Efficient traceable signatures in the standard model
Theoretical Computer Science
CT-RSA'11 Proceedings of the 11th international conference on Topics in cryptology: CT-RSA 2011
Efficient attribute-based signatures for non-monotone predicates in the standard model
PKC'11 Proceedings of the 14th international conference on Practice and theory in public key cryptography conference on Public key cryptography
Efficient identity-based encryption without random oracles
EUROCRYPT'05 Proceedings of the 24th annual international conference on Theory and Applications of Cryptographic Techniques
EUROCRYPT'10 Proceedings of the 29th Annual international conference on Theory and Applications of Cryptographic Techniques
Perfect non-interactive zero knowledge for NP
EUROCRYPT'06 Proceedings of the 24th annual international conference on The Theory and Applications of Cryptographic Techniques
Short attribute-based signatures for threshold predicates
CT-RSA'12 Proceedings of the 12th conference on Topics in Cryptology
Combined public-key schemes: the case of ABE and ABS
ProvSec'12 Proceedings of the 6th international conference on Provable Security
CT-RSA'13 Proceedings of the 13th international conference on Topics in Cryptology
SA3: Self-adaptive anonymous authentication for dynamic authentication policies
Future Generation Computer Systems
Flexible multi-authority attribute-based signature schemes for expressive policy
Mobile Information Systems - Advances in Network-Based Information Systems
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An attribute-based signature with respect to a signing policy, chosen ad-hoc by the signer, convinces the verifier that the signer holds a subset of attributes satisfying that signing policy. The verifier must obtain no other information about the identity of the signer or the attributes he holds. This primitive has many applications in real scenarios requiring both authentication and anonymity/privacy properties. We propose in this paper the first attribute-based signature scheme satisfying at the same time the following properties: (1) it admits general signing policies, (2) it is proved secure against fully adaptive adversaries, in the standard model, and (3) the number of elements in a signature depends only on the size of the signing policy. Furthermore, our scheme enjoys the additional property of revocability: an external judge can break the anonymity of a signature, when necessary. This property may be very interesting in real applications where authorities are unwilling to allow full anonymity of users.