Concealing complex policies with hidden credentials
Proceedings of the 11th ACM conference on Computer and communications security
Attributed Based Access Control (ABAC) for Web Services
ICWS '05 Proceedings of the IEEE International Conference on Web Services
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
Provably secure ciphertext policy ABE
Proceedings of the 14th ACM conference on Computer and communications security
A Brief Look at Pairings Based Cryptography
FOCS '07 Proceedings of the 48th Annual IEEE Symposium on Foundations of Computer Science
Short Signatures Without Random Oracles and the SDH Assumption in Bilinear Groups
Journal of Cryptology
Bounded Ciphertext Policy Attribute Based Encryption
ICALP '08 Proceedings of the 35th international colloquium on Automata, Languages and Programming, Part II
Lower bounds for discrete logarithms and related problems
EUROCRYPT'97 Proceedings of the 16th annual international conference on Theory and application of cryptographic techniques
Multi-authority attribute based encryption
TCC'07 Proceedings of the 4th conference on Theory of cryptography
Fuzzy identity-based encryption
EUROCRYPT'05 Proceedings of the 24th annual international conference on Theory and Applications of Cryptographic Techniques
Property-Based broadcast encryption for multi-level security policies
ICISC'05 Proceedings of the 8th international conference on Information Security and Cryptology
Decentralizing attribute-based encryption
EUROCRYPT'11 Proceedings of the 30th Annual international conference on Theory and applications of cryptographic techniques: advances in cryptology
Fully secure multi-authority ciphertext-policy attribute-based encryption without random oracles
ESORICS'11 Proceedings of the 16th European conference on Research in computer security
Hidden access structure ciphertext policy attribute based encryption with constant length ciphertext
ADCONS'11 Proceedings of the 2011 international conference on Advanced Computing, Networking and Security
A general construction for multi-authority attribute-based encryption
AICI'12 Proceedings of the 4th international conference on Artificial Intelligence and Computational Intelligence
Flexible multi-authority attribute-based signature schemes for expressive policy
Mobile Information Systems - Advances in Network-Based Information Systems
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Ciphertext-Policy Attribute-Based Encryption (CP-ABE) allows to encrypt data under an access policy, specified as a logical combination of attributes. Such ciphertexts can be decrypted by anyone with a set of attributes that fits the policy. In this paper, we introduce the concept of Distributed Attribute-Based Encryption (DABE), where an arbitrary number of parties can be present to maintain attributes and their corresponding secret keys. This is in stark contrast to the classic CP-ABE schemes, where all secret keys are distributed by one central trusted party. We provide the first construction of a DABE scheme; the construction is very efficient, as it requires only a constant number of pairing operations during encryption and decryption.