Iolus: a framework for scalable secure multicasting
SIGCOMM '97 Proceedings of the ACM SIGCOMM '97 conference on Applications, technologies, architectures, and protocols for computer communication
The LSD Broadcast Encryption Scheme
CRYPTO '02 Proceedings of the 22nd Annual International Cryptology Conference on Advances in Cryptology
Secure Integration of Asymmetric and Symmetric Encryption Schemes
CRYPTO '99 Proceedings of the 19th Annual International Cryptology Conference on Advances in Cryptology
A survey of key management for secure group communication
ACM Computing Surveys (CSUR)
Attribute-based encryption for fine-grained access control of encrypted data
Proceedings of the 13th ACM conference on Computer and communications security
Secure attribute-based systems
Proceedings of the 13th ACM conference on Computer and communications security
Does internet media traffic really follow Zipf-like distribution?
Proceedings of the 2007 ACM SIGMETRICS international conference on Measurement and modeling of computer systems
Ciphertext-Policy Attribute-Based Encryption
SP '07 Proceedings of the 2007 IEEE Symposium on Security and Privacy
Attribute-based encryption with non-monotonic access structures
Proceedings of the 14th ACM conference on Computer and communications security
Provably secure ciphertext policy ABE
Proceedings of the 14th ACM conference on Computer and communications security
A content-driven access control system
Proceedings of the 7th symposium on Identity and trust on the Internet
Bounded Ciphertext Policy Attribute Based Encryption
ICALP '08 Proceedings of the 35th international colloquium on Automata, Languages and Programming, Part II
Identity-based encryption with efficient revocation
Proceedings of the 15th ACM conference on Computer and communications security
Provably secure and efficient bounded ciphertext policy attribute based encryption
Proceedings of the 4th International Symposium on Information, Computer, and Communications Security
Collusion resistant broadcast encryption with short ciphertexts and private keys
CRYPTO'05 Proceedings of the 25th annual international conference on Advances in Cryptology
Fuzzy identity-based encryption
EUROCRYPT'05 Proceedings of the 24th annual international conference on Theory and Applications of Cryptographic Techniques
Multicast group behavior in the Internet's multicast backbone (MBone)
IEEE Communications Magazine
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Key revocation is one of the most challenging and open issues in attribute-based encryption (ABE). The previous revocable ABE schemes feature a mechanism that revokes the attribute key periodically without any consideration of the user membership associated with the attribute. Thus, non-revoked users are enforced to access the key authority periodically to receive keying materials in order to update the current key. This is due to the fact that the revocation is done only on the attribute level, which results in security and scalability problems. In this paper, we propose a fine-grained user revocation scheme without affecting any non-revoked users who share the same attributes in ciphertext-policy ABE; it does not require the users to access the key authority and to update keys periodically. The proposed scheme improves the efficiency compared with previous revocable schemes and enhances the security in terms of the backward/forward secrecy on any membership changes in the ciphertext-policy ABE system. Copyright © 2011 John Wiley & Sons, Ltd.