Random oracles are practical: a paradigm for designing efficient protocols
CCS '93 Proceedings of the 1st ACM conference on Computer and communications security
CRYPTO '93 Proceedings of the 13th annual international cryptology conference on Advances in cryptology
Public Key Trace and Revoke Scheme Secure against Adaptive Chosen Ciphertext Attack
PKC '03 Proceedings of the 6th International Workshop on Theory and Practice in Public Key Cryptography: Public Key Cryptography
Fully CCA2 secure identity based broadcast encryption without random oracles
Information Processing Letters
Identity-based broadcast encryption with constant size ciphertexts and private keys
ASIACRYPT'07 Proceedings of the Advances in Crypotology 13th international conference on Theory and application of cryptology and information security
Multi-receiver identity-based key encapsulation with shortened ciphertext
INDOCRYPT'06 Proceedings of the 7th international conference on Cryptology in India
Efficient multi-receiver identity-based encryption and its application to broadcast encryption
PKC'05 Proceedings of the 8th international conference on Theory and Practice in Public Key Cryptography
Collusion resistant broadcast encryption with short ciphertexts and private keys
CRYPTO'05 Proceedings of the 25th annual international conference on Advances in Cryptology
Hierarchical identity based encryption with constant size ciphertext
EUROCRYPT'05 Proceedings of the 24th annual international conference on Theory and Applications of Cryptographic Techniques
Pairing'07 Proceedings of the First international conference on Pairing-Based Cryptography
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Delerablée proposed the first identity-based broadcast encryption scheme with constant size ciphertexts and private keys in [7]. But, the scheme was proved to be secure in the selective identity security model. We prove the scheme is secure in the full security model under an interactive assumption.