CRYPTO '93 Proceedings of the 13th annual international cryptology conference on Advances in cryptology
Identity-Based Encryption from the Weil Pairing
CRYPTO '01 Proceedings of the 21st Annual International Cryptology Conference on Advances in Cryptology
Revocation and Tracing Schemes for Stateless Receivers
CRYPTO '01 Proceedings of the 21st Annual International Cryptology Conference on Advances in Cryptology
The LSD Broadcast Encryption Scheme
CRYPTO '02 Proceedings of the 22nd Annual International Cryptology Conference on Advances in Cryptology
Hierarchical ID-Based Cryptography
ASIACRYPT '02 Proceedings of the 8th International Conference on the Theory and Application of Cryptology and Information Security: Advances in Cryptology
Proceedings of the 11th ACM conference on Computer and communications security
Direct chosen ciphertext security from identity-based techniques
Proceedings of the 12th ACM conference on Computer and communications security
A forward-secure public-key encryption scheme
EUROCRYPT'03 Proceedings of the 22nd international conference on Theory and applications of cryptographic techniques
ASIACRYPT'05 Proceedings of the 11th international conference on Theory and Application of Cryptology and Information Security
Improved efficiency for CCA-secure cryptosystems built using identity-based encryption
CT-RSA'05 Proceedings of the 2005 international conference on Topics in Cryptology
Searchable encryption revisited: consistency properties, relation to anonymous IBE, and extensions
CRYPTO'05 Proceedings of the 25th annual international conference on Advances in Cryptology
Collusion resistant broadcast encryption with short ciphertexts and private keys
CRYPTO'05 Proceedings of the 25th annual international conference on Advances in Cryptology
Efficient identity-based encryption without random oracles
EUROCRYPT'05 Proceedings of the 24th annual international conference on Theory and Applications of Cryptographic Techniques
Hierarchical identity based encryption with constant size ciphertext
EUROCRYPT'05 Proceedings of the 24th annual international conference on Theory and Applications of Cryptographic Techniques
Anonymous hierarchical identity-based encryption (without random oracles)
CRYPTO'06 Proceedings of the 26th annual international conference on Advances in Cryptology
Security analysis of the strong diffie-hellman problem
EUROCRYPT'06 Proceedings of the 24th annual international conference on The Theory and Applications of Cryptographic Techniques
Conditional Proxy Broadcast Re-Encryption
ACISP '09 Proceedings of the 14th Australasian Conference on Information Security and Privacy
Conjunctive Broadcast and Attribute-Based Encryption
Pairing '09 Proceedings of the 3rd International Conference Palo Alto on Pairing-Based Cryptography
Direct chosen-ciphertext secure hierarchical ID-based encryption schemes
EuroPKI'07 Proceedings of the 4th European conference on Public Key Infrastructure: theory and practice
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We introduce a primitive called Hierarchical Identity- Coupling Broadcast Encryption (HICBE) that can be used for constructing efficient collusion-resistant public-key broadcast encryption schemes with extended properties such as forward-security and keyword- searchability. Our forward-secure broadcast encryption schemes have small ciphertext and private key sizes, in particular, independent of the number of users in the system. One of our best two constructions achieves ciphertexts of constant size and user private keys of size O(log2T), where T is the total number of time periods, while another achieves both ciphertexts and user private keys of size O(logT). These performances are comparable to those of the currently best single-user forward-secure public-key encryption scheme, while our schemes are designed for broadcasting to arbitrary sets of users. As a side result, we also formalize the notion of searchable broadcast encryption, which is a new generalization of public key encryption with keyword search. We then relate it to anonymous HICBE and present a construction with polylogarithmic performance.