Abstract
We provide a general framework for constructing identity-based and broadcast encryption systems. In particular, we construct a general encryption system called spatial encryption from which many systems with a variety of properties follow. The ciphertext size in all these systems is independent of the number of users involved and is just three group elements. Private key size grows with the complexity of the system. One application of these results gives the first broadcast HIBE system with short ciphertexts. Broadcast HIBE solves a natural problem having to do with identity-based encrypted email. © 2008 Springer Berlin Heidelberg.
Cite
CITATION STYLE
Boneh, D., & Hamburg, M. (2008). Generalized identity based and broadcast encryption schemes. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 5350 LNCS, pp. 455–470). https://doi.org/10.1007/978-3-540-89255-7_28
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