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Presentation
Efficient Multi-receiver identity-based encryption and its application to broadcast encryption
Faculty of Informatics - Papers (Archive)
  • Joonsang Baek, University of Wollongong
  • R. Safavi-Naini, University of Wollongong
  • Willy Susilo, University of Wollongong
RIS ID
11861
Publication Date
1-1-2005
Publication Details

Baek, J., Safavi-Naini, R. & Susilo, W. (2005). Efficient Multi-receiver identity-based encryption and its application to broadcast encryption. In S. Vaudenay (Eds.), International Workshop on Practice and Theory in Public Key Cryptography (pp. 380-397). Germany: Springer.

Abstract
In this paper, we construct an efficient “multi-receiver identity-based encryption scheme”. Our scheme only needs one (or none if precomputed and provided as a public parameter) pairing computation to encrypt a single message for n receivers, in contrast to the simple construction that re-encrypts a message n times using Boneh and Franklin’s identity-based encryption scheme, considered previously in the literature. We extend our scheme to give adaptive chosen ciphertext security. We support both schemes with security proofs under precisely defined formal security model. Finally, we discuss how our scheme can lead to a highly efficient public key broadcast encryption scheme based on the “subset-cover” framework.
Citation Information
Joonsang Baek, R. Safavi-Naini and Willy Susilo. "Efficient Multi-receiver identity-based encryption and its application to broadcast encryption" (2005)
Available at: http://works.bepress.com/wsusilo/222/