Cryptology ePrint Archive: Report 2006/377

Efficient Chosen-Ciphertext Secure Identity-Based Encryption with Wildcards

James Birkett, Alexander W. Dent, Gregory Neven and Jacob Schuldt

Abstract: We propose new instantiations of chosen-ciphertext secure identity-based encryption schemes with wildcards (WIBE). Our schemes outperform all existing alternatives in terms of efficiency as well as security. We achieve these results by extending the hybrid encryption (KEM--DEM) framework to the case of WIBE schemes. We propose and prove secure one generic construction in the random oracle model, and one direct construction in the standard model.

Category / Keywords: public-key cryptography /

Publication Info: Will appear in ACISP 2007, volume 4586 of Lecture Notes in Computer Science, pages 274--292, 2007.

Date: received 31 Oct 2006, last revised 16 May 2007

Contact author: a dent at rhul ac uk

Available formats: Postscript (PS) | Compressed Postscript (PS.GZ) | PDF | BibTeX Citation

Version: 20070516:154723 (All versions of this report)

Discussion forum: Show discussion | Start new discussion