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An Anonymous ID-based Encryption Revisited
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Abstract: | In 2006, Boyen and Waters proposed an anonymous ID-based encryption. It is impressive that in the scheme the system secret key is a tuple of five numbers. The user's secret key is also a tuple of five elements. The authors did not explain why it should introduce so many parameters. In this paper, we simulate a general attempt to attack the scheme. It shows us which parameters are essential to the scheme and which parameters can be reasonably discarded. Based on the analysis we present a simplified version and an efficient version of the Boyen-Waters scheme. The analyzing technique developed in this paper is helpful to better other cryptographic protocols. |
BibTeX
@misc{eprint-2010-22966, title={An Anonymous ID-based Encryption Revisited}, booktitle={IACR Eprint archive}, keywords={cryptographic protocols / Anonymous ID-based encryption, Smooth Transition}, url={http://eprint.iacr.org/2010/065}, note={ zhencao@ulb.ac.be 14647 received 7 Feb 2010}, author={Zhengjun Cao}, year=2010 }