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Paper: REMARKS ON IBE SCHEME OF WANG AND CAO

Authors:
Sunder Lal
Priyam Sharma
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URL: http://eprint.iacr.org/2007/400
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Abstract: In this paper we analyze and find an anomaly in the security proof of the identity-based encryption (IBE) scheme fullM-IBE of Wang and Cao [9], which is based on mBDHP. Here we give another proof for fullM-IBE which is based on Bilinear Diffie-Hellman Problem (BDHP). We also obtain a tightness improvement using a stronger assumption, namely, the Bilinear Inverse Dicision Diffie-Hellman problem (BIDDHP).
BibTeX
@misc{eprint-2007-13680,
  title={REMARKS ON IBE SCHEME OF WANG AND CAO},
  booktitle={IACR Eprint archive},
  keywords={public-key cryptography / Public-Key Encryption, Identity-Based Encryption (IBE), IND-ID-CCA attack, BDHP, BIDDHP, Random Oracle.},
  url={http://eprint.iacr.org/2007/400},
  note={ sunder_lal2@rediffmail.com, priyam_sharma.ibs@rediffmail.com 13831 received 15 Oct 2007, last revised 13 Nov 2007},
  author={Sunder Lal and Priyam Sharma},
  year=2007
}