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Paper 2007/400
REMARKS ON IBE SCHEME OF WANG AND CAO
Sunder Lal and Priyam Sharma
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).
Metadata
- Available format(s)
- Category
- Public-key cryptography
- Publication info
- Published elsewhere. Unknown where it was published
- Keywords
- Public-Key EncryptionIdentity-Based Encryption (IBE)IND-ID-CCA attackBDHPBIDDHPRandom Oracle.
- Contact author(s)
-
sunder_lal2 @ rediffmail com
priyam_sharma ibs @ rediffmail com - History
- 2007-11-14: revised
- 2007-10-21: received
- See all versions
- Short URL
- https://ia.cr/2007/400
- License
-
CC BY