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Title:
Secure Certificateless Public Key Encryption without Redundancy
Authors: Yinxia Sun, Futai Zhang
Abstract:Certificateless public key cryptography was introduced to solve the key escrow problem in identity based cryptography while enjoying the most attractive {\em certificateless} property. In this paper, we present the first {\em secure} certificateless public key encryption (CLPKE) scheme {\em without redundancy}. Our construction provides optimal bandwidth and a quite efficient decryption process among all the existing CLPKE schemes. It is provably secure against adaptive chosen ciphertext attacks in the random oracle model under a slightly stronger assumption.
ePrint: https://eprint.iacr.org/2008/487
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