CryptoDB
A new public key encryption scheme provably secure against adaptive chosen cipher-text attack
Authors: | |
---|---|
Download: | |
Abstract: | We present a new public key cryptosystem based on the notion called square decisional Diffie-Hellman problem. The scheme is provably secure against adaptive chosen cipher-text attack under the hardness assumption of the square decisional Diffie-Hellman problem. Compared with Cramer and Shoup's notable public key scheme, our scheme enjoys several nice features: (1)Both schemes are provably secure against adaptive chosen cipher-text attack under the intractability paradigm (the security of Cramer-Shoup's scheme is based on the standard decisional Diffie-Hellman problem while ours based on the square decisional Diffie-Hellman problem; (2)The computational and communication complexity of our scheme is equivalent to the Cramer and Shoup's scheme however, the test function of Cramer-shoup's scheme is linear while our scheme is non-linear, therefore our reduction is more efficient. |
BibTeX
@misc{eprint-2002-11620, title={A new public key encryption scheme provably secure against adaptive chosen cipher-text attack}, booktitle={IACR Eprint archive}, keywords={public key, square decisional diffie-hellman assumption}, url={http://eprint.iacr.org/2002/097}, note={ zhuhf@zju.edu.cn 12275 received 20 Jul 2002, withdrawn 11 Aug 2003}, author={Huafei Zhu}, year=2002 }