Citation
Asbullah, Muhammad Asyraf and Kamel Ariffin, Muhammad Rezal
(2013)
A new CCA-secure encryption based on the Gap Hashed Diffie-Hellman problem.
Journal of Communications and Information Sciences, 3 (3).
pp. 45-51.
ISSN 2093-9671; ESSN: 2233-9396
Abstract
This paper proposes a variant of the ElGamal public key
encryption which is secure against chosen ciphertext attack. Our proof of security is based on the intractability of the Gap Hashed Diffie-Hellman assumption in the standard model. The proposed scheme is practical to send encrypted
short messages such as credit card information, PIN code, password etc. This scheme also preserves the computational performance of the hash ElGamal encryption scheme (i.e. its simplistic algebraic construction, less exponentiation cost).
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