Title: A novel and efficient cryptosystem for large message encryption

Authors: Debasish Jena, Sanjay Kumar Jena

Addresses: Department of Computer Science and Engineering, International Institute of Information Technology, Bhubaneswar, 751003, Orissa, India. ' Department of Computer Science and Engineering, National Institute of Technology, Rourkela, 769008, Orissa, India

Abstract: Due to more overhead of asymmetric cryptosystems, traditionally, the symmetric cryptosystem is used to encrypt large messages. But the key management, i.e., the key should be available at both sender and receiver before communication is the most difficult part of symmetric cryptosystem. So, to encrypt large messages, we usually take the help of both symmetric and asymmetric cryptosystems. In this paper, we proposed an asymmetric cryptosystem for encrypting large messages, which is not only efficient but also secure as compared to other asymmetric cryptosystems. In consideration of the aspect of efficiency and computation, our proposed scheme uses elliptic curve cryptosystem.

Keywords: ElGamal; elliptic curve discrete logarithm; ECDLP; Diffie-Hellman; elliptic curve cryptography; large message encryption; asymmetric cryptosystems; security.

DOI: 10.1504/IJICT.2011.039521

International Journal of Information and Communication Technology, 2011 Vol.3 No.1, pp.32 - 39

Published online: 06 Apr 2011 *

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