An ElGamal-like cryptosystem for enciphering large messages
Min‐Shiang Hwang, C.-C. G. Chang, Kuo‐Feng Hwang · IEEE Transactions on Knowledge and Data Engineering · 2002
In practice, we usually require two cryptosystems, an asymmetric one and a symmetric one, to encrypt a large confidential message. The asymmetric cryptosystem is used to deliver secret key SK, while the symmetric cryptosystem is used to encrypt a large confidential message with the secret key SK. In this article, we propose a simple cryptosystem which allows a large confidential message to be encrypted efficiently. Our scheme is based on the Diffie-Hellman distribution scheme, together with the ElGamal cryptosystem.