An ElGamal-like cryptosystem for enciphering large messages |
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Authors: | Min-Shiang Hwang Chin-Chen Chang Kuo-Feng Hwang |
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Affiliation: | Dept. of Inf. Manage., Chaoyang Univ. of Technol., Taichung; |
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Abstract: | 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 |
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