Simple Generalized Group-Oriented Cryptosystems Using ElGamal Cryptosystem

Chou Chen Yang, Ting Yi Chang, Jian Wei Li, Min Shiang Hwang

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


In the generalized group-oriented cryptosystem, the sender can send a conditional message to a group of users such that only the specified sets of users in this group can cooperate to decrypt this message. In this paper, we will use an ElGamal cryptosystem and an elliptic curve ElGamal cryptosystem to achieve the purposes of generalization and group-orientation, respectively. Both of our schemes are more efficient than Tsai et al.'s scheme in terms of sender's computational complexity.

Original languageEnglish
Pages (from-to)111-120
Number of pages10
Issue number1
Publication statusPublished - 2003 Jan 1

All Science Journal Classification (ASJC) codes

  • Information Systems
  • Applied Mathematics

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