article · Informatica · 2007

Security Flaw in Simple Generalized Group-Oriented Cryptosystem Using ElGamal Cryptosystem

Chuanming Li, Tzonelih Hwang, Narn-Yih Lee

Cited by 6Open access

Abstract

A generalized group-oriented cryptosystem (GGOC) based on ElGamal cryptosystem was proposed by Yang et al. in 2003. This study shows that if the authorized decryption sets of users are not properly predetermined in Yang et al.'s GGOC, an unauthorized decryption set of users can recover the encrypted message without difficulty. This study also presents an improved protocol to resist such an attack.

Cite this paper

APA 7

Li, C., Hwang, T., & Lee, N.-Y. (2007). Security Flaw in Simple Generalized Group-Oriented Cryptosystem Using ElGamal Cryptosystem. Informatica, 18(1), 61–66. https://doi.org/10.15388/informatica.2007.163

MLA 9

Li, Chuanming, et al. “Security Flaw in Simple Generalized Group-Oriented Cryptosystem Using ElGamal Cryptosystem.” Informatica, vol. 18, no. 1, 2007, pp. 61–66, https://doi.org/10.15388/informatica.2007.163.

Chicago

Li, Chuanming, Tzonelih Hwang, and Narn-Yih Lee. 2007. “Security Flaw in Simple Generalized Group-Oriented Cryptosystem Using ElGamal Cryptosystem.” Informatica 18 (1): 61–66. https://doi.org/10.15388/informatica.2007.163.

Harvard

Li, C., Hwang, T. and Lee, N.-Y. (2007) ‘Security Flaw in Simple Generalized Group-Oriented Cryptosystem Using ElGamal Cryptosystem’, Informatica, 18(1), pp. 61–66. Available at: https://doi.org/10.15388/informatica.2007.163.

BibTeX

@article{li2007security,
  title = {{Security Flaw in Simple Generalized Group-Oriented Cryptosystem Using ElGamal Cryptosystem}},
  author = {Li, Chuanming and Hwang, Tzonelih and Lee, Narn-Yih},
  journal = {Informatica},
  volume = {18},
  number = {1},
  pages = {61--66},
  year = {2007},
  doi = {10.15388/informatica.2007.163}
}

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