GO-CP-ABE: group-oriented ciphertext-policy attribute-based encryption

Yang Li, Xiaoling Tao, Wei Wu, Joseph K. Liu

Research output: Contribution to journalArticleResearchpeer-review

3 Citations (Scopus)


We introduce a variant of ciphertext-policy attribute-based encryption called group-oriented ciphertext-policy attribute-based encryption (GO-CP-ABE). In the new notion, message is encrypted under an access structure over attributes and users are described by their attributes. In addition, users are divided into different groups and each user belongs to only one group. Users within the same group can merge their attributes to decrypt successfully, if the union of their attributes satisfies the access structure embedded in the ciphertext. But users from different groups cannot realise this cooperative decryption. We define the security model of GO-CP-ABE and present an efficient design by revising an existing CP-ABE scheme.

Original languageEnglish
Pages (from-to)62-70
Number of pages9
JournalInternational Journal of Embedded Systems
Issue number1
Publication statusPublished - 2018


  • access structure
  • attribute-based encryption
  • cooperative decryption.
  • group-oriented

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