Skip to main content
placeholder image

PPDCP-ABE: Privacy-preserving decentralized ciphertext-policy attribute-based encryption

Chapter


Abstract


  • Cipher-policy attribute-based encryption (CP-ABE) is a more efficient and flexible encryption system as the encryptor can control the access structure when encrypting a message. In this paper, we propose a privacy-preserving decentralized CP-ABE (PPDCP-ABE) scheme where the central authority is not required, namely each authority can work independently without the cooperation to initialize the system. Meanwhile, a user can obtain secret keys from multiple authorities without releasing his global identifier (GID) and attributes to them. This is contrasted to the previous privacy-preserving multi-authority ABE (PPMA-ABE) schemes where a user can obtain secret keys from multiple authorities with them knowing his attributes and a central authority is required. However, some sensitive attributes can also release the user's identity information. Hence, contemporary PPMA-ABE schemes cannot fully protect users' privacy as multiple authorities can cooperate to identifier a user by collecting and analyzing his attributes. Therefore, it remains a challenging and important work to construct a PPMA-ABE scheme where the central authority is not required and both the identifiers and the attributes are considered. © 2014 Springer International Publishing Switzerland.

UOW Authors


  •   Han, Jinguang (external author)
  •   Au, Man Ho Allen (external author)
  •   Mu, Yi (external author)
  •   Susilo, Willy

Publication Date


  • 2014

Citation


  • Han, J., Susilo, W., Mu, Y., Zhou, J., & Au, M. H. (2014). PPDCP-ABE: Privacy-preserving decentralized ciphertext-policy attribute-based encryption. In Unknown Book (Vol. 8713 LNCS, pp. 73-90). doi:10.1007/978-3-319-11212-1_5

International Standard Book Number (isbn) 13


  • 9783319112114

Scopus Eid


  • 2-s2.0-84906519232

Book Title


  • Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)

Start Page


  • 73

End Page


  • 90

Abstract


  • Cipher-policy attribute-based encryption (CP-ABE) is a more efficient and flexible encryption system as the encryptor can control the access structure when encrypting a message. In this paper, we propose a privacy-preserving decentralized CP-ABE (PPDCP-ABE) scheme where the central authority is not required, namely each authority can work independently without the cooperation to initialize the system. Meanwhile, a user can obtain secret keys from multiple authorities without releasing his global identifier (GID) and attributes to them. This is contrasted to the previous privacy-preserving multi-authority ABE (PPMA-ABE) schemes where a user can obtain secret keys from multiple authorities with them knowing his attributes and a central authority is required. However, some sensitive attributes can also release the user's identity information. Hence, contemporary PPMA-ABE schemes cannot fully protect users' privacy as multiple authorities can cooperate to identifier a user by collecting and analyzing his attributes. Therefore, it remains a challenging and important work to construct a PPMA-ABE scheme where the central authority is not required and both the identifiers and the attributes are considered. © 2014 Springer International Publishing Switzerland.

UOW Authors


  •   Han, Jinguang (external author)
  •   Au, Man Ho Allen (external author)
  •   Mu, Yi (external author)
  •   Susilo, Willy

Publication Date


  • 2014

Citation


  • Han, J., Susilo, W., Mu, Y., Zhou, J., & Au, M. H. (2014). PPDCP-ABE: Privacy-preserving decentralized ciphertext-policy attribute-based encryption. In Unknown Book (Vol. 8713 LNCS, pp. 73-90). doi:10.1007/978-3-319-11212-1_5

International Standard Book Number (isbn) 13


  • 9783319112114

Scopus Eid


  • 2-s2.0-84906519232

Book Title


  • Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)

Start Page


  • 73

End Page


  • 90