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

Journal Article


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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.

UOW Authors


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

Publication Date


  • 2014

Citation


  • Han, J., Susilo, W., Mu, Y., Zhou, J. & Au, M. Ho. (2014). PPDCP-ABE: Privacy-preserving decentralized ciphertext-policy attribute-based encryption. Lecture Notes in Computer Science, 8713 73-90.

Scopus Eid


  • 2-s2.0-84906519232

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=4094&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3078

Has Global Citation Frequency


Number Of Pages


  • 17

Start Page


  • 73

End Page


  • 90

Volume


  • 8713

Place Of Publication


  • Germany

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.

UOW Authors


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

Publication Date


  • 2014

Citation


  • Han, J., Susilo, W., Mu, Y., Zhou, J. & Au, M. Ho. (2014). PPDCP-ABE: Privacy-preserving decentralized ciphertext-policy attribute-based encryption. Lecture Notes in Computer Science, 8713 73-90.

Scopus Eid


  • 2-s2.0-84906519232

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=4094&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3078

Has Global Citation Frequency


Number Of Pages


  • 17

Start Page


  • 73

End Page


  • 90

Volume


  • 8713

Place Of Publication


  • Germany