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CP-ABE with constant-size keys for lightweight devices

Journal Article


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Abstract


  • Lightweight devices, such as radio frequency identi-

    fication tags, have a limited storage capacity, which has become a

    bottleneck for many applications, especially for security applica-

    tions. Ciphertext-policy attribute-based encryption (CP-ABE) is

    a promising cryptographic tool, where the encryptor can decide

    the access structure that will be used to protect the sensitive

    data. However, current CP-ABE schemes suffer from the issue

    of having long decryption keys, in which the size is linear to

    and dependent on the number of attributes. This drawback

    prevents the use of lightweight devices in practice as a storage

    of the decryption keys of the CP-ABE for users. In this paper,

    we provide an affirmative answer to the above long standing issue,

    which will make the CP-ABE very practical. We propose a novel

    CP-ABE scheme with constant-size decryption keys independent

    of the number of attributes. We found that the size can be

    as small as 672 bits. In comparison with other schemes in

    the literature, the proposed scheme is the only CP-ABE with

    expressive access structures, which is suitable for CP-ABE key

    storage in lightweight devices.

  • Lightweight devices, such as radio frequency identi-

    fication tags, have a limited storage capacity, which has become a

    bottleneck for many applications, especially for security applica-

    tions. Ciphertext-policy attribute-based encryption (CP-ABE) is

    a promising cryptographic tool, where the encryptor can decide

    the access structure that will be used to protect the sensitive

    data. However, current CP-ABE schemes suffer from the issue

    of having long decryption keys, in which the size is linear to

    and dependent on the number of attributes. This drawback

    prevents the use of lightweight devices in practice as a storage

    of the decryption keys of the CP-ABE for users. In this paper,

    we provide an affirmative answer to the above long standing issue,

    which will make the CP-ABE very practical. We propose a novel

    CP-ABE scheme with constant-size decryption keys independent

    of the number of attributes. We found that the size can be

    as small as 672 bits. In comparison with other schemes in

    the literature, the proposed scheme is the only CP-ABE with

    expressive access structures, which is suitable for CP-ABE key

    storage in lightweight devices.

UOW Authors


Publication Date


  • 2014

Citation


  • Guo, F., Susilo, W., Wong, D. S. & Varadharajan, V. (2014). CP-ABE with constant-size keys for lightweight devices. IEEE Transactions on Information Forensics and Security, 9 (5), 763-771.

Scopus Eid


  • 2-s2.0-84898823624

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=4080&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3064

Has Global Citation Frequency


Number Of Pages


  • 8
  • 8

Start Page


  • 763

End Page


  • 771

Volume


  • 9

Issue


  • 5

Place Of Publication


  • United States

Abstract


  • Lightweight devices, such as radio frequency identi-

    fication tags, have a limited storage capacity, which has become a

    bottleneck for many applications, especially for security applica-

    tions. Ciphertext-policy attribute-based encryption (CP-ABE) is

    a promising cryptographic tool, where the encryptor can decide

    the access structure that will be used to protect the sensitive

    data. However, current CP-ABE schemes suffer from the issue

    of having long decryption keys, in which the size is linear to

    and dependent on the number of attributes. This drawback

    prevents the use of lightweight devices in practice as a storage

    of the decryption keys of the CP-ABE for users. In this paper,

    we provide an affirmative answer to the above long standing issue,

    which will make the CP-ABE very practical. We propose a novel

    CP-ABE scheme with constant-size decryption keys independent

    of the number of attributes. We found that the size can be

    as small as 672 bits. In comparison with other schemes in

    the literature, the proposed scheme is the only CP-ABE with

    expressive access structures, which is suitable for CP-ABE key

    storage in lightweight devices.

  • Lightweight devices, such as radio frequency identi-

    fication tags, have a limited storage capacity, which has become a

    bottleneck for many applications, especially for security applica-

    tions. Ciphertext-policy attribute-based encryption (CP-ABE) is

    a promising cryptographic tool, where the encryptor can decide

    the access structure that will be used to protect the sensitive

    data. However, current CP-ABE schemes suffer from the issue

    of having long decryption keys, in which the size is linear to

    and dependent on the number of attributes. This drawback

    prevents the use of lightweight devices in practice as a storage

    of the decryption keys of the CP-ABE for users. In this paper,

    we provide an affirmative answer to the above long standing issue,

    which will make the CP-ABE very practical. We propose a novel

    CP-ABE scheme with constant-size decryption keys independent

    of the number of attributes. We found that the size can be

    as small as 672 bits. In comparison with other schemes in

    the literature, the proposed scheme is the only CP-ABE with

    expressive access structures, which is suitable for CP-ABE key

    storage in lightweight devices.

UOW Authors


Publication Date


  • 2014

Citation


  • Guo, F., Susilo, W., Wong, D. S. & Varadharajan, V. (2014). CP-ABE with constant-size keys for lightweight devices. IEEE Transactions on Information Forensics and Security, 9 (5), 763-771.

Scopus Eid


  • 2-s2.0-84898823624

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=4080&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3064

Has Global Citation Frequency


Number Of Pages


  • 8
  • 8

Start Page


  • 763

End Page


  • 771

Volume


  • 9

Issue


  • 5

Place Of Publication


  • United States