Ciphertext-Policy Attribute-Based Broadcast Encryption Scheme

Asim, Muhammad and Ibraimi, Luan and Petkovic, Milan (2011) Ciphertext-Policy Attribute-Based Broadcast Encryption Scheme. In: Proceedings of the 12th IFIP TC 6 / TC 11 International Conference on Communications and Multimedia Security (CMS 2011), 19-21 Oct 2011, Ghent, Belgium.

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Abstract:	In this work, we design a new attribute-based encryption scheme with the revocation capability. In the proposed schemes, the user (broadcaster) encrypts the data according to an access policy over the set of attributes, and a list of the identities of revoked users. Only recipients who have attributes which satisfy the access policy and whose identity is not in the list of revoked users will be able to decrypt the message.The proposed scheme can be used for revocation of up to t users. The complexity of proposed schemes is dependent on the number of revoked users r, rather than on the total number n of users in the system. The security of the scheme has been proved under the Decisional Bilinear Diffie-Hellman (DBDH) assumption.
Item Type:	Conference or Workshop Item
Copyright:	© 2011 Springer
Faculty:	Electrical Engineering, Mathematics and Computer Science (EEMCS)
Research Group:	Databases (DB)
Link to this item:	http://purl.utwente.nl/publications/78920
Official URL:	http://dx.doi.org/10.1007/978-3-642-24712-5_25
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