Abstract
We propose the first identity based adaptive oblivious transfer protocol with access control (IBAOT-AC) secure in universal composable (UC) framework. The IBAOT-AC is run between multiple senders, multiple receivers and an issuer. Each sender incorporates its identity and access policies associated with the messages in the generation of ciphertext database. Receivers whose attribute sets satisfy the access policy associated with the message and who interact with a sender generating the corresponding ciphertext can only recover the message. The scheme supports access policy in disjunctive form, thereby, realizes disjunction of attributes. The proposed scheme is UC secure in the presence of malicious adversary under \(q\)-Strong Diffie-Hellman (SDH), Decision Bilinear Diffie-Hellman (DBDH), \(q\)-Decision Bilinear Diffie-Hellman Exponent (DBDHE) and Decision Linear (DLIN) assumptions. The scheme outperforms the existing similar schemes in terms of both communication and computation.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.