Journal
IEEE TRANSACTIONS ON NETWORK AND SERVICE MANAGEMENT
Volume 19, Issue 3, Pages 2421-2433Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TNSM.2022.3153485
Keywords
Attribute-based online/offline encryption; identity-based ring signature; outsourced decryption; wireless body area network
Categories
Funding
- National Key Research and Development Program of China [2020YFE0200600]
- National Natural Science Foundation of China [62002058]
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This paper proposes an outsourced online/offline hybrid encryption signature scheme that utilizes attribute-based encryption and identity-based ring signature, achieving data confidentiality and fine-grained access control, as well as increasing the throughput of the central authority and saving power resources of mobile devices.
Wireless body area networks (WBAN) enable ubiquitous monitoring of patients, which can change the future of healthcare services overwhelmingly. As the collected data of patients usually contain sensitive information, how to collect, transfer, store and share data securely and properly has become a concerning issue. Attribute-based encryption (ABE) can achieve data confidentiality and fine-grained access control simultaneously. Identity-based ring signature (IBRS) allows patients to prove their identity without leaking any extra (private) information. However, the heavy computational burden of ABE and IBRS is intolerable for most power-limited mobile devices, which account for a large proportion of WBAN devices. This paper combines the attribute-based online/offline encryption (ABOOE) and IBRS to achieve an outsourced online/offline hybrid signcryption (O-3 HSC) scheme. As far as we know, this scheme is the first signcryption scheme that adopts IBRS and satisfies online/offline signcryption simultaneously. O-3 HSC divides the key generation and signcryption into offline and online phases to increase the throughput of the central authority and save the power resources of mobile devices, respectively. Besides, outsourced decryption and public signature verification are also realized. O-3 HSC achieves security under CCA and CMIA, and the performance analysis shows that O-3 HSC is a lightweight and applicable scheme for WBAN.
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