An Efficient Attribute-Based Authenticated Key Exchange Protocol

Chakraborty, Suvradip; Rao, Y. Sreenivasa; Rangan, C. Pandu

doi:10.1007/978-3-030-02641-7_24

Cited by 2 publications

(1 citation statement)

References 15 publications

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“…And the user's overhead can be reduced by outsourcing the basic operations, such as cloud outsourcing [16]- [19], batch verifying [20], [21]. In an ABS scheme, by verifying a signature on some message with respect to some claimed attributes, a verifier gets convinced that the signature is indeed generated by someone holding some attributes [22]. ABS translates the verification of signer's identity into the verification of signer's attributes, thereby protecting the signer's true identity.…”

Section: Introductionmentioning

confidence: 99%

Revocable Attribute-Based Signature for Blockchain-Based Healthcare System

Zhang

Xue

et al. 2020

IEEE Access

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Blockchain-Based Healthcare System (HS-BC) is an electronic medical record (EMR) datasharing system, which significantly facilitates the storage, access, and sharing of EMR data, and provides patients with timely and effective medical diagnosis and treatment. However, due to the high openness of the blockchain, security and privacy still are major concerns in HS-BC. In this paper, we propose an attribute-based signature scheme with attribute revocation to protect the privacy of the user's identity in HS-BC. Under the premise of using attributes to identify users and protect their identity, the user combines the attribute master-key and the attribute update-key to calculate the attribute signing key, where the attribute master-key is related to the user identity and attribute set, and the attribute update-key is related to the attribute revocation. Through making use of the KUNodes algorithm, attribute revocation can effectively achieve. The designed attribute-based signature scheme requires relatively few pairing operations and does not rely on a central authority. Besides, we formally conducted a security analysis and proved that the proposed scheme is unforgeable, collusion resistant and privacy-preserving. Finally, we evaluate the proposed attribute-based signature scheme in terms of storage and efficiency. Comparison and experimental results show that it is feasible.

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