Correctness Proof of the Verification of ‘A Combined Public Key Scheme in the Case of Attribute-Based for Wireless Body Area Networks’

Hong et al. presented an attribute-based combined public key signature scheme for wireless body area networks. According to the authors, their scheme enables the signer to maintain confidentiality, unforgeability, privacy, and collusion resistance. In the scheme, encryption and digital signatures are combined. Threshold policy is used in the scheme as the access policy. We review and study this work. We observe that the correctness of the verification is not given in the security analysis of this scheme. Correctness of the verification is a fundamental aspect that ensures the validity and reliability of the scheme. We comprehensively present the correctness of verification of this attribute-based combined public key signature scheme for wireless body area networks.