Secure Attributes with Several Authorities for Blockchain in Electronic Health Reports
E S Lakshmi · International Journal for Research in Applied Science and Engineering Technology · 2019
Electronic Health Records are entirely controlled by hospitals rather than patients, which complicates the seeking medical advice from different hospitals. Patients face a problem when they need to focus on the details of their own health care and restore the management of their own medical data. The fast development of Blockchain technology promotes population attention, together with medical records furthermore as patient-related data. This technology provides patients with complete and immutable records and the access to EHRs free from service suppliers and treatment websites. The aim is to ensure the validity of encapsulated EHRs in the Blockchain, we present an attribute-based signature schema with multiple authorities, in which a patient endorses a message based on the attribute by not disclosing any information other than evidence that he testified. In addition, there are multiple authorities with no single or central generate and distribute public / private keys of the patient, which avoids the problem of blocking and complies with the mode of distributed knowledge storage of data in the Blockchain. By sharing the secret seeds of the pseudo-random function among the multiple authorities, this protocol resists a collusion attack out of N of N-1 corrupted authorities. Under the assumption of the machine additive Diffie-Hellman, we also formally demonstrate that, in terms of the accountability and perfect confidentiality of the signatory of the attribute, this attribute-based signature scheme is secure the random oracle pattern. The comparison shows the effectiveness and properties between the planned technique and strategies planned in different studies.