Yanan Chen1,2,3,4, Ting Yao1,4,*, Haiping Ren2, Zehao Gan1
CMES-Computer Modeling in Engineering & Sciences, Vol.131, No.3, pp. 1497-1513, 2022, DOI:10.32604/cmes.2022.019589
Abstract The introduction of the electronic medical record (EHR) sharing system has made a great contribution to the
management and sharing of healthcare data. Considering referral treatment for patients, the original signature
needs to be converted into a re-signature that can be verified by the new organization. Proxy re-signature (PRS) can
be applied to this scenario so that authenticity and nonrepudiation can still be insured for data. Unfortunately, the
existing PRS schemes cannot realize forward and backward security. Therefore, this paper proposes the first PRS
scheme that can provide key-insulated property, which can guarantee both the forward and backward security of… More >
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