Enhanced Secure Sharing of PHRs in Cloud Using Attribute-Based Encryption and Signature with Keyword Search

Abstract

Personal health record (PHR) is an emerging trend to exchange and share a person’s health information with the help of the third party cloud providers.There are many researches done using Attribute-Based Encryption (ABE) technique to share the information securely. A perfect signature guarantees unforgeability and privacy for the signer. In Attribute-Based Signature (ABS) with a set of attributes given by the authority, a signer can authenticate a message with a predicate. We provide a novel method “Enhanced Secure Sharing of PHRs in Cloud using Attribute-Based Encryption and Signature with Keyword Search” which ensures security, scalability, efficiency. In our proposed scheme, (i) the health records are encrypted using ABE (ii) it is authenticated using ABS scheme (iii) further we allow the user to search the encrypted data using the keywords.