ID-Based Outsourced Plaintext Checkable Encryption in Healthcare Database

Abstract

A cryptographic primitive suggested by Carnard et al. in 2012 ensures that on input a plaintext, ciphertext with corresponding public key, it is possible to check if a ciphertext is encryption of a target plaintext with a corresponding public key. This tool enables public plaintext query on ciphertext. We introduce ID-based plaintext checkable encryption (ID-PCE) in outsourced healthcare database. ID-PCE uses receiver's ID as the public key to curtail problems associated with key certificate management in public key encryption. We adopts identity-based cryptography and it achieves a weak-IND-ID-CCA (W-IND-IDCCA). Finally, proof the security of our scheme using random oracle model.