Leakage-Resilient Revocable Certificateless Encryption with an Outsourced Revocation Authority

To resolve both certificate management and key escrow problems, a certificateless public-key system (CLPKS) has been proposed. However, CLPKS setting must provide revocation mechanism to revoke compromised users. Thus, revocable (RCLPKS) was presented address the issue and, in such system, generation centre (KGC) is responsible run this functionality. Furthermore, RCLPKS with an outsourced authority (ORA), named RCLPKS-ORA setting, proposed employ ORA alleviate KGC’s computational burden. Very recently it noticed that adversaries may adopt side-channel attacks threaten these existing conventional systems (including CLPKS, RCLPKS-ORA). Fortunately, leakage-resilient cryptography offers solution resist attacks. In article, first encryption scheme ORA, termed LR-RCLE-ORA scheme, The formally shown be semantically secure against three types of settings while resisting are allowed continually extract partial ingredients secret keys participated various algorithms retaining its security.