http://scholars.ntou.edu.tw/handle/123456789/21365
Title: | Leakage-Resilient Revocable Certificateless Encryption with an Outsourced Revocation Authority | Authors: | Tseng, Yuh-Min Huang, Sen-Shan Tsai, Tung-Tso Chuang, Yun-Hsin Hung, Ying-Hao |
Keywords: | leakage-resilience;certificateless encryption;revocation;key encapsulation | Issue Date: | 1-Jan-2022 | Publisher: | INST MATHEMATICS & INFORMATICS | Journal Volume: | 33 | Journal Issue: | 1 | Start page/Pages: | 151-179 | Source: | INFORMATICA | Abstract: | To resolve both certificate management and key escrow problems, a certificateless public key system (CLPKS) has been proposed. However, a CLPKS setting must provide a revocation mechanism to revoke compromised users. Thus, a revocable certificateless public-key system (RCLPKS) was presented to address the revocation issue and, in such a system, the key generation centre (KGC) is responsible to run this revocation functionality. Furthermore, a RCLPKS setting with an outsourced revocation authority (ORA), named RCLPKS-ORA setting, was proposed to employ the ORA to alleviate the KGC's computational burden. Very recently it was noticed that adversaries may adopt side-channel attacks to threaten these existing conventional public-key systems (including CLPKS, RCLPKS and RCLPKS-ORA). Fortunately, leakage-resilient cryptography offers a solution to resist such attacks. In this article, the first leakage-resilient revocable certificateless encryption scheme with an ORA, termed LR-RCLE-ORA scheme, is proposed. The proposed scheme is formally shown to be semantically secure against three types of adversaries in the RCLPKS and RCLPKS-ORA settings while resisting side-channel attacks. In the proposed scheme, adversaries are allowed to continually extract partial ingredients of secret keys participated in various computational algorithms of the proposed scheme while retaining its security. |
URI: | http://scholars.ntou.edu.tw/handle/123456789/21365 | ISSN: | 0868-4952 | DOI: | 10.15388/22-INFOR474 |
Appears in Collections: | 資訊工程學系 |
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