Lecturer:Lai Junzuo

Abstract:

A PKE scheme is said to be receiver selective opening (RSO) secure if it can still protect messages transmitted to uncorrupted receivers after the adversary corrupts some receivers and learns their secret keys. Existing works construct RSO secure PKE schemes in a single-challenge setting, where the adversary can only obtain one challenge ciphertext for each public key. However, in practice, it is preferable to have a PKE scheme with RSO security in the multi-challenge setting, where public keys can be used to encrypt multiple messages. In this work, we explore the (im)possibility of achieving PKE schemes with receiver selective opening security in the multi-challenge setting.

Introduction to the Lecturer:

Lai Junzuo, Professor and Doctorial Tutor of the College of Information Science and Technology/College of Cyber Security of Jinan University, focuses on cryptography & information security (including big data, block chain, cloud computation and IoT security) and has research achievements published in well-known international conferences and international journals in the field of cryptography & information security such as EUROCRYPT, ASIACRYPT, PKC, ACM TISSEC, IEEE TIFS, IEEE TDSC and DCC. He is a member of the Technical Committee on Block Chain, China Association for Cryptologic Research, Vice Director of the Technical Committee on Block Chain and astanding member of the Working Committee on Youth, Guangdong Computer Academy, and he leads and participates in key programs of National Natural Science Foundation of China, excellent youth programs of National Natural Science Foundation of China, key programs of basic and applied basic researches in Guangdong Province, excellent youth programs of Natural Science Foundation of Guangdong Province, etc.

Inviter:

Wang Mingqiang, Professor from School of Mathematics

Time:

14:30-15:30, May 12 (Wednesday)

Venue:

Tencent Meeting, Meeting ID: 142 783 112, password: 1205

Click the link to join, or add to the meeting list:

https://meeting.tencent.com/s/nWehYJbSVA3g

Hosted by the School of Mathematics, Shandong University