POSTECH: Professor Jae Choon Cha Wins the PKC Test of Time Award

POSTECH Professor Jae Choon Cha of the Department of Mathematics was presented with the 2021 Test of Time Award at the Public Key Cryptography (PKC) conference on May 12, 2021.

The PKC Test of Time Award is to honor those researchers and research works published at the PKC conference that have shown continuous influence over 15 years.

Professor Cha’s paper, “An Identity-Based Signature from Gap Diffie-Hellman Groups,” published 18 years ago at PKC 2003 had established the mathematical definition and proof methods for digital signature system and its stability for the first time.

The model and safety proving techniques introduced in this paper have been cited more than 1,300 times since becoming the standard research method for ID-based digital signatures.

The PKC Conference is a world-renowned conference on computer science which is organized by the International Association for Cryptologic Research (IACR).