"Towards a quarter-century of public key cryptography" is a scholarly book that brings together significant contributions and current research findings in the field of public key cryptography. This book provides a comprehensive overview of the developments and challenges in this dynamic research area. It is aimed at professionals, students, and anyone interested in gaining a deeper understanding of the theoretical and practical aspects of public key cryptography. The collected works offer valuable insights into the complex issues that arise in cryptography and highlight the progress made over the past 25 years. Edited by Neal Koblitz, this book serves as a valuable reference that is important for both academic and practical applications.