This book constitutes revised selected papers from the 21st International Conference on Information Security and Cryptology, ICISC 2018, held in Seoul, South Korea, in November 2018. The total of 21 papers presented in this volume were carefully reviewed and selected from 49 submissions. The papers were organized in topical sections named: public-key encryption and implementation; homomorphic encryption; secure multiparty computation; post-quantum cryptography; secret sharing and searchable encryption; storage security and information retrieval; and attacks and software security.

This book constitutes revised selected papers from the 22nd International Conference on Information Security and Cryptology, ICISC 2019, held in Seoul, South Korea, in December 2019. The total of 18 papers presented in this volume were carefully reviewed and selected from 43 submissions. The papers were organized in topical sections named: public-key encryption and implementation; homomorphic encryption; secure multiparty computation; post-quantum cryptography; secret sharing and searchable encryption; storage security and information retrieval; and attacks and software security.

This book constitutes selected papers from the 23rd International Conference on Information Security and Cryptology, ICISC 2020, held in Seoul, South Korea, in December 2020. Due to the COVID-19, the confere was held online. The total of 15 papers presented in this volume were carefully reviewed and selected from 51 submissions. The aim of this conference was to provide an international forum for the latest results of research, development, and applications within the field of information security and cryptology.

This book constitutes selected papers from the 24th International Conference on Information Security and Cryptology, ICISC 2021, held in Seoul, South Korea, in December 2021. The total of 23 papers presented in this volume were carefully reviewed and selected from 63 submissions. The papers are arranged by topic: Cryptographic Protocol in Quantum Computer Age; Security Analysis of Hash Algorithm; Security analysis of Symmetric Key Encryption Algorithm; Fault and Side-Channel Attack; Constructions and Designs; Quantum Circuit; Efficient Implementation. The aim of this conference was to provide an international forum for the latest results of research, development, and applications within the field of information security and cryptology.

This book constitutes the post-conference proceedings of the 14th International Conference on Information Security and Cryptology, Inscrypt 2018, held in Fuzhou, China, in December 2018. The 31 full papers presented together with 5 short papers and 1 invited paper were carefully reviewed and selected from 93 submissions. The papers cover topics in the field of blockchain and crypto currency; lattice-based cryptology; symmetric cryptology; applied cryptography; information security; assymetric encryption; and foundations.

This book constitutes the refereed proceedings of the 25th International Conference, ICISC 2022, held in Seoul, South Korea, during November 30–December 2, 2022. The 24 full papers included in this book were carefully reviewed and selected from 69 submissions. They were organized in topical sections as follows: ​Public Key Encryption with Hierarchical Authorized Keyword Search, Implicit Key-stretching Security of Encryption Schemes.