This book constitutes the refereed and revised post-conference proceedings of the 8th International Workshop on Code-Based Cryptography, CBCrypto 2020, held in Zagreb, Croatia, in May 2020.*The seven papers presented in this book were carefully reviewed and selected from numerous submissions. These contributions focus on various topics such as code-based cryptography, from design to implementation, security, new systems, and improved decoding algorithms. * The conference was held virtually due to the COVID-19 pandemic.

This book constitutes the refereed and revised post-conference proceedings of the 7th International Workshop on Code-Based Cryptography, CBC 2019, held in Darmstadt, Germany, in May 2019. The eight papers presented in this book were carefully reviewed and selected from numerous submissions. These contributions are divided into two groups: The first four papers deal with the design of code-based cryptosystems, while the following four papers are on cryptanalysis of code-based cryptosystems.