We are very pleased to present the proceedings of the 4th International Conference on Historical Cryptology, HISTOCRYPT 2021. Due to the COVID-19 pandemic, the respective conference has been postponed to June 2022 in Amsterdam, the Netherlands. This means that all accepted papers and posters from 2021 will be presented together with the next year’s contributions in Amsterdam in 2022.
Series: Linköping Electronic Conference Proceedings 183
Editor: Carola Dahlke
ISSN: 1650-3686 (print), 1650-3740 (online)