Night Track | GNU Anastasis: Privacy-Preserving Key Backup And Recovery by Christian Grothoff

This talk introduces GNU Anastasis, a Free Software implementation of the Anastasis key backup and recovery protocol designed to address self-custody issues such as cryptocurrency wallets, email, and hard-disk decryption keys. The speaker, Christian Grothoff, explains how Anastasis allows users to securely split their secret keys across multiple independent backup providers, releasing key shares only upon successful user authentication. He covers the cryptographic design that ensures user privacy, the configurable authentication methods, and the customizable recovery policy for key share subsets. The session also features a demonstration of the tool and insights into its APIs for integration with various applications.