A deep-dive explainer on Ink and Switch's BeeKEM protocol
a year ago
- #Cryptography
- #Decentralization
- #Privacy
- The article discusses Ink and Switch's BeeKEM protocol, a key encapsulation mechanism designed for decentralized, capability-based systems.
- BeeKEM is part of the Keyhive project, which aims to enable privacy-preserving local-first apps by providing distributed capability-based authorization.
- The protocol addresses challenges in encrypting CRDT operations end-to-end, especially in group collaboration scenarios.
- BeeKEM is compared with TreeKEM, highlighting its ability to handle concurrent updates and network splits more effectively by modeling group state in multiple epochs.
- The article explains the basics of secure messaging, including Signal protocol and MLS, before diving into how BeeKEM improves upon these with its tree-based key management.
- Key operations in BeeKEM include updating the group secret, adding or removing members, and resolving conflicts arising from concurrent updates.
- The author expresses excitement for the formal publication of BeeKEM's details and its potential applications in local-first apps.