signature_core (cargo): Signature core types of the Ockam library. 
Keywords: crypto|cryptography|signatures|signing|ockam|authentication|authorization|credentials|distributed-systems|e2ee|encrypted-connections|encrypted-messages|encryption|end-to-end-encryption|identity|identity-managment|influxdb|kafka|key-management|messaging|rust|security|security-tools|trust|zero-trust