Signy: Signed URLs for Small Devices
Summary
Signy is a library for generating signed URLs on embedded devices, enabling time-limited access to private resources served by a CDN or similar system. The project uses PSA Crypto for signing, requires a verifier server with the appropriate CA certificates, and provides Zephyr and ESP-IDF integration paths. It documents the URL format, key management, and practical usage in edge devices, emphasizing secure key handling and integration with Golioth ecosystems.