crystal-cbor-fido

A secure, constant-time, and strictly compliant FIDO CBOR implementation for Crystal.

Features

• Fully compliant with FIDO Canonical CBOR encoding/decoding specifications.
• Memory safe: strict bounds checking, depth limits, and Duplicate Key rejection.
• Cryptographically secure: uses SipHash-2-4 for map keys to prevent DoS attacks.

Usage

Add this to your application's shard.yml:

dependencies:
  crystal-cbor-fido:
    github: renich/crystal-cbor-fido

Documentation

Full architectural and API documentation is available in the docs/ directory. Use make docs to generate the HTML.

Credits

• Co-developed-by: Gemini AI renich+gemini@woralelandia.com
• Signed-off-by: Rénich Bon Ćirić renich@woralelandia.com

Code of Honor

This project strictly adheres to the Code of Honor drafted by Rénich Bon Ćirić.