Cose Lib Laravel Package

Product Decisions This Supports

• Standardization of cryptographic signatures/encryption: Adopting COSE (CBOR Object Signing and Encryption) aligns with modern web standards (e.g., WebAuthn, FIDO2, EU Digital COVID Certificates) and reduces reliance on legacy formats like JWS/JWE.
• Roadmap for IoT/embedded security: Enables lightweight, compact cryptographic operations for constrained devices (e.g., CBOR’s binary efficiency over JSON).
• Build vs. buy: Avoids reinventing COSE support from scratch, leveraging a maintained library with RFC compliance (RFC 9052/9053) and WebAuthn/FIDO2 compatibility.
• Use cases:
  • Digital health: Validate EU Digital COVID Certificates or similar health passes.
  • Authentication: Secure WebAuthn/FIDO2 attestation/assertion flows (e.g., passwordless logins).
  • Document integrity: Compact signatures for legal/financial documents (replacing PDF signatures).
  • IoT security: Encrypted messaging between devices with limited resources.

When to Consider This Package

• Adopt if:

  • Your system requires COSE compliance (e.g., EU Digital COVID Certificates, WebAuthn, or IoT protocols).
  • You need compact binary signatures/encryption (CBOR is ~30% smaller than JSON Web Signatures).
  • Your stack uses PHP 8.1+ and supports OpenSSL/JSON extensions.
  • You prioritize RFC-standardized cryptography over proprietary formats.

• Look elsewhere if:

  • You’re locked into JWS/JWE (JSON Web Signatures/Encryption) and lack urgency to migrate.
  • Your team lacks CBOR expertise (requires spomky-labs/cbor-php dependency).
  • You need active community support (18 stars, 0 dependents may indicate niche adoption).
  • Your use case is non-cryptographic (e.g., simple API keys where COSE overhead is unjustified).

How to Pitch It (Stakeholders)

For Executives: "This library enables us to adopt COSE, a modern cryptographic standard for compact, secure signatures/encryption—critical for EU Digital COVID Certificates, WebAuthn logins, and IoT security. By using this PHP package, we avoid building COSE support from scratch, reducing development risk while future-proofing our authentication infrastructure. The MIT license and RFC compliance ensure long-term viability."

For Engineering: "The web-auth/cose-lib provides a battle-tested PHP implementation of COSE (RFC 9052/9053) with support for ECDSA, EdDSA, RSA, and HMAC algorithms. It integrates with spomky-labs/cbor-php for binary efficiency and offers type-safe APIs for signing/verifying COSE_Sign1, COSE_Encrypt0, and MAC operations. Ideal for replacing JWS/JWE in constrained environments or adding WebAuthn/FIDO2 support. Requires PHP 8.1+ and OpenSSL."