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KDPika Licensing · API v1 Beginner

Security reference

Understand signed decisions, private storage, installation identity and safe failure behavior.

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Updated 2026-10-20 UTCDownload Markdown

What you can do here

Understand signed decisions, private storage, installation identity and safe failure behavior.

  • Signed responses — Understand the exact Ed25519 envelope, PHP canonical bytes, trusted keys, time checks and replay limits before accepting a license.
  • Verify Ed25519 signatures — Run independent signature verifiers in fourteen languages with the same lossless JSON contract and shared conformance tests.
  • Signature test vectors — Download real public-safe Signer vectors and test authenticity separately from expiry, trust and license policy.
  • Offline mode and grace — Configure real SDK cache and grace behavior, test connection failures safely and understand revocation and clock limitations.
  • Entitlements and features — Define product-plan features, enforce boolean and numeric entitlements safely and understand cached plan changes.
  • Threat model — Understand licensing trust boundaries, attacker capabilities, implemented controls and limits on customer-controlled machines.
  • Application hardening — Combine realistic code signing, short validation policies, server authorization and tamper-evident operational records.
  • Secure token storage — Choose native token storage by operating system and language, with explicit SDK fallbacks and tested helper examples.
  • Installation identity — Generate a random stable installation ID without hardware fingerprints and recover safely after reinstall or state loss.
  • API key security and leak response — Scope management credentials and respond to a leak with immediate revocation, request-ID investigation and controlled recovery.
  • Webhook security — Verify exact raw HMAC bytes, reject stale or duplicate events and coordinate endpoint-secret rotation safely.
  • Developer data protection responsibilities — Understand actual customer data, export and retention controls without mistaking pseudonymisation or account closure for complete erasure.
  • Security and responsible disclosure — Review KDPika Licensing's implemented controls, known limits and safe vulnerability-reporting contact.

Next steps

Follow the Complete Integration Guide

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