{"product_id":"zero-drift-hmac-webhook-verifier-mic-01-hmac","title":"Zero-Drift HMAC Webhook Verifier (MIC-01-HMAC)","description":"\u003cp\u003e\u003cstrong\u003e[CORE IDENTITY]\u003c\/strong\u003e A cryptographic webhook security micro-cartridge that enforces HMAC-SHA256 signature verification on every inbound webhook — eliminating spoofed payload injection and replay attacks at the perimeter.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e[TECHNICAL SPECIFICATIONS]\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFramework \/ Stack:\u003c\/strong\u003e HMAC-SHA256 signature verifier, timestamp drift validator, replay attack prevention window, Fastify\/Express middleware integration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Parameters:\u003c\/strong\u003e Webhook secret, signature header key, acceptable timestamp drift window\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput \/ Execution:\u003c\/strong\u003e Cryptographically verified webhook acceptance or rejection with zero-drift timestamp enforcement and audit log\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003e[DEPLOYMENT CONTEXT]\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Environment:\u003c\/strong\u003e Node.js webhook receivers — Fastify, Express\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTarget Persona:\u003c\/strong\u003e Backend Engineers securing webhook endpoints, Security Teams enforcing cryptographic origin verification\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003e[SOVEREIGN COMPLIANCE]\u003c\/strong\u003e Instant digital fulfillment via automated webhooks.\u003c\/p\u003e","brand":"PersonANexuS","offers":[{"title":"Default Title","offer_id":54354940920121,"sku":"MIC-01-HMAC","price":7.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1009\/9684\/1785\/files\/mic-01.png?v=1787637213","url":"https:\/\/personanexusshop.com\/products\/zero-drift-hmac-webhook-verifier-mic-01-hmac","provider":"PersonANexuS","version":"1.0","type":"link"}