To certify an Alexa skill, one needs to validate the certificate. This component provides the method to accomplish the verification of the certificate. 1) Checking the Signature of the Request 2) Verifying the Signature Certificate URL 3) Checking the Timestamp of the Request https://developer.amazon.com/docs/custom-skills/host-a-custom-skill-as-a-web-service.html#checking-the-signature-of-the-request