Patent attributes
A customer can demonstrate control over an element, such as a domain, by receiving a certificate from a certificate authority. A customer can submit a request and receive a request token. The customer can generate a cryptographic hash of the request using the token, which a service provider can compare against an expected hash similarly generated. If the hashes match, an action can be taken such as a certificate issued. A customer can request one or more request tokens up front, whereby the tokens can be used to submit hashes with requests at the appropriate time. In some embodiments a customer can submit a request specifying one or more domains, and a service provider can provide a list of confirmatory email addresses from which the customer can select. The service provider can then send a message to that address that include a link for requesting a certificate.
