1.4 Relationship to Other Protocols

The One-Time Password Certificate Enrollment Protocol is a Hypertext Transfer Protocol (HTTP)-based protocol. Every protocol request is a single pair of HTTP POST and HTTP response messages. Failure to carry out the request due to server error is reported by an HTTP response code.

The parameters of the protocol's requests and responses are carried in XML-formatted body of the message. The full XML schema (XSD) is described in section 6.