Protocol Overview

Client                                                   Server

[Contact Information]
[ToS Agreement]
[Additional Data]
Signature                     ------->
                                                     Account URL
                              <-------           Account Object


          [] Information covered by request signatures

                     Account Creation

Client                                                   Server

[Order]
Signature                     ------->
                              <-------  Required Authorizations

[Responses]
Signature                     ------->

                    <~~~~~~~~Validation~~~~~~~~>

[CSR]
Signature                     ------->
                              <-------          Acknowledgement

                    <~~~~~~Await issuance~~~~~~>

[POST-as-GET request]
Signature                     ------->
                              <-------              Certificate

          [] Information covered by request signatures

                   Certificate Issuance

Client                                                 Server

[Revocation request]
Signature                    -------->

                             <--------                 Result

          [] Information covered by request signatures

                  Certificate Revocation

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