ndncert

_PROBE: getting all available CAs
/Localhost/CA/PROBE

_NEW: starting request; first-step verification
/localhost/ca-prefix/CA/NEW//[sig]

_SELECT: selecting challenge; second-step verification
/localhost/ca-prefix/CA/SELECT/JSON{requestID}/challengeType/JSON{params}/[sig]

_VALIDATE: if _SELECT alone cannot finish verification
/localhost/ca-prefix/CA/VALIDATE/JSON{requestID}/challengeType/JSON{params}/[sig]

_STATUS: check if the process is done
/localhost/ca-prefix/CA/STATUS/JSON{requestID}/[sig]

_DOWNLOAD:
/localhost/ca-prefix/CA/DOWNLOAD/JSON{requestID}