= register: command to register set-top-box identity with signer == SYNOPSIS *mux/register* [ _signer_ ]  _Register_ is intended for use on a set top box (or similar device). Itconnects to _signer_, a machine configured to sign certificates, andobtains an authenticated certificate based on the contents of (the set top box ID in non-volatile memory). The certificate is saved inthe file for later use. If no _signer_ is named explicitly, the *$SIGNER* namedin _db_(6) is used instead. There are several phases to obtaining the certificate. 1.  The register command interacts with _signer_(8) on the signing hostto construct the certificate. This certificate is `blinded' by a randombit mask, sent back to _register_ which displays it in textual orgraphical form to the user.2.  The user running _register_ must use an independent, securemechanism (for example, an untapped telephone call) to communicate witha human agent at the site acting as _signer_. That agent runs _verify_(see _signer_(8)) to display the same `blinded' certificate that wasshown to _register_'s user at the client. Once the agent is convincedthat the `blinded' certificate has been delivered to the correct party,the agent tells _verify_ to accept the identity of the caller.3.  _Register_ then connects to the _countersigner_ process (see_signer_(8)) to obtain the bitmask needed to `unblind' the previouslyreceived certificate. This step can only validly be performed after thesuccessful completion of _verify_ on the _signer._ == FILES */nvfs/ID*::  File emulating set top box-id in ROM.*/nvfs/default*::  Repository of authenticated certificate.*/services/cs/db*::  Default definition of `signer' host. == SOURCE */appl/mux/register.b* == SEE ALSO _db_(6), _manufacture_(8), _signer_(8)