Re: PEM and MIME documents

According to the current PEM/MIME what is the recommended interaction
between a user and a PCA for getting the latest CRL?  In RFC 1424, I
would compose a CRL-RETRIEVAL-REQUEST with the Issuer: field set to
the issuer's name.  But the <id> for the application/key-request has
no "DN only" form like this.  How would I request the CRL for the TIS
PCA, for example?

- Jeff