explicit tagging in CRMF ASN.1

I was just looking at the ASN.1 decriptions in
Src/Include/Asn1/pkix_messages.h.  Several (if not all) of the
CRMF structures use EXPLICIT tagging (asn_explicit).  The CRMF  spec
(draft-ietf-pkix-crmf-01.txt, April 1998) specifies a default of
IMPLICIT tagging.  Why is EXPLICIT tagging being used? If the default is
IMPLICIT tagging, EXPLICIT tagging should only be used where the
EXPLICIT label is used, or where a CHOICE or ANY is being tagged (X.208
26.7c ).

Unless I'm missing something.

Thanks,
-james

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James Nicolson                             Member of Technical Staff
[email protected]          Certificate Server and Security Tools