RFC Errata
RFC 3709, "Internet X.509 Public Key Infrastructure: Logotypes in X.509 Certificates", February 2004
Note: This RFC has been obsoleted by RFC 9399
Note: This RFC has been updated by RFC 6170
Source of RFC: pkix (sec)
Errata ID: 2679
Status: Held for Document Update
Type: Technical
Publication Format(s) : TEXT
Reported By: Alexey Melnikov
Date Reported: 2010-12-22
Held for Document Update by: Sean Turner
Section 4.1 says:
LogotypeDetails ::= SEQUENCE { mediaType IA5String, -- MIME media type name and optional -- parameters logotypeHash SEQUENCE SIZE (1..MAX) OF HashAlgAndValue, logotypeURI SEQUENCE SIZE (1..MAX) OF IA5String }
Notes:
The mediaType is underspecified, as no specific syntax is given.
E.g. are spaces allowed before parameters? Also, my understanding is that IA5String disallows UTF-8, while media type parameters can possibly include UTF-8 values.
I would recommend referencing ABNF from Section 4.2 of RFC 4288.