[Users] [Bug 3493] New: PGP/MIME signature uses uppercase micalg parameter value

[noreply at thewildbeast.co.uk]

http://www.thewildbeast.co.uk/claws-mail/bugzilla/show_bug.cgi?id=3493

            Bug ID: 3493
           Summary: PGP/MIME signature uses uppercase micalg parameter
                    value
    Classification: Unclassified
           Product: Claws Mail
           Version: 3.9.0
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P3
         Component: Plugins/Privacy
          Assignee: users at lists.claws-mail.org
          Reporter: mail at bodograumann.de

When signing a mail with the PGP/MIME plugin, the parameter value of "micalg"
is written as "PGP-SHA1".

According to RFC 1521, Section 2
(https://tools.ietf.org/html/rfc1521#section-2):
   [...] parameter values are case-sensitive unless otherwise specified for
   the specific parameter.

and RFC 3156, Section 5 (https://tools.ietf.org/html/rfc3156#section-5) states:
   [...] converting the text name to lower case and prefixing it with the four
characters "pgp-"

while there is no mention in RFCs 1847 or 3156, that the micalg parameter is
case insensitive.

So please change it to lowercase.

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