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Mail::DKIM::ARC::MessaUsergContributed PerMail::DKIM::ARC::MessageSignature(3)
NAME
       Mail::DKIM::ARC::MessageSignature - Subclass of Mail::DKIM::Signature
       which represents a ARC-Message-Signature header
VERSION
       version 1.20200907
CONSTRUCTORS
   new() - create a new signature from parameters
         my $signature = Mail::DKIM::ARC::MessageSignature->new(
                             [ Algorithm => 'rsa-sha256', ]
                             [ Signature => $base64, ]
                             [ Method => 'relaxed', ]
                             [ Domain => 'example.org', ]
                             [ Instance => 1, ]
                             [ Headers => 'from:subject:date:message-id', ]
                             [ Query => 'dns', ]
                             [ Selector => 'alpha', ]
                             [ Timestamp => time(), ]
                             [ Expiration => time() + 86400, ]
                         );
       The only differences between this module and Mail::DKIM::Signature are
       the header name, and that 'instance' is an integer rather than a base64
       encoded value.
   instance() - get or set the signing instance (i=) field
         my $i = $signature->instance;
       Instances must be integers less than 1024 according to the spec.
       NOTE: the i= field is "Identity" in DKIM and is a base64 value, but in
       ARC it is "Instance" and an integer.  The parsing routine does not
       check that the i= value is a number.
SEE ALSO
       Mail::DKIM::Signature for DKIM-Signature headers
AUTHORS
       o   Jason Long <jason AT long.name>
       o   Marc Bradshaw <marc AT marcbradshaw.net>
       o   Bron Gondwana <brong AT fastmailteam.com> (ARC)
THANKS
       Work on ensuring that this module passes the ARC test suite was
       generously sponsored by Valimail (https://www.valimail.com/)
COPYRIGHT AND LICENSE
       o   Copyright (C) 2013 by Messiah College
       o   Copyright (C) 2010 by Jason Long
       o   Copyright (C) 2017 by Standcore LLC
       o   Copyright (C) 2020 by FastMail Pty Ltd
       This library is free software; you can redistribute it and/or modify it
       under the same terms as Perl itself, either Perl version 5.8.6 or, at
       your option, any later version of Perl 5 you may have available.
perl v5.26.3                      2020-09-Mail::DKIM::ARC::MessageSignature(3)