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.IX Title "GnuPG::Signature 3"
.TH GnuPG::Signature 3 2024-03-13 "perl v5.38.2" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.nh
.SH NAME
GnuPG::Signature \- GnuPG Key Signature Objects
.SH SYNOPSIS
.IX Header "SYNOPSIS"
.Vb 2
\&  # assumes a GnuPG::Key or GnuPG::UserID or GnuPG::UserAttribute object in $signed
\&  my $signing_id = $signed\->signatures\->[0]\->hex_id();
.Ve
.SH DESCRIPTION
.IX Header "DESCRIPTION"
GnuPG::Signature objects are generally not instantiated
on their own, but rather as part of GnuPG::Key objects.
They embody various aspects of a GnuPG signature on a key.
.SH "OBJECT METHODS"
.IX Header "OBJECT METHODS"
.ie n .IP "new( \fR\fI%initialization_args\fR\fI\fR )" 4
.el .IP "new( \fR\f(CI%initialization_args\fR\fI\fR )" 4
.IX Item "new( %initialization_args )"
This methods creates a new object.  The optional arguments are
initialization of data members.
.IP \fBis_valid()\fR 4
.IX Item "is_valid()"
Returns 1 if GnuPG was able to cryptographically verify the signature,
otherwise 0.
.ie n .IP "compare( \fR\fI$other\fR\fI\fR )" 4
.el .IP "compare( \fR\f(CI$other\fR\fI\fR )" 4
.IX Item "compare( $other )"
Returns non-zero only when this Signature is identical to the other
GnuPG::Signature.
.SH "OBJECT DATA MEMBERS"
.IX Header "OBJECT DATA MEMBERS"
.IP validity 4
.IX Item "validity"
A character indicating the cryptographic validity of the key.  GnuPG
uses at least the following characters: "!" means valid, "\-" means not
valid, "?" means unknown (e.g. if the supposed signing key is not
present in the local keyring), and "%" means an error occurred (e.g. a
non-supported algorithm).  See the documentation for \-\-check\-sigs in
\&\fBgpg\fR\|(1).
.IP algo_num 4
.IX Item "algo_num"
The number of the algorithm used for the signature.
.IP hex_id 4
.IX Item "hex_id"
The hex id of the signing key.
.IP user_id_string 4
.IX Item "user_id_string"
The first user id string on the key that made the signature.
This may not be defined if the signing key is not on the local keyring.
.IP sig_class 4
.IX Item "sig_class"
Signature class.  This is the numeric value of the class of signature.
.Sp
A table of possible classes of signatures and their numeric types can
be found at http://tools.ietf.org/html/rfc4880#section\-5.2.1
.IP is_exportable 4
.IX Item "is_exportable"
returns 0 for local-only signatures, non-zero for exportable
signatures.
.IP date_string 4
.IX Item "date_string"
The formatted date the signature was performed on.
.IP date 4
.IX Item "date"
The date the signature was performed, represented as the number of
seconds since midnight 1970\-01\-01 UTC.
.IP expiration_date_string 4
.IX Item "expiration_date_string"
The formatted date the signature will expire (signatures without
expiration return undef).
.IP expiration_date 4
.IX Item "expiration_date"
The date the signature will expire, represented as the number of
seconds since midnight 1970\-01\-01 UTC (signatures without expiration
return undef)
.SH "SEE ALSO"
.IX Header "SEE ALSO"