1Net::SSH::Perl::Key::DSUAs(e3r)Contributed Perl DocumentNaetti:o:nSSH::Perl::Key::DSA(3)
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NAME

6       Net::SSH::Perl::Key::DSA - DSA key object
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SYNOPSIS

9           use Net::SSH::Perl::Key;
10           my $key = Net::SSH::Perl::Key->new('DSA');
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DESCRIPTION

13       Net::SSH::Perl::Key::DSA subclasses Net::SSH::Perl::Key to implement a
14       key object, SSH style. This object provides all of the methods needed
15       for a DSA key object; the underlying implementation is provided by
16       Crypt::PK::DSA, and this class wraps around that module to provide SSH-
17       specific functionality (eg. taking in a Net::SSH::Perl::Buffer blob and
18       transforming it into a key object).
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USAGE

21       Net::SSH::Perl::Key::DSA implements the interface described in the
22       documentation for Net::SSH::Perl::Key. Any differences or additions are
23       described here.
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25   $key->sign($data)
26       Wraps around Crypt::PK::DSA::sign_message to sign $data using the key
27       $key, then encodes that signature into an SSH-compatible signature
28       blob.  The output of Crypt::PK::DSA::sign_message is a DER ASN.1 binary
29       structure, so that must be decoded to extract the components of the
30       signature.
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32       Returns the signature blob.
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34   $key->verify($signature, $data)
35       Given a signature blob $signature and the original signed data $data,
36       attempts to verify the signature using the key $key.  This wraps around
37       Crypt::PK::DSA::verify_message to perform the core verification.  Since
38       Crypt::PK::DSA::verify_message requires a signature in DER ASN.1
39       format, the signature is reconfigured to that before being passed.
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41       $signature should be an SSH-compatible signature blob, as returned from
42       sign; $data should be a string of data, as passed to sign.
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44       Returns true if the verification succeeds, false otherwise.
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AUTHOR & COPYRIGHTS

47       Please see the Net::SSH::Perl manpage for author, copyright, and
48       license information.
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52perl v5.32.1                      2021-01-27       Net::SSH::Perl::Key::DSA(3)
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