Net::SSH::Perl::Auth::PublicKey(3pm) - phpMan

Net::SSH::Perl::Auth::PublicKeyUser)Contributed Perl DocumentNet::SSH::Perl::Auth::PublicKey(3pm)



NAME
       Net::SSH::Perl::Auth::PublicKey - Perform publickey authentication

SYNOPSIS
           use Net::SSH::Perl::Auth;
           my $auth = Net::SSH::Perl::Auth->new('PublicKey', $ssh);
           $auth->authenticate;

DESCRIPTION
       Net::SSH::Perl::Auth::PublicKey performs publickey authentication with a remote sshd
       server. When you create a new PublicKey auth object, you give it an $ssh object, which
       should contain an open connection to an ssh daemon, as well as any data that the
       authentication module needs to proceed. In this case, for example, the $ssh object might
       contain a list of identity files (see the docs for Net::SSH::Perl).

       The authenticate method first tries to establish a connection to an authentication agent.
       If the attempt is successful, authenticate loops through each of the identities returned
       from the agent and tries each identity against the sshd, entering into a dialog with the
       server: the client sends the public portion of the key to determine whether the server
       will accept it; if the server accepts the key as authorization, the client then asks the
       agent to sign a piece of data using the key, which the client sends to the server. If the
       server accepts an identity/key, authentication is successful.

       If the agent connection attempt fails, or if none of the identities returned from the
       agent allow for successful authentication, authenticate then tries to load each of the
       user's private key identity files (specified in the Net::SSH::Perl constructor, or
       defaulted to $ENV{HOME}/.ssh/id_dsa). For each identity, authenticate enters into a dialog
       with the server. The client sends a message to the server, giving its public key, plus a
       signature of the key and the other data in the message (session ID, etc.).  The signature
       is generated using the corresponding private key.  The sshd receives the message and
       verifies the signature using the client's public key. If the verification is successful,
       the authentication succeeds.

       When loading each of the private key files, the client first tries to load the key using
       an empty passphrase. If this fails, the client either prompts the user for a passphrase
       (if the session is interactive) or skips the key altogether.

AUTHOR & COPYRIGHTS
       Please see the Net::SSH::Perl manpage for author, copyright, and license information.



perl v5.10.0                                2009-01-25       Net::SSH::Perl::Auth::PublicKey(3pm)

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