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Authen::SASL::Perl(3pm)        User Contributed Perl Documentation        Authen::SASL::Perl(3pm)

NAME
       Authen::SASL::Perl -- Perl implementation of the SASL Authentication framework

SYNOPSIS
        use Authen::SASL qw(Perl);

        $sasl = Authen::SASL->new(
          mechanism => 'CRAM-MD5 PLAIN ANONYMOUS',
          callback => {
            user => $user,
            pass => \&fetch_password
          }
        );

DESCRIPTION
       Authen::SASL::Perl is the pure Perl implementation of SASL mechanisms in the Authen::SASL
       framework.

       At the time of this writing it provides the client part implementation for the following
       SASL mechanisms:

       ANONYMOUS
           The Anonymous SASL Mechanism as defined in RFC 2245 resp.  in IETF Draft
           draft-ietf-sasl-anon-03.txt from February 2004 provides a method to anonymously access
           internet services.

           Since it does no authentication it does not need to send any confidential information
           such as passwords in plain text over the network.

       CRAM-MD5
           The CRAM-MD5 SASL Mechanism as defined in RFC2195 resp.  in IETF Draft
           draft-ietf-sasl-crammd5-XX.txt offers a simple challenge-response authentication
           mechanism.

           Since it is a challenge-response authentication mechanism no passwords are transferred
           in clear-text over the wire.

           Due to the simplicity of the protocol CRAM-MD5 is susceptible to replay and dictionary
           attacks, so DIGEST-MD5 should be used in preferrence.

       DIGEST-MD5
           The DIGEST-MD5 SASL Mechanism as defined in RFC 2831 resp.  in IETF Draft
           draft-ietf-sasl-rfc2831bis-XX.txt offers the HTTP Digest Access Authentication as SASL
           mechanism.

           Like CRAM-MD5 it is a challenge-response authentication method that does not send
           plain text passwords over the network.

           Compared to CRAM-MD5, DIGEST-MD5 prevents chosen plaintext attacks, and permits the
           use of third party authentication servers, so that it is recommended to use DIGEST-MD5
           instead of CRAM-MD5 when possible.

       EXTERNAL
           The EXTERNAL SASL mechanism as defined in RFC 2222 allows the use of external
           authentication systems as SASL mechanisms.

       GSSAPI
           The GSSAPI SASL mechanism as defined in RFC 2222 resp. IETF Draft
           draft-ietf-sasl-gssapi-XX.txt allows using the Generic Security Service Application
           Program Interface [GSSAPI] KERBEROS V5 as as SASL mechanism.

           Although GSSAPI is a general mechanism for authentication it is almost exlusively used
           for Kerberos 5.

       LOGIN
           The LOGIN SASL Mechanism as defined in IETF Draft draft-murchison-sasl-login-XX.txt
           allows  the combination of username and clear-text password to be used in a SASL
           mechanism.

           It does does not provide a security layer and sends the credentials in clear over the
           wire.  Thus this mechanism should not be used without adequate security protection.

       PLAIN
           The Plain SASL Mechanism as defined in RFC 2595 resp. IETF Draft
           draft-ietf-sasl-plain-XX.txt is another SASL mechanism that allows username and clear-
           text password combinations in SASL environments.

           Like LOGIN it sends the credentials in clear over the network and should not be used
           without sufficient security protection.

       As for server support, only PLAIN, LOGIN and DIGEST-MD5 are supported at the time of this
       writing.

       "server_new" OPTIONS is a hashref that is only relevant for DIGEST-MD5 for now and it
       supports the following options:

       - no_integrity
       - no_confidentiality

       which configures how the security layers are negotiated with the client (or rather imposed
       to the client).

SEE ALSO
       Authen::SASL, Authen::SASL::Perl::ANONYMOUS, Authen::SASL::Perl::CRAM_MD5,
       Authen::SASL::Perl::DIGEST_MD5, Authen::SASL::Perl::EXTERNAL, Authen::SASL::Perl::GSSAPI,
       Authen::SASL::Perl::LOGIN, Authen::SASL::Perl::PLAIN

AUTHOR
       Peter Marschall <peter AT adpm.de>

       Please report any bugs, or post any suggestions, to the perl-ldap mailing list
       <perl-ldap AT perl.org>

COPYRIGHT
       Copyright (c) 2004-2006 Peter Marschall.  All rights reserved. This document is
       distributed, and may be redistributed, under the same terms as Perl itself.

perl v5.32.0                                2020-12-18                    Authen::SASL::Perl(3pm)

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