1Authen::SASL::Perl(3) User Contributed Perl DocumentationAuthen::SASL::Perl(3)
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NAME

6       Authen::SASL::Perl -- Perl implementation of the SASL Authentication
7       framework
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SYNOPSIS

10        use Authen::SASL qw(Perl);
11
12        $sasl = Authen::SASL->new(
13          mechanism => 'CRAM-MD5 PLAIN ANONYMOUS',
14          callback => {
15            user => $user,
16            pass => \&fetch_password
17          }
18        );
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DESCRIPTION

21       Authen::SASL::Perl is the pure Perl implementation of SASL mechanisms
22       in the Authen::SASL framework.
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24       At the time of this writing it provides the client part implementation
25       for the following SASL mechanisms:
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27       ANONYMOUS
28           The Anonymous SASL Mechanism as defined in RFC 2245 resp.  in IETF
29           Draft draft-ietf-sasl-anon-03.txt from February 2004 provides a
30           method to anonymously access internet services.
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32           Since it does no authentication it does not need to send any confi‐
33           dential information such as passwords in plain text over the net‐
34           work.
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36       CRAM-MD5
37           The CRAM-MD5 SASL Mechanism as defined in RFC2195 resp.  in IETF
38           Draft draft-ietf-sasl-crammd5-02.txt from January 2004 offers a
39           simple challenge-response authentication mechanism.
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41           Since it is a challenge-response authentication mechanism no pass‐
42           words are transferred in clear-text over the wire.
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44           Due to the simplicity of the protocol CRAM-MD5 is susceptible to
45           replay and dictionary attacks, so DIGEST-MD5 should be used in pre‐
46           ferrence.
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48       DIGEST-MD5
49           The DIGEST-MD5 SASL Mechanism as defined in RFC 2831 resp.  in IETF
50           Draft draft-ietf-sasl-rfc2831bis-03.txt from February 2004 offers
51           the HTTP Digest Access Authentication as SASL mechanism.
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53           Like CRAM-MD5 it is a challenge-response authentication method that
54           does not send plain text passwords over the network.
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56           Compared to CRAM-MD5, DIGEST-MD5 prevents chosen plaintext attacks,
57           and permits the use of third party authentication servers, so that
58           it is recommended to use DIGEST-MD5 instead of CRAM-MD5 when possi‐
59           ble.
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61       EXTERNAL
62           The EXTERNAL SASL mechanism as defined in RFC 2222 allows the use
63           of external authentication systems as SASL mechanisms.
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65       LOGIN
66           The LOGIN SASL Mechanism as defined in IETF Draft draft-murchi‐
67           son-sasl-login-00.txt from August 2003 allows  the combination of
68           username and clear-text password to be used in a SASL mechanism.
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70           It does does not provide a security layer and sends the credentials
71           in clear over the wire.  Thus this mechanism should not be used
72           without adequate security protection.
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74       PLAIN
75           The Plain SASL Mechanism as defined in RFC 2595 resp. IETF Draft
76           draft-ietf-sasl-plain-04.txt from February 2004 is another SASL
77           mechanism that allows username and clear-text password combinations
78           in SASL environments.
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80           Like LOGIN it sends the credentials in clear over the network and
81           should not be used without sufficient security protection.
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SEE ALSO

84       Authen::SASL, Authen::SASL::Cyrus::ANONYMOUS,
85       Authen::SASL::Cyrus::CRAM_MD5, Authen::SASL::Cyrus::DIGEST_MD5,
86       Authen::SASL::Cyrus::EXTERNAL, Authen::SASL::Cyrus::LOGIN,
87       Authen::SASL::Cyrus::PLAIN
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AUTHOR

90       Peter Marschall <peter@adpm.de>
91
92       Please report any bugs, or post any suggestions, to the perl-ldap mail‐
93       ing list <perl-ldap@perl.org>
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96       Copyright (c) 2004 Peter Marschall.  All rights reserved. This document
97       is distributed, and may be redistributed, under the same terms as Perl
98       itself.
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102perl v5.8.8                       2006-03-25             Authen::SASL::Perl(3)
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