Provided by: squid_3.5.12-1ubuntu7_amd64
digest_file_auth - File based digest authentication helper for Squid. Version 1.1
digest_file_auth [-c] file
digest_file_auth is an installed binary authentication program for Squid. It handles digest authentication protocol and authenticates against a text file backend. This program will automatically detect the existence of a concurrecy channel-ID and adjust appropriately. It may be used with any value 0 or above for the auth_param children concurrency= parameter.
-c Accept digest hashed passwords rather than plaintext in the password file
Username database file format: - comment lines are possible and should start with a '#'; - empty or blank lines are possible; - plaintext entry format is username:password - HA1 entry format is username:realm:HA1 To build a directory integrated backend, you need to be able to calculate the HA1 returned to squid. To avoid storing a plaintext password you can calculate MD5(username:realm:password) when the user changes their password, and store the tuple username:realm:HA1. then find the matching username:realm when squid asks for the HA1. This implementation could be improved by using such a triple for the file format. However storing such a triple does little to improve security: If compromised the username:realm:HA1 combination is "plaintext equivalent" - for the purposes of digest authentication they allow the user access. Password syncronisation is not tackled by digest - just preventing on the wire compromise.
This program was written by Robert Collins <firstname.lastname@example.org> Based on prior work by Arjan de Vet <Arjan.deVet@adv.iae.nl> This manual was written by Robert Collins <email@example.com> Amos Jeffries <firstname.lastname@example.org>
* Copyright (C) 1996-2015 The Squid Software Foundation and contributors * * Squid software is distributed under GPLv2+ license and includes * contributions from numerous individuals and organizations. * Please see the COPYING and CONTRIBUTORS files for details. This program and documentation is copyright to the authors named above. Distributed under the GNU General Public License (GNU GPL) version 2 or later (GPLv2+).
Questions on the usage of this program can be sent to the Squid Users mailing list <squid- email@example.com>
Bug reports need to be made in English. See http://wiki.squid- cache.org/SquidFaq/BugReporting for details of what you need to include with your bug report. Report bugs or bug fixes using http://bugs.squid-cache.org/ Report serious security bugs to Squid Bugs <firstname.lastname@example.org> Report ideas for new improvements to the Squid Developers mailing list <squid-dev@squid- cache.org>
squid(8), GPL(7), The Squid FAQ wiki http://wiki.squid-cache.org/SquidFaq The Squid Configuration Manual http://www.squid-cache.org/Doc/config/ digest_file_auth(8)