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dashley |
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<?php
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//$Header: /hl/cvsroots/gpl01/gpl01/webprojs/fboprime/sw/phplib/crhsh.inc,v 1.4 2006/04/08 07:14:16 dashley Exp $
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//********************************************************************************
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//Copyright (C)2006 David T. Ashley
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//********************************************************************************
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//This program or source file is free software; you can redistribute it and/or
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//modify it under the terms of the GNU General Public License as published by
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//the Free Software Foundation; either version 2 of the License, or (at your
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//option) any later version.
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//
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//This program or source file is distributed in the hope that it will
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//be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
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//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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//GNU General Public License for more details.
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//
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//You may have received a copy of the GNU General Public License
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//along with this program; if not, write to the Free Software
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//Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//********************************************************************************
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//Dave Ashley, 04/06
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//
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//This source file contains cryptographic hash function(s).
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//
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//The site hash key must be included, as this is used for all hashing functions.
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//
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require_once("sitehashkey.inc");
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//
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//As it turns out, because PHP provides for functions with variable numbers of arguments,
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//only one function is required to meet all cryptographic hashing functions.
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//
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//--------------------------------------------------------------------------------
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//The return value is an MD5 hash of the arguments intermingled with the key.
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//
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//The function is always deterministic (the same inputs will always produce the same
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//output).
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//
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//Unit-tested 20060408.
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//
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function CRHSH_hashva()
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{
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$input = SITEHASHKEY_SITEHASHKEY;
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$num_args = func_num_args();
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for ($i=0; $i<$num_args; $i++)
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{
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$input .= ((string) func_get_arg($i));
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$input .= SITEHASHKEY_SITEHASHKEY;
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}
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$rv = md5($input);
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return($rv);
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}
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//--------------------------------------------------------------------------------
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?>
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