====Source====
[[http://mushpup.org/js_bin/mushpupsha24.js]]
see also: [[http://mushpup.org/js_bin/sha1.js]]

====Code====
%%

/*** DOCUMENTATION LAYER

MUSHPuP Implementation of SHA-1 Algorithm

File: mushpupsha24.js
Last Update: Jul 2006
Author: Tom at klenwell@gmail.com
License: BSD (See Bottom for Full License)

FUNCTIONS:

mushpup_sha24(str)


NOTES:

To link: <script type="text/javascript" src="path/to/file.js"></script>

______________________________________________________________________________*/



// mushpup_sha24
/* a slightly modified version of Sha-1 Hashing Function that returns a 24-char alphanumeric hash */
/*____________________________________________________________________________*/
function mushpup_sha24(str)
{
// *** DATA

// Internal
hash_b64 = '';
hash_b64t = '';
hash_b64tl = '';

// Return
hash = '';


// *** MANIPULATE

// Get Base-64 Hash
hash_b64 = b64_sha1(str);

// Replace + with t
hash_b64t = hash_b64.replace(/\+/g, 't');
hash_b64tl = hash_b64t.replace(/\//g, 'l');
hash = hash_b64tl.substr(0,24);

// *** RETURN

return hash;


} // end Fx
/*____________________________________________________________________________*/


/*** LICENSE (http://www.opensource.org/licenses/bsd-license.php)

Copyright (c) 2006, Tom at klenwell@gmail.com
http://www.mushpup.org/
All rights reserved.

Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.

* Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.

* Neither the name of Wired Jaw Technologies nor the names of its contributors
may be used to endorse or promote products derived from this software without
specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
OF THE POSSIBILITY OF SUCH DAMAGE.
______________________________________________________________________________*/


%%