84 lines
2.3 KiB
JavaScript
84 lines
2.3 KiB
JavaScript
/*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Copyright (C) 2011-2012 Joshua M. Clulow <josh@sysmgr.org>
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*/
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var crypto = require('crypto');
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var $ = require('./common');
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/*
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* Generate the LM Hash
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*/
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function lmhashbuf(inputstr)
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{
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/* ASCII --> uppercase */
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var x = inputstr.substring(0, 14).toUpperCase();
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var xl = Buffer.byteLength(x, 'ascii');
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/* null pad to 14 bytes */
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var y = new Buffer(14);
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y.write(x, 0, xl, 'ascii');
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y.fill(0, xl);
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/* insert odd parity bits in key */
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var halves = [
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$.oddpar($.expandkey(y.slice(0, 7))),
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$.oddpar($.expandkey(y.slice(7, 14)))
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];
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/* DES encrypt magic number "KGS!@#$%" to two
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* 8-byte ciphertexts, (ECB, no padding)
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*/
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var buf = new Buffer(16);
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var pos = 0;
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var cts = halves.forEach(function(z) {
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var key = z.toString('binary');
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var des = crypto.createCipheriv('DES-ECB', key, '');
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var str = des.update('KGS!@#$%', 'binary', 'binary');
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buf.write(str, pos, pos + 8, 'binary');
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pos += 8;
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});
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/* concat the two ciphertexts to form 16byte value,
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* the LM hash */
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return buf;
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}
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function nthashbuf(str)
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{
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/* take MD4 hash of UCS-2 encoded password */
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var ucs2 = new Buffer(str, 'ucs2');
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var md4 = crypto.createHash('md4');
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md4.update(ucs2);
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return new Buffer(md4.digest('binary'), 'binary');
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}
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function lmhash(is)
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{
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return $.bintohex(lmhashbuf(is));
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}
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function nthash(is)
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{
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return $.bintohex(nthashbuf(is));
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}
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module.exports.nthashbuf = nthashbuf;
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module.exports.lmhashbuf = lmhashbuf;
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module.exports.nthash = nthash;
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module.exports.lmhash = lmhash;
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module.exports.ntlm = require('./ntlm');
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