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reformatted md5

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This commit is contained in:
Andris Reinman 2018-09-11 16:03:54 +03:00
parent 202d8d29a4
commit 8789cce45f
1 changed files with 200 additions and 140 deletions
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142
lib/md5/cryptmd5.js
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@ -1,3 +1,6 @@
/* eslint no-bitwise: 0*/
'use strict';
/*-
* Copyright (c) 2003 Poul-Henning Kamp
* All rights reserved.
@ -25,17 +28,17 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
var crypto = require('crypto');
let crypto = require('crypto');
// http://code.activestate.com/recipes/325204-passwd-file-compatible-1-md5-crypt/
// http://www.freebsd.org/cgi/cvsweb.cgi/~checkout~/src/lib/libcrypt/crypt.c?rev=1.2&content-type=text/plain
// http://www.freebsd.org/cgi/cvsweb.cgi/~checkout~/src/lib/libcrypt/crypt-md5.c
exports.cryptMD5 = function(pw, salt) {
var magic = '$1$';
var fin;
var sp = salt || generateSalt(8);
let magic = '$1$';
let fin;
let sp = salt || generateSalt(8);
var ctx = crypto.createHash('md5');
let ctx = crypto.createHash('md5');
// The password first, since that is what is most unknown
// Then our magic string
@ -43,14 +46,14 @@ exports.cryptMD5 = function(pw, salt) {
ctx.update(pw + magic + sp);
// Then just as many characters of the MD5(pw,sp,pw)
var ctx1 = crypto.createHash('md5');
let ctx1 = crypto.createHash('md5');
ctx1.update(pw);
ctx1.update(sp);
ctx1.update(pw);
var fin = ctx1.digest("binary");
fin = ctx1.digest('binary');
for(var i = 0; i < pw.length ; i++) {
ctx.update(fin.substr(i % 16, 1),'binary');
for (let i = 0; i < pw.length; i++) {
ctx.update(fin.substr(i % 16, 1), 'binary');
}
// Then something really weird...
@ -58,20 +61,19 @@ exports.cryptMD5 = function(pw, salt) {
// Also really broken, as far as I can tell. -m
// Agreed ;) -dd
for (var i = pw.length; i; i >>= 1) {
ctx.update ( (i & 1) ? "\x00" : pw[0] );
for (let i = pw.length; i; i >>= 1) {
ctx.update(i & 1 ? '\x00' : pw[0]);
}
fin = ctx.digest("binary");
fin = ctx.digest('binary');
// and now, just to make sure things don't run too fast
for (var i = 0; i < 1000; i++) {
var ctx1 = crypto.createHash('md5');
for (let i = 0; i < 1000; i++) {
let ctx1 = crypto.createHash('md5');
if (i & 1) {
ctx1.update(pw);
} else {
ctx1.update(fin,'binary');
ctx1.update(fin, 'binary');
}
if (i % 3) {
@ -83,58 +85,116 @@ exports.cryptMD5 = function(pw, salt) {
}
if (i & 1) {
ctx1.update(fin,'binary');
ctx1.update(fin, 'binary');
} else {
ctx1.update(pw);
}
fin = ctx1.digest("binary")
fin = ctx1.digest('binary');
}
return magic + sp + '$' + to64(fin);
}
};
function to64(data) {
// This is the bit that uses to64() in the original code.
var itoa64 = ['.','/','0','1','2','3','4','5','6','7','8','9','A','B','C','D',
'E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T',
'U','V','W','X','Y','Z','a','b','c','d','e','f','g','h','i','j',
'k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'];
let itoa64 = [
'.',
'/',
'0',
'1',
'2',
'3',
'4',
'5',
'6',
'7',
'8',
'9',
'A',
'B',
'C',
'D',
'E',
'F',
'G',
'H',
'I',
'J',
'K',
'L',
'M',
'N',
'O',
'P',
'Q',
'R',
'S',
'T',
'U',
'V',
'W',
'X',
'Y',
'Z',
'a',
'b',
'c',
'd',
'e',
'f',
'g',
'h',
'i',
'j',
'k',
'l',
'm',
'n',
'o',
'p',
'q',
'r',
's',
't',
'u',
'v',
'w',
'x',
'y',
'z'
];
var rearranged = '';
let rearranged = '';
var opt = [[0, 6, 12], [1, 7, 13], [2, 8, 14], [3, 9, 15], [4, 10, 5]];
let opt = [[0, 6, 12], [1, 7, 13], [2, 8, 14], [3, 9, 15], [4, 10, 5]];
for (var p in opt) {
var l = data.charCodeAt( opt[p][0] ) << 16 | data.charCodeAt( opt[p][1] ) << 8 | data.charCodeAt( opt[p][2] );
for (let p in opt) {
let l = (data.charCodeAt(opt[p][0]) << 16) | (data.charCodeAt(opt[p][1]) << 8) | data.charCodeAt(opt[p][2]);
for (var i = 0; i < 4; i++) {
rearranged += itoa64[l & 0x3f]; l >>= 6
for (let i = 0; i < 4; i++) {
rearranged += itoa64[l & 0x3f];
l >>= 6;
}
}
var l = data.charCodeAt(11);
for (var i = 0; i < 2; i++) {
rearranged += itoa64[l & 0x3f]; l >>= 6
let l = data.charCodeAt(11);
for (let i = 0; i < 2; i++) {
rearranged += itoa64[l & 0x3f];
l >>= 6;
}
return rearranged;
}
var SaltLength = 8;
function generateSalt(len) {
var set = '0123456789abcdefghijklmnopqurstuvwxyzABCDEFGHIJKLMNOPQURSTUVWXYZ',
let set = '0123456789abcdefghijklmnopqurstuvwxyzABCDEFGHIJKLMNOPQURSTUVWXYZ',
setLen = set.length,
salt = '';
for (var i = 0; i < len; i++) {
var p = Math.floor(Math.random() * setLen);
for (let i = 0; i < len; i++) {
let p = Math.floor(Math.random() * setLen);
salt += set[p];
}
return salt;
}