/*
http://github.com/danpalmer/jquery.complexify.js
This code is distributed under the WTFPL v2:
*/
(function ($) {
$.fn.extend({
complexify: function(options, callback) {
var MIN_COMPLEXITY = 49; // 12 chars with Upper, Lower and Number
var MAX_COMPLEXITY = 120; // 25 chars, all charsets
var CHARSETS = [
// Commonly Used
////////////////////
[0x0030, 0x0039], // Numbers
[0x0041, 0x005A], // Uppercase
[0x0061, 0x007A], // Lowercase
[0x0021, 0x002F], // Punctuation
[0x003A, 0x0040], // Punctuation
[0x005B, 0x0060], // Punctuation
[0x007B, 0x007E], // Punctuation
// Everything Else
////////////////////
[0x0080, 0x00FF], // Latin-1 Supplement
[0x0100, 0x017F], // Latin Extended-A
[0x0180, 0x024F], // Latin Extended-B
[0x0250, 0x02AF], // IPA Extensions
[0x02B0, 0x02FF], // Spacing Modifier Letters
[0x0300, 0x036F], // Combining Diacritical Marks
[0x0370, 0x03FF], // Greek
[0x0400, 0x04FF], // Cyrillic
[0x0530, 0x058F], // Armenian
[0x0590, 0x05FF], // Hebrew
[0x0600, 0x06FF], // Arabic
[0x0700, 0x074F], // Syriac
[0x0780, 0x07BF], // Thaana
[0x0900, 0x097F], // Devanagari
[0x0980, 0x09FF], // Bengali
[0x0A00, 0x0A7F], // Gurmukhi
[0x0A80, 0x0AFF], // Gujarati
[0x0B00, 0x0B7F], // Oriya
[0x0B80, 0x0BFF], // Tamil
[0x0C00, 0x0C7F], // Telugu
[0x0C80, 0x0CFF], // Kannada
[0x0D00, 0x0D7F], // Malayalam
[0x0D80, 0x0DFF], // Sinhala
[0x0E00, 0x0E7F], // Thai
[0x0E80, 0x0EFF], // Lao
[0x0F00, 0x0FFF], // Tibetan
[0x1000, 0x109F], // Myanmar
[0x10A0, 0x10FF], // Georgian
[0x1100, 0x11FF], // Hangul Jamo
[0x1200, 0x137F], // Ethiopic
[0x13A0, 0x13FF], // Cherokee
[0x1400, 0x167F], // Unified Canadian Aboriginal Syllabics
[0x1680, 0x169F], // Ogham
[0x16A0, 0x16FF], // Runic
[0x1780, 0x17FF], // Khmer
[0x1800, 0x18AF], // Mongolian
[0x1E00, 0x1EFF], // Latin Extended Additional
[0x1F00, 0x1FFF], // Greek Extended
[0x2000, 0x206F], // General Punctuation
[0x2070, 0x209F], // Superscripts and Subscripts
[0x20A0, 0x20CF], // Currency Symbols
[0x20D0, 0x20FF], // Combining Marks for Symbols
[0x2100, 0x214F], // Letterlike Symbols
[0x2150, 0x218F], // Number Forms
[0x2190, 0x21FF], // Arrows
[0x2200, 0x22FF], // Mathematical Operators
[0x2300, 0x23FF], // Miscellaneous Technical
[0x2400, 0x243F], // Control Pictures
[0x2440, 0x245F], // Optical Character Recognition
[0x2460, 0x24FF], // Enclosed Alphanumerics
[0x2500, 0x257F], // Box Drawing
[0x2580, 0x259F], // Block Elements
[0x25A0, 0x25FF], // Geometric Shapes
[0x2600, 0x26FF], // Miscellaneous Symbols
[0x2700, 0x27BF], // Dingbats
[0x2800, 0x28FF], // Braille Patterns
[0x2E80, 0x2EFF], // CJK Radicals Supplement
[0x2F00, 0x2FDF], // Kangxi Radicals
[0x2FF0, 0x2FFF], // Ideographic Description Characters
[0x3000, 0x303F], // CJK Symbols and Punctuation
[0x3040, 0x309F], // Hiragana
[0x30A0, 0x30FF], // Katakana
[0x3100, 0x312F], // Bopomofo
[0x3130, 0x318F], // Hangul Compatibility Jamo
[0x3190, 0x319F], // Kanbun
[0x31A0, 0x31BF], // Bopomofo Extended
[0x3200, 0x32FF], // Enclosed CJK Letters and Months
[0x3300, 0x33FF], // CJK Compatibility
[0x3400, 0x4DB5], // CJK Unified Ideographs Extension A
[0x4E00, 0x9FFF], // CJK Unified Ideographs
[0xA000, 0xA48F], // Yi Syllables
[0xA490, 0xA4CF], // Yi Radicals
[0xAC00, 0xD7A3], // Hangul Syllables
[0xD800, 0xDB7F], // High Surrogates
[0xDB80, 0xDBFF], // High Private Use Surrogates
[0xDC00, 0xDFFF], // Low Surrogates
[0xE000, 0xF8FF], // Private Use
[0xF900, 0xFAFF], // CJK Compatibility Ideographs
[0xFB00, 0xFB4F], // Alphabetic Presentation Forms
[0xFB50, 0xFDFF], // Arabic Presentation Forms-A
[0xFE20, 0xFE2F], // Combining Half Marks
[0xFE30, 0xFE4F], // CJK Compatibility Forms
[0xFE50, 0xFE6F], // Small Form Variants
[0xFE70, 0xFEFE], // Arabic Presentation Forms-B
[0xFEFF, 0xFEFF], // Specials
[0xFF00, 0xFFEF], // Halfwidth and Fullwidth Forms
[0xFFF0, 0xFFFD] // Specials
];
var defaults = {
minimumChars: 8,
strengthScaleFactor: 1,
bannedPasswords: COMPLEXIFY_BANLIST,
banmode: 'strict' // (strict|loose)
};
if($.isFunction(options) && !callback) {
callback = options;
options = {};
}
options = $.extend(defaults, options);
function additionalComplexityForCharset(str, charset) {
for (var i = str.length - 1; i >= 0; i--) {
if (charset[0] <= str.charCodeAt(i) && str.charCodeAt(i) <= charset[1]) {
return charset[1] - charset[0] + 1;
}
}
return 0;
}
function inBanlist(str) {
if (options.banmode === 'strict') {
for (var i = 0; i < options.bannedPasswords.length; i++) {
if (options.bannedPasswords[i].indexOf(str) !== -1) {
return true;
}
}
return false;
} else {
return $.inArray(str, options.bannedPasswords) > -1 ? true : false;
}
}
function evaluateSecurity() {
var password = $(this).val();
var complexity = 0, valid = false;
// Reset complexity to 0 when banned password is found
if (!inBanlist(password)) {
// Add character complexity
for (var i = CHARSETS.length - 1; i >= 0; i--) {
complexity += additionalComplexityForCharset(password, CHARSETS[i]);
}
} else {
complexity = 1;
}
// Use natural log to produce linear scale
complexity = Math.log(Math.pow(complexity, password.length)) * (1/options.strengthScaleFactor);
valid = (complexity > MIN_COMPLEXITY && password.length >= options.minimumChars);
// Scale to percentage, so it can be used for a progress bar
complexity = (complexity / MAX_COMPLEXITY) * 100;
complexity = (complexity > 100) ? 100 : complexity;
callback.call(this, valid, complexity);
}
return this.each(function () {
$(this).bind('keyup focus', evaluateSecurity);
});
}
});
})(jQuery);
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