This code was used to demonstrate how to translate easy to remember simple (weak) passwords into more difficult to guess (strong) passwords. Example: Using Gmail I like an easy to remember password, I submit the password 'jr123' to the password_lookup.html page and what's returned to me is a stronger password 'NCC2SI1T'.
file: passwd_lookup.rb (generates an xml file containing an alphanumeric index with corresponding cryptic values)
class PasswordLookup
def initialize()
chars = (0..9).to_a + Array.new(7) + ('A'..'Z').to_a + Array.new(6) + ('a'..'z').to_a
@chars = (0..9).to_a + ('A'..'Z').to_a + ('a'..'z').to_a
@doc = Document.new()
root = Element.new('codes')
@doc.add_element(root)
chars.each do |char|
node = Element.new('code')
if not char.nil?
node.attributes['index'] = char
node.attributes['value'] = get_random_chars(2)
end
root.add_element(node)
end
puts root
end
def save(filepath)
file = File.new(filepath,'w')
file.puts @doc
file.close
end
def get_random_chars(vword_size)
newpass = Array.new(rand(vword_size) + 1, '').collect{@chars[rand(@chars.size)]}.join
if not /value=\'#{newpass}\'/.match @doc.root.elements.to_a.to_s
return newpass
else
return get_random_chars(vword_size)
end
end
private :get_random_chars
end
output extract: (codes - see also http://rorbuilder.info/pl/codes)
<codes>
<code value='4h' index='a'/><code value='B' index='b'/><code value='m' index='c'/>
<code value='qf' index='d'/>
</codes>
file: password_lookup.js
var t;
var m_doc;
function loadXml() {
url = 'http://rorbuilder.info/pl/codes';
m_doc = XML.load(url);
}
function getCode(val,i) {
pos = val.charCodeAt(i) - 48;
node = m_doc.documentElement.childNodes[pos]
return node.getAttribute('value');
}
function timed_update(keyCode, val) {
if (val.length > 0 && ((keyCode > 40) || (keyCode == 8)) ) {
clearTimeout(t);
t = setTimeout("revealCode('" + val + "')", 1000);
}
else
{
o = document.getElementById('out1');
if (val.length <= 0 && o.value.length > 0) {
o.value = '';
}
}
}
function revealCode(val) {
var iEnd = val.length;
var newcode = '';
for (i=0;i<iEnd;i++) {
var codex = getCode(val,i);
newcode += codex;
}
update(newcode);
}
function update(val){
o = document.getElementById('out1');
o.value = val;
/*var o_copied = document.getElementById('out1').createTextRange();
o_copied.exeCommand("Copy");*/
}
file: password_lookup.html
<body onload="loadXml()">
<h1>Password lookup</h1>
<dl>
<dt><label for="in1">Enter password:</label></dt>
<dd><input type="text" name="in1" id="in1" value=""
onkeyup="timed_update(event.keyCode, this.value)" /></dd>
<dt><label for="out1">Generated password</label></dt>
<dd><input type="text" name="out1" id="out1" value=""/></dd>
<dd><input type="button" name="clear1" id="clear1" onclick="clearPassword()" value="clear"/></dd>
</dl>
<p>see also: <a href="codes.xml" title="password code lookup table">codes.xml</a></p>
</body>
Try out the
encode a simple password demo [rorbuilder.info].
see also:
Reading an XML file usng JavaScript [snippets.dzone.com]
