The X-Lab - Experimental Development Repository

Key Generator
Category: generator
Language: HTML/Javascript
Description:
Generates fairly simple keys
Source Code:
<!--### Written by Micah Atwell - www.micahatwell.com/xlab ###-->
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
   <title></title>
   <meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1">
   <script type="text/javascript">
      <!--
         var letters=new Array('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');
         function gen(F){
            function rand(seed){return Math.round(Math.random()*seed);}
            function randLetter(){return letters[rand(letters.length-1)];}
            function randSpChr(){return scA[rand(scA.length-1)];}
            var
               key="",
               ln=Number(F.len_min.value),
               lx=Number(F.len_max.value),
               lc=(F.lcase.checked)?true:false,
               uc=(F.ucase.checked)?true:false,
               nm=F.num.value,
               sc=F.special.value,
               sq=Number(F.special_qty.value),
               sqC=0,
               scA=new Array(),
               rNX=(rand((lx-ln))+ln)-1; 
            for(var i=0;i<sc.length;i++)scA.push(sc[i]);// create array from special chars
            for(var i=0;i<=rNX;i++){
               var r=rand(8);
               if(r<4){
                  var l=randLetter();
                  if(uc && rand(9)<5)l=l.toUpperCase();
                  key+=l;
               }else if(r<7)key+=rand(9);
               else if(r<9){
                  if(sqC<sq){
                     key+=randSpChr();
                     sqC++;
                  }else key+=randLetter();
               }else{
                  alert("unexpected r: "+r);
                  return false;
               }
            }
            if(!lc)key=key.toUpperCase();
            F.ret_key.value=key;
            F.ret_key_len.value=key.length;
         }
      //-->
   </script>
   <style type="text/css">
      input[type=text]{padding-left:2px;font:12px monospace;}
   </style>
</head>
<body>
<form method="get" action="javascript:void(0);">
   Length min/max: <input type="text" name="len_min" size="2" value="8">
      <input type="text" name="len_max" size="2" value="16"><br>
   <label for="chk_lcase"><input type="checkbox" id="chk_lcase" name="lcase" checked> lowercase</label><br>
   <label for="chk_ucase"><input type="checkbox" id="chk_ucase" name="ucase"> uppercase</label><br>
   <label for="chk_num"><input type="checkbox" id="chk_num" name="num" checked> numbers</label><br>
   special chars: <input type="text" name="special" size="12" value="_">
      qty each: <input type="text" name="special_qty" size="2" value="1"><br>
   <hr>
   Key: <input type="text" name="ret_key" size="16" readonly>
      <input type="text" name="ret_key_len" size="2" readonly><br><br>
   <input type="button" value="generate" onclick="gen(this.form);">
   <input type="reset">
</form>
</body>
</html>