Generating random password in Coldfusion 9

This coldfusion code can create a random password with rules.

"border:
 1px dashed rgb(153, 153, 153); padding: 5px; overflow: auto; 
font-family: Andale Mono,Lucida Console,Monaco,fixed,monospace; color: 
rgb(0, 0, 0); background-color: rgb(238, 238, 238); font-size: 12px; 
line-height: 14px; width: 100%;">






/**
        Generates a random password using set of characters
        @output false
    **/
    public string function getRandomPassword()
    {
        // Set up available lower case values.
        var strLowerCaseAlpha = "abcdefghijklmnopqrstuvwxyz";
         
        // Set up available upper case values.
        var strUpperCaseAlpha = UCase( strLowerCaseAlpha );
         
        // Set up available numbers.
        var strNumbers = "0123456789";
         
        // Set up additional valid password chars.
        var strOtherChars = "~!@##$%^&*";
        
        var strAllValidChars = (strLowerCaseAlpha & strUpperCaseAlpha & strNumbers & strOtherChars);
        
        // Create an array to contain the password ( think of a string as an array of character).
        var arrPassword = ArrayNew( 1 );
        
        /**
        Password
        - must be exactly 8 characters in length
        - must have at least 1 number
        - must have at least 1 uppercase letter
        - must have at least 1 lower case letter
        **/
        
        // Select the random number from our number set.
        arrPassword[ 1 ] = Mid(strNumbers,RandRange( 1, Len( strNumbers ) ),1);
         
        // Select the random letter from our lower case set.
        arrPassword[ 2 ] = Mid(strLowerCaseAlpha,RandRange( 1, Len( strLowerCaseAlpha ) ),1);
         
        // Select the random letter from our upper case set.
        arrPassword[ 3 ] = Mid(strUpperCaseAlpha,RandRange( 1, Len( strUpperCaseAlpha ) ),1);
        
        // Create rest of the password.
        for (intChar = (ArrayLen( arrPassword ) + 1); intChar LTE 8; intChar ++)
        {
            //Pick random value.
            arrPassword[ intChar ] = Mid(strAllValidChars,RandRange( 1, Len( strAllValidChars ) ),1);
        }
        
        // Uses the Java Collections utility class to shuffle the array into a "random" order.
        CreateObject( "java", "java.util.Collections" ).Shuffle(arrPassword);
         
         
        // Join all the characters into a single string.
        strPassword = ArrayToList(arrPassword,"");
        
        return strPassword;
    }

Categories: Coldfusion