createWEPKey([length])
Last updated September 21, 2004
Version: 1 | Requires: ColdFusion 5 | Library: SecurityLib
Description:
Creates a 40-bit or 128-bit WEP key. Use entirely at your own risk. No security is implied or provided by using this. This function simply creates a key for you.
Return Values:
Returns a string.
Example:
createWEPKey(128) returns: DAB9CF62B96D59DC0883A3AEA8
createWEPKey() returns: A156F82F5374722B6E1ADEB32B
Parameters:
| Name | Description | Required |
|---|---|---|
| length | Length of the WEP key. Either 40 or 128 (default). | No |
Full UDF Source:
<cfscript>
/**
* Creates a 40-bit or 128-bit WEP key.
*
* @param length Length of the WEP key. Either 40 or 128 (default). (Optional)
* @return Returns a string.
* @author Alan McCollough (amccollough@anmc.org)
* @version 1, January 12, 2006
*/
function createWEPKey() {
var baseKey = "";
var key = "";
var defaultLength = 128;
var length = defaultLength;
/* If user has passed in a specfic key length, and they want a 40-bit key,
change the value of length to 40 instead of 128.
Of course, a 40-bit WEP key is trivial to crack, but that is not my problem. */
if (arrayLen(arguments) eq 1) {
if(val(arguments[1]) eq 40)
length = 40;
}
/*
CF generated UUIDs look like this:
73B96C47-F5F1-0F5C-488C7C5170101FA0
8 chars - 4 chars - 4 chars - 16 chars
First off, generate a base key
*/
baseKey = mid(createUUID(),20,16) & mid(createUUID(),15,4) & mid(createUUID(),10,4) & mid(createUUID(),25,2);
/* Create a 40-bit or 128-bit key, as the user requested */
switch(length) {
case "40": {
key = mid(baseKey,10,10);
break;
}
case "128": {
key = baseKey;
break;
}
} //end switch
return key;
}
</cfscript>
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