C#

function gen_key(keyLengthInBytes) {<br />
	for (i = 0; i < keyLengthInBytes; i++)<br />
	{<br />
                // creates the ASCII version of the WEP key<br />
		ascWEPkey += charArray[gen_prn()];  <br />
	}<br />
<br />
	for (i = 0; i < ascWEPkey.length; i++)<br />
	{<br />
                // creates the HEX WEP key from the ASCII <br />
    	        hexWEPkey += ascWEPkey.charCodeAt(i).toString(16);<br />
	}<br />
}

private string ASCII_KEY, HEX_KEY;<br />
private char[] charArray = new char [95] { <br />
' ', '!', '"', '#', '$', '%', '&', '\'', '(', ')','*', '+', ',', '-', '.', '/', <br />
'0', '1', '2', '3', '4', '5', '6', '7','8', '9', ':', ';', '<', '=', '>', '?', <br />
'@', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', <br />
'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '[', '\\', ']', '^', '_', <br />
'\'', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', <br />
'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '{', '|', '}', '~'};<br />
<br />
private void GenerateWEPKey(int KeyLength) { //64 or 128<br />
    for (int i = 0; i < KeyLength; i++) {<br />
	ASCII_KEY += charArray[GenPseudoNo()];  // creates the ASCII version of the WEP key<br />
    }<br />
    for (int i = 0; i < ASCII_KEY.Length; i++) {<br />
	HEX_KEY += charCodeAt(ASCII_KEY,i);   // creates the HEX WEP key from the ASCII <br />
    }<br />
    //For testing purposes<br />
    MessageBox.Show(HEX_KEY);<br />
}<br />
<br />
private int GenPseudoNo() {<br />
    Random rdm = new Random();// generates a pseudo-random number<br />
    return (int)Math.Floor(rdm.NextDouble() * charArray.Length);// range is 0 ~ 94<br />
}<br />
<br />
private string charCodeAt(string ASCII, int index) {<br />
    System.Text.ASCIIEncoding AE = new System.Text.ASCIIEncoding ( );<br />
    byte [ ] alphabetArray = AE.GetBytes ( ASCII );<br />
    System.Text.StringBuilder sb = new System.Text.StringBuilder();<br />
<br />
    for ( int x = 0; x <= alphabetArray.Length - 1; x++ ) {<br />
        sb.Append ( string.Format ( "{0}", alphabetArray [ x ]));<br />
    }<br />
    return sb.ToString(index,2);<br />
}