function ivcs_transform_to($hex)
{
global $ivcs;
$boolArr = hexString_2_booleanArray($hex);
// Convert Hex input to an array of 1's and 0's
$boolArr = array_merge($boolArr, rfc2289_checksum($boolArr));
// append checksum to form 66 bit array
for ($i = 0; $i < 6; $i++) {
$arrSlice = array_slice($boolArr, $i * 11, 11);
// extract the 11 bits that we want
$index = binstr2int(implode($arrSlice));
// create an integer index from the bits
$word[$i] = $ivcs[$index];
// look up the code word
}
return $word;
}
function randomBooleanArray($numBits)
{
$bytesString = randomBytes($numBits);
$hexString = bin2Hex($bytesString);
$booleanArray = hexString_2_booleanArray($hexString);
return array_slice($booleanArray, 0, $numBits);
}
