static function __static()
{
$self = new XPClass(__CLASS__);
foreach (hash_algos() as $algo) {
MessageDigest::register($algo, $self);
}
// Overwrite crc32b implementation if a buggy implementation is detected.
// Workaround for http://bugs.php.net/bug.php?id=45028
if ('0a1cb779' === hash('crc32b', 'AAAAAAAA')) {
MessageDigest::register('crc32b', ClassLoader::defineClass(__CLASS__ . '·CRC32bDigestImpl', $self->getName(), array(), '{
public function doFinal() {
$n= hexdec(hash_final($this->handle));
return sprintf("%08x", (($n & 0xFF) << 24) + (($n & 0xFF00) << 8) + (($n & 0xFF0000) >> 8) + (($n >> 24) & 0xFF));
}
}'));
}
}
public function unsupportedAlgorithm()
{
MessageDigest::newInstance('unsupported');
}
static function __static()
{
MessageDigest::register('crc16', new \lang\XPClass(__CLASS__));
}
/**
* Returns message digest
*
* @return security.checksum.MessageDigestImpl
*/
public static function digest()
{
return MessageDigest::newInstance('sha1');
}
/**
* Salts a given string with the given salt, injects an additional site-specific
* salt for maximum security.
*/
private function salt($str, $uniqueSalt)
{
return $uniqueSalt . $str . MessageDigest::siteSalt();
}
