else if (macName.toLowerCase().startsWith(Registry.OMAC_PREFIX))
{
IBlockCipher cipher = CipherFactory.getInstance(
macName.substring(Registry.OMAC_PREFIX.length()));
if (cipher != null)
kb = new byte[cipher.defaultKeySize()];
else
kb = new byte[gnu.macSize()];
}
else
kb = new byte[gnu.macSize()];