/** * Lookup OID. * * @param algorithmName Algorithm name. * @param winternitzParameter Winternitz parameter. * @return WOTS+ OID if parameters were found, null else. */ protected static WOTSPlusOid lookup(String algorithmName, int digestSize, int winternitzParameter, int len) { if (algorithmName == null) { throw new NullPointerException("algorithmName == null"); } return oidLookupTable.get(createKey(algorithmName, digestSize, winternitzParameter, len)); }