@Override
public SSKBlock construct(byte[] data, byte[] headers,
byte[] routingKey, byte[] fullKey,
boolean canReadClientCache, boolean canReadSlashdotCache, BlockMetadata meta, DSAPublicKey knownPublicKey)
throws SSKVerifyException {
if(data == null || headers == null) throw new SSKVerifyException("Need data and headers");
if(fullKey == null) throw new SSKVerifyException("Need full key to reconstruct an SSK");
NodeSSK key;
key = NodeSSK.construct(fullKey);
if(knownPublicKey != null)
key.setPubKey(knownPublicKey);
else if(!key.grabPubkey(pubkeyCache, canReadClientCache, canReadSlashdotCache, meta))
throw new SSKVerifyException("No pubkey found");
SSKBlock block = new SSKBlock(data, headers, key, false);
return block;
}