Since the information exchanged between the pool and the miner is public, all that's needed is a mutual private MAC key that authenticates messages. This requires a registration step, that can be done only once using a simple web interface over https to the miner website. But the miner website is not the miner server, so the worst DoS would be preventing new miners to join the pool, which is not very often. The MAC key can be provided directly by the miner. And the pool associates the MAC key with a Bitcoin public address. The overhead would be minimal.
-Sergio. ------------------------------------------------------------------------------ _______________________________________________ Bitcoin-development mailing list Bitcoin-development@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bitcoin-development
