-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Potentially relevant...
"Incentivizing the running of full nodes" https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2014-June/006028 .html (However, the issue to which I referred here is now closed) View whole thread: https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2014-June/thread .html#6028 On 08/17/2015 02:44 PM, Chris Pacia via bitcoin-dev wrote: > > On Aug 17, 2015 5:29 PM, "Peter Todd via bitcoin-dev" > <bitcoin-dev@lists.linuxfoundation.org > <mailto:bitcoin-dev@lists.linuxfoundation.org>> wrote: From the > point of view of a >> wallet, it's not very secure to use Hearn-style SPV mode, and >> volunteers running full nodes doesn't help things. Sybil >> attacking the IP address space is pretty easy in comparison to >> aquiring hashing power sufficient to create false confirmations, >> so any attacker able to do the former will likely be running the >> full node you're connecting too anyway. Ultimately, Hearn-style >> SPV is a close approximation to just trusting anyone with a >> non-trivial amount of hashing power. (and getting that is >> surprisingly easy, e.g. w/ SPV mining) > > Can you explain how the spv node fails against an attacker with a > non-trivial amount of hash power where a full node doesn't? To > attack an spv wallet that is waiting for 6 or 10 confirmations, you > would not only need to Sybil them but also summon a massive amount > of hashing power to create a chain of headers (while forgoing the > opportunity to mine valid blocks with that hash power). > > But could someone with that much hash power not Sybil a full node > and give them a chain for valid blocks (but on an orphan fork)? The > failure model doesn't seem specific to spv to me. > > > > _______________________________________________ bitcoin-dev mailing > list bitcoin-dev@lists.linuxfoundation.org > https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev > - -- http://abis.io ~ "a protocol concept to enable decentralization and expansion of a giving economy, and a new social good" https://keybase.io/odinn -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAEBAgAGBQJV1BJLAAoJEGxwq/inSG8CUAoH/3SwFKxhRBFA8SFAj7ia2Af8 ITEOkLyNM23lxW4yUdHhxtPiHbvXDXctZ9LESgp39kmE3MEYZW7IhcmJ7WRBNNVq sTXANa5B/o+LwYbVDdS8Rt/p8dTs+xxPWreuycLJFwoOFbhbqp8wFqdJvZb/w45F MSTBeXUOVr65sBW5zSrindGxCzmi33b9FoTWHdZ0wQtyDInk3goixWFRJ5n95/nI msA8iIDvPQBv0naXR9/3CiEvJz274TSBvlvhOR5IBKTv9pxamX/fjWDUe/Z6uyg1 3469EtimDb+BVhlEvcPPJBOwAOKQnRLdi2N4xVg+2csFtknBkc45uuxjvaq/yis= =75Cp -----END PGP SIGNATURE----- _______________________________________________ bitcoin-dev mailing list bitcoin-dev@lists.linuxfoundation.org https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev
