core: check Chain Attack using Penalty System #1
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based on the PirlGuard by Pirl Team <[email protected]> Original authors: - 0x1337coding <[email protected]> - masterdubs <[email protected]> See also Penalty System by Horizon(Zencash) manually applied by hackmod <[email protected]> Sun Jan 6 22:55:53 2019 +0900 * extract routines as core/penaltysystem.go * small fix for geth-1.8.21 develop branch Co-authored-by: 0x1337coding <[email protected]> Co-authored-by: hackmod <[email protected]>
- remove not used difficultyWeight() - remove sort, blocks already sorted - check syncing status like as eth.syncing - use core.BadHashes to save possible attack hash
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attack detected (delayed chain detected. log bad hash detected (after delayed chain detected, bad hash at the fork block tip registered into the |
* log and metric some information * exit immediatly after CheckDelayedChain(chain) error
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- call CheckDelayedChain in reorg() - always log Chain split/reorg - add chain/reorg/add,drop metrics
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WIP
based on the PirlGuard by Pirl Team.
difficultyWeight()procFutureBlocks()https://github.com/ethereum/go-ethereum/blob/master/core/blockchain.go#L737-L744 )eth.syncingcore.BadHashesto save possible attack hash (could be extracted asconfig.BadHashes)Ideas
core.BadHashesconfigurable.See also
cc: @masterdubs, @0x1337coding
cc: @magnalucus @kimmyeonghun