Add PreparationHash field to PrepareResponse to prevent replay attacks from malicious primary
#576
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…tacks from malicious primary
shargon
reviewed
Jan 25, 2019
vncoelho
approved these changes
Jan 25, 2019
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Erik, I like it, it moved one step toward the Regeneration.
However, I still fell the need of storing the signature instead of the Hash.
Both (signature and hash) will cost almost the same to store and the signature of the Payload promotes us several other benefits.
| @@ -289,10 +293,12 @@ private void OnPrepareRequestReceived(ConsensusPayload payload, PrepareRequest m | |||
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| private void OnPrepareResponseReceived(ConsensusPayload payload, PrepareResponse message) | |||
| { | |||
| if (context.Preparations[payload.ValidatorIndex]) return; | |||
| if (context.Preparations[payload.ValidatorIndex] != null) return; | |||
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Erik, in #426 we had an speed up here.
If the OnPrepareResponseReceived arrives first we were able to use it as the OnPrepareRequest beucase the PrepareResponse carried the partial signature of the Speaker.
jsolman
suggested changes
Jan 25, 2019
jsolman
approved these changes
Jan 27, 2019
erikzhang
pushed a commit
that referenced
this pull request
Mar 3, 2019
* Add commit phase to consensus algorithm (#534) * Add commit phase to consensus algorithm * fix tests * Prevent repeated sending of `Commit` messages * RPC call gettransactionheight (#541) * getrawtransactionheight Nowadays two calls are need to get a transaction height, `getrawtransaction` with `verbose` and then use the `blockhash`. Other option is to use `confirmations`, but it can be misleading. * Minnor fix * Shargon's tip * modified * Allow to use the wallet inside a RPC plugin (#536) * Clean code * Clean code * Minor fix on mempoolVerified * Add MemoryPool Unit tests. Fix bug on initital start of Persisting the Genesis block. * Prevent `ConsensusService` from receiving messages before starting (#573) * Prevent `ConsensusService` from receiving messages before starting * fixed tests - calling OnStart now * Consensus recovery log (#572) * Pass store to `ConsensusService` * Implement `ISerializable` in `ConsensusContext` * Start from recovery log * Fix unit tests due to constructor taking the store. * Add unit tests for serializing and deserializing the consensus context. * Combine `ConsensusContext.ChangeView()` and `ConsensusContext.Reset()` * Add `PreparationHash` field to `PrepareResponse` to prevent replay attacks from malicious primary (#576) * Fixed a problem where `PrepareResponse.PreparationHash` was not assigned. * Load context from store only when height matches * Recover nodes requesting ChangeView when possible (#579) * Fixes bug in `OnPrepareRequestReceived()` * Send `RecoveryMessage` only when `message.NewViewNumber <= context.ViewNumber` * Fix and optimize view changing (#590) * Allow to ignore the recovery logs * Add `isRecovering` (#594) * Fix accepting own prepare request (#596) * Pick some changes from #575. * Fixes `Prefixes` * Restore transactions from saved consensus context (#598) * Refactoring * AggressiveInlining (#606) * Reset Block reference when consensus context is initialized after block persist. (#608) * Change `ConsensusPayload` for compatibility (#609)
Thacryba
pushed a commit
to simplitech/neo
that referenced
this pull request
Feb 17, 2020
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