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32 Commits

Author SHA1 Message Date
Andreas Fackler 7276621397 Rename uid to id. 2018-08-29 19:35:52 +02:00
Andreas Fackler f27eed4eef Rename input to handle_input. 
Also update `.gitignore` to avoid checking in test logs.
 2018-08-29 19:35:52 +02:00
c0gent 697ba6f0a8
Add common supertraits and rename related type parameters. 
* Add the `Contribution`, `NodeUidT`, and `Message` supertraits.
* Rename type parameters:
  * `Tx` -> `T` or `C`
  * `NodeUid` -> `N`
 2018-08-02 14:52:12 -07:00
Andreas Fackler d19afc2634 Change the QHB criterion for moving on to the next epoch. 
`QueueingHoneyBadger` now waits after an output, and only makes its
proposal for the next epoch when:

* there are pending transactions in the queue,
* there are pending key generation or vote messages, or
* _f + 1_ other validators have already made their proposal.

This rule should work well for small networks: With 1 - 3 nodes, it will
produce a new batch whenever at least one of them has transactions to
contribute. In larger networks, it prevents an adversary controlling _f_
nodes from producing lots of empty epochs.

An exception is made for a currently joining validator: We will commit
up to _(N + 1)² + 1_ key generation messages for them, which is the
maximum number a correct node will send.
 2018-08-01 18:52:32 +02:00
c0gent 847a79793e
Replace `chain_error` with `failure` 
Changes:

* Remove `error_chain` and convert errors to `failure` types.
* Add variants for each possible error generation point.
 2018-07-30 15:14:19 -07:00
Andreas Fackler 2b904e3490 Make sure QHB always inputs a new batch after output. 2018-07-24 14:46:48 +02:00
Andreas Fackler 9d0f1b3d15 Remove output and message queue from CommonSubset. 2018-07-24 13:12:06 +02:00
Andreas Fackler 432c865d4b Handle initial QHB messages, fix DHB. 2018-07-21 11:30:43 +02:00
Vladimir Komendantskiy a9346fa2a1 removed an accidental unused import from a merge conflict 2018-07-20 12:58:07 +01:00
Vladimir Komendantskiy bc245f2e67 added a Step for each module 2018-07-20 12:51:06 +01:00
Vladimir Komendantskiy 099fbc999e made Step depend on DistAlgorithm instead of base types 2018-07-20 12:47:19 +01:00
Vladimir Komendantskiy 17339c322c added a typedef for the Queueing HB propose result 2018-07-20 12:44:41 +01:00
Vladimir Komendantskiy 65b3097238 message queue refactoring WIP 2018-07-20 12:43:15 +01:00
Andreas Fackler 7820d5572a
Merge pull request #146 from poanetwork/afck-key-shares 
Separate keys and key shares.
 2018-07-19 10:24:10 +02:00
Andreas Fackler fb0e35deea Improve DHB docs, address review comments. 2018-07-18 21:41:21 +02:00
Andreas Fackler 466104bce6 Extend *honey_badger module docs. 2018-07-18 16:46:46 +02:00
Andreas Fackler 15cc6ffddd Separate keys and key shares. 2018-07-18 14:44:35 +02:00
Vladimir Komendantskiy f704b481ad Merge branch 'master' into vk-api-refactor66 2018-07-16 15:38:25 +01:00
Andreas Fackler 1f8373ef93 Add a `JoinPlan` to facilitate joining a running DHB network. 
With that, a node can join a running network as an observer in any epoch
where key generation starts.
 2018-07-16 16:03:36 +02:00
Vladimir Komendantskiy 22195c4b93 Merge branch 'master' into vk-api-refactor66 2018-07-16 14:20:50 +01:00
Vladimir Komendantskiy c6a0090859 removed cloning of FaultLog 2018-07-16 12:33:00 +01:00
Vladimir Komendantskiy 72f7b1c06d
Merge branch 'master' into afck-dhb-votes 2018-07-14 08:20:02 +01:00
Vladimir Komendantskiy db9191768b review comments 2018-07-13 22:53:44 +01:00
Vladimir Komendantskiy 03153cf788 Merge branch 'master' into vk-api-refactor66 2018-07-13 22:18:01 +01:00
c0gent 28da78c709
Add QueueingHoneyBadger::dyn_hb. 
Needed to retrieve netinfo.
 2018-07-13 08:31:03 -07:00
Vladimir Komendantskiy d7a2808774
Merge branch 'master' into vk-api-refactor66 2018-07-13 13:53:21 +01:00
Marc Brinkmann 5336fbe707 Added `RandomAdversary` and the necessary auxiliary functions. 
Random adversaries are created for `broadcast` and `honey_badger`.  Random value generation was added for all type-dependencies of these algorithms, causing the `Rand` trait to be implement for a large portion of the codebase.

Additionally, `MessageWithSender` turned into an actual struct, making it much easier to handle. Tuple-like construction is still available through `MessageWithSender::new()`.
 2018-07-13 13:27:49 +02:00
Vladimir Komendantskiy 7fb1017bb1 changed Step::output to Vec but that didn't fix the dynamic HB test 2018-07-12 21:23:52 +01:00
Andreas Fackler 3f3ac7be13 Minor fixes and simplifications. 
* Clear outdated key gen messages from the buffer.
* Process output after proposing, to make `HoneyBadger` work with a
  single validator.
* Print an error if threshold decryption fails.
* Verify decryption shares with the correct ciphertext.
* Insert all ciphertexts from an epoch at once; otherwise contributions
  can be omitted from a batch.
* Remove `BoolWithFaultLog`: It's easier to return a tuple, and it's
  used only in one place now.
* Avoid redundant signature verification in `VoteCounter`.
* Fix the tests for `QueueingHoneyBadger`.
* Use fewer network sizes to speed up tests a bit.
 2018-07-12 17:54:27 +02:00
Vladimir Komendantskiy 0ba06fdb76 added step output in DistAlgorithm 2018-07-12 14:54:05 +01:00
Andreas Fackler ca2dd2327e Add back InvalidNodeTransactionSignature fault. 
This was accidentally removed due to a merge conflict.
 2018-07-10 17:29:58 +02:00
Andreas Fackler c1b4381753 Separate queue from Honey Badger. 
This makes Honey Badger a bit more complicated but a lot more flexible:
It is now unaware of transactions and basically just runs one Subset
instance per epoch.

That way, users can use any kind of external queue, control throttling
and prioritization.
 2018-07-10 17:29:58 +02:00