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125 Commits

Author SHA1 Message Date
Andreas Fackler f7d4860a94 Fix DHB test: wait for lagging nodes. 
The Dynamic Honey Badger tests would currently fail _without_ faulty
nodes, because with "first" delivery, all but the first _N - f_ nodes
are lagging indefinitely.

This change makes sure we give lagging nodes a chance to finish the first
phase of the test and arrive at the batch containing the completed
`Remove` event.
 2018-08-14 12:08:34 +02:00
DrPeterVanNostrand 8ab58d35d4 Added error handling for mlock errors in threshold_crypto crate. 2018-08-09 15:44:36 -04:00
Andreas Fackler 5cc7b54c06 Split up the broadcast module. 
Also, rename broadcast and agreement messages to just `Message`.
 2018-08-08 15:46:43 +02:00
Andreas Fackler 46a8728792 Split out Threshold Decryption from Honey Badger. 2018-08-06 10:50:30 -07:00
Nick Sanders c5977d1ab8
Revert "Reorganize `dynamic_honey_badger` and `agreement` modules slightly." 2018-08-02 12:24:25 -07:00
c0gent 7824b7a0ea
Reorganize `dynamic_honey_badger` and `agreement` modules slightly. 
* Move `CoinState` and `Agreement` definitions from `agreement/mod.rs`
  to `.../agreement.rs`.
* Move `DynamicHoneyBadger` definition from `dynamic_honey_badger/mod.rs`
  to `.../dynamic_honey_badger.rs`.
 2018-08-02 11:24:15 -07:00
Andreas Fackler eeb519862f Simplify Honey Badger tests and example. 2018-08-01 18:52:32 +02:00
Vladimir Komendantskiy 77ed1d50d4 separated crypto module into its own crate 2018-07-31 12:15:05 +01:00
Andreas Fackler 984bb49fdc Accept more types in threshold crypto API. 
This removes some unnecessary allocation and conversion by accepting
more primitive types and references as the index in threshold decryption
and signing, and as the argument to a polynomial.
 2018-07-23 15:56:45 +02:00
Andreas Fackler 432c865d4b Handle initial QHB messages, fix DHB. 2018-07-21 11:30:43 +02:00
Vladimir Komendantskiy 65b3097238 message queue refactoring WIP 2018-07-20 12:43:15 +01:00
Andreas Fackler d787173dd8 Rename DKG messages to Part and Ack. 2018-07-19 12:28:15 +02:00
Andreas Fackler 9159b42150 Add SyncKeyGen::into_network_info. 2018-07-19 12:18:01 +02:00
Andreas Fackler 52a684eb7f Add example code for `SyncKeyGen` to the docs. 2018-07-18 17:59:28 +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 9979e790aa added must_use to tests and removed Clone from FaultLog 2018-07-16 14:31:21 +01:00
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
Andreas Fackler 55ad2eae44 Fix DHB test with 1 validator; purge key gen msgs. 
This adds a bit of special handling to make sure messages don't stay in
the queue forever in the `dynamic_honey_badger` tests, even if there is
only one validator: the problem was that the single validator is always
ready for input, so it never processed incoming messages. However, to
add the new validator, it needs to process the joining node's key
generation messages.

`DynamicHoneyBadger` now also removes committed key generation messages
from the queue, to avoid committing duplicates.
 2018-07-15 12:12:27 +02:00
Vladimir Komendantskiy 72f7b1c06d
Merge branch 'master' into afck-dhb-votes 2018-07-14 08:20:02 +01:00
Vladimir Komendantskiy d7a2808774
Merge branch 'master' into vk-api-refactor66 2018-07-13 13:53:21 +01:00
Marc Brinkmann 591b546402 Removed unnecessary `Hash` where clause. 2018-07-13 13:27:49 +02:00
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
Marc Brinkmann 510c4478d4 Ensure the adversary is playing fair and give a more helpful error message if they are not. 2018-07-13 13:27:49 +02:00
Marc Brinkmann a0da8b7385 Added extended example for broadcast api and other docstrings. 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 1254d40147 fixed a starvation issue in Agreement when num_faulty=0 2018-07-12 15:12:06 +01:00
Vladimir Komendantskiy 0ba06fdb76 added step output in DistAlgorithm 2018-07-12 14:54:05 +01:00
c0gent f0ed2e6e12 Make `*HoneyBadger` types thread safe. 
Replaces `Rc` with `Arc`. This allows usage from different threads
which will be necessary for use with Parity.
 2018-07-11 16:28:41 -07:00
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
Peter van Nostrand 6783ece9b0 Added faulty node logging to algorithms. 2018-07-09 13:45:11 -04:00
Andreas Fackler 6248e4079f Fix Subset for a single validator. 2018-07-09 11:38:56 +02:00
Andreas Fackler 6f7245f123 Prefer HB::builder over HBBuilder::new. 2018-07-05 11:47:19 +02:00
Andreas Fackler 1a3016d94d Add Honey Badger builder. 2018-07-05 11:47:19 +02:00
Andreas Fackler 0f92010fe4 Add a max_future_epochs option to Honey Badger. 
This delays handling of messages from epochs that are too far ahead.
 2018-07-05 11:47:19 +02:00
Marc Brinkmann 60450d2c90 Reformatted using nightly rustfmt instead of stable rustfmt. 2018-07-05 10:12:57 +02:00
Marc Brinkmann 5e8b26cfc3 Implemented `Rand` for `SecretKey`. 2018-07-04 16:43:17 +02:00
Andreas Fackler 34385746c6 Add start_epoch option and DHB builder. 2018-07-02 14:14:19 +02:00
Andreas Fackler 11149c5e66 Communicate change state in Dynamic HB, add module docs. 2018-07-02 14:14:19 +02:00
Andreas Fackler 7a0b397233 Add node transaction messages to Dynamic HB. 2018-07-02 14:14:19 +02:00
Andreas Fackler 7a335c9771 Remove vote_counts field from dynamic HB. 2018-06-27 11:51:56 +02:00
Andreas Fackler 74fab61dd8 Fix Dynamic HB test. 2018-06-27 11:37:05 +02:00
Andreas Fackler fd8e7a5900 Add DynamicHoneyBadger. 2018-06-26 15:13:04 +02:00
Andreas Fackler 78fdf63540
Merge pull request #83 from poanetwork/afck-observer 
Allow observer nodes in all algorithms.
 2018-06-26 15:12:46 +02:00
Vladimir Komendantskiy 6ce6899ca9 added output sequence verification in HoneyBadger test 2018-06-26 12:15:30 +01:00
Andreas Fackler 2a5f9f1bfe Allow observer nodes in all algorithms. 
This allows nodes to join the network without sending any messages
themselves. They can't give any input and just observe the outcome.

Closes #81
 2018-06-26 09:17:12 +02:00