Test the Sign flow across the Coordinators

This commit is contained in:
Luke Parker 2023-08-26 21:45:53 -04:00
parent 36b193992f
commit 72337b17f5
No known key found for this signature in database
2 changed files with 352 additions and 0 deletions

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@ -10,6 +10,9 @@ pub use key_gen::key_gen;
mod batch;
pub use batch::batch;
mod sign;
pub use sign::sign;
pub(crate) const COORDINATORS: usize = 4;
pub(crate) const THRESHOLD: usize = ((COORDINATORS * 2) / 3) + 1;

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@ -0,0 +1,349 @@
use std::{
time::Duration,
collections::{HashSet, HashMap},
};
use zeroize::Zeroizing;
use rand_core::{RngCore, OsRng};
use ciphersuite::{group::GroupEncoding, Ciphersuite, Secp256k1};
use dkg::Participant;
use serai_client::{
PairTrait, PairSigner,
primitives::{
NetworkId, Coin, Amount, Balance, BlockHash, SeraiAddress, ExternalAddress,
insecure_pair_from_name,
},
tokens::{
primitives::{OutInstruction, OutInstructionWithBalance},
TokensEvent,
},
in_instructions::primitives::{InInstruction, InInstructionWithBalance, Batch},
};
use messages::{sign::SignId, SubstrateContext, CoordinatorMessage};
use crate::{*, tests::*};
pub async fn sign<C: Ciphersuite>(
processors: &mut [Processor],
network_key: &Zeroizing<C::F>,
plan_id: [u8; 32],
) {
let id = SignId {
key: (C::generator() * **network_key).to_bytes().as_ref().to_vec(),
id: plan_id,
attempt: 0,
};
// Select a random participant to exclude, so we know for sure who *is* participating
assert_eq!(COORDINATORS - THRESHOLD, 1);
let excluded_signer =
usize::try_from(OsRng.next_u64() % u64::try_from(processors.len()).unwrap()).unwrap();
for (i, processor) in processors.iter_mut().enumerate() {
if i == excluded_signer {
continue;
}
processor
.send_message(messages::sign::ProcessorMessage::Preprocess {
id: id.clone(),
preprocess: [u8::try_from(i).unwrap(); 64].to_vec(),
})
.await;
}
// Before this plan is signed, the Tributary will agree the triggering Substrate block occurred,
// adding an extra step of latency
wait_for_tributary().await;
wait_for_tributary().await;
// Send from the excluded signer so they don't stay stuck
processors[excluded_signer]
.send_message(messages::sign::ProcessorMessage::Preprocess {
id: id.clone(),
preprocess: [u8::try_from(excluded_signer).unwrap(); 64].to_vec(),
})
.await;
// Read from a known signer to find out who was selected to sign
let known_signer = (excluded_signer + 1) % COORDINATORS;
let participants = match processors[known_signer].recv_message().await {
CoordinatorMessage::Sign(messages::sign::CoordinatorMessage::Preprocesses {
id: this_id,
preprocesses,
}) => {
assert_eq!(&id, &this_id);
assert_eq!(preprocesses.len(), THRESHOLD - 1);
assert!(!preprocesses
.contains_key(&Participant::new(u16::try_from(known_signer).unwrap() + 1).unwrap()));
let mut participants =
preprocesses.keys().map(|p| usize::from(u16::from(*p)) - 1).collect::<HashSet<_>>();
for (p, preprocess) in preprocesses {
assert_eq!(preprocess, vec![u8::try_from(u16::from(p)).unwrap() - 1; 64]);
}
participants.insert(known_signer);
participants
}
_ => panic!("coordinator didn't send back Preprocesses"),
};
for i in participants.clone() {
if i == known_signer {
continue;
}
let processor = &mut processors[i];
let mut preprocesses = participants
.clone()
.into_iter()
.map(|i| {
(
Participant::new(u16::try_from(i + 1).unwrap()).unwrap(),
[u8::try_from(i).unwrap(); 64].to_vec(),
)
})
.collect::<HashMap<_, _>>();
preprocesses.remove(&Participant::new(u16::try_from(i + 1).unwrap()).unwrap());
assert_eq!(
processor.recv_message().await,
CoordinatorMessage::Sign(messages::sign::CoordinatorMessage::Preprocesses {
id: id.clone(),
preprocesses
})
);
}
for i in participants.clone() {
let processor = &mut processors[i];
processor
.send_message(messages::sign::ProcessorMessage::Share {
id: id.clone(),
share: vec![u8::try_from(i).unwrap(); 32],
})
.await;
}
wait_for_tributary().await;
for i in participants.clone() {
let processor = &mut processors[i];
let mut shares = participants
.clone()
.into_iter()
.map(|i| {
(
Participant::new(u16::try_from(i + 1).unwrap()).unwrap(),
vec![u8::try_from(i).unwrap(); 32],
)
})
.collect::<HashMap<_, _>>();
shares.remove(&Participant::new(u16::try_from(i + 1).unwrap()).unwrap());
assert_eq!(
processor.recv_message().await,
CoordinatorMessage::Sign(messages::sign::CoordinatorMessage::Shares {
id: id.clone(),
shares,
})
);
}
// TODO: Completed flow
}
#[tokio::test]
async fn sign_test() {
let (processors, test) = new_test();
test
.run_async(|ops| async move {
// Wait for the Serai node to boot, and for the Tendermint chain to get past the first block
// TODO: Replace this with a Coordinator RPC
tokio::time::sleep(Duration::from_secs(150)).await;
// Sleep even longer if in the CI due to it being slower than commodity hardware
if std::env::var("GITHUB_CI") == Ok("true".to_string()) {
tokio::time::sleep(Duration::from_secs(120)).await;
}
// Connect to the Message Queues as the processor
let mut new_processors: Vec<Processor> = vec![];
for (handles, key) in processors {
new_processors.push(Processor::new(NetworkId::Bitcoin, &ops, handles, key).await);
}
let mut processors = new_processors;
let (substrate_key, network_key) = key_gen::<Secp256k1>(&mut processors).await;
// 'Send' external coins into Serai
let serai = processors[0].serai().await;
let (serai_pair, serai_addr) = {
let mut name = [0; 4];
OsRng.fill_bytes(&mut name);
let pair = insecure_pair_from_name(&hex::encode(name));
let address = SeraiAddress::from(pair.public());
// Fund the new account to pay for fees
serai
.publish(
&serai
.sign(
&PairSigner::new(insecure_pair_from_name("Ferdie")),
&Serai::transfer_sri(address, Amount(1_000_000_000)),
0,
Default::default(),
)
.unwrap(),
)
.await
.unwrap();
(PairSigner::new(pair), address)
};
#[allow(clippy::inconsistent_digit_grouping)]
let amount = Amount(1_000_000_00);
let balance = Balance { coin: Coin::Bitcoin, amount };
let coin_block = BlockHash([0x33; 32]);
let block_included_in = batch::<Secp256k1>(
&mut processors,
&substrate_key,
&network_key,
Batch {
network: NetworkId::Bitcoin,
id: 0,
block: coin_block,
instructions: vec![InInstructionWithBalance {
instruction: InInstruction::Transfer(serai_addr),
balance,
}],
},
)
.await;
let block_included_in_hash =
serai.get_block_by_number(block_included_in).await.unwrap().unwrap().hash();
assert_eq!(
serai.get_sri_balance(block_included_in_hash, serai_addr).await.unwrap(),
1_000_000_000
);
// Verify the mint occurred as expected
assert_eq!(
serai.get_mint_events(block_included_in_hash).await.unwrap(),
vec![TokensEvent::Mint { address: serai_addr, balance }]
);
assert_eq!(
serai.get_token_supply(block_included_in_hash, Coin::Bitcoin).await.unwrap(),
amount
);
assert_eq!(
serai.get_token_balance(block_included_in_hash, Coin::Bitcoin, serai_addr).await.unwrap(),
amount
);
// Trigger a burn
let out_instruction =
OutInstruction { address: ExternalAddress::new(b"external".to_vec()).unwrap(), data: None };
serai
.publish(
&serai
.sign(
&serai_pair,
&Serai::burn(balance, out_instruction.clone()),
0,
Default::default(),
)
.unwrap(),
)
.await
.unwrap();
// TODO: We *really* need a helper for this pattern
let mut last_serai_block = block_included_in;
'outer: for _ in 0 .. 20 {
tokio::time::sleep(Duration::from_secs(6)).await;
if std::env::var("GITHUB_CI") == Ok("true".to_string()) {
tokio::time::sleep(Duration::from_secs(6)).await;
}
while last_serai_block <= serai.get_latest_block().await.unwrap().number() {
let burn_events = serai
.get_burn_events(
serai.get_block_by_number(last_serai_block).await.unwrap().unwrap().hash(),
)
.await
.unwrap();
if !burn_events.is_empty() {
assert_eq!(burn_events.len(), 1);
assert_eq!(
burn_events[0],
TokensEvent::Burn {
address: serai_addr,
balance,
instruction: out_instruction.clone()
}
);
break 'outer;
}
last_serai_block += 1;
}
}
let last_serai_block = serai.get_block_by_number(last_serai_block).await.unwrap().unwrap();
let last_serai_block_hash = last_serai_block.hash();
assert_eq!(
serai.get_token_supply(last_serai_block_hash, Coin::Bitcoin).await.unwrap(),
Amount(0)
);
assert_eq!(
serai.get_token_balance(last_serai_block_hash, Coin::Bitcoin, serai_addr).await.unwrap(),
Amount(0)
);
let mut plan_id = [0; 32];
OsRng.fill_bytes(&mut plan_id);
let plan_id = plan_id;
// We should now get a SubstrateBlock
for processor in processors.iter_mut() {
assert_eq!(
processor.recv_message().await,
messages::CoordinatorMessage::Substrate(
messages::substrate::CoordinatorMessage::SubstrateBlock {
context: SubstrateContext {
serai_time: last_serai_block.time().unwrap() / 1000,
network_latest_finalized_block: coin_block,
},
network: NetworkId::Bitcoin,
block: last_serai_block.number(),
key: (Secp256k1::generator() * *network_key).to_bytes().to_vec(),
burns: vec![OutInstructionWithBalance {
instruction: out_instruction.clone(),
balance: Balance { coin: Coin::Bitcoin, amount }
}],
batches: vec![],
}
)
);
// Send the ACK, claiming there's a plan to sign
processor
.send_message(messages::ProcessorMessage::Coordinator(
messages::coordinator::ProcessorMessage::SubstrateBlockAck {
network: NetworkId::Bitcoin,
block: last_serai_block.number(),
plans: vec![plan_id],
},
))
.await;
}
sign::<Secp256k1>(&mut processors, &network_key, plan_id).await;
})
.await;
}