def test_randao_reveal_validation(
is_valid,
epoch,
expected_epoch,
proposer_key_index,
expected_proposer_key_index,
privkeys,
pubkeys,
sample_fork_params,
genesis_state,
config,
):
state = genesis_state.set(
"slot", compute_start_slot_at_epoch(epoch, config.SLOTS_PER_EPOCH))
slots_per_epoch = config.SLOTS_PER_EPOCH
domain = get_domain(state, SignatureDomain.DOMAIN_RANDAO, slots_per_epoch)
signing_root = compute_signing_root(SerializableUint64(epoch), domain)
proposer_privkey = privkeys[proposer_key_index]
randao_reveal = bls.sign(proposer_privkey, signing_root)
try:
validate_randao_reveal(
state=state,
proposer_index=expected_proposer_key_index,
epoch=expected_epoch,
randao_reveal=randao_reveal,
slots_per_epoch=slots_per_epoch,
)
except ValidationError:
if is_valid:
raise
else:
if not is_valid:
pytest.fail("Did not raise")
def test_randao_reveal_validation(is_valid, epoch, expected_epoch,
proposer_key_index,
expected_proposer_key_index, privkeys,
pubkeys, sample_fork_params, config):
message_hash = epoch.to_bytes(32, byteorder="little")
slot = epoch * config.SLOTS_PER_EPOCH
fork = Fork(**sample_fork_params)
domain = get_domain(fork, slot, SignatureDomain.DOMAIN_RANDAO)
proposer_privkey = privkeys[proposer_key_index]
randao_reveal = bls.sign(
message_hash=message_hash,
privkey=proposer_privkey,
domain=domain,
)
expected_proposer_pubkey = pubkeys[expected_proposer_key_index]
try:
validate_randao_reveal(
randao_reveal=randao_reveal,
proposer_pubkey=expected_proposer_pubkey,
epoch=expected_epoch,
fork=fork,
)
except ValidationError:
if is_valid:
raise
else:
if not is_valid:
pytest.fail("Did not raise")
def process_randao(state: BeaconState, block: BaseBeaconBlock,
config: Eth2Config) -> BeaconState:
proposer_index = get_beacon_proposer_index(
state=state,
slot=state.slot,
committee_config=CommitteeConfig(config),
)
proposer = state.validator_registry[proposer_index]
epoch = state.current_epoch(config.SLOTS_PER_EPOCH)
validate_randao_reveal(
randao_reveal=block.randao_reveal,
proposer_index=proposer_index,
proposer_pubkey=proposer.pubkey,
epoch=epoch,
fork=state.fork,
)
randao_mix_index = epoch % config.LATEST_RANDAO_MIXES_LENGTH
new_randao_mix = bitwise_xor(
get_randao_mix(
state=state,
epoch=epoch,
slots_per_epoch=config.SLOTS_PER_EPOCH,
latest_randao_mixes_length=config.LATEST_RANDAO_MIXES_LENGTH,
),
hash_eth2(block.randao_reveal),
)
return state.copy(latest_randao_mixes=update_tuple_item(
state.latest_randao_mixes,
randao_mix_index,
new_randao_mix,
), )
def process_randao(state: BeaconState, block: BaseBeaconBlock,
config: Eth2Config) -> BeaconState:
proposer_index = get_beacon_proposer_index(
state=state, committee_config=CommitteeConfig(config))
epoch = state.current_epoch(config.SLOTS_PER_EPOCH)
validate_randao_reveal(
state=state,
proposer_index=proposer_index,
epoch=epoch,
randao_reveal=block.body.randao_reveal,
slots_per_epoch=config.SLOTS_PER_EPOCH,
)
randao_mix_index = epoch % config.EPOCHS_PER_HISTORICAL_VECTOR
new_randao_mix = bitwise_xor(
get_randao_mix(
state=state,
epoch=epoch,
epochs_per_historical_vector=config.EPOCHS_PER_HISTORICAL_VECTOR,
),
hash_eth2(block.body.randao_reveal),
)
return state.transform(("randao_mixes", randao_mix_index), new_randao_mix)
def test_randao_reveal_validation(is_valid,
epoch,
expected_epoch,
proposer_key_index,
expected_proposer_key_index,
privkeys,
pubkeys,
sample_fork_params,
genesis_state,
config):
state = genesis_state.copy(
slot=compute_start_slot_of_epoch(epoch, config.SLOTS_PER_EPOCH),
)
message_hash = epoch.to_bytes(32, byteorder="little")
slots_per_epoch = config.SLOTS_PER_EPOCH
domain = get_domain(
state,
SignatureDomain.DOMAIN_RANDAO,
slots_per_epoch,
)
proposer_privkey = privkeys[proposer_key_index]
randao_reveal = bls.sign(
message_hash=message_hash,
privkey=proposer_privkey,
domain=domain,
)
try:
validate_randao_reveal(
state=state,
proposer_index=expected_proposer_key_index,
epoch=expected_epoch,
randao_reveal=randao_reveal,
slots_per_epoch=slots_per_epoch,
)
except ValidationError:
if is_valid:
raise
else:
if not is_valid:
pytest.fail("Did not raise")
