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Merge pull request #2609 from ethereum/fix-random

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Fix random validation
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Mikhail Kalinin 2021-09-18 10:44:33 +06:00 committed by GitHub
commit e5463d708f
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2 changed files with 32 additions and 2 deletions
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6
specs/merge/beacon-chain.md
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@ -291,12 +291,14 @@ def is_valid_gas_limit(payload: ExecutionPayload, parent: ExecutionPayloadHeader
```python ```python
def process_execution_payload(state: BeaconState, payload: ExecutionPayload, execution_engine: ExecutionEngine) -> None: def process_execution_payload(state: BeaconState, payload: ExecutionPayload, execution_engine: ExecutionEngine) -> None:
# Verify consistency of the parent hash, block number, random, base fee per gas and gas limit # Verify consistency of the parent hash, block number, base fee per gas and gas limit
# with respect to the previous execution payload header
if is_merge_complete(state): if is_merge_complete(state):
assert payload.parent_hash == state.latest_execution_payload_header.block_hash assert payload.parent_hash == state.latest_execution_payload_header.block_hash
assert payload.block_number == state.latest_execution_payload_header.block_number + uint64(1) assert payload.block_number == state.latest_execution_payload_header.block_number + uint64(1)
assert payload.random == get_randao_mix(state, get_current_epoch(state))
assert is_valid_gas_limit(payload, state.latest_execution_payload_header) assert is_valid_gas_limit(payload, state.latest_execution_payload_header)
# Verify random
assert payload.random == get_randao_mix(state, get_current_epoch(state))
# Verify timestamp # Verify timestamp
assert payload.timestamp == compute_timestamp_at_slot(state, state.slot) assert payload.timestamp == compute_timestamp_at_slot(state, state.slot)
# Verify the execution payload is valid # Verify the execution payload is valid

28
tests/core/pyspec/eth2spec/test/merge/block_processing/test_process_execution_payload.py
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@ -144,6 +144,34 @@ def test_bad_parent_hash_regular_payload(spec, state):
yield from run_execution_payload_processing(spec, state, execution_payload, valid=False) yield from run_execution_payload_processing(spec, state, execution_payload, valid=False)
@with_merge_and_later
@spec_state_test
def test_bad_random_first_payload(spec, state):
# pre-state
state = build_state_with_incomplete_transition(spec, state)
next_slot(spec, state)
# execution payload
execution_payload = build_empty_execution_payload(spec, state)
execution_payload.random = b'\x42' * 32
yield from run_execution_payload_processing(spec, state, execution_payload, valid=False)
@with_merge_and_later
@spec_state_test
def test_bad_random_regular_payload(spec, state):
# pre-state
state = build_state_with_complete_transition(spec, state)
next_slot(spec, state)
# execution payload
execution_payload = build_empty_execution_payload(spec, state)
execution_payload.random = b'\x04' * 32
yield from run_execution_payload_processing(spec, state, execution_payload, valid=False)
@with_merge_and_later @with_merge_and_later
@spec_state_test @spec_state_test
def test_bad_number_regular_payload(spec, state): def test_bad_number_regular_payload(spec, state):