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Flip is_valid_light_client_header logic for extensibility

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This commit is contained in:
Etan Kissling
2022-12-12 12:33:58 +01:00
parent 2df8a559b8
commit 11d2a59948
1 changed files with 12 additions and 11 deletions
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23
specs/capella/light-client/sync-protocol.md
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@@ -162,18 +162,19 @@ def get_lc_execution_root(header: LightClientHeader) -> Root:
```python
def is_valid_light_client_header(header: LightClientHeader) -> bool:
if compute_epoch_at_slot(get_lc_beacon_slot(header)) >= CAPELLA_FORK_EPOCH:
return is_valid_merkle_branch(
leaf=get_lc_execution_root(header),
branch=header.execution_branch,
depth=floorlog2(EXECUTION_PAYLOAD_INDEX),
index=get_subtree_index(EXECUTION_PAYLOAD_INDEX),
root=header.beacon.body_root,
)
if compute_epoch_at_slot(get_lc_beacon_slot(header)) < CAPELLA_FORK_EPOCH:
if header.execution != ExecutionPayloadHeader():
return False
return (
header.execution == ExecutionPayloadHeader()
and header.execution_branch == [Bytes32() for _ in range(floorlog2(EXECUTION_PAYLOAD_INDEX))]
if header.execution_branch != [Bytes32() for _ in range(floorlog2(EXECUTION_PAYLOAD_INDEX))]:
return False
return is_valid_merkle_branch(
leaf=get_lc_execution_root(header),
branch=header.execution_branch,
depth=floorlog2(EXECUTION_PAYLOAD_INDEX),
index=get_subtree_index(EXECUTION_PAYLOAD_INDEX),
root=header.beacon.body_root,
)
```