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Merge pull request #397 from ralexstokes/fix-merkle-bug

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Fixes bug with Merkle proof branch selection
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Danny Ryan 2019-01-07 09:45:42 -07:00 committed by GitHub
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specs/core/0_beacon-chain.md
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@ -1478,7 +1478,7 @@ For each `deposit` in `block.body.deposits`:
def verify_merkle_branch(leaf: Hash32, branch: [Hash32], depth: int, index: int, root: Hash32) -> bool: def verify_merkle_branch(leaf: Hash32, branch: [Hash32], depth: int, index: int, root: Hash32) -> bool:
value = leaf value = leaf
for i in range(depth): for i in range(depth):
if index % 2: if index // (2**i) % 2:
value = hash(branch[i] + value) value = hash(branch[i] + value)
else: else:
value = hash(value + branch[i]) value = hash(value + branch[i])