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Update specs/phase1/custody-game.md

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Co-authored-by: Hsiao-Wei Wang <hwwang156@gmail.com>
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dankrad
2020-06-12 11:16:19 +01:00
committed by GitHub
parent bcfaa1b635
commit 7c6280aa8e
1 changed files with 6 additions and 2 deletions
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specs/phase1/custody-game.md
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@@ -264,8 +264,12 @@ def compute_custody_bit(key: BLSSignature, data: ByteList[MAX_SHARD_BLOCK_SIZE])
secrets = get_custody_secrets(key)
custody_atoms = get_custody_atoms(data)
n = len(custody_atoms)
uhf = (sum(secrets[i % CUSTODY_SECRETS]**i * int.from_bytes(atom, "little") % CUSTODY_PRIME
for i, atom in enumerate(custody_atoms)) + secrets[n % CUSTODY_SECRETS]**n) % CUSTODY_PRIME
uhf = (
sum(
secrets[i % CUSTODY_SECRETS]**i * int.from_bytes(atom, "little") % CUSTODY_PRIME
for i, atom in enumerate(custody_atoms)
) + secrets[n % CUSTODY_SECRETS]**n
) % CUSTODY_PRIME
return legendre_bit(uhf + secrets[0], CUSTODY_PRIME)
```