status-im
/
eth2.0-specs
mirror of https://github.com/status-im/eth2.0-specs.git
2
0
Fork 0
Code Issues Projects Releases Wiki Activity

Merge pull request #532 from benjaminion/fix-to-verify-aggregation-bitfield 

Fix to verify bitfields and aggregate signature.
This commit is contained in:
Danny Ryan 2019-01-30 15:46:29 -08:00 committed by GitHub
parent ad08dab181 3c4615df01
commit bdff6943bf
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 9 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
specs/core/0_beacon-chain.md
View File

@ -1690,8 +1690,15 @@ For each `attestation` in `block.body.attestations`:
```python ```python
assert attestation.custody_bitfield == b'\x00' * len(attestation.custody_bitfield) # [TO BE REMOVED IN PHASE 1] assert attestation.custody_bitfield == b'\x00' * len(attestation.custody_bitfield) # [TO BE REMOVED IN PHASE 1]
assert attestation.aggregation_bitfield != b'\x00' * len(attestation.aggregation_bitfield) assert attestation.aggregation_bitfield != b'\x00' * len(attestation.aggregation_bitfield)
for i in range(len(crosslink_committee)): crosslink_committee = [
committee for committee, shard in get_crosslink_committees_at_slot(state, attestation.data.slot)
if shard == attestation.data.shard
][0]
verify_bitfield(attestation.aggregation_bitfield, len(crosslink_committee))
verify_bitfield(attestation.custody_bitfield, len(crosslink_committee))
for i in range(len(crosslink_committee):
if get_bitfield_bit(attestation.aggregation_bitfield, i) == 0b0: if get_bitfield_bit(attestation.aggregation_bitfield, i) == 0b0:
assert get_bitfield_bit(attestation.custody_bitfield, i) == 0b0 assert get_bitfield_bit(attestation.custody_bitfield, i) == 0b0