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Modify hash_to_bls_field logic #2981

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merged 1 commit into from
Aug 25, 2022
Merged

Modify hash_to_bls_field logic #2981

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1 change: 1 addition & 0 deletions setup.py
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Original file line number Diff line number Diff line change
Expand Up @@ -586,6 +586,7 @@ def imports(cls, preset_name: str):
return super().imports(preset_name) + f'''
from eth2spec.utils import kzg
from eth2spec.bellatrix import {preset_name} as bellatrix
from eth2spec.utils.ssz.ssz_impl import serialize as ssz_serialize
'''

@classmethod
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5 changes: 3 additions & 2 deletions specs/eip4844/validator.md
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Expand Up @@ -93,9 +93,10 @@ def is_data_available(slot: Slot, beacon_block_root: Root, blob_kzg_commitments:
```python
def hash_to_bls_field(x: Container) -> BLSFieldElement:
"""
This function is used to generate Fiat-Shamir challenges. The output is not uniform over the BLS field.
Compute 32-byte hash of serialized container and convert it to BLS field.
The output is not uniform over the BLS field.
"""
return int.from_bytes(hash_tree_root(x), "little") % BLS_MODULUS
return int.from_bytes(hash(ssz_serialize(x)), "little") % BLS_MODULUS
```

### `compute_powers`
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