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eip4844: update tx_peek_blob_versioned_hashes to match tx type from fee market update #3027

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Nov 7, 2022
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4 changes: 2 additions & 2 deletions specs/eip4844/beacon-chain.md
Original file line number Diff line number Diff line change
Expand Up @@ -167,10 +167,10 @@ See [the full details of `blob_versioned_hashes` offset calculation](https://gis
def tx_peek_blob_versioned_hashes(opaque_tx: Transaction) -> Sequence[VersionedHash]:
assert opaque_tx[0] == BLOB_TX_TYPE
message_offset = 1 + uint32.decode_bytes(opaque_tx[1:5])
# field offset: 32 + 8 + 32 + 32 + 8 + 4 + 32 + 4 + 4 = 156
# field offset: 32 + 8 + 32 + 32 + 8 + 4 + 32 + 4 + 4 + 32 = 188
blob_versioned_hashes_offset = (
message_offset
+ uint32.decode_bytes(opaque_tx[(message_offset + 156):(message_offset + 160)])
+ uint32.decode_bytes(opaque_tx[(message_offset + 188):(message_offset + 192)])
)
return [
VersionedHash(opaque_tx[x:(x + 32)])
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23 changes: 23 additions & 0 deletions tests/core/pyspec/eth2spec/test/eip4844/unittests/test_offset.py
Original file line number Diff line number Diff line change
@@ -0,0 +1,23 @@

from eth2spec.test.helpers.constants import (
EIP4844,
MINIMAL,
)
from eth2spec.test.helpers.sharding import (
get_sample_opaque_tx,
)
from eth2spec.test.context import (
with_phases,
spec_state_test,
with_presets,
)


@with_phases([EIP4844])
@spec_state_test
@with_presets([MINIMAL])
def test_tx_peek_blob_versioned_hashes(spec, state):
otx, blobs, commitments = get_sample_opaque_tx(spec)
data_hashes = spec.tx_peek_blob_versioned_hashes(otx)
expected = [spec.kzg_commitment_to_versioned_hash(blob_commitment) for blob_commitment in commitments]
assert expected == data_hashes
5 changes: 3 additions & 2 deletions tests/core/pyspec/eth2spec/test/helpers/sharding.py
Original file line number Diff line number Diff line change
Expand Up @@ -34,13 +34,14 @@ class ECDSASignature(Container):
class BlobTransaction(Container):
chain_id: uint256
nonce: uint64
priority_fee_per_gas: uint256
max_basefee_per_gas: uint256
max_priority_fee_per_gas: uint256
max_fee_per_gas: uint256
gas: uint64
to: Union[None, Bytes20] # Address = Bytes20
value: uint256
data: ByteList[MAX_CALLDATA_SIZE]
access_list: List[AccessTuple, MAX_ACCESS_LIST_SIZE]
max_fee_per_data_gas: uint256
blob_versioned_hashes: List[Bytes32, MAX_VERSIONED_HASHES_LIST_SIZE]


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