48 lines
1.3 KiB
Python
48 lines
1.3 KiB
Python
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from eth2spec.test.helpers.keys import privkeys
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from eth2spec.utils.bls import (
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bls_sign,
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only_with_bls,
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)
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from eth2spec.utils.ssz.ssz_impl import (
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signing_root,
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)
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@only_with_bls()
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def sign_shard_block(spec, state, block, shard, proposer_index=None):
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if proposer_index is None:
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proposer_index = spec.get_shard_block_proposer_index(state, shard, block.core.slot)
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privkey = privkeys[proposer_index]
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block.signatures.proposer_signature = bls_sign(
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message_hash=signing_root(block),
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privkey=privkey,
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domain=spec.get_domain(
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state,
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spec.DOMAIN_SHARD_PROPOSER,
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spec.compute_epoch_of_shard_slot(block.core.slot),
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)
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)
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def build_empty_shard_block(spec, state, slot, shard, parent_root, signed=False):
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if slot is None:
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slot = state.slot
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block = spec.ShardBlock(
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core=spec.ExtendedShardBlockCore(
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slot=slot,
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beacon_chain_root=state.block_roots[state.slot % spec.SLOTS_PER_HISTORICAL_ROOT],
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parent_root=parent_root,
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),
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signatures=spec.ShardBlockSignatures(
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attestation_signature=b'\x12' * 96,
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proposer_signature=b'\x25' * 96,
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)
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)
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if signed:
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sign_shard_block(spec, state, block, shard)
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return block
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