48 lines
1.4 KiB
Python
48 lines
1.4 KiB
Python
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from copy import deepcopy
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# Access constants from spec pkg reference.
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import eth2spec.phase0.spec as spec
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from eth2spec.phase0.spec import get_current_epoch, get_active_validator_indices, BeaconBlockHeader, ZERO_HASH, \
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get_domain, ProposerSlashing
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from eth2spec.test.helpers.keys import pubkey_to_privkey
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from eth2spec.utils.bls import bls_sign
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from eth2spec.utils.minimal_ssz import signing_root
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def get_valid_proposer_slashing(state):
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current_epoch = get_current_epoch(state)
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validator_index = get_active_validator_indices(state, current_epoch)[-1]
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privkey = pubkey_to_privkey[state.validator_registry[validator_index].pubkey]
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slot = state.slot
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header_1 = BeaconBlockHeader(
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slot=slot,
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previous_block_root=ZERO_HASH,
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state_root=ZERO_HASH,
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block_body_root=ZERO_HASH,
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)
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header_2 = deepcopy(header_1)
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header_2.previous_block_root = b'\x02' * 32
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header_2.slot = slot + 1
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domain = get_domain(
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state=state,
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domain_type=spec.DOMAIN_BEACON_PROPOSER,
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)
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header_1.signature = bls_sign(
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message_hash=signing_root(header_1),
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privkey=privkey,
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domain=domain,
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)
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header_2.signature = bls_sign(
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message_hash=signing_root(header_2),
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privkey=privkey,
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domain=domain,
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)
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return ProposerSlashing(
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proposer_index=validator_index,
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header_1=header_1,
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header_2=header_2,
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)
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