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https://github.com/status-im/eth2.0-specs.git
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52 lines
1.3 KiB
Python
52 lines
1.3 KiB
Python
from py_ecc import bls
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import eth2spec.phase1.spec as spec
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from eth2spec.phase1.spec import (
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# constants
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CUSTODY_PERIOD_TO_RANDAO_PADDING,
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# SSZ
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EarlyDerivedSecretReveal,
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# functions
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get_active_validator_indices,
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get_current_epoch,
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get_domain,
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hash_tree_root,
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)
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from tests.phase0.helpers import *
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def get_valid_early_derived_secret_reveal(state, epoch=None):
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current_epoch = get_current_epoch(state)
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revealed_index = get_active_validator_indices(state, current_epoch)[-1]
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masker_index = get_active_validator_indices(state, current_epoch)[0]
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if epoch is None:
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epoch = current_epoch + CUSTODY_PERIOD_TO_RANDAO_PADDING
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reveal = bls.sign(
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message_hash=hash_tree_root(epoch),
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privkey=privkeys[revealed_index],
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domain=get_domain(
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state=state,
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domain_type=spec.DOMAIN_RANDAO,
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message_epoch=epoch,
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),
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)
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mask = bls.sign(
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message_hash=hash_tree_root(epoch),
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privkey=privkeys[masker_index],
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domain=get_domain(
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state=state,
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domain_type=spec.DOMAIN_RANDAO,
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message_epoch=epoch,
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),
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)
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return EarlyDerivedSecretReveal(
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revealed_index=revealed_index,
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epoch=epoch,
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reveal=reveal,
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masker_index=masker_index,
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mask=mask,
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)
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