mirror of https://github.com/certusone/vouch.git
48 lines
1.4 KiB
Go
48 lines
1.4 KiB
Go
// Copyright © 2020 Attestant Limited.
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package standard
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import (
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"context"
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"github.com/attestantio/go-eth2-client/spec/phase0"
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"github.com/pkg/errors"
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e2wtypes "github.com/wealdtech/go-eth2-wallet-types/v2"
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)
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// SignAggregateAndProof signs an aggregate and proof item.
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func (s *Service) SignAggregateAndProof(ctx context.Context,
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account e2wtypes.Account,
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slot phase0.Slot,
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aggregateAndProofRoot phase0.Root,
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) (
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phase0.BLSSignature,
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error,
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) {
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// Fetch the domain.
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domain, err := s.domainProvider.Domain(ctx,
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s.aggregateAndProofDomainType,
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phase0.Epoch(slot/s.slotsPerEpoch))
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if err != nil {
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return phase0.BLSSignature{}, errors.Wrap(err, "failed to obtain signature domain for beacon aggregate and proof")
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}
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sig, err := s.sign(ctx, account, aggregateAndProofRoot, domain)
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if err != nil {
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return phase0.BLSSignature{}, errors.Wrap(err, "failed to aggregate and proof")
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}
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return sig, nil
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}
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