39 lines
1.2 KiB
Go
39 lines
1.2 KiB
Go
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package lf3
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import (
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"context"
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"golang.org/x/xerrors"
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"github.com/filecoin-project/go-address"
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"github.com/filecoin-project/go-f3/gpbft"
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"github.com/filecoin-project/lotus/api"
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)
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type signer struct {
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wallet api.Wallet
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}
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// Sign signs a message with the private key corresponding to a public key.
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// The the key must be known by the wallet and be of BLS type.
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func (s *signer) Sign(sender gpbft.PubKey, msg []byte) ([]byte, error) {
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addr, err := address.NewBLSAddress(sender)
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if err != nil {
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return nil, xerrors.Errorf("converting pubkey to address: %w", err)
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}
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sig, err := s.wallet.WalletSign(context.TODO(), addr, msg, api.MsgMeta{Type: api.MTUnknown})
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if err != nil {
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return nil, xerrors.Errorf("error while signing: %w", err)
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}
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return sig.Data, nil
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}
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// MarshalPayloadForSigning marshals the given payload into the bytes that should be signed.
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// This should usually call `Payload.MarshalForSigning(NetworkName)` except when testing as
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// that method is slow (computes a merkle tree that's necessary for testing).
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// Implementations must be safe for concurrent use.
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func (s *signer) MarshalPayloadForSigning(nn gpbft.NetworkName, p *gpbft.Payload) []byte {
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return p.MarshalForSigning(nn)
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}
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