73 lines
1.7 KiB
Go
73 lines
1.7 KiB
Go
// Copyright (C) 2019 Storj Labs, Inc.
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// See LICENSE for copying information.
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package signing
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import (
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"github.com/zeebo/errs"
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"storj.io/storj/pkg/pb"
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"storj.io/storj/pkg/storj"
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)
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// Error is the default error class for signing package.
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var Error = errs.Class("signing")
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// Signer is able to sign data and verify own signature belongs.
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type Signer interface {
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ID() storj.NodeID
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HashAndSign(data []byte) ([]byte, error)
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HashAndVerifySignature(data, signature []byte) error
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}
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// SignOrderLimit signs the order limit using the specified signer.
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// Signer is a satellite.
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func SignOrderLimit(satellite Signer, unsigned *pb.OrderLimit2) (*pb.OrderLimit2, error) {
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bytes, err := EncodeOrderLimit(unsigned)
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if err != nil {
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return nil, Error.Wrap(err)
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}
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signed := *unsigned
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signed.SatelliteSignature, err = satellite.HashAndSign(bytes)
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if err != nil {
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return nil, Error.Wrap(err)
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}
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return &signed, nil
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}
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// SignOrder signs the order using the specified signer.
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// Signer is an uplink.
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func SignOrder(uplink Signer, unsigned *pb.Order2) (*pb.Order2, error) {
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bytes, err := EncodeOrder(unsigned)
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if err != nil {
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return nil, Error.Wrap(err)
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}
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signed := *unsigned
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signed.UplinkSignature, err = uplink.HashAndSign(bytes)
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if err != nil {
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return nil, Error.Wrap(err)
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}
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return &signed, nil
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}
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// SignPieceHash signs the piece hash using the specified signer.
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// Signer is either uplink or storage node.
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func SignPieceHash(signer Signer, unsigned *pb.PieceHash) (*pb.PieceHash, error) {
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bytes, err := EncodePieceHash(unsigned)
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if err != nil {
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return nil, Error.Wrap(err)
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}
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signed := *unsigned
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signed.Signature, err = signer.HashAndSign(bytes)
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if err != nil {
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return nil, Error.Wrap(err)
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}
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return &signed, nil
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}
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