1 files changed, 0 insertions, 75 deletions
diff --git a/swarm/storage/feed/sign.go b/swarm/storage/feed/sign.go
deleted file mode 100644
index 5f0ea0b33..000000000
--- a/swarm/storage/feed/sign.go
+++ /dev/null
@@ -1,75 +0,0 @@
-// Copyright 2018 The go-ethereum Authors
-// This file is part of the go-ethereum library.
-//
-// The go-ethereum library is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Lesser General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// The go-ethereum library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public License
-// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
-
-package feed
-
-import (
-	"crypto/ecdsa"
-
-	"github.com/ethereum/go-ethereum/common"
-	"github.com/ethereum/go-ethereum/crypto"
-)
-
-const signatureLength = 65
-
-// Signature is an alias for a static byte array with the size of a signature
-type Signature [signatureLength]byte
-
-// Signer signs feed update payloads
-type Signer interface {
-	Sign(common.Hash) (Signature, error)
-	Address() common.Address
-}
-
-// GenericSigner implements the Signer interface
-// It is the vanilla signer that probably should be used in most cases
-type GenericSigner struct {
-	PrivKey *ecdsa.PrivateKey
-	address common.Address
-}
-
-// NewGenericSigner builds a signer that will sign everything with the provided private key
-func NewGenericSigner(privKey *ecdsa.PrivateKey) *GenericSigner {
-	return &GenericSigner{
-		PrivKey: privKey,
-		address: crypto.PubkeyToAddress(privKey.PublicKey),
-	}
-}
-
-// Sign signs the supplied data
-// It wraps the ethereum crypto.Sign() method
-func (s *GenericSigner) Sign(data common.Hash) (signature Signature, err error) {
-	signaturebytes, err := crypto.Sign(data.Bytes(), s.PrivKey)
-	if err != nil {
-		return
-	}
-	copy(signature[:], signaturebytes)
-	return
-}
-
-// Address returns the public key of the signer's private key
-func (s *GenericSigner) Address() common.Address {
-	return s.address
-}
-
-// getUserAddr extracts the address of the feed update signer
-func getUserAddr(digest common.Hash, signature Signature) (common.Address, error) {
-	pub, err := crypto.SigToPub(digest.Bytes(), signature[:])
-	if err != nil {
-		return common.Address{}, err
-	}
-	return crypto.PubkeyToAddress(*pub), nil
-}