1 files changed, 0 insertions, 78 deletions
diff --git a/swarm/api/encrypt.go b/swarm/api/encrypt.go
deleted file mode 100644
index 0d516b3d5..000000000
--- a/swarm/api/encrypt.go
+++ /dev/null
@@ -1,78 +0,0 @@
-// Copyright 2016 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 api
-
-import (
-	"encoding/binary"
-	"errors"
-
-	"github.com/ethereum/go-ethereum/swarm/storage/encryption"
-	"golang.org/x/crypto/sha3"
-)
-
-type RefEncryption struct {
-	refSize int
-	span    []byte
-}
-
-func NewRefEncryption(refSize int) *RefEncryption {
-	span := make([]byte, 8)
-	binary.LittleEndian.PutUint64(span, uint64(refSize))
-	return &RefEncryption{
-		refSize: refSize,
-		span:    span,
-	}
-}
-
-func (re *RefEncryption) Encrypt(ref []byte, key []byte) ([]byte, error) {
-	spanEncryption := encryption.New(key, 0, uint32(re.refSize/32), sha3.NewLegacyKeccak256)
-	encryptedSpan, err := spanEncryption.Encrypt(re.span)
-	if err != nil {
-		return nil, err
-	}
-	dataEncryption := encryption.New(key, re.refSize, 0, sha3.NewLegacyKeccak256)
-	encryptedData, err := dataEncryption.Encrypt(ref)
-	if err != nil {
-		return nil, err
-	}
-	encryptedRef := make([]byte, len(ref)+8)
-	copy(encryptedRef[:8], encryptedSpan)
-	copy(encryptedRef[8:], encryptedData)
-
-	return encryptedRef, nil
-}
-
-func (re *RefEncryption) Decrypt(ref []byte, key []byte) ([]byte, error) {
-	spanEncryption := encryption.New(key, 0, uint32(re.refSize/32), sha3.NewLegacyKeccak256)
-	decryptedSpan, err := spanEncryption.Decrypt(ref[:8])
-	if err != nil {
-		return nil, err
-	}
-
-	size := binary.LittleEndian.Uint64(decryptedSpan)
-	if size != uint64(len(ref)-8) {
-		return nil, errors.New("invalid span in encrypted reference")
-	}
-
-	dataEncryption := encryption.New(key, re.refSize, 0, sha3.NewLegacyKeccak256)
-	decryptedRef, err := dataEncryption.Decrypt(ref[8:])
-	if err != nil {
-		return nil, err
-	}
-
-	return decryptedRef, nil
-}