Ejemplo n.º 1
0
func CreateTestDirectoryBlockHeader(prevBlock *directoryBlock.DirectoryBlock) *directoryBlock.DBlockHeader {
	header := new(directoryBlock.DBlockHeader)

	header.SetBodyMR(primitives.Sha(primitives.NewZeroHash().Bytes()))
	header.SetBlockCount(0)
	header.SetNetworkID(0xffff)

	if prevBlock == nil {
		header.SetDBHeight(0)
		header.SetPrevLedgerKeyMR(primitives.NewZeroHash())
		header.SetPrevKeyMR(primitives.NewZeroHash())
		header.SetTimestamp(1234)
	} else {
		header.SetDBHeight(prevBlock.Header.GetDBHeight() + 1)
		header.SetPrevLedgerKeyMR(prevBlock.GetHash())
		keyMR, err := prevBlock.BuildKeyMerkleRoot()
		if err != nil {
			panic(err)
		}
		header.SetPrevKeyMR(keyMR)
		header.SetTimestamp(prevBlock.Header.GetTimestamp() + 1)
	}

	header.SetVersion(1)

	return header
}
Ejemplo n.º 2
0
func (c *DirectoryBlock) New() interfaces.BinaryMarshallableAndCopyable {
	dBlock := new(DirectoryBlock)
	dBlock.Header = NewDBlockHeader()
	dBlock.DBHash = primitives.NewZeroHash()
	dBlock.KeyMR = primitives.NewZeroHash()
	return dBlock
}
Ejemplo n.º 3
0
func CreateTestDirectoryBlockHeader(prevBlock *directoryBlock.DirectoryBlock) *directoryBlock.DBlockHeader {
	header := new(directoryBlock.DBlockHeader)

	header.SetBodyMR(primitives.Sha(primitives.NewZeroHash().Bytes()))
	header.SetBlockCount(0)
	header.SetNetworkID(constants.MAIN_NETWORK_ID)

	if prevBlock == nil {
		header.SetDBHeight(0)
		header.SetPrevFullHash(primitives.NewZeroHash())
		header.SetPrevKeyMR(primitives.NewZeroHash())
		header.SetTimestamp(primitives.NewTimestampFromMinutes(1234))
	} else {
		header.SetDBHeight(prevBlock.Header.GetDBHeight() + 1)
		header.SetPrevFullHash(prevBlock.GetHash())
		keyMR, err := prevBlock.BuildKeyMerkleRoot()
		if err != nil {
			panic(err)
		}
		header.SetPrevKeyMR(keyMR)
		header.SetTimestamp(primitives.NewTimestampFromMinutes(prevBlock.Header.GetTimestamp().GetTimeMinutesUInt32() + 1))
	}

	header.SetVersion(1)

	return header
}
Ejemplo n.º 4
0
func TestAuthoritySignature(t *testing.T) {
	s := testHelper.CreateAndPopulateTestState()
	idindex := s.CreateBlankFactomIdentity(primitives.NewZeroHash())
	s.Identities[idindex].ManagementChainID = primitives.NewZeroHash()

	index := s.AddAuthorityFromChainID(primitives.NewZeroHash())
	s.Authorities[index].SigningKey = *(s.GetServerPublicKey())
	s.Authorities[index].Status = 1

	ack := new(messages.Ack)
	ack.DBHeight = s.LLeaderHeight
	ack.VMIndex = 1
	ack.Minute = byte(5)
	ack.Timestamp = s.GetTimestamp()
	ack.MessageHash = primitives.NewZeroHash()
	ack.LeaderChainID = s.IdentityChainID
	ack.SerialHash = primitives.NewZeroHash()

	err := ack.Sign(s)
	if err != nil {
		t.Error("Authority Test Failed when signing message")
	}

	msg, err := ack.MarshalForSignature()
	if err != nil {
		t.Error("Authority Test Failed when marshalling for sig")
	}

	sig := ack.GetSignature()
	server, err := s.Authorities[0].VerifySignature(msg, sig.GetSignature())
	if !server || err != nil {
		t.Error("Authority Test Failed when checking sigs")
	}
}
Ejemplo n.º 5
0
//
//                               UnmarshalBinaryData for FullServerFault
//
func (m *FullServerFault) UnmarshalBinaryData(data []byte) (newData []byte, err error) {
	defer func() {
		if r := recover(); r != nil {
			err = fmt.Errorf("Error unmarshalling With Signatures Invalid Server Fault: %v", r)
		}
	}()

	newData = data
	if newData[0] != m.Type() {
		return nil, fmt.Errorf("Invalid Message type")
	}
	newData = newData[1:]

	if m.ServerID == nil {
		m.ServerID = primitives.NewZeroHash()
	}

	newData, err = Unmarshall(m.ServerID, err, newData)

	if m.AuditServerID == nil {
		m.AuditServerID = primitives.NewZeroHash()
	}
	newData, err = m.AuditServerID.UnmarshalBinaryData(newData)
	if err != nil {
		return nil, err
	}

	m.VMIndex, newData = newData[0], newData[1:]
	m.DBHeight, newData = binary.BigEndian.Uint32(newData[0:4]), newData[4:]
	m.Height, newData = binary.BigEndian.Uint32(newData[0:4]), newData[4:]
	m.SystemHeight, newData = binary.BigEndian.Uint32(newData[0:4]), newData[4:]

	m.Timestamp = new(primitives.Timestamp)
	newData, err = m.Timestamp.UnmarshalBinaryData(newData)
	if err != nil {
		return nil, err
	}

	m.SSerialHash = primitives.NewZeroHash()
	newData, err = m.SSerialHash.UnmarshalBinaryData(newData)
	if err != nil {
		return nil, err
	}

	newData, err = m.SignatureList.UnmarshalBinaryData(newData)
	if err != nil {
		return nil, err
	}

	if len(newData) > 0 {
		m.Signature = new(primitives.Signature)
		newData, err = m.Signature.UnmarshalBinaryData(newData)
		if err != nil {
			return nil, err
		}
	}

	return newData, nil
}
Ejemplo n.º 6
0
func NewECBlockHeader() *ECBlockHeader {
	h := new(ECBlockHeader)
	h.BodyHash = primitives.NewZeroHash()
	h.PrevHeaderHash = primitives.NewZeroHash()
	h.PrevFullHash = primitives.NewZeroHash()
	h.HeaderExpansionArea = make([]byte, 0)
	return h
}
Ejemplo n.º 7
0
func NewDBlockHeader() *DBlockHeader {
	d := new(DBlockHeader)
	d.BodyMR = primitives.NewZeroHash()
	d.PrevKeyMR = primitives.NewZeroHash()
	d.PrevLedgerKeyMR = primitives.NewZeroHash()

	return d
}
Ejemplo n.º 8
0
// NewEBlockHeader initializes a new empty Entry Block Header.
func NewEBlockHeader() *EBlockHeader {
	e := new(EBlockHeader)
	e.ChainID = primitives.NewZeroHash()
	e.BodyMR = primitives.NewZeroHash()
	e.PrevKeyMR = primitives.NewZeroHash()
	e.PrevLedgerKeyMR = primitives.NewZeroHash()
	return e
}
Ejemplo n.º 9
0
func NewDirBlockInfo() *DirBlockInfo {
	dbi := new(DirBlockInfo)
	dbi.DBHash = primitives.NewZeroHash()
	dbi.BTCTxHash = primitives.NewZeroHash()
	dbi.BTCBlockHash = primitives.NewZeroHash()
	dbi.DBMerkleRoot = primitives.NewZeroHash()
	return dbi
}
Ejemplo n.º 10
0
func newDirBlockInfoCopy() *dirBlockInfoCopy {
	dbi := new(dirBlockInfoCopy)
	dbi.DBHash = primitives.NewZeroHash()
	dbi.BTCTxHash = primitives.NewZeroHash()
	dbi.BTCBlockHash = primitives.NewZeroHash()
	dbi.DBMerkleRoot = primitives.NewZeroHash()
	return dbi
}
Ejemplo n.º 11
0
func NewECBlockHeader() *ECBlockHeader {
	h := new(ECBlockHeader)
	h.ECChainID = primitives.NewZeroHash()
	h.ECChainID.SetBytes(constants.EC_CHAINID)
	h.BodyHash = primitives.NewZeroHash()
	h.PrevHeaderHash = primitives.NewZeroHash()
	h.PrevLedgerKeyMR = primitives.NewZeroHash()
	h.HeaderExpansionArea = make([]byte, 0)
	return h
}
Ejemplo n.º 12
0
func NewAdminBlock(prev interfaces.IAdminBlock) interfaces.IAdminBlock {
	block := new(AdminBlock)
	block.Header = new(ABlockHeader)
	if prev != nil {
		block.Header.SetPrevBackRefHash(primitives.NewZeroHash())
		block.Header.SetDBHeight(prev.GetDBHeight() + 1)
	} else {
		block.Header.SetPrevBackRefHash(primitives.NewZeroHash())
	}
	return block
}
Ejemplo n.º 13
0
func UnmarshalDBlock(data []byte) (interfaces.IDirectoryBlock, error) {
	dBlock := new(DirectoryBlock)
	dBlock.Header = NewDBlockHeader()
	dBlock.DBHash = primitives.NewZeroHash()
	dBlock.KeyMR = primitives.NewZeroHash()
	err := dBlock.UnmarshalBinary(data)
	if err != nil {
		return nil, err
	}
	return dBlock, nil
}
Ejemplo n.º 14
0
// NewDirBlockInfoFromDirBlock creates a DirDirBlockInfo from DirectoryBlock
func NewDirBlockInfoFromDirBlock(dirBlock interfaces.IDirectoryBlock) *DirBlockInfo {
	dbic := new(DirBlockInfo)
	dbic.DBHash = dirBlock.GetHash()
	dbic.DBHeight = dirBlock.GetDatabaseHeight()
	dbic.DBMerkleRoot = dirBlock.GetKeyMR()
	dbic.Timestamp = int64(dirBlock.GetHeader().GetTimestamp()) // * 60 ???
	dbic.BTCTxHash = primitives.NewZeroHash()
	dbic.BTCBlockHash = primitives.NewZeroHash()
	dbic.BTCConfirmed = false
	return dbic
}
Ejemplo n.º 15
0
func NewCommitChain() *CommitChain {
	c := new(CommitChain)
	c.Version = 0
	c.MilliTime = new(primitives.ByteSlice6)
	c.ChainIDHash = primitives.NewZeroHash()
	c.Weld = primitives.NewZeroHash()
	c.EntryHash = primitives.NewZeroHash()
	c.Credits = 0
	c.ECPubKey = new(primitives.ByteSlice32)
	c.Sig = new(primitives.ByteSlice64)
	return c
}
Ejemplo n.º 16
0
func createTestDirectoryBlockHeader() *DBlockHeader {
	header := new(DBlockHeader)

	header.SetDBHeight(1)
	header.SetBodyMR(primitives.Sha(primitives.NewZeroHash().Bytes()))
	header.SetBlockCount(0)
	header.SetNetworkID(constants.MAIN_NETWORK_ID)
	header.SetPrevFullHash(primitives.NewZeroHash())
	header.SetPrevKeyMR(primitives.NewZeroHash())
	header.SetTimestamp(primitives.NewTimestampFromSeconds(1234))
	header.SetVersion(1)

	return header
}
Ejemplo n.º 17
0
func setupFirstAuthority(s *state.State) {
	var id state.Identity
	if networkIdentity := s.GetNetworkBootStrapIdentity(); networkIdentity != nil {
		id.IdentityChainID = networkIdentity
	} else {
		id.IdentityChainID = primitives.NewZeroHash()
	}
	id.ManagementChainID, _ = primitives.HexToHash("88888800000000000000000000000000")
	if pub := s.GetNetworkBootStrapKey(); pub != nil {
		id.SigningKey = pub
	} else {
		id.SigningKey = primitives.NewZeroHash()
	}
	id.MatryoshkaHash = primitives.NewZeroHash()
	id.ManagementCreated = 0
	id.ManagementRegistered = 0
	id.IdentityCreated = 0
	id.IdentityRegistered = 0
	id.Key1 = primitives.NewZeroHash()
	id.Key2 = primitives.NewZeroHash()
	id.Key3 = primitives.NewZeroHash()
	id.Key4 = primitives.NewZeroHash()
	id.Status = 1
	s.Identities = append(s.Identities, &id)

	var auth state.Authority
	auth.Status = 1
	auth.SigningKey = primitives.PubKeyFromString(id.SigningKey.String())
	auth.MatryoshkaHash = primitives.NewZeroHash()
	auth.AuthorityChainID = id.IdentityChainID
	auth.ManagementChainID, _ = primitives.HexToHash("88888800000000000000000000000000")
	s.Authorities = append(s.Authorities, &auth)
}
Ejemplo n.º 18
0
func createTestDirectoryBlockHeader() *DBlockHeader {
	header := new(DBlockHeader)

	header.SetDBHeight(1)
	header.SetBodyMR(primitives.Sha(primitives.NewZeroHash().Bytes()))
	header.SetBlockCount(0)
	header.SetNetworkID(0xffff)
	header.SetPrevLedgerKeyMR(primitives.NewZeroHash())
	header.SetPrevKeyMR(primitives.NewZeroHash())
	header.SetTimestamp(1234)
	header.SetVersion(1)

	return header
}
Ejemplo n.º 19
0
func TestServerFaultUpdateState(t *testing.T) {
	sigs := 10
	sf := new(ServerFault)

	sf.Timestamp = primitives.NewTimestampNow()
	sf.ServerID = testHelper.NewRepeatingHash(1)
	sf.AuditServerID = testHelper.NewRepeatingHash(2)

	sf.VMIndex = 0x33
	sf.DBHeight = 0x44556677
	sf.Height = 0x88990011

	core, err := sf.MarshalCore()
	if err != nil {
		t.Errorf("%v", err)
	}
	for i := 0; i < sigs; i++ {
		priv := testHelper.NewPrimitivesPrivateKey(uint64(i))
		sig := priv.Sign(core)
		sf.SignatureList.List = append(sf.SignatureList.List, sig)
	}
	sf.SignatureList.Length = uint32(len(sf.SignatureList.List))

	s := testHelper.CreateAndPopulateTestState()
	idindex := s.CreateBlankFactomIdentity(primitives.NewZeroHash())
	s.Identities[idindex].ManagementChainID = primitives.NewZeroHash()
	for i := 0; i < sigs; i++ {
		//Federated Server
		index := s.AddAuthorityFromChainID(testHelper.NewRepeatingHash(byte(i)))
		s.Authorities[index].SigningKey = *testHelper.NewPrimitivesPrivateKey(uint64(i)).Pub
		s.Authorities[index].Status = 1

		s.AddFedServer(s.GetLeaderHeight(), testHelper.NewRepeatingHash(byte(i)))

		//Audit Server
		index = s.AddAuthorityFromChainID(testHelper.NewRepeatingHash(byte(i + sigs)))
		s.Authorities[index].SigningKey = *testHelper.NewPrimitivesPrivateKey(uint64(i + sigs)).Pub
		s.Authorities[index].Status = 0

		s.AddFedServer(s.GetLeaderHeight(), testHelper.NewRepeatingHash(byte(i+sigs)))
	}

	err = sf.UpdateState(s)
	if err != nil {
		t.Errorf("%v", err)
	}

}
Ejemplo n.º 20
0
func (id *Identity) IsFull() bool {
	zero := primitives.NewZeroHash()
	if id.IdentityChainID.IsSameAs(zero) {
		return false
	}
	if id.ManagementChainID.IsSameAs(zero) {
		return false
	}
	if id.MatryoshkaHash.IsSameAs(zero) {
		return false
	}
	if id.Key1.IsSameAs(zero) {
		return false
	}
	if id.Key2.IsSameAs(zero) {
		return false
	}
	if id.Key3.IsSameAs(zero) {
		return false
	}
	if id.Key4.IsSameAs(zero) {
		return false
	}
	if id.SigningKey.IsSameAs(zero) {
		return false
	}
	if len(id.AnchorKeys) == 0 {
		return false
	}
	return true
}
Ejemplo n.º 21
0
func GenerateGenesisBlocks(networkID uint32) (interfaces.IDirectoryBlock, interfaces.IAdminBlock, interfaces.IFBlock, interfaces.IEntryCreditBlock) {
	dblk := directoryBlock.NewDirectoryBlock(nil)
	ablk := adminBlock.NewAdminBlock(nil)
	fblk := factoid.GetGenesisFBlock(networkID)
	ecblk := entryCreditBlock.NewECBlock()

	if networkID != constants.MAIN_NETWORK_ID {
		if networkID == constants.TEST_NETWORK_ID {
			ablk.AddFedServer(primitives.NewZeroHash())
		} else {
			ablk.AddFedServer(primitives.Sha([]byte("FNode0")))
		}
	} else {
		ecblk.GetBody().AddEntry(entryCreditBlock.NewServerIndexNumber())
		for i := 1; i < 11; i++ {
			minute := entryCreditBlock.NewMinuteNumber(uint8(i))
			ecblk.GetBody().AddEntry(minute)
		}
	}

	dblk.SetABlockHash(ablk)
	dblk.SetECBlockHash(ecblk)
	dblk.SetFBlockHash(fblk)
	dblk.GetHeader().SetNetworkID(networkID)

	dblk.GetHeader().SetTimestamp(primitives.NewTimestampFromMinutes(24018960))

	return dblk, ablk, fblk, ecblk
}
Ejemplo n.º 22
0
func NewEntry() *Entry {
	e := new(Entry)
	e.ChainID = primitives.NewZeroHash()
	e.ExtIDs = make([][]byte, 0)
	e.Content = make([]byte, 0)
	return e
}
Ejemplo n.º 23
0
func (a *Anchor) checkMissingDirBlockInfo() {
	anchorLog.Debug("checkMissingDirBlockInfo for those unsaved DirBlocks in database")
	dblocks, _ := a.db.FetchAllDBlocks()
	dirBlockInfos, _ := a.db.FetchAllDirBlockInfos() //FetchAllDirBlockInfos()
	for _, dblock := range dblocks {
		var found = false
		for i, dbinfo := range dirBlockInfos {
			if dbinfo.GetDatabaseHeight() == dblock.GetDatabaseHeight() {
				dirBlockInfos = append(dirBlockInfos[:i], dirBlockInfos[i+1:]...)
				found = true
				break
			}
		}
		if !found {
			if dblock.GetKeyMR() == nil || bytes.Compare(dblock.GetKeyMR().Bytes(), primitives.NewZeroHash().Bytes()) == 0 {
				dblock.BuildKeyMerkleRoot()
			}
			dirBlockInfo := dbInfo.NewDirBlockInfoFromDirBlock(dblock)
			dirBlockInfo.SetTimestamp(primitives.NewTimestampNow())
			anchorLog.Debug("add missing dirBlockInfo to map: ", spew.Sdump(dirBlockInfo))
			a.db.SaveDirBlockInfo(dirBlockInfo)
			a.dirBlockInfoSlice = append(a.dirBlockInfoSlice, dirBlockInfo)
		}
	}
}
Ejemplo n.º 24
0
func getECblock(hash string) *ECBlockHolder {
	mr, err := primitives.HexToHash(hash)
	if err != nil {
		return nil
	}

	dbase := StatePointer.GetAndLockDB()
	ecblk, err := dbase.FetchECBlock(mr)
	StatePointer.UnlockDB()

	if ecblk == nil || err != nil {
		return nil
	}
	if ecblk.GetHeader() == nil {
		return nil
	}

	holder := new(ECBlockHolder)
	holder.ECBlock = ecblk
	length := 0
	zero := primitives.NewZeroHash()
	for _, e := range ecblk.GetEntryHashes() {
		if e != nil && !e.IsSameAs(zero) {
			length++
		}
	}
	holder.Length = length

	return holder
}
Ejemplo n.º 25
0
func (db *Overlay) SaveIncludedInMulti(entries []interfaces.IHash, block interfaces.IHash, checkForDuplicateEntries bool) error {
	if entries == nil || block == nil {
		return nil
	}
	batch := []interfaces.Record{}

	for _, entry := range entries {
		if checkForDuplicateEntries == true {
			loaded, err := db.Get(INCLUDED_IN, entry.Bytes(), primitives.NewZeroHash())
			if err != nil {
				return err
			}
			if loaded != nil {
				continue
			}
		}
		batch = append(batch, interfaces.Record{INCLUDED_IN, entry.Bytes(), block})
	}

	err := db.DB.PutInBatch(batch)
	if err != nil {
		return err
	}

	return nil
}
Ejemplo n.º 26
0
func (b *IncreaseBalance) UnmarshalBinaryData(data []byte) (newData []byte, err error) {
	buf := bytes.NewBuffer(data)
	hash := make([]byte, 32)

	_, err = buf.Read(hash)
	if err != nil {
		return
	}
	b.ECPubKey = new(primitives.ByteSlice32)
	copy(b.ECPubKey[:], hash)

	_, err = buf.Read(hash)
	if err != nil {
		return
	}
	if b.TXID == nil {
		b.TXID = primitives.NewZeroHash()
	}
	b.TXID.SetBytes(hash)

	tmp := make([]byte, 0)
	b.Index, tmp = primitives.DecodeVarInt(buf.Bytes())

	b.NumEC, tmp = primitives.DecodeVarInt(tmp)

	newData = tmp
	return
}
Ejemplo n.º 27
0
func (b *IncreaseBalance) UnmarshalBinaryData(data []byte) (newData []byte, err error) {
	defer func() {
		if r := recover(); r != nil {
			err = fmt.Errorf("Error unmarshalling IncreaseBalance: %v", r)
		}
	}()

	buf := primitives.NewBuffer(data)
	hash := make([]byte, 32)

	_, err = buf.Read(hash)
	if err != nil {
		return
	}
	b.ECPubKey = new(primitives.ByteSlice32)
	copy(b.ECPubKey[:], hash)

	_, err = buf.Read(hash)
	if err != nil {
		return
	}
	if b.TXID == nil {
		b.TXID = primitives.NewZeroHash()
	}
	b.TXID.SetBytes(hash)

	tmp := make([]byte, 0)
	b.Index, tmp = primitives.DecodeVarInt(buf.DeepCopyBytes())

	b.NumEC, tmp = primitives.DecodeVarInt(tmp)

	newData = tmp
	return
}
Ejemplo n.º 28
0
// AddEndOfMinuteMarker adds the End of Minute to the Entry Block. The End of
// Minut byte becomes the last byte in a 32 byte slice that is added to the
// Entry Block Body as an Entry Block Entry.
func (e *EBlock) AddEndOfMinuteMarker(m byte) {
	h := make([]byte, 32)
	h[len(h)-1] = m
	hash := primitives.NewZeroHash()
	hash.SetBytes(h)
	e.Body.EBEntries = append(e.Body.EBEntries, hash)
}
Ejemplo n.º 29
0
func (a *Anchor) checkTxMalleation(transaction *btcutil.Tx, details *btcjson.BlockDetails) {
	anchorLog.Debug("in checkTxMalleation")
	dirBlockInfos := make([]interfaces.IDirBlockInfo, 0, len(a.dirBlockInfoSlice))
	for _, v := range a.dirBlockInfoSlice {
		// find those already anchored but no call back yet
		if v.GetBTCBlockHeight() == 0 && bytes.Compare(v.GetBTCTxHash().Bytes(), primitives.NewZeroHash().Bytes()) != 0 {
			dirBlockInfos = append(dirBlockInfos, v)
		}
	}
	sort.Sort(util.ByDirBlockInfoTimestamp(dirBlockInfos))
	anchorLog.Debugf("malleated tx candidate count=%d, dirBlockInfo list=%s\n", len(dirBlockInfos), spew.Sdump(dirBlockInfos))
	for _, dirBlockInfo := range dirBlockInfos {
		tx, err := a.wclient.GetRawTransaction(toShaHash(dirBlockInfo.GetBTCTxHash()))
		if err != nil {
			anchorLog.Debugf(err.Error())
			continue
		}
		anchorLog.Debugf("GetRawTransaction=%s, dirBlockInfo=%s\n", spew.Sdump(tx), spew.Sdump(dirBlockInfo))
		// compare OP_RETURN
		if reflect.DeepEqual(transaction.MsgTx().TxOut[0], tx.MsgTx().TxOut[0]) {
			anchorLog.Debugf("Tx Malleated: original.txid=%s, malleated.txid=%s\n", dirBlockInfo.GetBTCTxHash().(*primitives.Hash).BTCString(), transaction.Sha().String())
			a.doSaveDirBlockInfo(transaction, details, dirBlockInfo.(*dbInfo.DirBlockInfo), true)
			break
		}
	}
}
Ejemplo n.º 30
0
func CreateTestDirectoryBlock(prevBlock *directoryBlock.DirectoryBlock) *directoryBlock.DirectoryBlock {
	dblock := new(directoryBlock.DirectoryBlock)

	dblock.SetHeader(CreateTestDirectoryBlockHeader(prevBlock))

	dblock.SetDBEntries(make([]interfaces.IDBEntry, 0, 5))

	de := new(directoryBlock.DBEntry)
	de.ChainID = primitives.NewZeroHash()
	de.KeyMR = primitives.NewZeroHash()

	dblock.SetDBEntries(append(dblock.GetDBEntries(), de))
	//dblock.GetHeader().SetBlockCount(uint32(len(dblock.GetDBEntries())))

	return dblock
}