func ComputeCryptoHash(content ...[]byte) []byte {
combinedContent := []byte{}
for _, b := range content {
combinedContent = append(combinedContent, b...)
}
return util.ComputeCryptoHash(combinedContent)
}
func (inst *instance) execute(payload []byte) {
tx := &pb.Transaction{
Payload: payload,
}
txs := []*pb.Transaction{tx}
txBatchID := base64.StdEncoding.EncodeToString(util.ComputeCryptoHash(payload))
if err := inst.BeginTxBatch(txBatchID); err != nil {
fmt.Printf("Failed to begin transaction %s: %v", txBatchID, err)
return
}
if _, err := inst.ExecTxs(txBatchID, txs); nil != err {
fmt.Printf("Fail to execute transaction %s: %v", txBatchID, err)
if err := inst.RollbackTxBatch(txBatchID); err != nil {
panic(fmt.Errorf("Unable to rollback transaction %s: %v", txBatchID, err))
}
return
}
if _, err := inst.CommitTxBatch(txBatchID, nil); err != nil {
fmt.Printf("Failed to commit transaction %s to the ledger: %v", txBatchID, err)
if err = inst.RollbackTxBatch(txBatchID); err != nil {
panic(fmt.Errorf("Unable to rollback transaction %s: %v", txBatchID, err))
}
return
}
}
func (trieNode *trieNode) computeCryptoHash() []byte {
stateTrieLogger.Debug("Enter computeCryptoHash() for trieNode [%s]", trieNode)
var cryptoHashContent []byte
if trieNode.containsValue() {
stateTrieLogger.Debug("Adding value to hash computation for trieNode [%s]", trieNode)
cryptoHashContent = append(cryptoHashContent, trieNode.trieKey.getEncodedBytes()...)
cryptoHashContent = append(cryptoHashContent, trieNode.value...)
}
sortedChildrenIndexes := trieNode.getSortedChildrenIndex()
for _, index := range sortedChildrenIndexes {
childCryptoHash := trieNode.childrenCryptoHashes[index]
stateTrieLogger.Debug("Adding hash [%#v] for child number [%d] to hash computation for trieNode [%s]", childCryptoHash, index, trieNode)
cryptoHashContent = append(cryptoHashContent, childCryptoHash...)
}
if cryptoHashContent == nil {
// node has no associated value and no associated children.
stateTrieLogger.Debug("Returning nil as hash for trieNode = [%s]. Also, marking this key for deletion.", trieNode)
trieNode.markedForDeletion = true
return nil
}
if !trieNode.containsValue() && trieNode.getNumChildren() == 1 {
// node has no associated value and has a single child. Propagate the child hash up
stateTrieLogger.Debug("Returning hash as of a single child for trieKey = [%s]", trieNode.trieKey)
return cryptoHashContent
}
stateTrieLogger.Debug("Recomputing hash for trieKey = [%s]", trieNode)
return util.ComputeCryptoHash(cryptoHashContent)
}
//hashFilesInDir computes h=hash(h,file bytes) for each file in a directory
//Directory entries are traversed recursively. In the end a single
//hash value is returned for the entire directory structure
func hashFilesInDir(rootDir string, dir string, hash []byte, tw *tar.Writer) ([]byte, error) {
//ReadDir returns sorted list of files in dir
fis, err := ioutil.ReadDir(rootDir + "/" + dir)
if err != nil {
return hash, fmt.Errorf("ReadDir failed %s\n", err)
}
for _, fi := range fis {
name := fmt.Sprintf("%s/%s", dir, fi.Name())
if fi.IsDir() {
var err error
hash, err = hashFilesInDir(rootDir, name, hash, tw)
if err != nil {
return hash, err
}
continue
}
buf, err := ioutil.ReadFile(rootDir + "/" + name)
if err != nil {
fmt.Printf("Error reading %s\n", err)
return hash, err
}
newSlice := make([]byte, len(hash)+len(buf))
copy(newSlice[len(buf):], hash[:])
//hash = md5.Sum(newSlice)
hash = util.ComputeCryptoHash(newSlice)
if tw != nil {
if err = addFile(tw, "src/"+name, fi, buf); err != nil {
return hash, fmt.Errorf("Error adding file to tar %s", err)
}
}
}
return hash, nil
}
func (op *obcSieve) processExecute() {
if op.currentReq != "" {
return
}
primary := op.pbft.primary(op.epoch)
exec := op.queuedExec[primary]
delete(op.queuedExec, primary)
if exec == nil {
return
}
if !(exec.View == op.epoch && op.pbft.primary(op.epoch) == exec.ReplicaId && op.pbft.activeView) {
logger.Debug("Invalid execute from %d", exec.ReplicaId)
return
}
if exec.BlockNumber != op.blockNumber+1 {
logger.Debug("Invalid block number in execute: expected %d, got %d",
op.blockNumber+1, exec.BlockNumber)
return
}
logger.Debug("Sieve replica %d received exec from %d, epoch=%d, blockNo=%d",
op.id, exec.ReplicaId, exec.View, exec.BlockNumber)
op.currentReq = base64.StdEncoding.EncodeToString(util.ComputeCryptoHash(exec.Request))
op.blockNumber++
op.begin()
tx := &pb.Transaction{}
proto.Unmarshal(exec.Request, tx)
op.currentTx = []*pb.Transaction{tx}
hashes, _ := op.cpi.ExecTXs(op.currentTx)
// for simplicity's sake, we use the pbft timer
op.pbft.startTimer(op.pbft.requestTimeout)
op.currentResult = hashes
verify := &Verify{
View: exec.View,
BlockNumber: exec.BlockNumber,
RequestDigest: op.currentReq,
ResultDigest: op.currentResult,
ReplicaId: op.id,
}
op.pbft.sign(verify)
logger.Debug("Sieve replica %d sending verify blockNo=%d",
op.id, verify.BlockNumber)
op.broadcastMsg(&SieveMessage{&SieveMessage_Verify{verify}})
op.recvVerify(verify)
}
func (c *bucketHashCalculator) computeCryptoHash() []byte {
if c.currentChaincodeID != "" {
c.appendCurrentChaincodeData()
c.currentChaincodeID = ""
c.dataNodes = nil
}
logger.Debug("Hashable content for bucket [%s]: length=%d, contentInStringForm=[%s]", c.bucketKey, len(c.hashingData), string(c.hashingData))
if util.IsNil(c.hashingData) {
return nil
}
return openchainUtil.ComputeCryptoHash(c.hashingData)
}
func expectedCryptoHashForTest(key *trieKey, value []byte, childrenHashes ...[]byte) []byte {
expectedHash := []byte{}
if key != nil {
keyBytes := key.getEncodedBytes()
expectedHash = append(expectedHash, proto.EncodeVarint(uint64(len(keyBytes)))...)
expectedHash = append(expectedHash, keyBytes...)
expectedHash = append(expectedHash, value...)
}
for _, b := range childrenHashes {
expectedHash = append(expectedHash, b...)
}
return util.ComputeCryptoHash(expectedHash)
}
func (op *obcSieve) processExecute() {
if op.currentReq != "" {
return
}
primary := op.pbft.primary(op.epoch)
exec := op.queuedExec[primary]
delete(op.queuedExec, primary)
if exec == nil {
return
}
if !(exec.View == op.epoch && op.pbft.primary(op.epoch) == exec.ReplicaId && op.pbft.activeView) {
logger.Debug("Invalid execute from %d", exec.ReplicaId)
return
}
if exec.BlockNumber != op.blockNumber+1 {
logger.Debug("Block block number in execute wrong: expected %d, got %d",
op.blockNumber, exec.BlockNumber)
return
}
op.currentReq = base64.StdEncoding.EncodeToString(util.ComputeCryptoHash(exec.Request))
logger.Debug("Sieve replica %d received exec from %d, epoch=%d, blockNo=%d from request=%s",
op.id, exec.ReplicaId, exec.View, exec.BlockNumber, op.currentReq)
// With the execution decoupled from the ordering, this sanity check is challenging and introduces a race
/*
blockchainSize, _ := op.stack.GetBlockchainSize()
blockchainSize--
if op.blockNumber != blockchainSize {
logger.Critical("Sieve replica %d block number and ledger blockchain size diverged: blockNo=%d, blockchainSize=%d", op.id, op.blockNumber, blockchainSize)
return
}
*/
op.currentView = exec.View
op.blockNumber = exec.BlockNumber
tx := &pb.Transaction{}
proto.Unmarshal(exec.Request, tx)
op.executor.Execute(exec.BlockNumber, []*pb.Transaction{tx}, &ExecutionInfo{
Validate: true,
})
}
//name could be ChaincodeID.Name or ChaincodeID.Path
func generateHashFromSignature(path string, ctor string, args []string) []byte {
fargs := ctor
if args != nil {
for _, str := range args {
fargs = fargs + str
}
}
cbytes := []byte(path + fargs)
b := make([]byte, len(cbytes))
copy(b, cbytes)
hash := util.ComputeCryptoHash(b)
return hash
}
func (instance *pbftCore) sign(s signable) error {
s.setSignature(nil)
// TODO once the crypto package is integrated
// cryptoID, _, _ := instance.cpi.GetReplicaID()
// s.setID(cryptoID)
id := []byte("XXX ID")
s.setID(id)
raw, err := s.serialize()
if err != nil {
return err
}
// s.setSignature(instance.cpi.Sign(raw))
s.setSignature(util.ComputeCryptoHash(append(id, raw...)))
return nil
}
func BenchmarkCryptoHash(b *testing.B) {
flags := flag.NewFlagSet("testParams", flag.ExitOnError)
numBytesPointer := flags.Int("NumBytes", -1, "Number of Bytes")
flags.Parse(testParams)
numBytes := *numBytesPointer
if numBytes == -1 {
b.Fatal("Missing value for parameter NumBytes")
}
randomBytes := testutil.ConstructRandomBytes(b, numBytes)
//b.Logf("byte size=%d, b.N=%d", len(randomBytes), b.N)
b.ResetTimer()
for i := 0; i < b.N; i++ {
util.ComputeCryptoHash(randomBytes)
}
}
func (instance *pbftCore) verify(s signable) error {
origSig := s.getSignature()
s.setSignature(nil)
raw, err := s.serialize()
s.setSignature(origSig)
if err != nil {
return err
}
id := s.getID()
// XXX check that s.Id() is a valid replica
// instance.cpi.Verify(s.Id(), origSig, raw)
if !reflect.DeepEqual(util.ComputeCryptoHash(append(id, raw...)), origSig) {
return fmt.Errorf("invalid signature")
}
return nil
}
// execute an opaque request which corresponds to an OBC Transaction
func (op *obcBatch) execute(tbRaw []byte) {
tb := &pb.TransactionBlock{}
err := proto.Unmarshal(tbRaw, tb)
if err != nil {
return
}
txs := tb.Transactions
txBatchID := base64.StdEncoding.EncodeToString(util.ComputeCryptoHash(tbRaw))
for i, tx := range txs {
txRaw, _ := proto.Marshal(tx)
if err = op.validate(txRaw); err != nil {
err = fmt.Errorf("Request in transaction %d from batch %s did not verify: %s", i, txBatchID, err)
logger.Error(err.Error())
return
}
}
if err := op.stack.BeginTxBatch(txBatchID); err != nil {
err = fmt.Errorf("Failed to begin transaction batch %s: %v", txBatchID, err)
logger.Error(err.Error())
return
}
if _, err := op.stack.ExecTxs(txBatchID, txs); nil != err {
err = fmt.Errorf("Fail to execute transaction batch %s: %v", txBatchID, err)
logger.Error(err.Error())
if err = op.stack.RollbackTxBatch(txBatchID); err != nil {
panic(fmt.Errorf("Unable to rollback transaction batch %s: %v", txBatchID, err))
}
return
}
if _, err = op.stack.CommitTxBatch(txBatchID, nil); err != nil {
err = fmt.Errorf("Failed to commit transaction batch %s to the ledger: %v", txBatchID, err)
logger.Error(err.Error())
if err = op.stack.RollbackTxBatch(txBatchID); err != nil {
panic(fmt.Errorf("Unable to rollback transaction batch %s: %v", txBatchID, err))
}
return
}
}
// execute an opaque request which corresponds to an OBC Transaction
func (op *obcClassic) execute(txRaw []byte) {
if err := op.validate(txRaw); err != nil {
err = fmt.Errorf("Request in transaction did not validate: %s", err)
logger.Error(err.Error())
return
}
tx := &pb.Transaction{}
err := proto.Unmarshal(txRaw, tx)
if err != nil {
err = fmt.Errorf("Unable to unmarshal transaction: %v", err)
logger.Error(err.Error())
return
}
txs := []*pb.Transaction{tx}
txBatchID := base64.StdEncoding.EncodeToString(util.ComputeCryptoHash(txRaw))
if err := op.stack.BeginTxBatch(txBatchID); err != nil {
err = fmt.Errorf("Failed to begin transaction %s: %v", txBatchID, err)
logger.Error(err.Error())
return
}
if _, err := op.stack.ExecTxs(txBatchID, txs); nil != err {
err = fmt.Errorf("Failed to execute transaction %s: %v", txBatchID, err)
logger.Error(err.Error())
if err = op.stack.RollbackTxBatch(txBatchID); err != nil {
panic(fmt.Errorf("Unable to rollback transaction %s: %v", txBatchID, err))
}
return
}
if _, err = op.stack.CommitTxBatch(txBatchID, nil); err != nil {
err = fmt.Errorf("Failed to commit transaction %s to the ledger: %v", txBatchID, err)
logger.Error(err.Error())
if err = op.stack.RollbackTxBatch(txBatchID); err != nil {
panic(fmt.Errorf("Unable to rollback transaction %s: %v", txBatchID, err))
}
return
}
}
func computeDataNodesCryptoHash(bucketKey *bucketKey, updatedNodes dataNodes, existingNodes dataNodes) []byte {
logger.Debug("Computing crypto-hash for bucket [%s]. numUpdatedNodes=[%d], numExistingNodes=[%d]", bucketKey, len(updatedNodes), len(existingNodes))
hashableContent := []byte{}
i := 0
j := 0
for i < len(updatedNodes) && j < len(existingNodes) {
updatedNode := updatedNodes[i]
existingNode := existingNodes[j]
c := bytes.Compare(updatedNode.dataKey.compositeKey, existingNode.dataKey.compositeKey)
var nextNode *dataNode
switch c {
case -1:
nextNode = updatedNode
i++
case 0:
nextNode = updatedNode
i++
j++
case 1:
nextNode = existingNode
j++
}
hashableContent = addNodeData(hashableContent, nextNode)
}
var remainingNodes dataNodes
if i < len(updatedNodes) {
remainingNodes = updatedNodes[i:]
} else if j < len(existingNodes) {
remainingNodes = existingNodes[j:]
}
for _, remainingNode := range remainingNodes {
hashableContent = addNodeData(hashableContent, remainingNode)
}
logger.Debug("Hashable content for bucket [%s] = [%s]", bucketKey, string(hashableContent))
if util.IsNil(hashableContent) {
return nil
}
return openchainUtil.ComputeCryptoHash(hashableContent)
}
// GetHash returns the hash of this block.
func (block *Block) GetHash() ([]byte, error) {
// copy the block and remove the non-hash data
blockBytes, err := block.Bytes()
if err != nil {
return nil, fmt.Errorf("Could not calculate hash of block: %s", err)
}
blockCopy, err := UnmarshallBlock(blockBytes)
if err != nil {
return nil, fmt.Errorf("Could not calculate hash of block: %s", err)
}
blockCopy.NonHashData = nil
// Hash the block
data, err := proto.Marshal(blockCopy)
if err != nil {
return nil, fmt.Errorf("Could not calculate hash of block: %s", err)
}
hash := util.ComputeCryptoHash(data)
return hash, nil
}
// ComputeCryptoHash computes crypto-hash for the data held
// returns nil if no data is present
func (stateDelta *StateDelta) ComputeCryptoHash() []byte {
if stateDelta.IsEmpty() {
return nil
}
var buffer bytes.Buffer
sortedChaincodeIds := stateDelta.GetUpdatedChaincodeIds(true)
for _, chaincodeID := range sortedChaincodeIds {
buffer.WriteString(chaincodeID)
chaincodeStateDelta := stateDelta.chaincodeStateDeltas[chaincodeID]
sortedKeys := chaincodeStateDelta.getSortedKeys()
for _, key := range sortedKeys {
buffer.WriteString(key)
updatedValue := chaincodeStateDelta.get(key)
if !updatedValue.IsDelete() {
buffer.Write(updatedValue.value)
}
}
}
hashingContent := buffer.Bytes()
logger.Debug("computing hash on %#v", hashingContent)
return util.ComputeCryptoHash(hashingContent)
}
func (bucketNode *bucketNode) computeCryptoHash() []byte {
cryptoHashContent := []byte{}
numChildren := 0
for i, childCryptoHash := range bucketNode.childrenCryptoHash {
if util.NotNil(childCryptoHash) {
numChildren++
logger.Debug("Appending crypto-hash for child bucket = [%s]", bucketNode.bucketKey.getChildKey(i))
cryptoHashContent = append(cryptoHashContent, childCryptoHash...)
}
}
if numChildren == 0 {
logger.Debug("Returning <nil> crypto-hash of bucket = [%s] - because, it has not children", bucketNode.bucketKey)
bucketNode.markedForDeletion = true
return nil
}
if numChildren == 1 {
logger.Debug("Propagating crypto-hash of single child node for bucket = [%s]", bucketNode.bucketKey)
return cryptoHashContent
}
logger.Debug("Computing crypto-hash for bucket [%s] by merging [%d] children", bucketNode.bucketKey, numChildren)
return openchainUtil.ComputeCryptoHash(cryptoHashContent)
}
// execute an opaque request which corresponds to an OBC Transaction
func (op *obcClassic) execute(txRaw []byte) {
if err := op.verify(txRaw); err != nil {
logger.Error("Request in transaction did not verify: %s", err)
return
}
tx := &pb.Transaction{}
err := proto.Unmarshal(txRaw, tx)
if err != nil {
logger.Error("Unable to unmarshal transaction: %v", err)
return
}
txs := []*pb.Transaction{tx}
txBatchID := base64.StdEncoding.EncodeToString(util.ComputeCryptoHash(txRaw))
if err := op.cpi.BeginTxBatch(txBatchID); err != nil {
logger.Error("Failed to begin transaction %s: %v", txBatchID, err)
return
}
_, errs := op.cpi.ExecTXs(txs)
if errs[len(txs)] != nil {
logger.Error("Fail to execute transaction %s: %v", txBatchID, errs)
if err = op.cpi.RollbackTxBatch(txBatchID); err != nil {
panic(fmt.Errorf("Unable to rollback transaction %s: %v", txBatchID, err))
}
return
}
if err = op.cpi.CommitTxBatch(txBatchID, txs, nil); err != nil {
logger.Error("Failed to commit transaction %s to the ledger: %v", txBatchID, err)
if err = op.cpi.RollbackTxBatch(txBatchID); err != nil {
panic(fmt.Errorf("Unable to rollback transaction %s: %v", txBatchID, err))
}
return
}
}
func ComputeCryptoHash(content ...[]byte) []byte {
return util.ComputeCryptoHash(AppendAll(content...))
}
func hashReq(req *Request) (digest string) {
reqRaw, _ := proto.Marshal(req)
return base64.StdEncoding.EncodeToString(util.ComputeCryptoHash(reqRaw))
}
func (op *obcSieve) processExecute() {
if op.pbft.sts.InProgress() {
return
}
if op.currentReq != "" {
return
}
primary := op.pbft.primary(op.epoch)
exec := op.queuedExec[primary]
delete(op.queuedExec, primary)
if exec == nil {
return
}
if !(exec.View == op.epoch && op.pbft.primary(op.epoch) == exec.ReplicaId && op.pbft.activeView) {
logger.Debug("Invalid execute from %d", exec.ReplicaId)
return
}
if exec.BlockNumber != op.blockNumber+1 {
logger.Debug("Invalid block number in execute: expected %d, got %d",
op.blockNumber+1, exec.BlockNumber)
return
}
logger.Debug("Sieve replica %d received exec from %d, epoch=%d, blockNo=%d",
op.id, exec.ReplicaId, exec.View, exec.BlockNumber)
blockchainSize, _ := op.stack.GetBlockchainSize()
blockchainSize--
if op.blockNumber != blockchainSize {
logger.Critical("Sieve replica %d block number and ledger blockchain size diverged: blockNo=%d, blockchainSize=%d", op.id, op.blockNumber, blockchainSize)
return
}
op.currentReq = base64.StdEncoding.EncodeToString(util.ComputeCryptoHash(exec.Request))
op.blockNumber++
op.begin()
tx := &pb.Transaction{}
proto.Unmarshal(exec.Request, tx)
op.currentTx = []*pb.Transaction{tx}
op.stack.ExecTxs(op.currentReq, op.currentTx)
hash, err := op.previewCommit(op.blockNumber)
if err != nil {
err = fmt.Errorf("Sieve replica %d ignoring execute: %s", op.id, err)
logger.Error(err.Error())
op.blockNumber--
op.currentReq = ""
return
}
op.currentResult = hash
logger.Debug("Sieve replica %d executed blockNo=%d, request=%s, result=%s", op.id, op.blockNumber, op.currentReq, op.currentResult)
// for simplicity's sake, we use the pbft timer
op.pbft.startTimer(op.pbft.requestTimeout)
verify := &Verify{
View: exec.View,
BlockNumber: exec.BlockNumber,
RequestDigest: op.currentReq,
ResultDigest: op.currentResult,
ReplicaId: op.id,
}
op.pbft.sign(verify)
logger.Debug("Sieve replica %d sending verify blockNo=%d",
op.id, verify.BlockNumber)
op.broadcastMsg(&SieveMessage{&SieveMessage_Verify{verify}})
op.recvVerify(verify)
}
