/
sign.go
309 lines (281 loc) · 8.03 KB
/
sign.go
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package grpc
import (
"context"
"encoding/json"
"errors"
"fmt"
"math/rand"
"sort"
"strconv"
"strings"
"sync"
"time"
"github.com/meshplus/bitxhub-core/tss"
"github.com/meshplus/bitxhub-core/tss/conversion"
"github.com/meshplus/bitxhub-model/pb"
"github.com/meshplus/bitxhub/internal/model"
"github.com/meshplus/bitxhub/pkg/utils"
"github.com/sirupsen/logrus"
)
func (cbs *ChainBrokerService) GetMultiSigns(ctx context.Context, req *pb.GetSignsRequest) (*pb.SignResponse, error) {
var (
wg = sync.WaitGroup{}
result = make(map[string][]byte)
)
signers := []string{}
for id := range cbs.api.Network().OtherPeers() {
signers = append(signers, strconv.Itoa(int(id)))
}
req.Extra = []byte(strings.Join(signers, ","))
wg.Add(1)
go func(result map[string][]byte) {
for k, v := range cbs.api.Broker().FetchSignsFromOtherPeers(req) {
result[k] = v
}
wg.Done()
}(result)
address, sign, _, err := cbs.api.Broker().GetSign(req, nil)
wg.Wait()
if err != nil {
cbs.logger.WithFields(logrus.Fields{
"id": req.Content,
"err": err.Error(),
}).Errorf("Get sign on current node")
return nil, fmt.Errorf("get sign on current node failed: %w", err)
} else {
result[address] = sign
}
return &pb.SignResponse{
Sign: result,
}, nil
}
func (cbs *ChainBrokerService) GetTssSigns(ctx context.Context, req *pb.GetSignsRequest) (*pb.SignResponse, error) {
if !cbs.config.Tss.EnableTSS {
return nil, fmt.Errorf("the TSS switch of the bitxhub is not enabled, so the TSS signature cannot be obtained")
}
var (
wg = sync.WaitGroup{}
result = [][]byte{}
)
// 1. check req type
if !utils.IsTssReq(req) {
return nil, fmt.Errorf("req type is not tss req")
}
// 2. get tss info
signersALL := []string{}
poolPkData := []byte{}
// todo fbz:从内存拿tss
tssInfo, err := cbs.api.Broker().GetTssInfo()
tssFlag := true
if err != nil {
// 当前节点没有tss信息,向其他节点请求
tssInfos := cbs.api.Broker().FetchTssInfoFromOtherPeers()
signersALL, poolPkData, err = getConsensusTssInfoParties(tssInfos, cbs.api.Broker().GetQuorum())
if err != nil {
return nil, fmt.Errorf("get tss info from other peers error: %v", err)
}
tssFlag = false
} else {
for id, _ := range tssInfo.PartiesPkMap {
signersALL = append(signersALL, id)
}
poolPkData = tssInfo.Pubkey
}
poolPk, err := conversion.GetECDSAPubKeyFromPubKeyData(poolPkData)
if err != nil {
return nil, fmt.Errorf("failed to get ECDSA pubKey from pubkey data: %v", err)
}
// 3. make a tss req with threshold signers
tssReq := &pb.GetSignsRequest{
Type: req.Type,
Content: req.Content,
}
for {
// 4. check signers num
if len(signersALL) < int(cbs.api.Broker().GetQuorum()) {
cbs.logger.WithFields(logrus.Fields{
"signers": signersALL,
}).Errorf("too less signers")
break
}
// 5. choose signers randomly
nums := RandRangeNumbers(0, len(signersALL)-1, int(cbs.api.Broker().GetQuorum()))
tssSigners := []string{}
for _, i := range nums {
tssSigners = append(tssSigners, signersALL[i])
}
cbs.logger.Infof("====================== tss all signers: %s, signers: %s", strings.Join(signersALL, ","), strings.Join(tssSigners, ","))
tssReq.Extra = []byte(strings.Join(tssSigners, ","))
// 6. send sign req to others
wg.Add(1)
go func() {
cbs.api.Broker().FetchSignsFromOtherPeers(tssReq)
tssSignResCh := make(chan *pb.Message)
tssSignResSub := cbs.api.Feed().SubscribeTssSignRes(tssSignResCh)
defer tssSignResSub.Unsubscribe()
for {
select {
case m := <-tssSignResCh:
signRes := &model.MerkleWrapperSign{}
if err := signRes.Unmarshal(m.Data); err != nil {
cbs.logger.WithFields(logrus.Fields{
"err": err,
}).Errorf("unmarshal sign res error")
continue
//return
}
if err := utils.VerifyTssSigns(signRes.Signature, poolPk, cbs.logger); err != nil {
cbs.logger.WithFields(logrus.Fields{}).Errorf("Verify tss signs error")
//break
} else {
result = append(result, signRes.Signature)
cbs.logger.WithFields(logrus.Fields{}).Debug("get verified tss signature from other peers")
wg.Done()
return
}
case <-time.After(cbs.config.Tss.KeySignTimeout):
cbs.logger.WithFields(logrus.Fields{}).Warnf("wait for sign from other peers timeout: %v", cbs.config.Tss.KeySignTimeout)
wg.Done()
return
}
}
}()
// 7. get sign by ourself
if tssFlag {
addr, sign, culprits, err := cbs.api.Broker().GetSign(tssReq, tssSigners)
wg.Wait()
// todo fbz: 优先取result结果
if err == nil {
return &pb.SignResponse{
Sign: map[string][]byte{
addr: convertSignData(sign),
},
}, nil
} else if errors.Is(err, tss.ErrNotActiveSigner) {
if len(result) != 0 {
return &pb.SignResponse{
Sign: map[string][]byte{
addr: convertSignData(result[0]),
},
}, nil
} else {
return nil, fmt.Errorf("get tss signs error")
}
}
// 8. handle culprits
cbs.logger.WithFields(logrus.Fields{
"id": req.Content,
"culprits": culprits,
"err": err.Error(),
}).Errorf("Get tss sign on current node")
if culprits == nil {
return nil, err
}
for _, idC := range culprits {
for i, idS := range signersALL {
if idC == idS {
if i == 0 {
signersALL = signersALL[1:]
} else {
signersALL = append(signersALL[:i-1], signersALL[i+1:]...)
}
}
}
}
} else {
// 自己不是签名节点,无法签名
wg.Wait()
if len(result) != 0 {
return &pb.SignResponse{
Sign: map[string][]byte{
cbs.api.Broker().GetPrivKey().Address: convertSignData(result[0]),
},
}, nil
} else {
return nil, fmt.Errorf("get tss signs error")
}
}
}
return nil, fmt.Errorf("GetTSSSigns error")
}
func convertSignData(signData []byte) []byte {
signs := []conversion.Signature{}
err := json.Unmarshal(signData, &signs)
if err != nil || len(signs) < 1 {
fmt.Printf("convertSignData: %v", err)
}
return signs[0].SignEthData
//// todo: fbz,支持批量签名
//signDatas := [][]byte{}
//for _, sign := range signs {
// signDatas = append(signDatas, sign.SignEthData)
//}
//
//signDatasByte, _ := json.Marshal(signDatas)
//
//return signDatasByte
}
func RandRangeNumbers(min, max, count int) []int {
//检查参数
if max < min || (max-min+1) < count {
return nil
}
nums := make([]int, max-min+1)
position := -1 //记录nums[-min]的位置
if min <= 0 && max >= 0 { //获取范围内有0,则先用max+1代替
position = -min
nums[position] = max + 1
}
//随机数生成器,加入时间戳保证每次生成的随机数不一样
r := rand.New(rand.NewSource(time.Now().UnixNano()))
for i := 0; i < count; i++ {
num := r.Intn(max - min + 1)
if nums[i] == 0 { //代表未赋值
nums[i] = min + i
}
if nums[num] == 0 { //代表未赋值
nums[num] = min + num
}
if position != -1 { //此时需要记录位置
if i == position {
position = num
} else if num == position {
position = i
}
}
nums[i], nums[num] = nums[num], nums[i]
}
if position != -1 { //证明有位置记录,则还原为0
nums[position] = 0
}
return nums[0:count]
}
func getConsensusTssInfoParties(infos []*pb.TssInfo, quorum uint64) ([]string, []byte, error) {
freqInfos := make(map[string]int, len(infos))
for _, info := range infos {
ids := []string{}
for id, _ := range info.PartiesPkMap {
ids = append(ids, id)
}
sort.Slice(ids, func(i, j int) bool {
return ids[i] > ids[j]
})
idsStr := strings.Join(ids, ",")
infosStr := fmt.Sprintf("%s-%s", idsStr, string(info.Pubkey))
freqInfos[infosStr]++
}
maxFreq := -1
var consensusInfo string
for infoStr, counter := range freqInfos {
if counter > maxFreq {
maxFreq = counter
consensusInfo = infoStr
}
}
if maxFreq < int(quorum) {
return nil, nil, fmt.Errorf("there is no consensus parties, maxFreq: %d, quorum: %d", maxFreq, quorum)
}
idsAddr := strings.Split(strings.Split(consensusInfo, "-")[0], ",")
pk := strings.Split(consensusInfo, "-")[1]
return idsAddr, []byte(pk), nil
}