The core protocol of WoopChain
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
woop/staking/verify/verify.go

54 lines
1.3 KiB

package verify
import (
"math/big"
"github.com/ethereum/go-ethereum/common"
"github.com/harmony-one/bls/ffi/go/bls"
"github.com/harmony-one/harmony/consensus/quorum"
"github.com/harmony-one/harmony/consensus/signature"
"github.com/harmony-one/harmony/core"
bls_cosi "github.com/harmony-one/harmony/crypto/bls"
"github.com/harmony-one/harmony/shard"
"github.com/pkg/errors"
)
var (
errQuorumVerifyAggSign = errors.New("insufficient voting power to verify aggregate sig")
errAggregateSigFail = errors.New("could not verify hash of aggregate signature")
)
// AggregateSigForCommittee ..
func AggregateSigForCommittee(
chain core.BlockChain,
committee *shard.Committee,
decider quorum.Decider,
aggSignature *bls.Sign,
hash common.Hash,
blockNum, viewID uint64,
epoch *big.Int,
bitmap []byte,
) error {
committerKeys, err := committee.BLSPublicKeys()
if err != nil {
return err
}
mask, err := bls_cosi.NewMask(committerKeys, nil)
if err != nil {
return err
}
if err := mask.SetMask(bitmap); err != nil {
return err
}
if !decider.IsQuorumAchievedByMask(mask, blockNum) {
return errQuorumVerifyAggSign
}
commitPayload := signature.ConstructCommitPayload(chain, epoch, hash, blockNum, viewID)
if !aggSignature.VerifyHash(mask.AggregatePublic, commitPayload) {
return errAggregateSigFail
}
return nil
}