diff options
Diffstat (limited to 'core/crypto.go')
| -rw-r--r-- | core/crypto.go | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/core/crypto.go b/core/crypto.go index 96ea54f..d4a7f0e 100644 --- a/core/crypto.go +++ b/core/crypto.go @@ -252,6 +252,21 @@ func hashDKGMPKReady(ready *typesDKG.MPKReady) common.Hash { binaryRound, ) } + +// VerifyDKGMPKReadySignature verifies DKGMPKReady signature. +func VerifyDKGMPKReadySignature( + ready *typesDKG.MPKReady) (bool, error) { + hash := hashDKGMPKReady(ready) + pubKey, err := crypto.SigToPub(hash, ready.Signature) + if err != nil { + return false, err + } + if ready.ProposerID != types.NewNodeID(pubKey) { + return false, nil + } + return true, nil +} + func hashDKGFinalize(final *typesDKG.Finalize) common.Hash { binaryRound := make([]byte, 8) binary.LittleEndian.PutUint64(binaryRound, final.Round) |