core: vm: Add `MPKReady` to governance (#97)

* core/vm: Add DKGMPKReady
* param: update GenesisHash
* vendor: sync to latest core

1 files changed, 24 insertions, 0 deletions

diff --git a/vendor/github.com/dexon-foundation/dexon-consensus/core/crypto.go b/vendor/github.com/dexon-foundation/dexon-consensus/core/crypto.go
index 914ca0865..d4a7f0ead 100644
--- a/vendor/github.com/dexon-foundation/dexon-consensus/core/crypto.go
+++ b/vendor/github.com/dexon-foundation/dexon-consensus/core/crypto.go
@@ -243,6 +243,30 @@ func verifyDKGPartialSignatureSignature(
 	return true, nil
 }
 
+func hashDKGMPKReady(ready *typesDKG.MPKReady) common.Hash {
+	binaryRound := make([]byte, 8)
+	binary.LittleEndian.PutUint64(binaryRound, ready.Round)
+
+	return crypto.Keccak256Hash(
+		ready.ProposerID.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)