From 4bf8e9c1cbf4b9892ff2718673735bb370e97dc5 Mon Sep 17 00:00:00 2001
From: Jimmy Hu <jimmy.hu@dexon.org>
Date: Fri, 4 Jan 2019 10:38:29 +0800
Subject: core/utils: Add Penalty checker and VerifyDKGComplaint (#393)
* Add Util for checking penalty
* Add VerifyDKGComplaints
* Fixup and rename
* Happy New Year!
---
core/utils/utils.go | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 49 insertions(+)
(limited to 'core/utils/utils.go')
diff --git a/core/utils/utils.go b/core/utils/utils.go
index 3e3803d..687d0ea 100644
--- a/core/utils/utils.go
+++ b/core/utils/utils.go
@@ -1,3 +1,20 @@
+// Copyright 2018 The dexon-consensus Authors
+// This file is part of the dexon-consensus library.
+//
+// The dexon-consensus library is free software: you can redistribute it
+// and/or modify it under the terms of the GNU Lesser General Public License as
+// published by the Free Software Foundation, either version 3 of the License,
+// or (at your option) any later version.
+//
+// The dexon-consensus library is distributed in the hope that it will be
+// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
+// General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the dexon-consensus library. If not, see
+// <http://www.gnu.org/licenses/>.
+
// This file is part of the dexon-consensus library.
//
// The dexon-consensus library is free software: you can redistribute it
@@ -21,6 +38,7 @@ import (
"github.com/dexon-foundation/dexon-consensus/common"
"github.com/dexon-foundation/dexon-consensus/core/types"
+ typesDKG "github.com/dexon-foundation/dexon-consensus/core/types/dkg"
)
type configAccessor interface {
@@ -57,5 +75,36 @@ func GetCRSWithPanic(accessor crsAccessor, round uint64,
panic(fmt.Errorf("CRS is not ready %v", round))
}
return crs
+}
+// VerifyDKGComplaint verifies if its a valid DKGCompliant.
+func VerifyDKGComplaint(
+ complaint *typesDKG.Complaint, mpk *typesDKG.MasterPublicKey) (bool, error) {
+ ok, err := VerifyDKGComplaintSignature(complaint)
+ if err != nil {
+ return false, err
+ }
+ if !ok {
+ return false, nil
+ }
+ if complaint.IsNack() {
+ return true, nil
+ }
+ if complaint.Round != mpk.Round {
+ return false, nil
+ }
+ ok, err = VerifyDKGMasterPublicKeySignature(mpk)
+ if err != nil {
+ return false, err
+ }
+ if !ok {
+ return false, nil
+ }
+ ok, err = mpk.PublicKeyShares.VerifyPrvShare(
+ typesDKG.NewID(complaint.PrivateShare.ReceiverID),
+ &complaint.PrivateShare.PrivateShare)
+ if err != nil {
+ return false, err
+ }
+ return ok, nil
}
--
cgit