1 files changed, 0 insertions, 71 deletions
diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/crypto/dkg/utils.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/crypto/dkg/utils.go
deleted file mode 100644
index fa4ad9f05..000000000
--- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/crypto/dkg/utils.go
+++ /dev/null
@@ -1,71 +0,0 @@
-// 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/>.
-
-package dkg
-
-import (
-	"fmt"
-
-	"github.com/dexon-foundation/bls/ffi/go/bls"
-
-	"github.com/dexon-foundation/dexon-consensus/core/crypto"
-)
-
-// PartialSignature is a partial signature in DKG+TSIG protocol.
-type PartialSignature crypto.Signature
-
-var (
-	// ErrEmptySignature is reported if the signature is empty.
-	ErrEmptySignature = fmt.Errorf("invalid empty signature")
-)
-
-// RecoverSignature recovers TSIG signature.
-func RecoverSignature(sigs []PartialSignature, signerIDs IDs) (
-	crypto.Signature, error) {
-	blsSigs := make([]bls.Sign, len(sigs))
-	for i, sig := range sigs {
-		if len(sig.Signature) == 0 {
-			return crypto.Signature{}, ErrEmptySignature
-		}
-		if err := blsSigs[i].Deserialize([]byte(sig.Signature)); err != nil {
-			return crypto.Signature{}, err
-		}
-	}
-	var recoverSig bls.Sign
-	if err := recoverSig.Recover(blsSigs, []bls.ID(signerIDs)); err != nil {
-		return crypto.Signature{}, err
-	}
-	return crypto.Signature{
-		Type:      cryptoType,
-		Signature: recoverSig.Serialize()}, nil
-}
-
-// RecoverGroupPublicKey recovers group public key.
-func RecoverGroupPublicKey(pubShares []*PublicKeyShares) *PublicKey {
-	var pub *PublicKey
-	for _, pubShare := range pubShares {
-		pk0 := pubShare.masterPublicKey[0]
-		if pub == nil {
-			pub = &PublicKey{
-				publicKey: pk0,
-			}
-		} else {
-			pub.publicKey.Add(&pk0)
-		}
-	}
-	return pub
-}