1 files changed, 0 insertions, 264 deletions
diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/crypto.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/crypto.go
deleted file mode 100644
index 2b7f7a7fc..000000000
--- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/crypto.go
+++ /dev/null
@@ -1,264 +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 core
-
-import (
-	"encoding/binary"
-
-	"github.com/dexon-foundation/dexon-consensus/common"
-	"github.com/dexon-foundation/dexon-consensus/core/crypto"
-	"github.com/dexon-foundation/dexon-consensus/core/types"
-	typesDKG "github.com/dexon-foundation/dexon-consensus/core/types/dkg"
-)
-
-func hashWitness(witness *types.Witness) (common.Hash, error) {
-	binaryHeight := make([]byte, 8)
-	binary.LittleEndian.PutUint64(binaryHeight, witness.Height)
-	return crypto.Keccak256Hash(
-		binaryHeight,
-		witness.Data), nil
-}
-
-func hashBlock(block *types.Block) (common.Hash, error) {
-	hashPosition := hashPosition(block.Position)
-	// Handling Block.Acks.
-	binaryAcks := make([][]byte, len(block.Acks))
-	for idx, ack := range block.Acks {
-		binaryAcks[idx] = ack[:]
-	}
-	hashAcks := crypto.Keccak256Hash(binaryAcks...)
-	binaryTimestamp, err := block.Timestamp.UTC().MarshalBinary()
-	if err != nil {
-		return common.Hash{}, err
-	}
-	binaryWitness, err := hashWitness(&block.Witness)
-	if err != nil {
-		return common.Hash{}, err
-	}
-
-	hash := crypto.Keccak256Hash(
-		block.ProposerID.Hash[:],
-		block.ParentHash[:],
-		hashPosition[:],
-		hashAcks[:],
-		binaryTimestamp[:],
-		block.PayloadHash[:],
-		binaryWitness[:])
-	return hash, nil
-}
-
-func verifyBlockSignature(pubkey crypto.PublicKey,
-	block *types.Block, sig crypto.Signature) (bool, error) {
-	hash, err := hashBlock(block)
-	if err != nil {
-		return false, err
-	}
-	return pubkey.VerifySignature(hash, sig), nil
-}
-
-func hashVote(vote *types.Vote) common.Hash {
-	binaryPeriod := make([]byte, 8)
-	binary.LittleEndian.PutUint64(binaryPeriod, vote.Period)
-
-	hashPosition := hashPosition(vote.Position)
-
-	hash := crypto.Keccak256Hash(
-		vote.ProposerID.Hash[:],
-		vote.BlockHash[:],
-		binaryPeriod,
-		hashPosition[:],
-		[]byte{byte(vote.Type)},
-	)
-	return hash
-}
-
-func verifyVoteSignature(vote *types.Vote) (bool, error) {
-	hash := hashVote(vote)
-	pubKey, err := crypto.SigToPub(hash, vote.Signature)
-	if err != nil {
-		return false, err
-	}
-	if vote.ProposerID != types.NewNodeID(pubKey) {
-		return false, nil
-	}
-	return true, nil
-}
-
-func hashCRS(block *types.Block, crs common.Hash) common.Hash {
-	hashPos := hashPosition(block.Position)
-	return crypto.Keccak256Hash(crs[:], hashPos[:])
-}
-
-func verifyCRSSignature(block *types.Block, crs common.Hash) (
-	bool, error) {
-	hash := hashCRS(block, crs)
-	pubKey, err := crypto.SigToPub(hash, block.CRSSignature)
-	if err != nil {
-		return false, err
-	}
-	if block.ProposerID != types.NewNodeID(pubKey) {
-		return false, nil
-	}
-	return true, nil
-}
-
-func hashPosition(position types.Position) common.Hash {
-	binaryChainID := make([]byte, 4)
-	binary.LittleEndian.PutUint32(binaryChainID, position.ChainID)
-
-	binaryHeight := make([]byte, 8)
-	binary.LittleEndian.PutUint64(binaryHeight, position.Height)
-
-	return crypto.Keccak256Hash(
-		binaryChainID,
-		binaryHeight,
-	)
-}
-
-func hashDKGPrivateShare(prvShare *typesDKG.PrivateShare) common.Hash {
-	binaryRound := make([]byte, 8)
-	binary.LittleEndian.PutUint64(binaryRound, prvShare.Round)
-
-	return crypto.Keccak256Hash(
-		prvShare.ProposerID.Hash[:],
-		prvShare.ReceiverID.Hash[:],
-		binaryRound,
-		prvShare.PrivateShare.Bytes(),
-	)
-}
-
-func verifyDKGPrivateShareSignature(
-	prvShare *typesDKG.PrivateShare) (bool, error) {
-	hash := hashDKGPrivateShare(prvShare)
-	pubKey, err := crypto.SigToPub(hash, prvShare.Signature)
-	if err != nil {
-		return false, err
-	}
-	if prvShare.ProposerID != types.NewNodeID(pubKey) {
-		return false, nil
-	}
-	return true, nil
-}
-
-func hashDKGMasterPublicKey(mpk *typesDKG.MasterPublicKey) common.Hash {
-	binaryRound := make([]byte, 8)
-	binary.LittleEndian.PutUint64(binaryRound, mpk.Round)
-
-	return crypto.Keccak256Hash(
-		mpk.ProposerID.Hash[:],
-		mpk.DKGID.GetLittleEndian(),
-		mpk.PublicKeyShares.MasterKeyBytes(),
-		binaryRound,
-	)
-}
-
-// VerifyDKGMasterPublicKeySignature verifies DKGMasterPublicKey signature.
-func VerifyDKGMasterPublicKeySignature(
-	mpk *typesDKG.MasterPublicKey) (bool, error) {
-	hash := hashDKGMasterPublicKey(mpk)
-	pubKey, err := crypto.SigToPub(hash, mpk.Signature)
-	if err != nil {
-		return false, err
-	}
-	if mpk.ProposerID != types.NewNodeID(pubKey) {
-		return false, nil
-	}
-	return true, nil
-}
-
-func hashDKGComplaint(complaint *typesDKG.Complaint) common.Hash {
-	binaryRound := make([]byte, 8)
-	binary.LittleEndian.PutUint64(binaryRound, complaint.Round)
-
-	hashPrvShare := hashDKGPrivateShare(&complaint.PrivateShare)
-
-	return crypto.Keccak256Hash(
-		complaint.ProposerID.Hash[:],
-		binaryRound,
-		hashPrvShare[:],
-	)
-}
-
-// VerifyDKGComplaintSignature verifies DKGCompliant signature.
-func VerifyDKGComplaintSignature(
-	complaint *typesDKG.Complaint) (bool, error) {
-	if complaint.Round != complaint.PrivateShare.Round {
-		return false, nil
-	}
-	hash := hashDKGComplaint(complaint)
-	pubKey, err := crypto.SigToPub(hash, complaint.Signature)
-	if err != nil {
-		return false, err
-	}
-	if complaint.ProposerID != types.NewNodeID(pubKey) {
-		return false, nil
-	}
-	if !complaint.IsNack() {
-		return verifyDKGPrivateShareSignature(&complaint.PrivateShare)
-	}
-	return true, nil
-}
-
-func hashDKGPartialSignature(psig *typesDKG.PartialSignature) common.Hash {
-	binaryRound := make([]byte, 8)
-	binary.LittleEndian.PutUint64(binaryRound, psig.Round)
-
-	return crypto.Keccak256Hash(
-		psig.ProposerID.Hash[:],
-		binaryRound,
-		psig.Hash[:],
-		psig.PartialSignature.Signature[:],
-	)
-}
-
-func verifyDKGPartialSignatureSignature(
-	psig *typesDKG.PartialSignature) (bool, error) {
-	hash := hashDKGPartialSignature(psig)
-	pubKey, err := crypto.SigToPub(hash, psig.Signature)
-	if err != nil {
-		return false, err
-	}
-	if psig.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)
-
-	return crypto.Keccak256Hash(
-		final.ProposerID.Hash[:],
-		binaryRound,
-	)
-}
-
-// VerifyDKGFinalizeSignature verifies DKGFinalize signature.
-func VerifyDKGFinalizeSignature(
-	final *typesDKG.Finalize) (bool, error) {
-	hash := hashDKGFinalize(final)
-	pubKey, err := crypto.SigToPub(hash, final.Signature)
-	if err != nil {
-		return false, err
-	}
-	if final.ProposerID != types.NewNodeID(pubKey) {
-		return false, nil
-	}
-	return true, nil
-}