abci: Vote Extension 1 (#6646)

* add proto, add boilerplates

* add canonical

* fix tests

* add vote signing test

* Update internal/consensus/msgs_test.go

* modify state execution in progress

* add extension signing

* VoteExtension -> ExtendVote

* apply review

* update data structures

* Add comments

* Apply suggestions from code review

Co-authored-by: Aleksandr Bezobchuk <alexanderbez@users.noreply.github.com>

* *Signed -> *ToSign

* add Vote to RequestExtendVote

* apply reviews

* Apply suggestions from code review

Co-authored-by: Dev Ojha <ValarDragon@users.noreply.github.com>
Co-authored-by: Aleksandr Bezobchuk <alexanderbez@users.noreply.github.com>

* fix typo, modify proto

Co-authored-by: Aleksandr Bezobchuk <alexanderbez@users.noreply.github.com>
Co-authored-by: Dev Ojha <ValarDragon@users.noreply.github.com>

abci/client/client.go

@@ -46,6 +46,8 @@ type Client interface {
 	Commit(context.Context) (*types.ResponseCommit, error)
 	InitChain(context.Context, types.RequestInitChain) (*types.ResponseInitChain, error)
 	PrepareProposal(context.Context, types.RequestPrepareProposal) (*types.ResponsePrepareProposal, error)
+	ExtendVote(context.Context, types.RequestExtendVote) (*types.ResponseExtendVote, error)
+	VerifyVoteExtension(context.Context, types.RequestVerifyVoteExtension) (*types.ResponseVerifyVoteExtension, error)
 	BeginBlock(context.Context, types.RequestBeginBlock) (*types.ResponseBeginBlock, error)
 	EndBlock(context.Context, types.RequestEndBlock) (*types.ResponseEndBlock, error)
 	ListSnapshots(context.Context, types.RequestListSnapshots) (*types.ResponseListSnapshots, error)

abci/client/grpc_client.go

@@ -376,3 +376,19 @@ func (cli *grpcClient) PrepareProposal(
 	req := types.ToRequestPrepareProposal(params)
 	return cli.client.PrepareProposal(ctx, req.GetPrepareProposal(), grpc.WaitForReady(true))
 }
+
+func (cli *grpcClient) ExtendVote(
+	ctx context.Context,
+	params types.RequestExtendVote) (*types.ResponseExtendVote, error) {
+
+	req := types.ToRequestExtendVote(params)
+	return cli.client.ExtendVote(ctx, req.GetExtendVote(), grpc.WaitForReady(true))
+}
+
+func (cli *grpcClient) VerifyVoteExtension(
+	ctx context.Context,
+	params types.RequestVerifyVoteExtension) (*types.ResponseVerifyVoteExtension, error) {
+
+	req := types.ToRequestVerifyVoteExtension(params)
+	return cli.client.VerifyVoteExtension(ctx, req.GetVerifyVoteExtension(), grpc.WaitForReady(true))
+}

abci/client/local_client.go

@@ -233,6 +233,28 @@ func (app *localClient) PrepareProposal(
 	return &res, nil
 }
 
+func (app *localClient) ExtendVote(
+	ctx context.Context,
+	req types.RequestExtendVote) (*types.ResponseExtendVote, error) {
+
+	app.mtx.Lock()
+	defer app.mtx.Unlock()
+
+	res := app.Application.ExtendVote(req)
+	return &res, nil
+}
+
+func (app *localClient) VerifyVoteExtension(
+	ctx context.Context,
+	req types.RequestVerifyVoteExtension) (*types.ResponseVerifyVoteExtension, error) {
+
+	app.mtx.Lock()
+	defer app.mtx.Unlock()
+
+	res := app.Application.VerifyVoteExtension(req)
+	return &res, nil
+}
+
 //-------------------------------------------------------
 
 func (app *localClient) callback(req *types.Request, res *types.Response) *ReqRes {

abci/client/mocks/client.go

@@ -238,6 +238,29 @@ func (_m *Client) Error() error {
 	return r0
 }
 
+// ExtendVote provides a mock function with given fields: _a0, _a1
+func (_m *Client) ExtendVote(_a0 context.Context, _a1 types.RequestExtendVote) (*types.ResponseExtendVote, error) {
+	ret := _m.Called(_a0, _a1)
+
+	var r0 *types.ResponseExtendVote
+	if rf, ok := ret.Get(0).(func(context.Context, types.RequestExtendVote) *types.ResponseExtendVote); ok {
+		r0 = rf(_a0, _a1)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*types.ResponseExtendVote)
+		}
+	}
+
+	var r1 error
+	if rf, ok := ret.Get(1).(func(context.Context, types.RequestExtendVote) error); ok {
+		r1 = rf(_a0, _a1)
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}
+
 // Flush provides a mock function with given fields: _a0
 func (_m *Client) Flush(_a0 context.Context) error {
 	ret := _m.Called(_a0)
@@ -483,6 +506,29 @@ func (_m *Client) String() string {
 	return r0
 }
 
+// VerifyVoteExtension provides a mock function with given fields: _a0, _a1
+func (_m *Client) VerifyVoteExtension(_a0 context.Context, _a1 types.RequestVerifyVoteExtension) (*types.ResponseVerifyVoteExtension, error) {
+	ret := _m.Called(_a0, _a1)
+
+	var r0 *types.ResponseVerifyVoteExtension
+	if rf, ok := ret.Get(0).(func(context.Context, types.RequestVerifyVoteExtension) *types.ResponseVerifyVoteExtension); ok {
+		r0 = rf(_a0, _a1)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*types.ResponseVerifyVoteExtension)
+		}
+	}
+
+	var r1 error
+	if rf, ok := ret.Get(1).(func(context.Context, types.RequestVerifyVoteExtension) error); ok {
+		r1 = rf(_a0, _a1)
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}
+
 // Wait provides a mock function with given fields:
 func (_m *Client) Wait() {
 	_m.Called()

abci/client/socket_client.go

@@ -415,6 +415,28 @@ func (cli *socketClient) PrepareProposal(
 	return reqres.Response.GetPrepareProposal(), nil
 }
 
+func (cli *socketClient) ExtendVote(
+	ctx context.Context,
+	req types.RequestExtendVote) (*types.ResponseExtendVote, error) {
+
+	reqres, err := cli.queueRequestAndFlush(ctx, types.ToRequestExtendVote(req))
+	if err != nil {
+		return nil, err
+	}
+	return reqres.Response.GetExtendVote(), nil
+}
+
+func (cli *socketClient) VerifyVoteExtension(
+	ctx context.Context,
+	req types.RequestVerifyVoteExtension) (*types.ResponseVerifyVoteExtension, error) {
+
+	reqres, err := cli.queueRequestAndFlush(ctx, types.ToRequestVerifyVoteExtension(req))
+	if err != nil {
+		return nil, err
+	}
+	return reqres.Response.GetVerifyVoteExtension(), nil
+}
+
 //----------------------------------------
 
 // queueRequest enqueues req onto the queue. If the queue is full, it ether
@@ -526,6 +548,12 @@ func resMatchesReq(req *types.Request, res *types.Response) (ok bool) {
 		_, ok = res.Value.(*types.Response_Query)
 	case *types.Request_InitChain:
 		_, ok = res.Value.(*types.Response_InitChain)
+	case *types.Request_PrepareProposal:
+		_, ok = res.Value.(*types.Response_PrepareProposal)
+	case *types.Request_ExtendVote:
+		_, ok = res.Value.(*types.Response_ExtendVote)
+	case *types.Request_VerifyVoteExtension:
+		_, ok = res.Value.(*types.Response_VerifyVoteExtension)
 	case *types.Request_BeginBlock:
 		_, ok = res.Value.(*types.Response_BeginBlock)
 	case *types.Request_EndBlock:
@@ -538,8 +566,6 @@ func resMatchesReq(req *types.Request, res *types.Response) (ok bool) {
 		_, ok = res.Value.(*types.Response_ListSnapshots)
 	case *types.Request_OfferSnapshot:
 		_, ok = res.Value.(*types.Response_OfferSnapshot)
-	case *types.Request_PrepareProposal:
-		_, ok = res.Value.(*types.Response_PrepareProposal)
 	}
 	return ok
 }

abci/example/kvstore/README.md

@@ -4,7 +4,7 @@ There are two app's here: the KVStoreApplication and the PersistentKVStoreApplic
 
 ## KVStoreApplication
 
-The KVStoreApplication is a simple merkle key-value store. 
+The KVStoreApplication is a simple merkle key-value store.
 Transactions of the form `key=value` are stored as key-value pairs in the tree.
 Transactions without an `=` sign set the value to the key.
 The app has no replay protection (other than what the mempool provides).
@@ -12,7 +12,7 @@ The app has no replay protection (other than what the mempool provides).
 ## PersistentKVStoreApplication
 
 The PersistentKVStoreApplication wraps the KVStoreApplication
-and provides two additional features:
+and provides three additional features:
 
 1) persistence of state across app restarts (using Tendermint's ABCI-Handshake mechanism)
 2) validator set changes
@@ -27,4 +27,4 @@ Validator set changes are effected using the following transaction format:
 
 where `pubkeyN` is a base64-encoded 32-byte ed25519 key and `powerN` is a new voting power for the validator with `pubkeyN` (possibly a new one).
 To remove a validator from the validator set, set power to `0`.
-There is no sybil protection against new validators joining. 
+There is no sybil protection against new validators joining.

abci/example/kvstore/persistent_kvstore.go

@@ -166,6 +166,16 @@ func (app *PersistentKVStoreApplication) ApplySnapshotChunk(
 	return types.ResponseApplySnapshotChunk{Result: types.ResponseApplySnapshotChunk_ABORT}
 }
 
+func (app *PersistentKVStoreApplication) ExtendVote(
+	req types.RequestExtendVote) types.ResponseExtendVote {
+	return types.ResponseExtendVote{}
+}
+
+func (app *PersistentKVStoreApplication) VerifyVoteExtension(
+	req types.RequestVerifyVoteExtension) types.ResponseVerifyVoteExtension {
+	return types.ResponseVerifyVoteExtension{}
+}
+
 func (app *PersistentKVStoreApplication) PrepareProposal(
 	req types.RequestPrepareProposal) types.ResponsePrepareProposal {
 	if len(req.BlockData) >= 1 {

abci/server/socket_server.go

@@ -249,6 +249,12 @@ func (s *SocketServer) handleRequest(req *types.Request, responses chan<- *types
 	case *types.Request_ApplySnapshotChunk:
 		res := s.app.ApplySnapshotChunk(*r.ApplySnapshotChunk)
 		responses <- types.ToResponseApplySnapshotChunk(res)
+	case *types.Request_ExtendVote:
+		res := s.app.ExtendVote(*r.ExtendVote)
+		responses <- types.ToResponseExtendVote(res)
+	case *types.Request_VerifyVoteExtension:
+		res := s.app.VerifyVoteExtension(*r.VerifyVoteExtension)
+		responses <- types.ToResponseVerifyVoteExtension(res)
 	default:
 		responses <- types.ToResponseException("Unknown request")
 	}

abci/types/application.go

@@ -23,6 +23,8 @@ type Application interface {
 	DeliverTx(RequestDeliverTx) ResponseDeliverTx    // Deliver a tx for full processing
 	EndBlock(RequestEndBlock) ResponseEndBlock       // Signals the end of a block, returns changes to the validator set
 	Commit() ResponseCommit                          // Commit the state and return the application Merkle root hash
+	ExtendVote(RequestExtendVote) ResponseExtendVote                            // Create application specific vote extension
+	VerifyVoteExtension(RequestVerifyVoteExtension) ResponseVerifyVoteExtension // Verify application's vote extension data
 
 	// State Sync Connection
 	ListSnapshots(RequestListSnapshots) ResponseListSnapshots                // List available snapshots
@@ -59,6 +61,14 @@ func (BaseApplication) Commit() ResponseCommit {
 	return ResponseCommit{}
 }
 
+func (BaseApplication) ExtendVote(req RequestExtendVote) ResponseExtendVote {
+	return ResponseExtendVote{}
+}
+
+func (BaseApplication) VerifyVoteExtension(req RequestVerifyVoteExtension) ResponseVerifyVoteExtension {
+	return ResponseVerifyVoteExtension{}
+}
+
 func (BaseApplication) Query(req RequestQuery) ResponseQuery {
 	return ResponseQuery{Code: CodeTypeOK}
 }
@@ -178,6 +188,18 @@ func (app *GRPCApplication) ApplySnapshotChunk(
 	return &res, nil
 }
 
+func (app *GRPCApplication) ExtendVote(
+	ctx context.Context, req *RequestExtendVote) (*ResponseExtendVote, error) {
+	res := app.app.ExtendVote(*req)
+	return &res, nil
+}
+
+func (app *GRPCApplication) VerifyVoteExtension(
+	ctx context.Context, req *RequestVerifyVoteExtension) (*ResponseVerifyVoteExtension, error) {
+	res := app.app.VerifyVoteExtension(*req)
+  return &res, nil
+}
+
 func (app *GRPCApplication) PrepareProposal(
 	ctx context.Context, req *RequestPrepareProposal) (*ResponsePrepareProposal, error) {
 	res := app.app.PrepareProposal(*req)

abci/types/messages.go

@@ -110,6 +110,18 @@ func ToRequestApplySnapshotChunk(req RequestApplySnapshotChunk) *Request {
 	}
 }
 
+func ToRequestExtendVote(req RequestExtendVote) *Request {
+	return &Request{
+		Value: &Request_ExtendVote{&req},
+	}
+}
+
+func ToRequestVerifyVoteExtension(req RequestVerifyVoteExtension) *Request {
+	return &Request{
+		Value: &Request_VerifyVoteExtension{&req},
+  }
+}
+
 func ToRequestPrepareProposal(req RequestPrepareProposal) *Request {
 	return &Request{
 		Value: &Request_PrepareProposal{&req},
@@ -207,6 +219,18 @@ func ToResponseApplySnapshotChunk(res ResponseApplySnapshotChunk) *Response {
 	}
 }
 
+func ToResponseExtendVote(res ResponseExtendVote) *Response {
+	return &Response{
+		Value: &Response_ExtendVote{&res},
+	}
+}
+
+func ToResponseVerifyVoteExtension(res ResponseVerifyVoteExtension) *Response {
+	return &Response{
+		Value: &Response_VerifyVoteExtension{&res},
+  }
+}
+
 func ToResponsePrepareProposal(res ResponsePrepareProposal) *Response {
 	return &Response{
 		Value: &Response_PrepareProposal{&res},

internal/consensus/msgs_test.go

@@ -357,6 +357,11 @@ func TestConsMsgsVectors(t *testing.T) {
 	}
 	pbProposal := proposal.ToProto()
 
+	ext := types.VoteExtension{
+		AppDataToSign:             []byte("signed"),
+		AppDataSelfAuthenticating: []byte("auth"),
+	}
+
 	v := &types.Vote{
 		ValidatorAddress: []byte("add_more_exclamation"),
 		ValidatorIndex:   1,
@@ -365,6 +370,7 @@ func TestConsMsgsVectors(t *testing.T) {
 		Timestamp:        date,
 		Type:             tmproto.PrecommitType,
 		BlockID:          bi,
+		VoteExtension:    ext,
 	}
 	vpb := v.ToProto()
 
@@ -401,7 +407,7 @@ func TestConsMsgsVectors(t *testing.T) {
 			"2a36080110011a3008011204746573741a26080110011a206164645f6d6f72655f6578636c616d6174696f6e5f6d61726b735f636f64652d"},
 		{"Vote", &tmcons.Message{Sum: &tmcons.Message_Vote{
 			Vote: &tmcons.Vote{Vote: vpb}}},
-			"32700a6e0802100122480a206164645f6d6f72655f6578636c616d6174696f6e5f6d61726b735f636f64652d1224080112206164645f6d6f72655f6578636c616d6174696f6e5f6d61726b735f636f64652d2a0608c0b89fdc0532146164645f6d6f72655f6578636c616d6174696f6e3801"},
+			"3280010a7e0802100122480a206164645f6d6f72655f6578636c616d6174696f6e5f6d61726b735f636f64652d1224080112206164645f6d6f72655f6578636c616d6174696f6e5f6d61726b735f636f64652d2a0608c0b89fdc0532146164645f6d6f72655f6578636c616d6174696f6e38014a0e0a067369676e6564120461757468"},
 		{"HasVote", &tmcons.Message{Sum: &tmcons.Message_HasVote{
 			HasVote: &tmcons.HasVote{Height: 1, Round: 1, Type: tmproto.PrevoteType, Index: 1}}},
 			"3a080801100118012001"},

internal/consensus/state.go

@@ -2379,6 +2379,12 @@ func (cs *State) signVote(
 	switch msgType {
 	case tmproto.PrecommitType:
 		timeout = cs.config.TimeoutPrecommit
+		// if the signedMessage type is for a precommit, add VoteExtension
+		ext, err := cs.blockExec.ExtendVote(vote)
+		if err != nil {
+			return nil, err
+		}
+		vote.VoteExtension = ext
 	case tmproto.PrevoteType:
 		timeout = cs.config.TimeoutPrevote
 	default:
@@ -2392,11 +2398,17 @@ func (cs *State) signVote(
 	vote.Signature = v.Signature
 	vote.Timestamp = v.Timestamp
 
+
 	return vote, err
 }
 
 // sign the vote and publish on internalMsgQueue
-func (cs *State) signAddVote(ctx context.Context, msgType tmproto.SignedMsgType, hash []byte, header types.PartSetHeader) *types.Vote {
+func (cs *State) signAddVote(
+  ctx context.Context,
+  msgType tmproto.SignedMsgType,
+  hash []byte,
+  header types.PartSetHeader,
+) *types.Vote {
 	if cs.privValidator == nil { // the node does not have a key
 		return nil
 	}

internal/proxy/app_conn.go

@@ -21,6 +21,8 @@ type AppConnConsensus interface {
 	InitChain(context.Context, types.RequestInitChain) (*types.ResponseInitChain, error)
 
 	PrepareProposal(context.Context, types.RequestPrepareProposal) (*types.ResponsePrepareProposal, error)
+	ExtendVote(context.Context, types.RequestExtendVote) (*types.ResponseExtendVote, error)
+	VerifyVoteExtension(context.Context, types.RequestVerifyVoteExtension) (*types.ResponseVerifyVoteExtension, error)
 	BeginBlock(context.Context, types.RequestBeginBlock) (*types.ResponseBeginBlock, error)
 	DeliverTx(context.Context, types.RequestDeliverTx) (*types.ResponseDeliverTx, error)
 	EndBlock(context.Context, types.RequestEndBlock) (*types.ResponseEndBlock, error)
@@ -96,6 +98,22 @@ func (app *appConnConsensus) PrepareProposal(
 	return app.appConn.PrepareProposal(ctx, req)
 }
 
+func (app *appConnConsensus) ExtendVote(
+	ctx context.Context,
+	req types.RequestExtendVote,
+) (*types.ResponseExtendVote, error) {
+	defer addTimeSample(app.metrics.MethodTiming.With("method", "extend_vote", "type", "sync"))()
+	return app.appConn.ExtendVote(ctx, req)
+}
+
+func (app *appConnConsensus) VerifyVoteExtension(
+	ctx context.Context,
+	req types.RequestVerifyVoteExtension,
+) (*types.ResponseVerifyVoteExtension, error) {
+	defer addTimeSample(app.metrics.MethodTiming.With("method", "verify_vote_extension", "type", "sync"))()
+	return app.appConn.VerifyVoteExtension(ctx, req)
+}
+
 func (app *appConnConsensus) BeginBlock(
 	ctx context.Context,
 	req types.RequestBeginBlock,

internal/proxy/mocks/app_conn_consensus.go

@@ -123,6 +123,29 @@ func (_m *AppConnConsensus) Error() error {
 	return r0
 }
 
+// ExtendVote provides a mock function with given fields: _a0, _a1
+func (_m *AppConnConsensus) ExtendVote(_a0 context.Context, _a1 types.RequestExtendVote) (*types.ResponseExtendVote, error) {
+	ret := _m.Called(_a0, _a1)
+
+	var r0 *types.ResponseExtendVote
+	if rf, ok := ret.Get(0).(func(context.Context, types.RequestExtendVote) *types.ResponseExtendVote); ok {
+		r0 = rf(_a0, _a1)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*types.ResponseExtendVote)
+		}
+	}
+
+	var r1 error
+	if rf, ok := ret.Get(1).(func(context.Context, types.RequestExtendVote) error); ok {
+		r1 = rf(_a0, _a1)
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}
+
 // InitChain provides a mock function with given fields: _a0, _a1
 func (_m *AppConnConsensus) InitChain(_a0 context.Context, _a1 types.RequestInitChain) (*types.ResponseInitChain, error) {
 	ret := _m.Called(_a0, _a1)
@@ -173,3 +196,26 @@ func (_m *AppConnConsensus) PrepareProposal(_a0 context.Context, _a1 types.Reque
 func (_m *AppConnConsensus) SetResponseCallback(_a0 abciclient.Callback) {
 	_m.Called(_a0)
 }
+
+// VerifyVoteExtension provides a mock function with given fields: _a0, _a1
+func (_m *AppConnConsensus) VerifyVoteExtension(_a0 context.Context, _a1 types.RequestVerifyVoteExtension) (*types.ResponseVerifyVoteExtension, error) {
+	ret := _m.Called(_a0, _a1)
+
+	var r0 *types.ResponseVerifyVoteExtension
+	if rf, ok := ret.Get(0).(func(context.Context, types.RequestVerifyVoteExtension) *types.ResponseVerifyVoteExtension); ok {
+		r0 = rf(_a0, _a1)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*types.ResponseVerifyVoteExtension)
+		}
+	}
+
+	var r1 error
+	if rf, ok := ret.Get(1).(func(context.Context, types.RequestVerifyVoteExtension) error); ok {
+		r1 = rf(_a0, _a1)
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}

internal/state/execution.go

@@ -260,6 +260,20 @@ func (blockExec *BlockExecutor) ApplyBlock(
 	return state, nil
 }
 
+func (blockExec *BlockExecutor) ExtendVote(vote *types.Vote) (types.VoteExtension, error) {
+  ctx := context.TODO()
+  req := abci.RequestExtendVote{
+    Vote: vote.ToProto(),
+  }
+
+  resp, err := blockExec.proxyApp.ExtendVote(ctx, req)
+  if err != nil {
+    return types.VoteExtension{}, err
+  }
+
+  return types.VoteExtensionFromProto(resp.VoteExtension), nil
+}
+
 // Commit locks the mempool, runs the ABCI Commit message, and updates the
 // mempool.
 // It returns the result of calling abci.Commit (the AppHash) and the height to retain (if any).
@@ -497,7 +511,7 @@ func updateState(
 
 	nextVersion := state.Version
 
-	// NOTE: the AppHash has not been populated.
+	// NOTE: the AppHash and the VoteExtension has not been populated.
 	// It will be filled on state.Save.
 	return State{
 		Version:                          nextVersion,

internal/state/execution_test.go

@@ -90,11 +90,15 @@ func TestBeginBlockValidators(t *testing.T) {
 		commitSig0 = types.NewCommitSigForBlock(
 			[]byte("Signature1"),
 			state.Validators.Validators[0].Address,
-			now)
+			now,
+      types.VoteExtensionToSign{},
+    )
 		commitSig1 = types.NewCommitSigForBlock(
 			[]byte("Signature2"),
 			state.Validators.Validators[1].Address,
-			now)
+			now,
+      types.VoteExtensionToSign{},
+    )
 		absentSig = types.NewCommitSigAbsent()
 	)
 

privval/msgs_test.go

@@ -35,6 +35,10 @@ func exampleVote() *types.Vote {
 		},
 		ValidatorAddress: crypto.AddressHash([]byte("validator_address")),
 		ValidatorIndex:   56789,
+		VoteExtension: types.VoteExtension {
+			AppDataToSign: []byte("app_data_signed"),
+			AppDataSelfAuthenticating: []byte("app_data_self_authenticating"),
+		},
 	}
 }
 
@@ -83,8 +87,8 @@ func TestPrivvalVectors(t *testing.T) {
 		{"pubKey request", &privproto.PubKeyRequest{}, "0a00"},
 		{"pubKey response", &privproto.PubKeyResponse{PubKey: ppk, Error: nil}, "12240a220a20556a436f1218d30942efe798420f51dc9b6a311b929c578257457d05c5fcf230"},
 		{"pubKey response with error", &privproto.PubKeyResponse{PubKey: cryptoproto.PublicKey{}, Error: remoteError}, "12140a0012100801120c697427732061206572726f72"},
-		{"Vote Request", &privproto.SignVoteRequest{Vote: votepb}, "1a760a74080110031802224a0a208b01023386c371778ecb6368573e539afc3cc860ec3a2f614e54fe5652f4fc80122608c0843d122072db3d959635dff1bb567bedaa70573392c5159666a3f8caf11e413aac52207a2a0608f49a8ded0532146af1f4111082efb388211bc72c55bcd61e9ac3d538d5bb03"},
-		{"Vote Response", &privproto.SignedVoteResponse{Vote: *votepb, Error: nil}, "22760a74080110031802224a0a208b01023386c371778ecb6368573e539afc3cc860ec3a2f614e54fe5652f4fc80122608c0843d122072db3d959635dff1bb567bedaa70573392c5159666a3f8caf11e413aac52207a2a0608f49a8ded0532146af1f4111082efb388211bc72c55bcd61e9ac3d538d5bb03"},
+		{"Vote Request", &privproto.SignVoteRequest{Vote: votepb}, "1aa8010aa501080110031802224a0a208b01023386c371778ecb6368573e539afc3cc860ec3a2f614e54fe5652f4fc80122608c0843d122072db3d959635dff1bb567bedaa70573392c5159666a3f8caf11e413aac52207a2a0608f49a8ded0532146af1f4111082efb388211bc72c55bcd61e9ac3d538d5bb034a2f0a0f6170705f646174615f7369676e6564121c6170705f646174615f73656c665f61757468656e7469636174696e67"},
+		{"Vote Response", &privproto.SignedVoteResponse{Vote: *votepb, Error: nil}, "22a8010aa501080110031802224a0a208b01023386c371778ecb6368573e539afc3cc860ec3a2f614e54fe5652f4fc80122608c0843d122072db3d959635dff1bb567bedaa70573392c5159666a3f8caf11e413aac52207a2a0608f49a8ded0532146af1f4111082efb388211bc72c55bcd61e9ac3d538d5bb034a2f0a0f6170705f646174615f7369676e6564121c6170705f646174615f73656c665f61757468656e7469636174696e67"},
 		{"Vote Response with error", &privproto.SignedVoteResponse{Vote: tmproto.Vote{}, Error: remoteError}, "22250a11220212002a0b088092b8c398feffffff0112100801120c697427732061206572726f72"},
 		{"Proposal Request", &privproto.SignProposalRequest{Proposal: proposalpb}, "2a700a6e08011003180220022a4a0a208b01023386c371778ecb6368573e539afc3cc860ec3a2f614e54fe5652f4fc80122608c0843d122072db3d959635dff1bb567bedaa70573392c5159666a3f8caf11e413aac52207a320608f49a8ded053a10697427732061207369676e6174757265"},
 		{"Proposal Response", &privproto.SignedProposalResponse{Proposal: *proposalpb, Error: nil}, "32700a6e08011003180220022a4a0a208b01023386c371778ecb6368573e539afc3cc860ec3a2f614e54fe5652f4fc80122608c0843d122072db3d959635dff1bb567bedaa70573392c5159666a3f8caf11e413aac52207a320608f49a8ded053a10697427732061207369676e6174757265"},

proto/tendermint/types/canonical.pb.go

@@ -225,12 +225,13 @@ func (m *CanonicalProposal) GetChainID() string {
 }
 
 type CanonicalVote struct {
-	Type      SignedMsgType     `protobuf:"varint,1,opt,name=type,proto3,enum=tendermint.types.SignedMsgType" json:"type,omitempty"`
-	Height    int64             `protobuf:"fixed64,2,opt,name=height,proto3" json:"height,omitempty"`
-	Round     int64             `protobuf:"fixed64,3,opt,name=round,proto3" json:"round,omitempty"`
-	BlockID   *CanonicalBlockID `protobuf:"bytes,4,opt,name=block_id,json=blockId,proto3" json:"block_id,omitempty"`
-	Timestamp time.Time         `protobuf:"bytes,5,opt,name=timestamp,proto3,stdtime" json:"timestamp"`
-	ChainID   string            `protobuf:"bytes,6,opt,name=chain_id,json=chainId,proto3" json:"chain_id,omitempty"`
+	Type          SignedMsgType        `protobuf:"varint,1,opt,name=type,proto3,enum=tendermint.types.SignedMsgType" json:"type,omitempty"`
+	Height        int64                `protobuf:"fixed64,2,opt,name=height,proto3" json:"height,omitempty"`
+	Round         int64                `protobuf:"fixed64,3,opt,name=round,proto3" json:"round,omitempty"`
+	BlockID       *CanonicalBlockID    `protobuf:"bytes,4,opt,name=block_id,json=blockId,proto3" json:"block_id,omitempty"`
+	Timestamp     time.Time            `protobuf:"bytes,5,opt,name=timestamp,proto3,stdtime" json:"timestamp"`
+	ChainID       string               `protobuf:"bytes,6,opt,name=chain_id,json=chainId,proto3" json:"chain_id,omitempty"`
+	VoteExtension *VoteExtensionToSign `protobuf:"bytes,7,opt,name=vote_extension,json=voteExtension,proto3" json:"vote_extension,omitempty"`
 }
 
 func (m *CanonicalVote) Reset()         { *m = CanonicalVote{} }
@@ -308,6 +309,13 @@ func (m *CanonicalVote) GetChainID() string {
 	return ""
 }
 
+func (m *CanonicalVote) GetVoteExtension() *VoteExtensionToSign {
+	if m != nil {
+		return m.VoteExtension
+	}
+	return nil
+}
+
 func init() {
 	proto.RegisterType((*CanonicalBlockID)(nil), "tendermint.types.CanonicalBlockID")
 	proto.RegisterType((*CanonicalPartSetHeader)(nil), "tendermint.types.CanonicalPartSetHeader")
@@ -318,38 +326,40 @@ func init() {
 func init() { proto.RegisterFile("tendermint/types/canonical.proto", fileDescriptor_8d1a1a84ff7267ed) }
 
 var fileDescriptor_8d1a1a84ff7267ed = []byte{
-	// 487 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xbc, 0x53, 0x3d, 0x6f, 0xd3, 0x40,
-	0x18, 0xce, 0xa5, 0x4e, 0xe2, 0x5c, 0x1b, 0x08, 0xa7, 0xaa, 0xb2, 0x22, 0x64, 0x5b, 0x1e, 0x90,
-	0x59, 0x6c, 0xa9, 0x1d, 0xd8, 0x5d, 0x06, 0x82, 0x40, 0x94, 0x6b, 0xd5, 0x81, 0x25, 0xba, 0xd8,
-	0x87, 0x6d, 0xe1, 0xf8, 0x4e, 0xf6, 0x65, 0xe8, 0xc2, 0x6f, 0xe8, 0xef, 0xe0, 0x97, 0x74, 0xec,
-	0x08, 0x4b, 0x40, 0xce, 0x1f, 0x41, 0x77, 0x4e, 0xec, 0xa8, 0x01, 0x16, 0x10, 0xcb, 0xe9, 0xfd,
-	0x78, 0xee, 0x79, 0x1f, 0x3d, 0xaf, 0x5e, 0x68, 0x0b, 0x9a, 0x47, 0xb4, 0x58, 0xa4, 0xb9, 0xf0,
-	0xc5, 0x0d, 0xa7, 0xa5, 0x1f, 0x92, 0x9c, 0xe5, 0x69, 0x48, 0x32, 0x8f, 0x17, 0x4c, 0x30, 0x34,
-	0x6e, 0x11, 0x9e, 0x42, 0x4c, 0x8e, 0x63, 0x16, 0x33, 0xd5, 0xf4, 0x65, 0x54, 0xe3, 0x26, 0x4f,
-	0xf7, 0x98, 0xd4, 0xbb, 0xe9, 0x5a, 0x31, 0x63, 0x71, 0x46, 0x7d, 0x95, 0xcd, 0x97, 0x1f, 0x7d,
-	0x91, 0x2e, 0x68, 0x29, 0xc8, 0x82, 0xd7, 0x00, 0xe7, 0x33, 0x1c, 0x9f, 0x6f, 0x27, 0x07, 0x19,
-	0x0b, 0x3f, 0x4d, 0x5f, 0x22, 0x04, 0xb5, 0x84, 0x94, 0x89, 0x01, 0x6c, 0xe0, 0x1e, 0x61, 0x15,
-	0xa3, 0x6b, 0xf8, 0x98, 0x93, 0x42, 0xcc, 0x4a, 0x2a, 0x66, 0x09, 0x25, 0x11, 0x2d, 0x8c, 0xae,
-	0x0d, 0xdc, 0xc3, 0x53, 0xd7, 0x7b, 0x28, 0xd4, 0x6b, 0x08, 0x2f, 0x48, 0x21, 0x2e, 0xa9, 0x78,
-	0xa5, 0xf0, 0x81, 0x76, 0xb7, 0xb2, 0x3a, 0x78, 0xc4, 0x77, 0x8b, 0x4e, 0x00, 0x4f, 0x7e, 0x0d,
-	0x47, 0xc7, 0xb0, 0x27, 0x98, 0x20, 0x99, 0x92, 0x31, 0xc2, 0x75, 0xd2, 0x68, 0xeb, 0xb6, 0xda,
-	0x9c, 0x6f, 0x5d, 0xf8, 0xa4, 0x25, 0x29, 0x18, 0x67, 0x25, 0xc9, 0xd0, 0x19, 0xd4, 0xa4, 0x1c,
-	0xf5, 0xfd, 0xd1, 0xa9, 0xb5, 0x2f, 0xf3, 0x32, 0x8d, 0x73, 0x1a, 0xbd, 0x2d, 0xe3, 0xab, 0x1b,
-	0x4e, 0xb1, 0x02, 0xa3, 0x13, 0xd8, 0x4f, 0x68, 0x1a, 0x27, 0x42, 0x0d, 0x18, 0xe3, 0x4d, 0x26,
-	0xc5, 0x14, 0x6c, 0x99, 0x47, 0xc6, 0x81, 0x2a, 0xd7, 0x09, 0x7a, 0x0e, 0x87, 0x9c, 0x65, 0xb3,
-	0xba, 0xa3, 0xd9, 0xc0, 0x3d, 0x08, 0x8e, 0xaa, 0x95, 0xa5, 0x5f, 0xbc, 0x7b, 0x83, 0x65, 0x0d,
-	0xeb, 0x9c, 0x65, 0x2a, 0x42, 0xaf, 0xa1, 0x3e, 0x97, 0xf6, 0xce, 0xd2, 0xc8, 0xe8, 0x29, 0xe3,
-	0x9c, 0x3f, 0x18, 0xb7, 0xd9, 0x44, 0x70, 0x58, 0xad, 0xac, 0xc1, 0x26, 0xc1, 0x03, 0x45, 0x30,
-	0x8d, 0x50, 0x00, 0x87, 0xcd, 0x1a, 0x8d, 0xbe, 0x22, 0x9b, 0x78, 0xf5, 0xa2, 0xbd, 0xed, 0xa2,
-	0xbd, 0xab, 0x2d, 0x22, 0xd0, 0xa5, 0xef, 0xb7, 0xdf, 0x2d, 0x80, 0xdb, 0x6f, 0xe8, 0x19, 0xd4,
-	0xc3, 0x84, 0xa4, 0xb9, 0xd4, 0x33, 0xb0, 0x81, 0x3b, 0xac, 0x67, 0x9d, 0xcb, 0x9a, 0x9c, 0xa5,
-	0x9a, 0xd3, 0xc8, 0xf9, 0xd2, 0x85, 0xa3, 0x46, 0xd6, 0x35, 0x13, 0xf4, 0x7f, 0xf8, 0xba, 0x6b,
-	0x96, 0xf6, 0x2f, 0xcd, 0xea, 0xfd, 0xbd, 0x59, 0xfd, 0xdf, 0x9b, 0x15, 0xbc, 0xbf, 0xab, 0x4c,
-	0x70, 0x5f, 0x99, 0xe0, 0x47, 0x65, 0x82, 0xdb, 0xb5, 0xd9, 0xb9, 0x5f, 0x9b, 0x9d, 0xaf, 0x6b,
-	0xb3, 0xf3, 0xe1, 0x45, 0x9c, 0x8a, 0x64, 0x39, 0xf7, 0x42, 0xb6, 0xf0, 0x77, 0x0f, 0xb6, 0x0d,
-	0xeb, 0xc3, 0x7e, 0x78, 0xcc, 0xf3, 0xbe, 0xaa, 0x9f, 0xfd, 0x0c, 0x00, 0x00, 0xff, 0xff, 0x6d,
-	0xdd, 0x12, 0x5d, 0x31, 0x04, 0x00, 0x00,
+	// 522 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xbc, 0x94, 0x3f, 0x6f, 0xd3, 0x40,
+	0x18, 0xc6, 0xe3, 0xd4, 0x49, 0x9c, 0x4b, 0x53, 0xc2, 0xa9, 0xaa, 0xac, 0x08, 0xd9, 0x96, 0x25,
+	0x90, 0x59, 0x6c, 0x29, 0x1d, 0xd8, 0x5d, 0x90, 0x08, 0x2a, 0xa2, 0x5c, 0xa3, 0x0e, 0x2c, 0xd6,
+	0xc5, 0x3e, 0x6c, 0x0b, 0xc7, 0x67, 0xd9, 0x97, 0x8a, 0x2e, 0x7c, 0x86, 0x7e, 0xac, 0x8e, 0x1d,
+	0x61, 0x09, 0xc8, 0xf9, 0x12, 0x8c, 0xe8, 0xce, 0x49, 0x1c, 0x25, 0xc0, 0x02, 0xea, 0x12, 0xbd,
+	0x7f, 0x1e, 0xbf, 0xef, 0xa3, 0xdf, 0xab, 0x1c, 0x30, 0x18, 0x49, 0x03, 0x92, 0xcf, 0xe2, 0x94,
+	0x39, 0xec, 0x26, 0x23, 0x85, 0xe3, 0xe3, 0x94, 0xa6, 0xb1, 0x8f, 0x13, 0x3b, 0xcb, 0x29, 0xa3,
+	0x70, 0x50, 0x2b, 0x6c, 0xa1, 0x18, 0x1e, 0x87, 0x34, 0xa4, 0xa2, 0xe9, 0xf0, 0xa8, 0xd2, 0x0d,
+	0x9f, 0xec, 0x4d, 0x12, 0xbf, 0xab, 0xae, 0x1e, 0x52, 0x1a, 0x26, 0xc4, 0x11, 0xd9, 0x74, 0xfe,
+	0xd1, 0x61, 0xf1, 0x8c, 0x14, 0x0c, 0xcf, 0xb2, 0x4a, 0x60, 0x7e, 0x01, 0x83, 0xb3, 0xf5, 0x66,
+	0x37, 0xa1, 0xfe, 0xa7, 0xf1, 0x4b, 0x08, 0x81, 0x1c, 0xe1, 0x22, 0x52, 0x25, 0x43, 0xb2, 0x0e,
+	0x91, 0x88, 0xe1, 0x15, 0x78, 0x94, 0xe1, 0x9c, 0x79, 0x05, 0x61, 0x5e, 0x44, 0x70, 0x40, 0x72,
+	0xb5, 0x69, 0x48, 0x56, 0x6f, 0x64, 0xd9, 0xbb, 0x46, 0xed, 0xcd, 0xc0, 0x0b, 0x9c, 0xb3, 0x4b,
+	0xc2, 0x5e, 0x0b, 0xbd, 0x2b, 0xdf, 0x2d, 0xf4, 0x06, 0xea, 0x67, 0xdb, 0x45, 0xd3, 0x05, 0x27,
+	0xbf, 0x97, 0xc3, 0x63, 0xd0, 0x62, 0x94, 0xe1, 0x44, 0xd8, 0xe8, 0xa3, 0x2a, 0xd9, 0x78, 0x6b,
+	0xd6, 0xde, 0xcc, 0x6f, 0x4d, 0xf0, 0xb8, 0x1e, 0x92, 0xd3, 0x8c, 0x16, 0x38, 0x81, 0xa7, 0x40,
+	0xe6, 0x76, 0xc4, 0xe7, 0x47, 0x23, 0x7d, 0xdf, 0xe6, 0x65, 0x1c, 0xa6, 0x24, 0x78, 0x5b, 0x84,
+	0x93, 0x9b, 0x8c, 0x20, 0x21, 0x86, 0x27, 0xa0, 0x1d, 0x91, 0x38, 0x8c, 0x98, 0x58, 0x30, 0x40,
+	0xab, 0x8c, 0x9b, 0xc9, 0xe9, 0x3c, 0x0d, 0xd4, 0x03, 0x51, 0xae, 0x12, 0xf8, 0x1c, 0x74, 0x33,
+	0x9a, 0x78, 0x55, 0x47, 0x36, 0x24, 0xeb, 0xc0, 0x3d, 0x2c, 0x17, 0xba, 0x72, 0xf1, 0xee, 0x1c,
+	0xf1, 0x1a, 0x52, 0x32, 0x9a, 0x88, 0x08, 0xbe, 0x01, 0xca, 0x94, 0xe3, 0xf5, 0xe2, 0x40, 0x6d,
+	0x09, 0x70, 0xe6, 0x5f, 0xc0, 0xad, 0x2e, 0xe1, 0xf6, 0xca, 0x85, 0xde, 0x59, 0x25, 0xa8, 0x23,
+	0x06, 0x8c, 0x03, 0xe8, 0x82, 0xee, 0xe6, 0x8c, 0x6a, 0x5b, 0x0c, 0x1b, 0xda, 0xd5, 0xa1, 0xed,
+	0xf5, 0xa1, 0xed, 0xc9, 0x5a, 0xe1, 0x2a, 0x9c, 0xfb, 0xed, 0x77, 0x5d, 0x42, 0xf5, 0x67, 0xf0,
+	0x19, 0x50, 0xfc, 0x08, 0xc7, 0x29, 0xf7, 0xd3, 0x31, 0x24, 0xab, 0x5b, 0xed, 0x3a, 0xe3, 0x35,
+	0xbe, 0x4b, 0x34, 0xc7, 0x81, 0xf9, 0xb3, 0x09, 0xfa, 0x1b, 0x5b, 0x57, 0x94, 0x91, 0x87, 0xe0,
+	0xba, 0x0d, 0x4b, 0xfe, 0x9f, 0xb0, 0x5a, 0xff, 0x0e, 0xab, 0xfd, 0x67, 0x58, 0xf0, 0x1c, 0x1c,
+	0x5d, 0x53, 0x46, 0x3c, 0xf2, 0x99, 0x91, 0xb4, 0x88, 0x69, 0x2a, 0xd0, 0xf6, 0x46, 0x4f, 0xf7,
+	0xdd, 0x73, 0x94, 0xaf, 0xd6, 0xb2, 0x09, 0xe5, 0xcc, 0x50, 0xff, 0x7a, 0xbb, 0xe8, 0xbe, 0xbf,
+	0x2b, 0x35, 0xe9, 0xbe, 0xd4, 0xa4, 0x1f, 0xa5, 0x26, 0xdd, 0x2e, 0xb5, 0xc6, 0xfd, 0x52, 0x6b,
+	0x7c, 0x5d, 0x6a, 0x8d, 0x0f, 0x2f, 0xc2, 0x98, 0x45, 0xf3, 0xa9, 0xed, 0xd3, 0x99, 0xb3, 0xfd,
+	0xf7, 0xaf, 0xc3, 0xea, 0x99, 0xd8, 0x7d, 0x1a, 0xa6, 0x6d, 0x51, 0x3f, 0xfd, 0x15, 0x00, 0x00,
+	0xff, 0xff, 0x4e, 0x61, 0xcb, 0xc4, 0x7f, 0x04, 0x00, 0x00,
 }
 
 func (m *CanonicalBlockID) Marshal() (dAtA []byte, err error) {
@@ -519,6 +529,18 @@ func (m *CanonicalVote) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	_ = i
 	var l int
 	_ = l
+	if m.VoteExtension != nil {
+		{
+			size, err := m.VoteExtension.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintCanonical(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x3a
+	}
 	if len(m.ChainID) > 0 {
 		i -= len(m.ChainID)
 		copy(dAtA[i:], m.ChainID)
@@ -526,12 +548,12 @@ func (m *CanonicalVote) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		i--
 		dAtA[i] = 0x32
 	}
-	n4, err4 := github_com_gogo_protobuf_types.StdTimeMarshalTo(m.Timestamp, dAtA[i-github_com_gogo_protobuf_types.SizeOfStdTime(m.Timestamp):])
-	if err4 != nil {
-		return 0, err4
+	n5, err5 := github_com_gogo_protobuf_types.StdTimeMarshalTo(m.Timestamp, dAtA[i-github_com_gogo_protobuf_types.SizeOfStdTime(m.Timestamp):])
+	if err5 != nil {
+		return 0, err5
 	}
-	i -= n4
-	i = encodeVarintCanonical(dAtA, i, uint64(n4))
+	i -= n5
+	i = encodeVarintCanonical(dAtA, i, uint64(n5))
 	i--
 	dAtA[i] = 0x2a
 	if m.BlockID != nil {
@@ -664,6 +686,10 @@ func (m *CanonicalVote) Size() (n int) {
 	if l > 0 {
 		n += 1 + l + sovCanonical(uint64(l))
 	}
+	if m.VoteExtension != nil {
+		l = m.VoteExtension.Size()
+		n += 1 + l + sovCanonical(uint64(l))
+	}
 	return n
 }
 
@@ -1271,6 +1297,42 @@ func (m *CanonicalVote) Unmarshal(dAtA []byte) error {
 			}
 			m.ChainID = string(dAtA[iNdEx:postIndex])
 			iNdEx = postIndex
+		case 7:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field VoteExtension", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowCanonical
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthCanonical
+			}
+			postIndex := iNdEx + msglen
+			if postIndex < 0 {
+				return ErrInvalidLengthCanonical
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			if m.VoteExtension == nil {
+				m.VoteExtension = &VoteExtensionToSign{}
+			}
+			if err := m.VoteExtension.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
 		default:
 			iNdEx = preIndex
 			skippy, err := skipCanonical(dAtA[iNdEx:])

proto/tendermint/types/canonical.proto

@@ -34,4 +34,5 @@ message CanonicalVote {
   CanonicalBlockID          block_id  = 4 [(gogoproto.customname) = "BlockID"];
   google.protobuf.Timestamp timestamp = 5 [(gogoproto.nullable) = false, (gogoproto.stdtime) = true];
   string                    chain_id  = 6 [(gogoproto.customname) = "ChainID"];
+  VoteExtensionToSign       vote_extension = 7;
 }

proto/tendermint/types/types.pb.go

@@ -466,14 +466,15 @@ func (m *Data) GetTxs() [][]byte {
 // Vote represents a prevote, precommit, or commit vote from validators for
 // consensus.
 type Vote struct {
-	Type             SignedMsgType `protobuf:"varint,1,opt,name=type,proto3,enum=tendermint.types.SignedMsgType" json:"type,omitempty"`
-	Height           int64         `protobuf:"varint,2,opt,name=height,proto3" json:"height,omitempty"`
-	Round            int32         `protobuf:"varint,3,opt,name=round,proto3" json:"round,omitempty"`
-	BlockID          BlockID       `protobuf:"bytes,4,opt,name=block_id,json=blockId,proto3" json:"block_id"`
-	Timestamp        time.Time     `protobuf:"bytes,5,opt,name=timestamp,proto3,stdtime" json:"timestamp"`
-	ValidatorAddress []byte        `protobuf:"bytes,6,opt,name=validator_address,json=validatorAddress,proto3" json:"validator_address,omitempty"`
-	ValidatorIndex   int32         `protobuf:"varint,7,opt,name=validator_index,json=validatorIndex,proto3" json:"validator_index,omitempty"`
-	Signature        []byte        `protobuf:"bytes,8,opt,name=signature,proto3" json:"signature,omitempty"`
+	Type             SignedMsgType  `protobuf:"varint,1,opt,name=type,proto3,enum=tendermint.types.SignedMsgType" json:"type,omitempty"`
+	Height           int64          `protobuf:"varint,2,opt,name=height,proto3" json:"height,omitempty"`
+	Round            int32          `protobuf:"varint,3,opt,name=round,proto3" json:"round,omitempty"`
+	BlockID          BlockID        `protobuf:"bytes,4,opt,name=block_id,json=blockId,proto3" json:"block_id"`
+	Timestamp        time.Time      `protobuf:"bytes,5,opt,name=timestamp,proto3,stdtime" json:"timestamp"`
+	ValidatorAddress []byte         `protobuf:"bytes,6,opt,name=validator_address,json=validatorAddress,proto3" json:"validator_address,omitempty"`
+	ValidatorIndex   int32          `protobuf:"varint,7,opt,name=validator_index,json=validatorIndex,proto3" json:"validator_index,omitempty"`
+	Signature        []byte         `protobuf:"bytes,8,opt,name=signature,proto3" json:"signature,omitempty"`
+	VoteExtension    *VoteExtension `protobuf:"bytes,9,opt,name=vote_extension,json=voteExtension,proto3" json:"vote_extension,omitempty"`
 }
 
 func (m *Vote) Reset()         { *m = Vote{} }
@@ -565,6 +566,112 @@ func (m *Vote) GetSignature() []byte {
 	return nil
 }
 
+func (m *Vote) GetVoteExtension() *VoteExtension {
+	if m != nil {
+		return m.VoteExtension
+	}
+	return nil
+}
+
+// VoteExtension is app-defined additional information to the validator votes.
+type VoteExtension struct {
+	AppDataToSign             []byte `protobuf:"bytes,1,opt,name=app_data_to_sign,json=appDataToSign,proto3" json:"app_data_to_sign,omitempty"`
+	AppDataSelfAuthenticating []byte `protobuf:"bytes,2,opt,name=app_data_self_authenticating,json=appDataSelfAuthenticating,proto3" json:"app_data_self_authenticating,omitempty"`
+}
+
+func (m *VoteExtension) Reset()         { *m = VoteExtension{} }
+func (m *VoteExtension) String() string { return proto.CompactTextString(m) }
+func (*VoteExtension) ProtoMessage()    {}
+func (*VoteExtension) Descriptor() ([]byte, []int) {
+	return fileDescriptor_d3a6e55e2345de56, []int{6}
+}
+func (m *VoteExtension) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *VoteExtension) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_VoteExtension.Marshal(b, m, deterministic)
+	} else {
+		b = b[:cap(b)]
+		n, err := m.MarshalToSizedBuffer(b)
+		if err != nil {
+			return nil, err
+		}
+		return b[:n], nil
+	}
+}
+func (m *VoteExtension) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_VoteExtension.Merge(m, src)
+}
+func (m *VoteExtension) XXX_Size() int {
+	return m.Size()
+}
+func (m *VoteExtension) XXX_DiscardUnknown() {
+	xxx_messageInfo_VoteExtension.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_VoteExtension proto.InternalMessageInfo
+
+func (m *VoteExtension) GetAppDataToSign() []byte {
+	if m != nil {
+		return m.AppDataToSign
+	}
+	return nil
+}
+
+func (m *VoteExtension) GetAppDataSelfAuthenticating() []byte {
+	if m != nil {
+		return m.AppDataSelfAuthenticating
+	}
+	return nil
+}
+
+// VoteExtensionToSign is a subset of VoteExtension that is signed by the validators private key.
+// VoteExtensionToSign is extracted from an existing VoteExtension.
+type VoteExtensionToSign struct {
+	AppDataToSign []byte `protobuf:"bytes,1,opt,name=app_data_to_sign,json=appDataToSign,proto3" json:"app_data_to_sign,omitempty"`
+}
+
+func (m *VoteExtensionToSign) Reset()         { *m = VoteExtensionToSign{} }
+func (m *VoteExtensionToSign) String() string { return proto.CompactTextString(m) }
+func (*VoteExtensionToSign) ProtoMessage()    {}
+func (*VoteExtensionToSign) Descriptor() ([]byte, []int) {
+	return fileDescriptor_d3a6e55e2345de56, []int{7}
+}
+func (m *VoteExtensionToSign) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *VoteExtensionToSign) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_VoteExtensionToSign.Marshal(b, m, deterministic)
+	} else {
+		b = b[:cap(b)]
+		n, err := m.MarshalToSizedBuffer(b)
+		if err != nil {
+			return nil, err
+		}
+		return b[:n], nil
+	}
+}
+func (m *VoteExtensionToSign) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_VoteExtensionToSign.Merge(m, src)
+}
+func (m *VoteExtensionToSign) XXX_Size() int {
+	return m.Size()
+}
+func (m *VoteExtensionToSign) XXX_DiscardUnknown() {
+	xxx_messageInfo_VoteExtensionToSign.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_VoteExtensionToSign proto.InternalMessageInfo
+
+func (m *VoteExtensionToSign) GetAppDataToSign() []byte {
+	if m != nil {
+		return m.AppDataToSign
+	}
+	return nil
+}
+
 // Commit contains the evidence that a block was committed by a set of
 // validators.
 type Commit struct {
@@ -578,7 +685,7 @@ func (m *Commit) Reset()         { *m = Commit{} }
 func (m *Commit) String() string { return proto.CompactTextString(m) }
 func (*Commit) ProtoMessage()    {}
 func (*Commit) Descriptor() ([]byte, []int) {
-	return fileDescriptor_d3a6e55e2345de56, []int{6}
+	return fileDescriptor_d3a6e55e2345de56, []int{8}
 }
 func (m *Commit) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -637,17 +744,18 @@ func (m *Commit) GetSignatures() []CommitSig {
 
 // CommitSig is a part of the Vote included in a Commit.
 type CommitSig struct {
-	BlockIdFlag      BlockIDFlag `protobuf:"varint,1,opt,name=block_id_flag,json=blockIdFlag,proto3,enum=tendermint.types.BlockIDFlag" json:"block_id_flag,omitempty"`
-	ValidatorAddress []byte      `protobuf:"bytes,2,opt,name=validator_address,json=validatorAddress,proto3" json:"validator_address,omitempty"`
-	Timestamp        time.Time   `protobuf:"bytes,3,opt,name=timestamp,proto3,stdtime" json:"timestamp"`
-	Signature        []byte      `protobuf:"bytes,4,opt,name=signature,proto3" json:"signature,omitempty"`
+	BlockIdFlag      BlockIDFlag          `protobuf:"varint,1,opt,name=block_id_flag,json=blockIdFlag,proto3,enum=tendermint.types.BlockIDFlag" json:"block_id_flag,omitempty"`
+	ValidatorAddress []byte               `protobuf:"bytes,2,opt,name=validator_address,json=validatorAddress,proto3" json:"validator_address,omitempty"`
+	Timestamp        time.Time            `protobuf:"bytes,3,opt,name=timestamp,proto3,stdtime" json:"timestamp"`
+	Signature        []byte               `protobuf:"bytes,4,opt,name=signature,proto3" json:"signature,omitempty"`
+	VoteExtension    *VoteExtensionToSign `protobuf:"bytes,5,opt,name=vote_extension,json=voteExtension,proto3" json:"vote_extension,omitempty"`
 }
 
 func (m *CommitSig) Reset()         { *m = CommitSig{} }
 func (m *CommitSig) String() string { return proto.CompactTextString(m) }
 func (*CommitSig) ProtoMessage()    {}
 func (*CommitSig) Descriptor() ([]byte, []int) {
-	return fileDescriptor_d3a6e55e2345de56, []int{7}
+	return fileDescriptor_d3a6e55e2345de56, []int{9}
 }
 func (m *CommitSig) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -704,6 +812,13 @@ func (m *CommitSig) GetSignature() []byte {
 	return nil
 }
 
+func (m *CommitSig) GetVoteExtension() *VoteExtensionToSign {
+	if m != nil {
+		return m.VoteExtension
+	}
+	return nil
+}
+
 type Proposal struct {
 	Type      SignedMsgType `protobuf:"varint,1,opt,name=type,proto3,enum=tendermint.types.SignedMsgType" json:"type,omitempty"`
 	Height    int64         `protobuf:"varint,2,opt,name=height,proto3" json:"height,omitempty"`
@@ -718,7 +833,7 @@ func (m *Proposal) Reset()         { *m = Proposal{} }
 func (m *Proposal) String() string { return proto.CompactTextString(m) }
 func (*Proposal) ProtoMessage()    {}
 func (*Proposal) Descriptor() ([]byte, []int) {
-	return fileDescriptor_d3a6e55e2345de56, []int{8}
+	return fileDescriptor_d3a6e55e2345de56, []int{10}
 }
 func (m *Proposal) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -805,7 +920,7 @@ func (m *SignedHeader) Reset()         { *m = SignedHeader{} }
 func (m *SignedHeader) String() string { return proto.CompactTextString(m) }
 func (*SignedHeader) ProtoMessage()    {}
 func (*SignedHeader) Descriptor() ([]byte, []int) {
-	return fileDescriptor_d3a6e55e2345de56, []int{9}
+	return fileDescriptor_d3a6e55e2345de56, []int{11}
 }
 func (m *SignedHeader) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -857,7 +972,7 @@ func (m *LightBlock) Reset()         { *m = LightBlock{} }
 func (m *LightBlock) String() string { return proto.CompactTextString(m) }
 func (*LightBlock) ProtoMessage()    {}
 func (*LightBlock) Descriptor() ([]byte, []int) {
-	return fileDescriptor_d3a6e55e2345de56, []int{10}
+	return fileDescriptor_d3a6e55e2345de56, []int{12}
 }
 func (m *LightBlock) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -911,7 +1026,7 @@ func (m *BlockMeta) Reset()         { *m = BlockMeta{} }
 func (m *BlockMeta) String() string { return proto.CompactTextString(m) }
 func (*BlockMeta) ProtoMessage()    {}
 func (*BlockMeta) Descriptor() ([]byte, []int) {
-	return fileDescriptor_d3a6e55e2345de56, []int{11}
+	return fileDescriptor_d3a6e55e2345de56, []int{13}
 }
 func (m *BlockMeta) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -980,7 +1095,7 @@ func (m *TxProof) Reset()         { *m = TxProof{} }
 func (m *TxProof) String() string { return proto.CompactTextString(m) }
 func (*TxProof) ProtoMessage()    {}
 func (*TxProof) Descriptor() ([]byte, []int) {
-	return fileDescriptor_d3a6e55e2345de56, []int{12}
+	return fileDescriptor_d3a6e55e2345de56, []int{14}
 }
 func (m *TxProof) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -1039,6 +1154,8 @@ func init() {
 	proto.RegisterType((*Header)(nil), "tendermint.types.Header")
 	proto.RegisterType((*Data)(nil), "tendermint.types.Data")
 	proto.RegisterType((*Vote)(nil), "tendermint.types.Vote")
+	proto.RegisterType((*VoteExtension)(nil), "tendermint.types.VoteExtension")
+	proto.RegisterType((*VoteExtensionToSign)(nil), "tendermint.types.VoteExtensionToSign")
 	proto.RegisterType((*Commit)(nil), "tendermint.types.Commit")
 	proto.RegisterType((*CommitSig)(nil), "tendermint.types.CommitSig")
 	proto.RegisterType((*Proposal)(nil), "tendermint.types.Proposal")
@@ -1051,90 +1168,96 @@ func init() {
 func init() { proto.RegisterFile("tendermint/types/types.proto", fileDescriptor_d3a6e55e2345de56) }
 
 var fileDescriptor_d3a6e55e2345de56 = []byte{
-	// 1314 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xbc, 0x57, 0x4f, 0x6f, 0x1b, 0x45,
-	0x14, 0xcf, 0xda, 0x9b, 0xd8, 0x7e, 0xb6, 0x13, 0x67, 0x95, 0xb6, 0xae, 0xdb, 0x38, 0x2b, 0x23,
-	0x20, 0x2d, 0x68, 0x53, 0x52, 0xc4, 0x9f, 0x03, 0x07, 0xdb, 0x49, 0x5b, 0xab, 0x89, 0x63, 0xd6,
-	0x6e, 0x11, 0x5c, 0x56, 0x6b, 0xef, 0xd4, 0x5e, 0xba, 0xde, 0x59, 0xed, 0x8c, 0x43, 0xd2, 0x4f,
-	0x80, 0x72, 0xea, 0x89, 0x5b, 0x4e, 0x70, 0xe0, 0xce, 0x17, 0x40, 0x9c, 0x7a, 0xec, 0x0d, 0x2e,
-	0x14, 0x94, 0x4a, 0x88, 0x8f, 0x81, 0xe6, 0x8f, 0xd7, 0xeb, 0x38, 0x86, 0xaa, 0xaa, 0xb8, 0x58,
-	0x3b, 0xef, 0xfd, 0xde, 0xcc, 0x7b, 0xbf, 0xf7, 0x9b, 0x3f, 0x86, 0xeb, 0x14, 0xf9, 0x0e, 0x0a,
-	0x87, 0xae, 0x4f, 0xb7, 0xe8, 0x71, 0x80, 0x88, 0xf8, 0x35, 0x82, 0x10, 0x53, 0xac, 0x15, 0x26,
-	0x5e, 0x83, 0xdb, 0x4b, 0x6b, 0x7d, 0xdc, 0xc7, 0xdc, 0xb9, 0xc5, 0xbe, 0x04, 0xae, 0xb4, 0xd1,
-	0xc7, 0xb8, 0xef, 0xa1, 0x2d, 0x3e, 0xea, 0x8e, 0x1e, 0x6d, 0x51, 0x77, 0x88, 0x08, 0xb5, 0x87,
-	0x81, 0x04, 0xac, 0xc7, 0x96, 0xe9, 0x85, 0xc7, 0x01, 0xc5, 0x0c, 0x8b, 0x1f, 0x49, 0x77, 0x39,
-	0xe6, 0x3e, 0x44, 0x21, 0x71, 0xb1, 0x1f, 0xcf, 0xa3, 0xa4, 0xcf, 0x64, 0x79, 0x68, 0x7b, 0xae,
-	0x63, 0x53, 0x1c, 0x0a, 0x44, 0xe5, 0x53, 0xc8, 0xb7, 0xec, 0x90, 0xb6, 0x11, 0xbd, 0x87, 0x6c,
-	0x07, 0x85, 0xda, 0x1a, 0x2c, 0x52, 0x4c, 0x6d, 0xaf, 0xa8, 0xe8, 0xca, 0x66, 0xde, 0x14, 0x03,
-	0x4d, 0x03, 0x75, 0x60, 0x93, 0x41, 0x31, 0xa1, 0x2b, 0x9b, 0x39, 0x93, 0x7f, 0x57, 0x06, 0xa0,
-	0xb2, 0x50, 0x16, 0xe1, 0xfa, 0x0e, 0x3a, 0x1a, 0x47, 0xf0, 0x01, 0xb3, 0x76, 0x8f, 0x29, 0x22,
-	0x32, 0x44, 0x0c, 0xb4, 0x0f, 0x61, 0x91, 0xe7, 0x5f, 0x4c, 0xea, 0xca, 0x66, 0x76, 0xbb, 0x68,
-	0xc4, 0x88, 0x12, 0xf5, 0x19, 0x2d, 0xe6, 0xaf, 0xa9, 0xcf, 0x5e, 0x6c, 0x2c, 0x98, 0x02, 0x5c,
-	0xf1, 0x20, 0x55, 0xf3, 0x70, 0xef, 0x71, 0x63, 0x27, 0x4a, 0x44, 0x99, 0x24, 0xa2, 0xed, 0xc3,
-	0x4a, 0x60, 0x87, 0xd4, 0x22, 0x88, 0x5a, 0x03, 0x5e, 0x05, 0x5f, 0x34, 0xbb, 0xbd, 0x61, 0x9c,
-	0xef, 0x83, 0x31, 0x55, 0xac, 0x5c, 0x25, 0x1f, 0xc4, 0x8d, 0x95, 0xbf, 0x54, 0x58, 0x92, 0x64,
-	0x7c, 0x06, 0x29, 0x49, 0x2b, 0x5f, 0x30, 0xbb, 0xbd, 0x1e, 0x9f, 0x51, 0xba, 0x8c, 0x3a, 0xf6,
-	0x09, 0xf2, 0xc9, 0x88, 0xc8, 0xf9, 0xc6, 0x31, 0xda, 0x3b, 0x90, 0xee, 0x0d, 0x6c, 0xd7, 0xb7,
-	0x5c, 0x87, 0x67, 0x94, 0xa9, 0x65, 0xcf, 0x5e, 0x6c, 0xa4, 0xea, 0xcc, 0xd6, 0xd8, 0x31, 0x53,
-	0xdc, 0xd9, 0x70, 0xb4, 0xcb, 0xb0, 0x34, 0x40, 0x6e, 0x7f, 0x40, 0x39, 0x2d, 0x49, 0x53, 0x8e,
-	0xb4, 0x4f, 0x40, 0x65, 0x82, 0x28, 0xaa, 0x7c, 0xed, 0x92, 0x21, 0xd4, 0x62, 0x8c, 0xd5, 0x62,
-	0x74, 0xc6, 0x6a, 0xa9, 0xa5, 0xd9, 0xc2, 0x4f, 0xff, 0xd8, 0x50, 0x4c, 0x1e, 0xa1, 0xd5, 0x21,
-	0xef, 0xd9, 0x84, 0x5a, 0x5d, 0x46, 0x1b, 0x5b, 0x7e, 0x91, 0x4f, 0x71, 0x75, 0x96, 0x10, 0x49,
-	0xac, 0x4c, 0x3d, 0xcb, 0xa2, 0x84, 0xc9, 0xd1, 0x36, 0xa1, 0xc0, 0x27, 0xe9, 0xe1, 0xe1, 0xd0,
-	0xa5, 0x16, 0xe7, 0x7d, 0x89, 0xf3, 0xbe, 0xcc, 0xec, 0x75, 0x6e, 0xbe, 0xc7, 0x3a, 0x70, 0x0d,
-	0x32, 0x8e, 0x4d, 0x6d, 0x01, 0x49, 0x71, 0x48, 0x9a, 0x19, 0xb8, 0xf3, 0x5d, 0x58, 0x89, 0x54,
-	0x47, 0x04, 0x24, 0x2d, 0x66, 0x99, 0x98, 0x39, 0xf0, 0x16, 0xac, 0xf9, 0xe8, 0x88, 0x5a, 0xe7,
-	0xd1, 0x19, 0x8e, 0xd6, 0x98, 0xef, 0xe1, 0x74, 0xc4, 0xdb, 0xb0, 0xdc, 0x1b, 0x93, 0x2f, 0xb0,
-	0xc0, 0xb1, 0xf9, 0xc8, 0xca, 0x61, 0x57, 0x21, 0x6d, 0x07, 0x81, 0x00, 0x64, 0x39, 0x20, 0x65,
-	0x07, 0x01, 0x77, 0xdd, 0x84, 0x55, 0x5e, 0x63, 0x88, 0xc8, 0xc8, 0xa3, 0x72, 0x92, 0x1c, 0xc7,
-	0xac, 0x30, 0x87, 0x29, 0xec, 0x1c, 0xfb, 0x16, 0xe4, 0xd1, 0xa1, 0xeb, 0x20, 0xbf, 0x87, 0x04,
-	0x2e, 0xcf, 0x71, 0xb9, 0xb1, 0x91, 0x83, 0x6e, 0x40, 0x21, 0x08, 0x71, 0x80, 0x09, 0x0a, 0x2d,
-	0xdb, 0x71, 0x42, 0x44, 0x48, 0x71, 0x59, 0xcc, 0x37, 0xb6, 0x57, 0x85, 0xb9, 0x52, 0x04, 0x75,
-	0xc7, 0xa6, 0xb6, 0x56, 0x80, 0x24, 0x3d, 0x22, 0x45, 0x45, 0x4f, 0x6e, 0xe6, 0x4c, 0xf6, 0x59,
-	0xf9, 0x3b, 0x01, 0xea, 0x43, 0x4c, 0x91, 0x76, 0x1b, 0x54, 0xd6, 0x26, 0xae, 0xbe, 0xe5, 0x8b,
-	0xf4, 0xdc, 0x76, 0xfb, 0x3e, 0x72, 0xf6, 0x49, 0xbf, 0x73, 0x1c, 0x20, 0x93, 0x83, 0x63, 0x72,
-	0x4a, 0x4c, 0xc9, 0x69, 0x0d, 0x16, 0x43, 0x3c, 0xf2, 0x1d, 0xae, 0xb2, 0x45, 0x53, 0x0c, 0xb4,
-	0x5d, 0x48, 0x47, 0x2a, 0x51, 0xff, 0x4b, 0x25, 0x2b, 0x4c, 0x25, 0x4c, 0xc3, 0xd2, 0x60, 0xa6,
-	0xba, 0x52, 0x2c, 0x35, 0xc8, 0x44, 0x87, 0x97, 0x54, 0xdb, 0xab, 0x09, 0x76, 0x12, 0xa6, 0xbd,
-	0x07, 0xab, 0x51, 0xef, 0x23, 0xf2, 0x84, 0xe2, 0x0a, 0x91, 0x43, 0xb2, 0x37, 0x25, 0x2b, 0x4b,
-	0x1c, 0x40, 0x29, 0x5e, 0xd7, 0x44, 0x56, 0x0d, 0x7e, 0x12, 0x5d, 0x87, 0x0c, 0x71, 0xfb, 0xbe,
-	0x4d, 0x47, 0x21, 0x92, 0xca, 0x9b, 0x18, 0x2a, 0x3f, 0x2b, 0xb0, 0x24, 0x94, 0x1c, 0xe3, 0x4d,
-	0xb9, 0x98, 0xb7, 0xc4, 0x3c, 0xde, 0x92, 0xaf, 0xcf, 0x5b, 0x15, 0x20, 0x4a, 0x86, 0x14, 0x55,
-	0x3d, 0xb9, 0x99, 0xdd, 0xbe, 0x36, 0x3b, 0x91, 0x48, 0xb1, 0xed, 0xf6, 0xe5, 0x46, 0x8d, 0x05,
-	0x55, 0x7e, 0x57, 0x20, 0x13, 0xf9, 0xb5, 0x2a, 0xe4, 0xc7, 0x79, 0x59, 0x8f, 0x3c, 0xbb, 0x2f,
-	0xb5, 0xb3, 0x3e, 0x37, 0xb9, 0x3b, 0x9e, 0xdd, 0x37, 0xb3, 0x32, 0x1f, 0x36, 0xb8, 0xb8, 0x0f,
-	0x89, 0x39, 0x7d, 0x98, 0x6a, 0x7c, 0xf2, 0xf5, 0x1a, 0x3f, 0xd5, 0x22, 0xf5, 0x7c, 0x8b, 0x7e,
-	0x4a, 0x40, 0xba, 0xc5, 0xf7, 0x8e, 0xed, 0xfd, 0x1f, 0x3b, 0xe2, 0x1a, 0x64, 0x02, 0xec, 0x59,
-	0xc2, 0xa3, 0x72, 0x4f, 0x3a, 0xc0, 0x9e, 0x39, 0xd3, 0xf6, 0xc5, 0x37, 0xb4, 0x5d, 0x96, 0xde,
-	0x00, 0x6b, 0xa9, 0xf3, 0xac, 0x85, 0x90, 0x13, 0x54, 0xc8, 0xbb, 0xec, 0x16, 0xe3, 0x80, 0x5f,
-	0x8e, 0xca, 0xec, 0xdd, 0x2b, 0xd2, 0x16, 0x48, 0x53, 0xe2, 0x58, 0x84, 0x38, 0xfa, 0xe5, 0x75,
-	0x5a, 0x9c, 0x27, 0x4b, 0x53, 0xe2, 0x2a, 0xdf, 0x29, 0x00, 0x7b, 0x8c, 0x59, 0x5e, 0x2f, 0xbb,
-	0x85, 0x08, 0x4f, 0xc1, 0x9a, 0x5a, 0xb9, 0x3c, 0xaf, 0x69, 0x72, 0xfd, 0x1c, 0x89, 0xe7, 0x5d,
-	0x87, 0xfc, 0x44, 0x8c, 0x04, 0x8d, 0x93, 0xb9, 0x60, 0x92, 0xe8, 0x72, 0x68, 0x23, 0x6a, 0xe6,
-	0x0e, 0x63, 0xa3, 0xca, 0x2f, 0x0a, 0x64, 0x78, 0x4e, 0xfb, 0x88, 0xda, 0x53, 0x3d, 0x54, 0x5e,
-	0xbf, 0x87, 0xeb, 0x00, 0x62, 0x1a, 0xe2, 0x3e, 0x41, 0x52, 0x59, 0x19, 0x6e, 0x69, 0xbb, 0x4f,
-	0x90, 0xf6, 0x51, 0x44, 0x78, 0xf2, 0xdf, 0x09, 0x97, 0x5b, 0x7a, 0x4c, 0xfb, 0x15, 0x48, 0xf9,
-	0xa3, 0xa1, 0xc5, 0xae, 0x04, 0x55, 0xa8, 0xd5, 0x1f, 0x0d, 0x3b, 0x47, 0xa4, 0xf2, 0x35, 0xa4,
-	0x3a, 0x47, 0xfc, 0x79, 0xc4, 0x24, 0x1a, 0x62, 0x2c, 0xef, 0x64, 0xf1, 0x16, 0x4a, 0x33, 0x03,
-	0xbf, 0x82, 0x34, 0x50, 0xd9, 0xe5, 0x3b, 0x7e, 0xac, 0xb1, 0x6f, 0xcd, 0x78, 0xc5, 0x87, 0x97,
-	0x7c, 0x72, 0xdd, 0xfc, 0x55, 0x81, 0x6c, 0xec, 0x7c, 0xd0, 0x3e, 0x80, 0x4b, 0xb5, 0xbd, 0x83,
-	0xfa, 0x7d, 0xab, 0xb1, 0x63, 0xdd, 0xd9, 0xab, 0xde, 0xb5, 0x1e, 0x34, 0xef, 0x37, 0x0f, 0xbe,
-	0x68, 0x16, 0x16, 0x4a, 0x97, 0x4f, 0x4e, 0x75, 0x2d, 0x86, 0x7d, 0xe0, 0x3f, 0xf6, 0xf1, 0x37,
-	0xbe, 0xb6, 0x05, 0x6b, 0xd3, 0x21, 0xd5, 0x5a, 0x7b, 0xb7, 0xd9, 0x29, 0x28, 0xa5, 0x4b, 0x27,
-	0xa7, 0xfa, 0x6a, 0x2c, 0xa2, 0xda, 0x25, 0xc8, 0xa7, 0xb3, 0x01, 0xf5, 0x83, 0xfd, 0xfd, 0x46,
-	0xa7, 0x90, 0x98, 0x09, 0x90, 0x07, 0xf6, 0x0d, 0x58, 0x9d, 0x0e, 0x68, 0x36, 0xf6, 0x0a, 0xc9,
-	0x92, 0x76, 0x72, 0xaa, 0x2f, 0xc7, 0xd0, 0x4d, 0xd7, 0x2b, 0xa5, 0xbf, 0xfd, 0xbe, 0xbc, 0xf0,
-	0xe3, 0x0f, 0x65, 0x85, 0x55, 0x96, 0x9f, 0x3a, 0x23, 0xb4, 0xf7, 0xe1, 0x4a, 0xbb, 0x71, 0xb7,
-	0xb9, 0xbb, 0x63, 0xed, 0xb7, 0xef, 0x5a, 0x9d, 0x2f, 0x5b, 0xbb, 0xb1, 0xea, 0x56, 0x4e, 0x4e,
-	0xf5, 0xac, 0x2c, 0x69, 0x1e, 0xba, 0x65, 0xee, 0x3e, 0x3c, 0xe8, 0xec, 0x16, 0x14, 0x81, 0x6e,
-	0x85, 0xe8, 0x10, 0x53, 0xc4, 0xd1, 0xb7, 0xe0, 0xea, 0x05, 0xe8, 0xa8, 0xb0, 0xd5, 0x93, 0x53,
-	0x3d, 0xdf, 0x0a, 0x91, 0xd8, 0x3f, 0x3c, 0xc2, 0x80, 0xe2, 0x6c, 0xc4, 0x41, 0xeb, 0xa0, 0x5d,
-	0xdd, 0x2b, 0xe8, 0xa5, 0xc2, 0xc9, 0xa9, 0x9e, 0x1b, 0x1f, 0x86, 0x0c, 0x3f, 0xa9, 0xac, 0xf6,
-	0xf9, 0xb3, 0xb3, 0xb2, 0xf2, 0xfc, 0xac, 0xac, 0xfc, 0x79, 0x56, 0x56, 0x9e, 0xbe, 0x2c, 0x2f,
-	0x3c, 0x7f, 0x59, 0x5e, 0xf8, 0xed, 0x65, 0x79, 0xe1, 0xab, 0x8f, 0xfb, 0x2e, 0x1d, 0x8c, 0xba,
-	0x46, 0x0f, 0x0f, 0xb7, 0xe2, 0x7f, 0x09, 0x26, 0x9f, 0xe2, 0xaf, 0xc9, 0xf9, 0xbf, 0x0b, 0xdd,
-	0x25, 0x6e, 0xbf, 0xfd, 0x4f, 0x00, 0x00, 0x00, 0xff, 0xff, 0x4c, 0x78, 0x43, 0xdf, 0xef, 0x0c,
-	0x00, 0x00,
+	// 1423 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xbc, 0x57, 0x4f, 0x6f, 0xdb, 0x64,
+	0x18, 0xaf, 0x13, 0xb7, 0x49, 0x9e, 0xc4, 0x6d, 0xfa, 0xd2, 0x6d, 0x69, 0xb6, 0xa6, 0x91, 0xd1,
+	0x58, 0x37, 0x50, 0x3a, 0x3a, 0xc4, 0x9f, 0x03, 0xa0, 0x24, 0xcd, 0xb6, 0x68, 0x6d, 0x1a, 0x9c,
+	0x6c, 0x08, 0x2e, 0x96, 0x93, 0xbc, 0x4d, 0xcc, 0x1c, 0xdb, 0xb2, 0xdf, 0x94, 0x76, 0x9f, 0x00,
+	0xf5, 0xb4, 0x13, 0xb7, 0x9e, 0xe0, 0x80, 0xc4, 0x05, 0x89, 0x2f, 0x80, 0x38, 0xed, 0xb8, 0x1b,
+	0x9c, 0x06, 0xea, 0x24, 0x3e, 0x07, 0x7a, 0xff, 0xc4, 0xb1, 0x9b, 0x86, 0x4d, 0xd5, 0xc4, 0x25,
+	0xf2, 0xfb, 0x3c, 0xbf, 0xe7, 0xff, 0xcf, 0x8f, 0xdf, 0xc0, 0x35, 0x82, 0xed, 0x1e, 0xf6, 0x86,
+	0xa6, 0x4d, 0x36, 0xc9, 0x91, 0x8b, 0x7d, 0xfe, 0x5b, 0x72, 0x3d, 0x87, 0x38, 0x28, 0x3b, 0xd1,
+	0x96, 0x98, 0x3c, 0xbf, 0xd2, 0x77, 0xfa, 0x0e, 0x53, 0x6e, 0xd2, 0x27, 0x8e, 0xcb, 0xaf, 0xf7,
+	0x1d, 0xa7, 0x6f, 0xe1, 0x4d, 0x76, 0xea, 0x8c, 0xf6, 0x37, 0x89, 0x39, 0xc4, 0x3e, 0x31, 0x86,
+	0xae, 0x00, 0xac, 0x85, 0xc2, 0x74, 0xbd, 0x23, 0x97, 0x38, 0x14, 0xeb, 0xec, 0x0b, 0x75, 0x21,
+	0xa4, 0x3e, 0xc0, 0x9e, 0x6f, 0x3a, 0x76, 0x38, 0x8f, 0x7c, 0x71, 0x2a, 0xcb, 0x03, 0xc3, 0x32,
+	0x7b, 0x06, 0x71, 0x3c, 0x8e, 0x50, 0x3f, 0x01, 0xa5, 0x69, 0x78, 0xa4, 0x85, 0xc9, 0x7d, 0x6c,
+	0xf4, 0xb0, 0x87, 0x56, 0x60, 0x9e, 0x38, 0xc4, 0xb0, 0x72, 0x52, 0x51, 0xda, 0x50, 0x34, 0x7e,
+	0x40, 0x08, 0xe4, 0x81, 0xe1, 0x0f, 0x72, 0xb1, 0xa2, 0xb4, 0x91, 0xd1, 0xd8, 0xb3, 0x3a, 0x00,
+	0x99, 0x9a, 0x52, 0x0b, 0xd3, 0xee, 0xe1, 0xc3, 0xb1, 0x05, 0x3b, 0x50, 0x69, 0xe7, 0x88, 0x60,
+	0x5f, 0x98, 0xf0, 0x03, 0xfa, 0x00, 0xe6, 0x59, 0xfe, 0xb9, 0x78, 0x51, 0xda, 0x48, 0x6f, 0xe5,
+	0x4a, 0xa1, 0x46, 0xf1, 0xfa, 0x4a, 0x4d, 0xaa, 0xaf, 0xc8, 0xcf, 0x5e, 0xac, 0xcf, 0x69, 0x1c,
+	0xac, 0x5a, 0x90, 0xa8, 0x58, 0x4e, 0xf7, 0x71, 0x7d, 0x3b, 0x48, 0x44, 0x9a, 0x24, 0x82, 0x76,
+	0x61, 0xc9, 0x35, 0x3c, 0xa2, 0xfb, 0x98, 0xe8, 0x03, 0x56, 0x05, 0x0b, 0x9a, 0xde, 0x5a, 0x2f,
+	0x9d, 0x9d, 0x43, 0x29, 0x52, 0xac, 0x88, 0xa2, 0xb8, 0x61, 0xa1, 0xfa, 0x8f, 0x0c, 0x0b, 0xa2,
+	0x19, 0x9f, 0x42, 0x42, 0xb4, 0x95, 0x05, 0x4c, 0x6f, 0xad, 0x85, 0x3d, 0x0a, 0x55, 0xa9, 0xea,
+	0xd8, 0x3e, 0xb6, 0xfd, 0x91, 0x2f, 0xfc, 0x8d, 0x6d, 0xd0, 0x3b, 0x90, 0xec, 0x0e, 0x0c, 0xd3,
+	0xd6, 0xcd, 0x1e, 0xcb, 0x28, 0x55, 0x49, 0x9f, 0xbe, 0x58, 0x4f, 0x54, 0xa9, 0xac, 0xbe, 0xad,
+	0x25, 0x98, 0xb2, 0xde, 0x43, 0x97, 0x61, 0x61, 0x80, 0xcd, 0xfe, 0x80, 0xb0, 0xb6, 0xc4, 0x35,
+	0x71, 0x42, 0x1f, 0x83, 0x4c, 0x09, 0x91, 0x93, 0x59, 0xec, 0x7c, 0x89, 0xb3, 0xa5, 0x34, 0x66,
+	0x4b, 0xa9, 0x3d, 0x66, 0x4b, 0x25, 0x49, 0x03, 0x3f, 0xfd, 0x6b, 0x5d, 0xd2, 0x98, 0x05, 0xaa,
+	0x82, 0x62, 0x19, 0x3e, 0xd1, 0x3b, 0xb4, 0x6d, 0x34, 0xfc, 0x3c, 0x73, 0xb1, 0x3a, 0xdd, 0x10,
+	0xd1, 0x58, 0x91, 0x7a, 0x9a, 0x5a, 0x71, 0x51, 0x0f, 0x6d, 0x40, 0x96, 0x39, 0xe9, 0x3a, 0xc3,
+	0xa1, 0x49, 0x74, 0xd6, 0xf7, 0x05, 0xd6, 0xf7, 0x45, 0x2a, 0xaf, 0x32, 0xf1, 0x7d, 0x3a, 0x81,
+	0xab, 0x90, 0xea, 0x19, 0xc4, 0xe0, 0x90, 0x04, 0x83, 0x24, 0xa9, 0x80, 0x29, 0x6f, 0xc0, 0x52,
+	0xc0, 0x3a, 0x9f, 0x43, 0x92, 0xdc, 0xcb, 0x44, 0xcc, 0x80, 0xb7, 0x61, 0xc5, 0xc6, 0x87, 0x44,
+	0x3f, 0x8b, 0x4e, 0x31, 0x34, 0xa2, 0xba, 0x47, 0x51, 0x8b, 0xeb, 0xb0, 0xd8, 0x1d, 0x37, 0x9f,
+	0x63, 0x81, 0x61, 0x95, 0x40, 0xca, 0x60, 0xab, 0x90, 0x34, 0x5c, 0x97, 0x03, 0xd2, 0x0c, 0x90,
+	0x30, 0x5c, 0x97, 0xa9, 0x6e, 0xc1, 0x32, 0xab, 0xd1, 0xc3, 0xfe, 0xc8, 0x22, 0xc2, 0x49, 0x86,
+	0x61, 0x96, 0xa8, 0x42, 0xe3, 0x72, 0x86, 0x7d, 0x1b, 0x14, 0x7c, 0x60, 0xf6, 0xb0, 0xdd, 0xc5,
+	0x1c, 0xa7, 0x30, 0x5c, 0x66, 0x2c, 0x64, 0xa0, 0x9b, 0x90, 0x75, 0x3d, 0xc7, 0x75, 0x7c, 0xec,
+	0xe9, 0x46, 0xaf, 0xe7, 0x61, 0xdf, 0xcf, 0x2d, 0x72, 0x7f, 0x63, 0x79, 0x99, 0x8b, 0xd5, 0x1c,
+	0xc8, 0xdb, 0x06, 0x31, 0x50, 0x16, 0xe2, 0xe4, 0xd0, 0xcf, 0x49, 0xc5, 0xf8, 0x46, 0x46, 0xa3,
+	0x8f, 0xea, 0x2f, 0x71, 0x90, 0x1f, 0x39, 0x04, 0xa3, 0x3b, 0x20, 0xd3, 0x31, 0x31, 0xf6, 0x2d,
+	0x9e, 0xc7, 0xe7, 0x96, 0xd9, 0xb7, 0x71, 0x6f, 0xd7, 0xef, 0xb7, 0x8f, 0x5c, 0xac, 0x31, 0x70,
+	0x88, 0x4e, 0xb1, 0x08, 0x9d, 0x56, 0x60, 0xde, 0x73, 0x46, 0x76, 0x8f, 0xb1, 0x6c, 0x5e, 0xe3,
+	0x07, 0x54, 0x83, 0x64, 0xc0, 0x12, 0xf9, 0x55, 0x2c, 0x59, 0xa2, 0x2c, 0xa1, 0x1c, 0x16, 0x02,
+	0x2d, 0xd1, 0x11, 0x64, 0xa9, 0x40, 0x2a, 0x58, 0x5e, 0x82, 0x6d, 0xaf, 0x47, 0xd8, 0x89, 0x19,
+	0x7a, 0x17, 0x96, 0x83, 0xd9, 0x07, 0xcd, 0xe3, 0x8c, 0xcb, 0x06, 0x0a, 0xd1, 0xbd, 0x08, 0xad,
+	0x74, 0xbe, 0x80, 0x12, 0xac, 0xae, 0x09, 0xad, 0xea, 0x6c, 0x13, 0x5d, 0x83, 0x94, 0x6f, 0xf6,
+	0x6d, 0x83, 0x8c, 0x3c, 0x2c, 0x98, 0x37, 0x11, 0xa0, 0xbb, 0xb0, 0x78, 0xe0, 0x10, 0xac, 0xe3,
+	0x43, 0x82, 0x6d, 0xf6, 0xa6, 0xa7, 0x66, 0xed, 0x0e, 0x3a, 0x91, 0xda, 0x18, 0xa6, 0x29, 0x07,
+	0xe1, 0xa3, 0x7a, 0x04, 0x4a, 0x44, 0x8f, 0x6e, 0x40, 0x96, 0x92, 0x8e, 0xbd, 0x17, 0xc4, 0xd1,
+	0x69, 0x44, 0xb1, 0xb5, 0x14, 0xc3, 0x75, 0xe9, 0xe0, 0xdb, 0x0e, 0x9d, 0x1e, 0xfa, 0x1c, 0xae,
+	0x05, 0x40, 0x1f, 0x5b, 0xfb, 0xba, 0x31, 0x22, 0x03, 0x6c, 0x13, 0xb3, 0x6b, 0x10, 0xd3, 0xee,
+	0x8b, 0x05, 0xba, 0x2a, 0x8c, 0x5a, 0xd8, 0xda, 0x2f, 0x47, 0x00, 0xea, 0x67, 0xf0, 0x56, 0x24,
+	0xb4, 0xf0, 0xfb, 0xba, 0x09, 0xa8, 0xbf, 0x49, 0xb0, 0xc0, 0x5f, 0xe6, 0x10, 0x75, 0xa4, 0xf3,
+	0xa9, 0x13, 0x9b, 0x45, 0x9d, 0xf8, 0xc5, 0xa9, 0x53, 0x06, 0x08, 0xe6, 0xe1, 0xe7, 0xe4, 0x62,
+	0x7c, 0x23, 0xbd, 0x75, 0x75, 0xda, 0x11, 0x4f, 0xb1, 0x65, 0xf6, 0xc5, 0xae, 0x0a, 0x19, 0xa9,
+	0x3f, 0xc7, 0x20, 0x15, 0xe8, 0x51, 0x19, 0x94, 0x71, 0x5e, 0xfa, 0xbe, 0x65, 0xf4, 0xc5, 0xeb,
+	0xb3, 0x36, 0x33, 0xb9, 0xbb, 0x96, 0xd1, 0xd7, 0xd2, 0x22, 0x1f, 0x7a, 0x38, 0x9f, 0x8a, 0xb1,
+	0x19, 0x54, 0x8c, 0x70, 0x3f, 0x7e, 0x31, 0xee, 0x47, 0x58, 0x2a, 0x9f, 0x65, 0xe9, 0xce, 0x14,
+	0x4b, 0xf9, 0x2b, 0x76, 0xfd, 0x15, 0x2c, 0xe5, 0x13, 0x3e, 0xcb, 0xd5, 0x5f, 0x63, 0x90, 0x6c,
+	0xb2, 0x65, 0x64, 0x58, 0xff, 0xc7, 0x8a, 0xb9, 0x0a, 0x29, 0xd7, 0xb1, 0x74, 0xae, 0x91, 0x99,
+	0x26, 0xe9, 0x3a, 0x96, 0x36, 0x45, 0xa2, 0xf9, 0x37, 0xb4, 0x7f, 0x16, 0xde, 0xc0, 0x0c, 0x12,
+	0x67, 0x66, 0xa0, 0x7a, 0x90, 0xe1, 0xad, 0x10, 0x97, 0x83, 0xdb, 0xb4, 0x07, 0xec, 0xb6, 0x21,
+	0x4d, 0x5f, 0x66, 0x78, 0xda, 0x1c, 0xa9, 0x09, 0x1c, 0xb5, 0xe0, 0xdf, 0x52, 0x71, 0x3f, 0xc9,
+	0xcd, 0x22, 0xb9, 0x26, 0x70, 0xea, 0xf7, 0x12, 0xc0, 0x0e, 0xed, 0x2c, 0xab, 0x97, 0x7e, 0xd6,
+	0x7d, 0x96, 0x82, 0x1e, 0x89, 0x5c, 0x98, 0x35, 0x34, 0x11, 0x3f, 0xe3, 0x87, 0xf3, 0xae, 0x82,
+	0x32, 0xa1, 0xb6, 0x8f, 0xc7, 0xc9, 0x9c, 0xe3, 0x24, 0xf8, 0xda, 0xb6, 0x30, 0xd1, 0x32, 0x07,
+	0xa1, 0x93, 0xfa, 0xbb, 0x04, 0x29, 0x96, 0xd3, 0x2e, 0x26, 0x46, 0x64, 0x86, 0xd2, 0xc5, 0x67,
+	0xb8, 0x06, 0xc0, 0xdd, 0xf8, 0xe6, 0x13, 0x2c, 0x98, 0x95, 0x62, 0x92, 0x96, 0xf9, 0x04, 0xa3,
+	0x0f, 0x83, 0x86, 0xc7, 0xff, 0xbb, 0xe1, 0x62, 0x41, 0x8c, 0xdb, 0x7e, 0x05, 0x12, 0xf6, 0x68,
+	0xa8, 0xd3, 0x6f, 0xac, 0xcc, 0xd9, 0x6a, 0x8f, 0x86, 0xed, 0x43, 0x5f, 0xfd, 0x06, 0x12, 0xed,
+	0x43, 0x76, 0xdf, 0xa4, 0x14, 0xf5, 0x1c, 0x47, 0x5c, 0x72, 0xf8, 0x96, 0x4c, 0x52, 0x01, 0xfb,
+	0xa6, 0x23, 0x90, 0xe9, 0x16, 0x1d, 0xdf, 0x7e, 0xe9, 0x33, 0x2a, 0xbd, 0xe6, 0x4d, 0x56, 0xdc,
+	0x61, 0x6f, 0xfd, 0x21, 0x41, 0x3a, 0xb4, 0x6d, 0xd0, 0xfb, 0x70, 0xa9, 0xb2, 0xb3, 0x57, 0x7d,
+	0xa0, 0xd7, 0xb7, 0xf5, 0xbb, 0x3b, 0xe5, 0x7b, 0xfa, 0xc3, 0xc6, 0x83, 0xc6, 0xde, 0x97, 0x8d,
+	0xec, 0x5c, 0xfe, 0xf2, 0xf1, 0x49, 0x11, 0x85, 0xb0, 0x0f, 0xed, 0xc7, 0xb6, 0xf3, 0xad, 0x8d,
+	0x36, 0x61, 0x25, 0x6a, 0x52, 0xae, 0xb4, 0x6a, 0x8d, 0x76, 0x56, 0xca, 0x5f, 0x3a, 0x3e, 0x29,
+	0x2e, 0x87, 0x2c, 0xca, 0x1d, 0x1f, 0xdb, 0x64, 0xda, 0xa0, 0xba, 0xb7, 0xbb, 0x5b, 0x6f, 0x67,
+	0x63, 0x53, 0x06, 0x62, 0xfd, 0xdf, 0x84, 0xe5, 0xa8, 0x41, 0xa3, 0xbe, 0x93, 0x8d, 0xe7, 0xd1,
+	0xf1, 0x49, 0x71, 0x31, 0x84, 0x6e, 0x98, 0x56, 0x3e, 0xf9, 0xdd, 0x0f, 0x85, 0xb9, 0x9f, 0x7e,
+	0x2c, 0x48, 0xb4, 0x32, 0x25, 0xb2, 0x23, 0xd0, 0x7b, 0x70, 0xa5, 0x55, 0xbf, 0xd7, 0xa8, 0x6d,
+	0xeb, 0xbb, 0xad, 0x7b, 0x7a, 0xfb, 0xab, 0x66, 0x2d, 0x54, 0xdd, 0xd2, 0xf1, 0x49, 0x31, 0x2d,
+	0x4a, 0x9a, 0x85, 0x6e, 0x6a, 0xb5, 0x47, 0x7b, 0xed, 0x5a, 0x56, 0xe2, 0xe8, 0xa6, 0x87, 0xe9,
+	0x02, 0x63, 0xe8, 0xdb, 0xb0, 0x7a, 0x0e, 0x3a, 0x28, 0x6c, 0xf9, 0xf8, 0xa4, 0xa8, 0x34, 0x3d,
+	0xcc, 0xdf, 0x1f, 0x66, 0x51, 0x82, 0xdc, 0xb4, 0xc5, 0x5e, 0x73, 0xaf, 0x55, 0xde, 0xc9, 0x16,
+	0xf3, 0xd9, 0xe3, 0x93, 0x62, 0x66, 0xbc, 0x0c, 0x29, 0x7e, 0x52, 0x59, 0xe5, 0x8b, 0x67, 0xa7,
+	0x05, 0xe9, 0xf9, 0x69, 0x41, 0xfa, 0xfb, 0xb4, 0x20, 0x3d, 0x7d, 0x59, 0x98, 0x7b, 0xfe, 0xb2,
+	0x30, 0xf7, 0xe7, 0xcb, 0xc2, 0xdc, 0xd7, 0x1f, 0xf5, 0x4d, 0x32, 0x18, 0x75, 0x4a, 0x5d, 0x67,
+	0xb8, 0x19, 0xfe, 0x8f, 0x35, 0x79, 0xe4, 0xff, 0xf5, 0xce, 0xfe, 0xff, 0xea, 0x2c, 0x30, 0xf9,
+	0x9d, 0x7f, 0x03, 0x00, 0x00, 0xff, 0xff, 0x38, 0xfc, 0x14, 0xb1, 0x40, 0x0e, 0x00, 0x00,
 }
 
 func (m *PartSetHeader) Marshal() (dAtA []byte, err error) {
@@ -1435,6 +1558,18 @@ func (m *Vote) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	_ = i
 	var l int
 	_ = l
+	if m.VoteExtension != nil {
+		{
+			size, err := m.VoteExtension.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintTypes(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x4a
+	}
 	if len(m.Signature) > 0 {
 		i -= len(m.Signature)
 		copy(dAtA[i:], m.Signature)
@@ -1454,12 +1589,12 @@ func (m *Vote) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		i--
 		dAtA[i] = 0x32
 	}
-	n6, err6 := github_com_gogo_protobuf_types.StdTimeMarshalTo(m.Timestamp, dAtA[i-github_com_gogo_protobuf_types.SizeOfStdTime(m.Timestamp):])
-	if err6 != nil {
-		return 0, err6
+	n7, err7 := github_com_gogo_protobuf_types.StdTimeMarshalTo(m.Timestamp, dAtA[i-github_com_gogo_protobuf_types.SizeOfStdTime(m.Timestamp):])
+	if err7 != nil {
+		return 0, err7
 	}
-	i -= n6
-	i = encodeVarintTypes(dAtA, i, uint64(n6))
+	i -= n7
+	i = encodeVarintTypes(dAtA, i, uint64(n7))
 	i--
 	dAtA[i] = 0x2a
 	{
@@ -1490,6 +1625,73 @@ func (m *Vote) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	return len(dAtA) - i, nil
 }
 
+func (m *VoteExtension) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalToSizedBuffer(dAtA[:size])
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *VoteExtension) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *VoteExtension) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	if len(m.AppDataSelfAuthenticating) > 0 {
+		i -= len(m.AppDataSelfAuthenticating)
+		copy(dAtA[i:], m.AppDataSelfAuthenticating)
+		i = encodeVarintTypes(dAtA, i, uint64(len(m.AppDataSelfAuthenticating)))
+		i--
+		dAtA[i] = 0x12
+	}
+	if len(m.AppDataToSign) > 0 {
+		i -= len(m.AppDataToSign)
+		copy(dAtA[i:], m.AppDataToSign)
+		i = encodeVarintTypes(dAtA, i, uint64(len(m.AppDataToSign)))
+		i--
+		dAtA[i] = 0xa
+	}
+	return len(dAtA) - i, nil
+}
+
+func (m *VoteExtensionToSign) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalToSizedBuffer(dAtA[:size])
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *VoteExtensionToSign) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *VoteExtensionToSign) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	if len(m.AppDataToSign) > 0 {
+		i -= len(m.AppDataToSign)
+		copy(dAtA[i:], m.AppDataToSign)
+		i = encodeVarintTypes(dAtA, i, uint64(len(m.AppDataToSign)))
+		i--
+		dAtA[i] = 0xa
+	}
+	return len(dAtA) - i, nil
+}
+
 func (m *Commit) Marshal() (dAtA []byte, err error) {
 	size := m.Size()
 	dAtA = make([]byte, size)
@@ -1567,6 +1769,18 @@ func (m *CommitSig) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	_ = i
 	var l int
 	_ = l
+	if m.VoteExtension != nil {
+		{
+			size, err := m.VoteExtension.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintTypes(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x2a
+	}
 	if len(m.Signature) > 0 {
 		i -= len(m.Signature)
 		copy(dAtA[i:], m.Signature)
@@ -1574,12 +1788,12 @@ func (m *CommitSig) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		i--
 		dAtA[i] = 0x22
 	}
-	n9, err9 := github_com_gogo_protobuf_types.StdTimeMarshalTo(m.Timestamp, dAtA[i-github_com_gogo_protobuf_types.SizeOfStdTime(m.Timestamp):])
-	if err9 != nil {
-		return 0, err9
+	n11, err11 := github_com_gogo_protobuf_types.StdTimeMarshalTo(m.Timestamp, dAtA[i-github_com_gogo_protobuf_types.SizeOfStdTime(m.Timestamp):])
+	if err11 != nil {
+		return 0, err11
 	}
-	i -= n9
-	i = encodeVarintTypes(dAtA, i, uint64(n9))
+	i -= n11
+	i = encodeVarintTypes(dAtA, i, uint64(n11))
 	i--
 	dAtA[i] = 0x1a
 	if len(m.ValidatorAddress) > 0 {
@@ -1624,12 +1838,12 @@ func (m *Proposal) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		i--
 		dAtA[i] = 0x3a
 	}
-	n10, err10 := github_com_gogo_protobuf_types.StdTimeMarshalTo(m.Timestamp, dAtA[i-github_com_gogo_protobuf_types.SizeOfStdTime(m.Timestamp):])
-	if err10 != nil {
-		return 0, err10
+	n12, err12 := github_com_gogo_protobuf_types.StdTimeMarshalTo(m.Timestamp, dAtA[i-github_com_gogo_protobuf_types.SizeOfStdTime(m.Timestamp):])
+	if err12 != nil {
+		return 0, err12
 	}
-	i -= n10
-	i = encodeVarintTypes(dAtA, i, uint64(n10))
+	i -= n12
+	i = encodeVarintTypes(dAtA, i, uint64(n12))
 	i--
 	dAtA[i] = 0x32
 	{
@@ -2024,6 +2238,40 @@ func (m *Vote) Size() (n int) {
 	if l > 0 {
 		n += 1 + l + sovTypes(uint64(l))
 	}
+	if m.VoteExtension != nil {
+		l = m.VoteExtension.Size()
+		n += 1 + l + sovTypes(uint64(l))
+	}
+	return n
+}
+
+func (m *VoteExtension) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	l = len(m.AppDataToSign)
+	if l > 0 {
+		n += 1 + l + sovTypes(uint64(l))
+	}
+	l = len(m.AppDataSelfAuthenticating)
+	if l > 0 {
+		n += 1 + l + sovTypes(uint64(l))
+	}
+	return n
+}
+
+func (m *VoteExtensionToSign) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	l = len(m.AppDataToSign)
+	if l > 0 {
+		n += 1 + l + sovTypes(uint64(l))
+	}
 	return n
 }
 
@@ -2069,6 +2317,10 @@ func (m *CommitSig) Size() (n int) {
 	if l > 0 {
 		n += 1 + l + sovTypes(uint64(l))
 	}
+	if m.VoteExtension != nil {
+		l = m.VoteExtension.Size()
+		n += 1 + l + sovTypes(uint64(l))
+	}
 	return n
 }
 
@@ -3364,6 +3616,244 @@ func (m *Vote) Unmarshal(dAtA []byte) error {
 				m.Signature = []byte{}
 			}
 			iNdEx = postIndex
+		case 9:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field VoteExtension", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowTypes
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthTypes
+			}
+			postIndex := iNdEx + msglen
+			if postIndex < 0 {
+				return ErrInvalidLengthTypes
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			if m.VoteExtension == nil {
+				m.VoteExtension = &VoteExtension{}
+			}
+			if err := m.VoteExtension.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skipTypes(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if (skippy < 0) || (iNdEx+skippy) < 0 {
+				return ErrInvalidLengthTypes
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
+func (m *VoteExtension) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowTypes
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= uint64(b&0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: VoteExtension: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: VoteExtension: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field AppDataToSign", wireType)
+			}
+			var byteLen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowTypes
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				byteLen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if byteLen < 0 {
+				return ErrInvalidLengthTypes
+			}
+			postIndex := iNdEx + byteLen
+			if postIndex < 0 {
+				return ErrInvalidLengthTypes
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.AppDataToSign = append(m.AppDataToSign[:0], dAtA[iNdEx:postIndex]...)
+			if m.AppDataToSign == nil {
+				m.AppDataToSign = []byte{}
+			}
+			iNdEx = postIndex
+		case 2:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field AppDataSelfAuthenticating", wireType)
+			}
+			var byteLen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowTypes
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				byteLen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if byteLen < 0 {
+				return ErrInvalidLengthTypes
+			}
+			postIndex := iNdEx + byteLen
+			if postIndex < 0 {
+				return ErrInvalidLengthTypes
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.AppDataSelfAuthenticating = append(m.AppDataSelfAuthenticating[:0], dAtA[iNdEx:postIndex]...)
+			if m.AppDataSelfAuthenticating == nil {
+				m.AppDataSelfAuthenticating = []byte{}
+			}
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skipTypes(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if (skippy < 0) || (iNdEx+skippy) < 0 {
+				return ErrInvalidLengthTypes
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
+func (m *VoteExtensionToSign) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowTypes
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= uint64(b&0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: VoteExtensionToSign: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: VoteExtensionToSign: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field AppDataToSign", wireType)
+			}
+			var byteLen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowTypes
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				byteLen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if byteLen < 0 {
+				return ErrInvalidLengthTypes
+			}
+			postIndex := iNdEx + byteLen
+			if postIndex < 0 {
+				return ErrInvalidLengthTypes
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.AppDataToSign = append(m.AppDataToSign[:0], dAtA[iNdEx:postIndex]...)
+			if m.AppDataToSign == nil {
+				m.AppDataToSign = []byte{}
+			}
+			iNdEx = postIndex
 		default:
 			iNdEx = preIndex
 			skippy, err := skipTypes(dAtA[iNdEx:])
@@ -3689,6 +4179,42 @@ func (m *CommitSig) Unmarshal(dAtA []byte) error {
 				m.Signature = []byte{}
 			}
 			iNdEx = postIndex
+		case 5:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field VoteExtension", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowTypes
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthTypes
+			}
+			postIndex := iNdEx + msglen
+			if postIndex < 0 {
+				return ErrInvalidLengthTypes
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			if m.VoteExtension == nil {
+				m.VoteExtension = &VoteExtensionToSign{}
+			}
+			if err := m.VoteExtension.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
 		default:
 			iNdEx = preIndex
 			skippy, err := skipTypes(dAtA[iNdEx:])

types/block.go

@@ -602,19 +602,21 @@ const (
 
 // CommitSig is a part of the Vote included in a Commit.
 type CommitSig struct {
-	BlockIDFlag      BlockIDFlag `json:"block_id_flag"`
-	ValidatorAddress Address     `json:"validator_address"`
-	Timestamp        time.Time   `json:"timestamp"`
-	Signature        []byte      `json:"signature"`
+	BlockIDFlag      BlockIDFlag         `json:"block_id_flag"`
+	ValidatorAddress Address             `json:"validator_address"`
+	Timestamp        time.Time           `json:"timestamp"`
+	Signature        []byte              `json:"signature"`
+	VoteExtension    VoteExtensionToSign `json:"vote_extension"`
 }
 
 // NewCommitSigForBlock returns new CommitSig with BlockIDFlagCommit.
-func NewCommitSigForBlock(signature []byte, valAddr Address, ts time.Time) CommitSig {
+func NewCommitSigForBlock(signature []byte, valAddr Address, ts time.Time, ext VoteExtensionToSign) CommitSig {
 	return CommitSig{
 		BlockIDFlag:      BlockIDFlagCommit,
 		ValidatorAddress: valAddr,
 		Timestamp:        ts,
 		Signature:        signature,
+		VoteExtension:    ext,
 	}
 }
 
@@ -647,12 +649,14 @@ func (cs CommitSig) Absent() bool {
 // 1. first 6 bytes of signature
 // 2. first 6 bytes of validator address
 // 3. block ID flag
-// 4. timestamp
+// 4. first 6 bytes of the vote extension
+// 5. timestamp
 func (cs CommitSig) String() string {
-	return fmt.Sprintf("CommitSig{%X by %X on %v @ %s}",
+	return fmt.Sprintf("CommitSig{%X by %X on %v with %X @ %s}",
 		tmbytes.Fingerprint(cs.Signature),
 		tmbytes.Fingerprint(cs.ValidatorAddress),
 		cs.BlockIDFlag,
+		tmbytes.Fingerprint(cs.VoteExtension.BytesPacked()),
 		CanonicalTime(cs.Timestamp))
 }
 
@@ -801,6 +805,7 @@ func (commit *Commit) GetVote(valIdx int32) *Vote {
 		ValidatorAddress: commitSig.ValidatorAddress,
 		ValidatorIndex:   valIdx,
 		Signature:        commitSig.Signature,
+		VoteExtension:    commitSig.VoteExtension.ToVoteExtension(),
 	}
 }
 

types/canonical.go

@@ -51,16 +51,26 @@ func CanonicalizeProposal(chainID string, proposal *tmproto.Proposal) tmproto.Ca
 	}
 }
 
+func GetVoteExtensionToSign(ext *tmproto.VoteExtension) *tmproto.VoteExtensionToSign {
+	if ext == nil {
+		return nil
+	}
+	return &tmproto.VoteExtensionToSign{
+		AppDataToSign: ext.AppDataToSign,
+	}
+}
+
 // CanonicalizeVote transforms the given Vote to a CanonicalVote, which does
 // not contain ValidatorIndex and ValidatorAddress fields.
 func CanonicalizeVote(chainID string, vote *tmproto.Vote) tmproto.CanonicalVote {
 	return tmproto.CanonicalVote{
-		Type:      vote.Type,
-		Height:    vote.Height,       // encoded as sfixed64
-		Round:     int64(vote.Round), // encoded as sfixed64
-		BlockID:   CanonicalizeBlockID(vote.BlockID),
-		Timestamp: vote.Timestamp,
-		ChainID:   chainID,
+		Type:          vote.Type,
+		Height:        vote.Height,       // encoded as sfixed64
+		Round:         int64(vote.Round), // encoded as sfixed64
+		BlockID:       CanonicalizeBlockID(vote.BlockID),
+		Timestamp:     vote.Timestamp,
+		ChainID:       chainID,
+		VoteExtension: GetVoteExtensionToSign(vote.VoteExtension),
 	}
 }
 

types/vote.go

@@ -24,6 +24,7 @@ var (
 	ErrVoteInvalidBlockHash          = errors.New("invalid block hash")
 	ErrVoteNonDeterministicSignature = errors.New("non-deterministic signature")
 	ErrVoteNil                       = errors.New("nil vote")
+	ErrVoteInvalidExtension          = errors.New("invalid vote extension")
 )
 
 type ErrVoteConflictingVotes struct {
@@ -45,6 +46,52 @@ func NewConflictingVoteError(vote1, vote2 *Vote) *ErrVoteConflictingVotes {
 // Address is hex bytes.
 type Address = crypto.Address
 
+// VoteExtensionToSign is a subset of VoteExtension
+// that is signed by the validators private key
+type VoteExtensionToSign struct {
+	AppDataToSign []byte `json:"app_data_to_sign"`
+}
+
+// BytesPacked returns a bytes-packed representation for
+// debugging and human identification. This function should
+// not be used for any logical operations.
+func (ext VoteExtensionToSign) BytesPacked() []byte {
+	res := make([]byte, len(ext.AppDataToSign))
+	copy(res, ext.AppDataToSign)
+	return res
+}
+
+// ToVoteExtension constructs a VoteExtension from a VoteExtensionToSign
+func (ext VoteExtensionToSign) ToVoteExtension() VoteExtension {
+	return VoteExtension{
+		AppDataToSign: ext.AppDataToSign,
+	}
+}
+
+// VoteExtension is a set of data provided by the application
+// that is additionally included in the vote
+type VoteExtension struct {
+	AppDataToSign             []byte `json:"app_data_to_sign"`
+	AppDataSelfAuthenticating []byte `json:"app_data_self_authenticating"`
+}
+
+// ToSign constructs a VoteExtensionToSign from a VoteExtenstion
+func (ext VoteExtension) ToSign() VoteExtensionToSign {
+	return VoteExtensionToSign{
+		AppDataToSign: ext.AppDataToSign,
+	}
+}
+
+// BytesPacked returns a bytes-packed representation for
+// debugging and human identification. This function should
+// not be used for any logical operations.
+func (ext VoteExtension) BytesPacked() []byte {
+	res := make([]byte, len(ext.AppDataToSign)+len(ext.AppDataSelfAuthenticating))
+	copy(res[:len(ext.AppDataToSign)], ext.AppDataToSign)
+	copy(res[len(ext.AppDataToSign):], ext.AppDataSelfAuthenticating)
+	return res
+}
+
 // Vote represents a prevote, precommit, or commit vote from validators for
 // consensus.
 type Vote struct {
@@ -56,6 +103,7 @@ type Vote struct {
 	ValidatorAddress Address               `json:"validator_address"`
 	ValidatorIndex   int32                 `json:"validator_index"`
 	Signature        []byte                `json:"signature"`
+	VoteExtension    VoteExtension         `json:"vote_extension"`
 }
 
 // CommitSig converts the Vote to a CommitSig.
@@ -79,6 +127,7 @@ func (vote *Vote) CommitSig() CommitSig {
 		ValidatorAddress: vote.ValidatorAddress,
 		Timestamp:        vote.Timestamp,
 		Signature:        vote.Signature,
+		VoteExtension:    vote.VoteExtension.ToSign(),
 	}
 }
 
@@ -102,6 +151,7 @@ func VoteSignBytes(chainID string, vote *tmproto.Vote) []byte {
 
 func (vote *Vote) Copy() *Vote {
 	voteCopy := *vote
+	voteCopy.VoteExtension = vote.VoteExtension.Copy()
 	return &voteCopy
 }
 
@@ -115,7 +165,8 @@ func (vote *Vote) Copy() *Vote {
 // 6. type string
 // 7. first 6 bytes of block hash
 // 8. first 6 bytes of signature
-// 9. timestamp
+// 9. first 6 bytes of vote extension
+// 10. timestamp
 func (vote *Vote) String() string {
 	if vote == nil {
 		return nilVoteStr
@@ -131,7 +182,7 @@ func (vote *Vote) String() string {
 		panic("Unknown vote type")
 	}
 
-	return fmt.Sprintf("Vote{%v:%X %v/%02d/%v(%v) %X %X @ %s}",
+	return fmt.Sprintf("Vote{%v:%X %v/%02d/%v(%v) %X %X %X @ %s}",
 		vote.ValidatorIndex,
 		tmbytes.Fingerprint(vote.ValidatorAddress),
 		vote.Height,
@@ -140,6 +191,7 @@ func (vote *Vote) String() string {
 		typeString,
 		tmbytes.Fingerprint(vote.BlockID.Hash),
 		tmbytes.Fingerprint(vote.Signature),
+		tmbytes.Fingerprint(vote.VoteExtension.BytesPacked()),
 		CanonicalTime(vote.Timestamp),
 	)
 }
@@ -198,9 +250,42 @@ func (vote *Vote) ValidateBasic() error {
 		return fmt.Errorf("signature is too big (max: %d)", MaxSignatureSize)
 	}
 
+	// XXX: add length verification for vote extension?
+
 	return nil
 }
 
+func (ext VoteExtension) Copy() VoteExtension {
+	res := VoteExtension{
+		AppDataToSign:             make([]byte, len(ext.AppDataToSign)),
+		AppDataSelfAuthenticating: make([]byte, len(ext.AppDataSelfAuthenticating)),
+	}
+	copy(res.AppDataToSign, ext.AppDataToSign)
+	copy(res.AppDataSelfAuthenticating, ext.AppDataSelfAuthenticating)
+	return res
+}
+
+func (ext VoteExtension) IsEmpty() bool {
+	if len(ext.AppDataToSign) != 0 {
+		return false
+	}
+	if len(ext.AppDataSelfAuthenticating) != 0 {
+		return false
+	}
+	return true
+}
+
+func (ext VoteExtension) ToProto() *tmproto.VoteExtension {
+	if ext.IsEmpty() {
+		return nil
+	}
+
+	return &tmproto.VoteExtension{
+		AppDataToSign:             ext.AppDataToSign,
+		AppDataSelfAuthenticating: ext.AppDataSelfAuthenticating,
+	}
+}
+
 // ToProto converts the handwritten type to proto generated type
 // return type, nil if everything converts safely, otherwise nil, error
 func (vote *Vote) ToProto() *tmproto.Vote {
@@ -217,7 +302,17 @@ func (vote *Vote) ToProto() *tmproto.Vote {
 		ValidatorAddress: vote.ValidatorAddress,
 		ValidatorIndex:   vote.ValidatorIndex,
 		Signature:        vote.Signature,
+		VoteExtension:    vote.VoteExtension.ToProto(),
+	}
+}
+
+func VoteExtensionFromProto(pext *tmproto.VoteExtension) VoteExtension {
+	ext := VoteExtension{}
+	if pext != nil {
+		ext.AppDataToSign = pext.AppDataToSign
+		ext.AppDataSelfAuthenticating = pext.AppDataSelfAuthenticating
 	}
+	return ext
 }
 
 // FromProto converts a proto generetad type to a handwritten type
@@ -241,6 +336,7 @@ func VoteFromProto(pv *tmproto.Vote) (*Vote, error) {
 	vote.ValidatorAddress = pv.ValidatorAddress
 	vote.ValidatorIndex = pv.ValidatorIndex
 	vote.Signature = pv.Signature
+	vote.VoteExtension = VoteExtensionFromProto(pv.VoteExtension)
 
 	return vote, vote.ValidateBasic()
 }

types/vote_test.go

@@ -128,6 +128,33 @@ func TestVoteSignBytesTestVectors(t *testing.T) {
 				0x32,
 				0xd, 0x74, 0x65, 0x73, 0x74, 0x5f, 0x63, 0x68, 0x61, 0x69, 0x6e, 0x5f, 0x69, 0x64}, // chainID
 		},
+		// containing vote extension
+		5: {
+			"test_chain_id", &Vote{Height: 1, Round: 1, VoteExtension: VoteExtension{
+				AppDataToSign:             []byte("signed"),
+				AppDataSelfAuthenticating: []byte("auth"),
+			}},
+			[]byte{
+				0x38,                                   // length
+				0x11,                                   // (field_number << 3) | wire_type
+				0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, // height
+				0x19,                                   // (field_number << 3) | wire_type
+				0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, // round
+				// remaning fields:
+				0x2a,                                                                // (field_number << 3) | wire_type
+				0xb, 0x8, 0x80, 0x92, 0xb8, 0xc3, 0x98, 0xfe, 0xff, 0xff, 0xff, 0x1, // timestamp
+				// (field_number << 3) | wire_type
+				0x32,
+				0xd, 0x74, 0x65, 0x73, 0x74, 0x5f, 0x63, 0x68, 0x61, 0x69, 0x6e, 0x5f, 0x69, 0x64, // chainID
+				// (field_number << 3) | wire_type
+				0x3a,
+				0x8,                                // length
+				0xa,                                // (field_number << 3) | wire_type
+				0x6,                                // length
+				0x73, 0x69, 0x67, 0x6e, 0x65, 0x64, // AppDataSigned
+				// SelfAuthenticating data is excluded on signing
+			}, // chainID
+		},
 	}
 	for i, tc := range tests {
 		v := tc.vote.ToProto()
@@ -226,13 +253,13 @@ func TestVoteVerify(t *testing.T) {
 
 func TestVoteString(t *testing.T) {
 	str := examplePrecommit(t).String()
-	expected := `Vote{56789:6AF1F4111082 12345/02/SIGNED_MSG_TYPE_PRECOMMIT(Precommit) 8B01023386C3 000000000000 @ 2017-12-25T03:00:01.234Z}`
+	expected := `Vote{56789:6AF1F4111082 12345/02/SIGNED_MSG_TYPE_PRECOMMIT(Precommit) 8B01023386C3 000000000000 000000000000 @ 2017-12-25T03:00:01.234Z}` //nolint:lll //ignore line length for tests
 	if str != expected {
 		t.Errorf("got unexpected string for Vote. Expected:\n%v\nGot:\n%v", expected, str)
 	}
 
 	str2 := examplePrevote(t).String()
-	expected = `Vote{56789:6AF1F4111082 12345/02/SIGNED_MSG_TYPE_PREVOTE(Prevote) 8B01023386C3 000000000000 @ 2017-12-25T03:00:01.234Z}`
+	expected = `Vote{56789:6AF1F4111082 12345/02/SIGNED_MSG_TYPE_PREVOTE(Prevote) 8B01023386C3 000000000000 000000000000 @ 2017-12-25T03:00:01.234Z}` //nolint:lll //ignore line length for tests
 	if str2 != expected {
 		t.Errorf("got unexpected string for Vote. Expected:\n%v\nGot:\n%v", expected, str2)
 	}