build: update deps

.github/workflows/go.yml

@@ -0,0 +1,32 @@
+name: Build and Test
+on: [push, pull_request]
+jobs:
+  build:
+    name: Go CI
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        go: [1.13, 1.14]
+    steps:
+      - name: Set up Go
+        uses: actions/setup-go@v1
+        with:
+          go-version: ${{ matrix.go }}
+      - name: Check out source
+        uses: actions/checkout@v1
+      - name: Install Linters
+        run: "curl -sfL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | sh -s -- -b $(go env GOPATH)/bin v1.23.6"
+      - name: Build
+        env:
+          GO111MODULE: "on"
+        run: go build ./...
+      - name: Test
+        env:
+          GO111MODULE: "on"
+        run: go test ./...
+      - name: Lint
+        env:
+          GO111MODULE: "on"
+        run: |
+          export PATH=${PATH}:$(go env GOPATH)/bin
+          golangci-lint run --disable-all --deadline=10m --enable=gofmt --enable=gosimple --enable=unconvert --enable=ineffassign --enable=govet

cmd/dcrtumble/config.go

@@ -209,7 +209,7 @@ func loadConfig() (*config, []string, error) {
 	// Multiple networks can't be selected simultaneously.
 	numNets := 0
 	if cfg.TestNet {
-		activeNet = &netparams.TestNet2Params
+		activeNet = &netparams.TestNet3Params
 		numNets++
 	}
 	if cfg.SimNet {

cmd/dcrtumble/puzzles.go

@@ -13,8 +13,8 @@ import (
 	"math/big"
 	mrand "math/rand"
 
-	"github.com/decred/dcrd/chaincfg/chainec"
 	"github.com/decred/dcrd/chaincfg/chainhash"
+	"github.com/decred/dcrd/dcrec/secp256k1/v3"
 	"github.com/decred/tumblebit/puzzle"
 	"github.com/decred/tumblebit/shuffle"
 )
@@ -259,7 +259,7 @@ func validatePuzzlePromiseResponse(c *puzzlePromiseChallenge, r *puzzlePromiseRe
 
 	for i, j := range fakeTxList {
 		if !puzzle.ValidatePuzzle(&pkey, r.puzzles[j], r.secrets[i]) {
-			errors.New("obtained secrets didn't verify")
+			return errors.New("obtained secrets didn't verify")
 		}
 		sig, err := puzzle.RevealSolution(r.promises[j], r.secrets[i])
 		if err != nil {
@@ -276,7 +276,7 @@ func validatePuzzlePromiseResponse(c *puzzlePromiseChallenge, r *puzzlePromiseRe
 		realPuzzles[i] = r.puzzles[idx]
 	}
 	if !puzzle.VerifyQuotients(&pkey, r.quotients, realPuzzles) {
-		errors.New("failed to verify quotients")
+		return errors.New("failed to verify quotients")
 	}
 
 	return nil
@@ -324,15 +324,15 @@ out:
 }
 
 func verifySignature(sigBytes []byte, hash []byte, publicKey []byte) error {
-	pubkey, err := chainec.Secp256k1.ParsePubKey(publicKey)
+	pubkey, err := secp256k1.ParsePubKey(publicKey)
 	if err != nil {
 		return err
 	}
-	sig, err := chainec.Secp256k1.ParseSignature(sigBytes)
+	sig, err := secp256k1.ParseSignature(sigBytes)
 	if err != nil {
 		return err
 	}
-	if !chainec.Secp256k1.Verify(pubkey, hash, sig.GetR(), sig.GetS()) {
+	if !sig.Verify(hash, pubkey) {
 		return errors.New("failed to verify the signature")
 	}
 	return nil

cmd/dcrtumble/session.go

@@ -36,7 +36,7 @@ func (tb *Tumbler) NewEscrow(ctx context.Context, w *wallet.Wallet) (*PaymentPuz
 
 	recvAddr, recvPubKey, err := w.GetExtAddress(ctx)
 	if err != nil {
-		fmt.Errorf("Failed to obtain an address for escrow: %v", err)
+		return fmt.Errorf("Failed to obtain an address for escrow: %v", err)
 	}
 
 	escrow, err := tb.SetupEscrow(ctx, &EscrowRequest{

config.go

@@ -16,8 +16,8 @@ import (
 	"sort"
 	"strings"
 
-	"github.com/btcsuite/btclog"
 	"github.com/decred/dcrd/dcrutil"
+	"github.com/decred/slog"
 	"github.com/decred/tumblebit/internal/cfgutil"
 	"github.com/decred/tumblebit/netparams"
 	"github.com/decred/tumblebit/tumbler"
@@ -127,7 +127,7 @@ func cleanAndExpandPath(path string) string {
 
 // validLogLevel returns whether or not logLevel is a valid debug log level.
 func validLogLevel(logLevel string) bool {
-	_, ok := btclog.LevelFromString(logLevel)
+	_, ok := slog.LevelFromString(logLevel)
 	return ok
 }
 
@@ -300,7 +300,7 @@ func loadConfig(ctx context.Context) (*config, []string, error) {
 	// Multiple networks can't be selected simultaneously.
 	numNets := 0
 	if cfg.TestNet {
-		activeNet = &netparams.TestNet2Params
+		activeNet = &netparams.TestNet3Params
 		numNets++
 	}
 	if cfg.SimNet {