fix(GODT-2625): Update bridge pubkey and add option to verify in hasher.

internal/updater/key_default.go

@@ -33,19 +33,19 @@ D8Gp19LnRtmqjVh2rVdr8yc5nAjoNOZwanMwD5vCWPUVELWXubNFBv8hqZMxHZqW
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@@ -152,17 +152,17 @@ cS0BNvA+4Aip2hhFqWJAbUQXCyMaeU2WTWIzy0FQ6SEFFy/RM8O5O1HHsDYjtIic
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-m//Hk8dcT8vncg==
+00IsXQemR6I8Qw==
-=G/D6
+=QiAL
 -----END PGP PUBLIC KEY BLOCK-----`

internal/updater/keyring.go

@@ -0,0 +1,40 @@
+// Copyright (c) 2023 Proton AG
+//
+// This file is part of Proton Mail Bridge.
+//
+// Proton Mail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Proton Mail Bridge 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 General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
+
+package updater
+
+import (
+	"github.com/ProtonMail/gopenpgp/v2/crypto"
+	"github.com/sirupsen/logrus"
+)
+
+func GetDefaultKeyring() (*crypto.KeyRing, error) {
+	l := logrus.WithField("pkg", "updater")
+
+	key, err := crypto.NewKeyFromArmored(DefaultPublicKey)
+	if err != nil {
+		l.WithError(err).Error("Failed to create new verification key")
+		return nil, err
+	}
+
+	kr, err := crypto.NewKeyRing(key)
+	if err != nil {
+		l.WithError(err).Fatal("Failed to create new verification keyring")
+	}
+
+	return kr, nil
+}

internal/versioner/version.go

@@ -74,12 +74,16 @@ func (v *Version) SemVer() *semver.Version {
 
 // VerifyFiles verifies all files in the version directory.
 func (v *Version) VerifyFiles(kr *crypto.KeyRing) error {
-	fileBytes, err := os.ReadFile(filepath.Join(v.path, sumFile)) //nolint:gosec
+	return VerifyUpdateFolder(kr, v.path)
+}
+
+func VerifyUpdateFolder(kr *crypto.KeyRing, path string) error {
+	fileBytes, err := os.ReadFile(filepath.Join(path, sumFile)) //nolint:gosec
 	if err != nil {
 		return err
 	}
 
-	sigBytes, err := os.ReadFile(filepath.Join(v.path, sumFile+".sig")) //nolint:gosec
+	sigBytes, err := os.ReadFile(filepath.Join(path, sumFile+".sig")) //nolint:gosec
 	if err != nil {
 		return err
 	}
@@ -92,7 +96,7 @@ func (v *Version) VerifyFiles(kr *crypto.KeyRing) error {
 		return err
 	}
 
-	sum, err := sum.RecursiveSum(v.path, sumFile)
+	sum, err := sum.RecursiveSum(path, sumFile)
 	if err != nil {
 		return err
 	}

utils/hasher/main.go

@@ -20,6 +20,8 @@ package main
 import (
 	"os"
 
+	"github.com/ProtonMail/proton-bridge/v3/internal/updater"
+	"github.com/ProtonMail/proton-bridge/v3/internal/versioner"
 	"github.com/ProtonMail/proton-bridge/v3/pkg/sum"
 	"github.com/sirupsen/logrus"
 	"github.com/urfave/cli/v2"
@@ -51,12 +53,30 @@ func createApp() *cli.App {
 			Usage:    "The file to save the sum in",
 			Required: true,
 		},
+		&cli.BoolFlag{
+			Name:    "verify",
+			Aliases: []string{"v"},
+			Usage:   "Verify the update folder is properly hashed and signed.",
+		},
 	}
 
 	return app
 }
 
 func computeSum(c *cli.Context) error {
+	if c.Bool("verify") {
+		kr, err := updater.GetDefaultKeyring()
+		if err != nil {
+			logrus.WithError(err).Fatal("Failed to load key before verify")
+		}
+
+		if err := versioner.VerifyUpdateFolder(kr, c.String("root")); err != nil {
+			logrus.WithError(err).Fatal("Failed to verify")
+		}
+
+		logrus.WithField("path", c.String("root")).Info("Signature OK")
+	}
+
 	b, err := sum.RecursiveSum(c.String("root"), c.String("output"))
 	if err != nil {
 		return err