updated deps; updated healthchecks.io integration

vendor/maunium.net/go/mautrix/crypto/backup/megolmbackupkey.go

@@ -0,0 +1,34 @@
+// Copyright (c) 2024 Sumner Evans
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package backup
+
+import (
+	"crypto/ecdh"
+	"crypto/rand"
+)
+
+// MegolmBackupKey is a wrapper around an ECDH X25519 private key that is used
+// to decrypt a megolm key backup.
+type MegolmBackupKey struct {
+	*ecdh.PrivateKey
+}
+
+func NewMegolmBackupKey() (*MegolmBackupKey, error) {
+	key, err := ecdh.X25519().GenerateKey(rand.Reader)
+	if err != nil {
+		return nil, err
+	}
+	return &MegolmBackupKey{key}, nil
+}
+
+func MegolmBackupKeyFromBytes(bytes []byte) (*MegolmBackupKey, error) {
+	key, err := ecdh.X25519().NewPrivateKey(bytes)
+	if err != nil {
+		return nil, err
+	}
+	return &MegolmBackupKey{key}, nil
+}