From a10f32470b2bd999a21b6584c97908e5bf572c59 Mon Sep 17 00:00:00 2001
From: Brad Murray <brad@beeper.com>
Date: Mon, 14 Apr 2025 17:43:10 -0400
Subject: [PATCH] Require cross signing keys to be present to verify another
 device

---
 crypto/verificationhelper/verificationhelper.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/crypto/verificationhelper/verificationhelper.go b/crypto/verificationhelper/verificationhelper.go
index 550df942..a8a679d3 100644
--- a/crypto/verificationhelper/verificationhelper.go
+++ b/crypto/verificationhelper/verificationhelper.go
@@ -607,6 +607,11 @@ func (vh *VerificationHelper) onVerificationRequest(ctx context.Context, evt *ev
 		return
 	}
 
+	if vh.mach.CrossSigningKeys == nil {
+		log.Warn().Msg("Ignoring verification request as we don't have cross signing keys")
+		return
+	}
+
 	log = log.With().
 		Any("requested_methods", verificationRequest.Methods).
 		Stringer("transaction_id", verificationRequest.TransactionID).