From 57899b856fbd87d27e0a536e611eea89d644242f Mon Sep 17 00:00:00 2001
From: Elliott Balsley <3991046+llamafilm@users.noreply.github.com>
Date: Sat, 25 Apr 2026 15:32:47 -0700
Subject: [PATCH] add PKI_DECRYPT_FAILED error

---
 meshtastic/mesh.proto | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/meshtastic/mesh.proto b/meshtastic/mesh.proto
index b09a15b0a..1bff82ceb 100644
--- a/meshtastic/mesh.proto
+++ b/meshtastic/mesh.proto
@@ -1167,6 +1167,13 @@ message Routing {
      * This is different from PKI_UNKNOWN_PUBKEY which indicates a failure upon receiving a packet
      */
     PKI_SEND_FAIL_PUBLIC_KEY = 39;
+
+    /*
+     * PKI packet could not be decrypted, even though the sender's public key is in NodeDB.
+     * Typically happens after the sender rotated keys; may also happen due to RF corruption or
+     * builds without PKI support (MESHTASTIC_EXCLUDE_PKI).
+     */
+    PKI_DECRYPT_FAILED = 40;
   }
 
   oneof variant {