From 0cf8f705445ca0e7650af43547f253a5cdcdd67b Mon Sep 17 00:00:00 2001
From: Enginex0 <enginex0@users.noreply.github.com>
Date: Mon, 2 Feb 2026 18:43:41 +0100
Subject: [PATCH] fix(pki): strip HTML comments from PEM blocks before parsing

Some upstream keybox sources inject HTML comments inside PEM
certificate blocks. BouncyCastle's PEMParser chokes on these
non-base64 lines, silently failing to load the keybox.

Filter lines starting with <!-- in trimLines() before the content
reaches the PEM parser.
---
 .../main/java/org/matrix/TEESimulator/util/Extensions.kt    | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/app/src/main/java/org/matrix/TEESimulator/util/Extensions.kt b/app/src/main/java/org/matrix/TEESimulator/util/Extensions.kt
index 9feb8c8..cb59624 100644
--- a/app/src/main/java/org/matrix/TEESimulator/util/Extensions.kt
+++ b/app/src/main/java/org/matrix/TEESimulator/util/Extensions.kt
@@ -6,7 +6,11 @@ package org.matrix.TEESimulator.util
  *
  * @return A new string with each line individually trimmed.
  */
-fun String.trimLines(): String = this.trim().lines().joinToString("\n") { it.trim() }
+fun String.trimLines(): String =
+    this.trim()
+        .lines()
+        .filter { !it.trim().startsWith("<!--") }
+        .joinToString("\n") { it.trim() }
 
 /**
  * Converts a ByteArray to its hexadecimal string representation.