From 5a343a39d374218b0c2f33d17c1129594beca9da Mon Sep 17 00:00:00 2001
From: Paul Schaub <vanitasvitae@fsfe.org>
Date: Thu, 30 Nov 2023 20:13:22 +0100
Subject: [PATCH] Backport 97455aa2563b3813376f13b621c0aea1a7efec47

Add test for handling key with unknown signature subpacket
---
 ...WithUnsupportedSignatureSubpacketTest.java | 43 +++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 pgpainless-core/src/test/java/org/pgpainless/key/KeyWithUnsupportedSignatureSubpacketTest.java

diff --git a/pgpainless-core/src/test/java/org/pgpainless/key/KeyWithUnsupportedSignatureSubpacketTest.java b/pgpainless-core/src/test/java/org/pgpainless/key/KeyWithUnsupportedSignatureSubpacketTest.java
new file mode 100644
index 00000000..82cb8d2a
--- /dev/null
+++ b/pgpainless-core/src/test/java/org/pgpainless/key/KeyWithUnsupportedSignatureSubpacketTest.java
@@ -0,0 +1,43 @@
+// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
+//
+// SPDX-License-Identifier: Apache-2.0
+
+package org.pgpainless.key;
+
+import org.bouncycastle.openpgp.PGPException;
+import org.bouncycastle.openpgp.PGPSecretKeyRing;
+import org.junit.jupiter.api.Test;
+import org.pgpainless.PGPainless;
+import org.pgpainless.key.protection.SecretKeyRingProtector;
+
+import java.io.IOException;
+import java.util.Date;
+
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+
+public class KeyWithUnsupportedSignatureSubpacketTest {
+
+    @Test
+    public void testCanSetExpirationDateOnKeyContainingUnknownSubpacket34() throws IOException, PGPException {
+        String KEY = "-----BEGIN PGP PRIVATE KEY BLOCK-----\n" +
+                "\n" +
+                "lFgEZWiyNhYJKwYBBAHaRw8BAQdA71QipJ0CAqOEqQWjuoQE4E7LarKSrNDwE/6K\n" +
+                "bQNrCLwAAQCtJ8kVG2AmbDfdVtr/7Ag+yBh0oCvjRvyUCOyIbruOeg+6tClTdWJw\n" +
+                "YWNrZXQzNCBUZXN0S2V5IDx0ZXN0QHBncGFpbmxlc3Mub3JnPoiTBBMWCgA7FiEE\n" +
+                "zhy5yrnZYU/iBza4G03SQVuWqx0FAmVosjYCGwMFCwkIBwICIgIGFQoJCAsCBBYC\n" +
+                "AwECHgcCF4AACgkQG03SQVuWqx1UGgD+IYLeh9t5eJCEnzueuOTYnTnrzyhnLgm9\n" +
+                "dw5qwMXU8VQA/28GCOb7610hyjiBbrrcshkWAKuMwp8bUSz5FOeS5cQEnF0EZWiy\n" +
+                "NhIKKwYBBAGXVQEFAQEHQK99ClLDYtn0I2b6Y26NhaL0RWcrNoI/ci0xgXEK2L0Y\n" +
+                "AwEIBwAA/06qciQHI0v7MP2LMWm/ZuTJwzlPqV8VsBhrDMyUPUD4D52IeAQYFgoA\n" +
+                "IBYhBM4cucq52WFP4gc2uBtN0kFblqsdBQJlaLI2AhsMAAoJEBtN0kFblqsdRQ0A\n" +
+                "/iUJ/Fp+D2RjZL+aiwByIxPCVvMJ7a28+GQGjg3hsU2BAP474dfOOVZiTDLWWxsB\n" +
+                "wxfzOAQxXDhgR9xd/Lk3MNJxDg==\n" +
+                "=YAt0\n" +
+                "-----END PGP PRIVATE KEY BLOCK-----";
+        PGPSecretKeyRing secretKeys = PGPainless.readKeyRing().secretKeyRing(KEY);
+        assertNotNull(secretKeys);
+        PGPainless.modifyKeyRing(secretKeys)
+                .setExpirationDate(new Date(), SecretKeyRingProtector.unprotectedKeys())
+                .done();
+    }
+}