From 4cc8054cff926022e4d94da249096af675325d6c Mon Sep 17 00:00:00 2001
From: Paul Schaub <vanitasvitae@fsfe.org>
Date: Thu, 6 Jul 2023 13:08:56 +0200
Subject: [PATCH] KeyRingReader.readPublicKeyRingCollection: Handle secret keys
 as public keys

---
 .../java/org/pgpainless/key/parsing/KeyRingReader.java     | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/pgpainless-core/src/main/java/org/pgpainless/key/parsing/KeyRingReader.java b/pgpainless-core/src/main/java/org/pgpainless/key/parsing/KeyRingReader.java
index 6d67793b..7a06f955 100644
--- a/pgpainless-core/src/main/java/org/pgpainless/key/parsing/KeyRingReader.java
+++ b/pgpainless-core/src/main/java/org/pgpainless/key/parsing/KeyRingReader.java
@@ -23,6 +23,7 @@ import org.bouncycastle.openpgp.PGPPublicKeyRingCollection;
 import org.bouncycastle.openpgp.PGPSecretKeyRing;
 import org.bouncycastle.openpgp.PGPSecretKeyRingCollection;
 import org.bouncycastle.util.io.Streams;
+import org.pgpainless.PGPainless;
 import org.pgpainless.implementation.ImplementationFactory;
 import org.pgpainless.key.collection.PGPKeyRingCollection;
 import org.pgpainless.util.ArmorUtils;
@@ -295,6 +296,12 @@ public class KeyRingReader {
             }
             if (next instanceof PGPPublicKeyRing) {
                 rings.add((PGPPublicKeyRing) next);
+                continue;
+            }
+            // Parse public keys from secret keys
+            if (next instanceof PGPSecretKeyRing) {
+                rings.add(PGPainless.extractCertificate((PGPSecretKeyRing) next));
+                continue;
             }
             if (next instanceof PGPPublicKeyRingCollection) {
                 PGPPublicKeyRingCollection collection = (PGPPublicKeyRingCollection) next;