From adc69caa51bcb813b305dc36a376c61a633111d5 Mon Sep 17 00:00:00 2001
From: Paul Schaub <vanitasvitae@fsfe.org>
Date: Sun, 15 Aug 2021 15:40:04 +0200
Subject: [PATCH] ImplementationFactory: Avoid accessing subclass in parent
 class initialization

---
 .../org/pgpainless/implementation/ImplementationFactory.java | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/pgpainless-core/src/main/java/org/pgpainless/implementation/ImplementationFactory.java b/pgpainless-core/src/main/java/org/pgpainless/implementation/ImplementationFactory.java
index 575a7f36..eadc0eed 100644
--- a/pgpainless-core/src/main/java/org/pgpainless/implementation/ImplementationFactory.java
+++ b/pgpainless-core/src/main/java/org/pgpainless/implementation/ImplementationFactory.java
@@ -42,13 +42,16 @@ import org.pgpainless.util.Passphrase;
 
 public abstract class ImplementationFactory {
 
-    private static ImplementationFactory FACTORY_IMPLEMENTATION = new BcImplementationFactory();
+    private static ImplementationFactory FACTORY_IMPLEMENTATION;
 
     public static void setFactoryImplementation(ImplementationFactory implementation) {
         FACTORY_IMPLEMENTATION = implementation;
     }
 
     public static ImplementationFactory getInstance() {
+        if (FACTORY_IMPLEMENTATION == null) {
+            FACTORY_IMPLEMENTATION = new BcImplementationFactory();
+        }
         return FACTORY_IMPLEMENTATION;
     }