From 301aad47644f0ac8b622fc627e8a00d2b8a4be19 Mon Sep 17 00:00:00 2001
From: terrafrost <terrafrost@gmail.com>
Date: Sun, 20 Mar 2022 11:30:24 -0500
Subject: [PATCH] RSA: conditionally call useBestEngine() when getEngine() is
 called

---
 phpseclib/Crypt/RSA.php | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/phpseclib/Crypt/RSA.php b/phpseclib/Crypt/RSA.php
index c102efde..b3cb0ba6 100644
--- a/phpseclib/Crypt/RSA.php
+++ b/phpseclib/Crypt/RSA.php
@@ -935,6 +935,9 @@ abstract class RSA extends AsymmetricKey
      */
     public function getEngine()
     {
+        if (!isset(self::$engines['PHP'])) {
+            self::useBestEngine();
+        }
         return self::$engines['OpenSSL'] && self::$defaultExponent == 65537 ?
             'OpenSSL' :
             'PHP';