From cce21f077fb73ab9eb511ae6d7ae31e3f77fae43 Mon Sep 17 00:00:00 2001
From: Bastien Miclo <kylekatarnls@protonmail.com>
Date: Thu, 7 Jan 2021 22:05:17 +0100
Subject: [PATCH] Allow to pass end date as DateTime

---
 phpseclib/File/X509.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/phpseclib/File/X509.php b/phpseclib/File/X509.php
index 874bcb11..ba6a0481 100644
--- a/phpseclib/File/X509.php
+++ b/phpseclib/File/X509.php
@@ -3061,7 +3061,7 @@ class X509
 
           -- http://tools.ietf.org/html/rfc5280#section-4.1.2.5
         */
-        if (strtolower($date) == 'lifetime') {
+        if (is_string($date) && strtolower($date) === 'lifetime') {
             $temp = '99991231235959Z';
             $temp = chr(ASN1::TYPE_GENERALIZED_TIME) . ASN1::encodeLength(strlen($temp)) . $temp;
             $this->endDate = new Element($temp);