From af0040b813b00448cfb2744cc685177e8281753f Mon Sep 17 00:00:00 2001
From: terrafrost <terrafrost@php.net>
Date: Thu, 5 Jun 2014 08:10:20 -0500
Subject: [PATCH] RSA: PHP4 compat changes

---
 phpseclib/Crypt/RSA.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/phpseclib/Crypt/RSA.php b/phpseclib/Crypt/RSA.php
index 58fba1d6..3a1ddf1e 100644
--- a/phpseclib/Crypt/RSA.php
+++ b/phpseclib/Crypt/RSA.php
@@ -474,6 +474,10 @@ class Crypt_RSA
             }
 
             switch ( !defined('CRYPT_RSA_MODE') ) { // ie. only run this if the above didn't set CRYPT_RSA_MODE already
+                // openssl_pkey_get_details - which is used in the only place Crypt/RSA.php uses OpenSSL - was introduced in PHP 5.2.0
+                case !function_exists('openssl_pkey_get_details'):
+                    define('CRYPT_RSA_MODE', CRYPT_RSA_MODE_INTERNAL);
+                    break;
                 case extension_loaded('openssl') && version_compare(PHP_VERSION, '4.2.0', '>=') && file_exists($this->configFile):
                     // some versions of XAMPP have mismatched versions of OpenSSL which causes it not to work
                     ob_start();