From 402b7e81760336a1d3f2d9162f49dfb54e6bed0d Mon Sep 17 00:00:00 2001
From: terrafrost <terrafrost@php.net>
Date: Sat, 5 Oct 2013 21:30:57 -0500
Subject: [PATCH] RSA: if setPublicKey is called unneccessarily return false

---
 phpseclib/Crypt/RSA.php | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/phpseclib/Crypt/RSA.php b/phpseclib/Crypt/RSA.php
index 50642eb7..106f9cae 100644
--- a/phpseclib/Crypt/RSA.php
+++ b/phpseclib/Crypt/RSA.php
@@ -1474,6 +1474,11 @@ class Crypt_RSA {
      */
     function setPublicKey($key = false, $type = false)
     {
+        // if a public key has already been loaded return false
+        if (isset($this->publicExponent)) {
+            return false;
+        }
+
         if ($key === false && !empty($this->modulus)) {
             $this->publicExponent = $this->exponent;
             return true;