From cea059e9dd9b290952bcd333221d705ae2cebccf Mon Sep 17 00:00:00 2001
From: terrafrost <terrafrost@php.net>
Date: Wed, 20 Jan 2016 10:09:06 -0600
Subject: [PATCH] Crypt/Base: updates to IV handling per Joey3000

---
 phpseclib/Crypt/Base.php | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/phpseclib/Crypt/Base.php b/phpseclib/Crypt/Base.php
index 4c708a84..63f2a5e4 100644
--- a/phpseclib/Crypt/Base.php
+++ b/phpseclib/Crypt/Base.php
@@ -500,10 +500,9 @@ abstract class Base
     }
 
     /**
-     * Sets the initialization vector. (optional)
+     * Sets the initialization vector.
      *
-     * SetIV is not required when self::MODE_ECB (or ie for AES: \phpseclib\Crypt\AES::MODE_ECB) is being used.  If not explicitly set, it'll be assumed
-     * to be all zero's.
+     * setIV() is not required when self::MODE_ECB (or ie for AES: \phpseclib\Crypt\AES::MODE_ECB) is being used.
      *
      * @access public
      * @param string $iv
@@ -511,8 +510,10 @@ abstract class Base
      */
     function setIV($iv)
     {
-        if ($this->mode == self::MODE_ECB) {
-            return;
+        switch ($this->mode) {
+            case self::MODE_ECB:
+            case self::MODE_STREAM:
+                return;
         }
 
         $this->iv = $iv;