diff --git a/.gitignore b/.gitignore
index 1469fe60..1447b413 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,4 @@
 /vendor
 /composer.phar
+/.idea/
+.gitignore
diff --git a/phpseclib/File/X509.php b/phpseclib/File/X509.php
index e2f98817..d63d71fb 100644
--- a/phpseclib/File/X509.php
+++ b/phpseclib/File/X509.php
@@ -572,7 +572,7 @@ class X509
      * Map extension values from octet string to extension-specific internal
      *   format.
      *
-     * @param array ref $root
+     * @param &array $root
      * @param string $path
      * @access private
      */
@@ -618,7 +618,7 @@ class X509
      * Map extension values from extension-specific internal format to
      *   octet string.
      *
-     * @param array ref $root
+     * @param &array Ref $root
      * @param string $path
      * @access private
      */
@@ -682,7 +682,7 @@ class X509
      * Map attribute values from ANY type to attribute-specific internal
      *   format.
      *
-     * @param array ref $root
+     * @param &array Ref $root
      * @param string $path
      * @access private
      */
@@ -722,7 +722,7 @@ class X509
      * Map attribute values from attribute-specific internal format to
      *   ANY type.
      *
-     * @param array ref $root
+     * @param &array $root Ref
      * @param string $path
      * @access private
      */
@@ -764,7 +764,7 @@ class X509
      * Map DN values from ANY type to DN-specific internal
      *   format.
      *
-     * @param array ref $root
+     * @param &array $root
      * @param string $path
      * @access private
      */
@@ -793,7 +793,7 @@ class X509
      * Map DN values from DN-specific internal format to
      *   ANY type.
      *
-     * @param array ref $root
+     * @param &array $root
      * @param string $path
      * @access private
      */
@@ -1053,6 +1053,7 @@ class X509
      *
      * @param int $date optional
      * @access public
+     * @return boolean
      */
     public function validateDate($date = null)
     {
@@ -2051,7 +2052,7 @@ class X509
      *
      * https://developer.mozilla.org/en-US/docs/HTML/Element/keygen
      *
-     * @param string $csr
+     * @param string $spkac
      * @access public
      * @return mixed
      */
@@ -2119,7 +2120,7 @@ class X509
     /**
      * Save a SPKAC CSR request
      *
-     * @param array $csr
+     * @param array $spkac
      * @param int $format optional
      * @access public
      * @return string
@@ -2808,7 +2809,7 @@ class X509
      * Set Serial Number
      *
      * @param string $serial
-     * @param $base optional
+     * @param $base integer Optional
      * @access public
      */
     public function setSerialNumber($serial, $base = -256)
diff --git a/phpseclib/Math/BigInteger.php b/phpseclib/Math/BigInteger.php
index fb19731e..677b2ff2 100644
--- a/phpseclib/Math/BigInteger.php
+++ b/phpseclib/Math/BigInteger.php
@@ -120,7 +120,7 @@ class BigInteger implements \Serializable
      * If the second parameter - $base - is negative, then it will be assumed that the number's are encoded using
      * two's compliment.  The sole exception to this is -10, which is treated the same as 10 is.
      *
-     * @param $x base-10 number or base-$base number if $base set.
+     * @param $x integer|BigInteger\Engines\Engine Base-10 number or base-$base number if $base set.
      * @param int $base
      * @return \phpseclib\Math\BigInteger
      */
diff --git a/phpseclib/Math/BigInteger/Engines/BCMath.php b/phpseclib/Math/BigInteger/Engines/BCMath.php
index fee7b212..3d2ab07d 100644
--- a/phpseclib/Math/BigInteger/Engines/BCMath.php
+++ b/phpseclib/Math/BigInteger/Engines/BCMath.php
@@ -100,7 +100,7 @@ class BCMath extends Engine
     /**
      * Default constructor
      *
-     * @param $x base-10 number or base-$base number if $base set.
+     * @param $x integer Base-10 number or base-$base number if $base set.
      * @param int $base
      * @see parent::__construct()
      * @return \phpseclib\Math\BigInteger\Engines\BCMath
@@ -549,7 +549,7 @@ class BCMath extends Engine
      * BigInteger::randomRange($min, $max)
      * BigInteger::randomRange($max, $min)
      *
-     * @return \phpseclib\Math\BigInteger\Engines\Engine\BCMath
+     * @return \phpseclib\Math\BigInteger\Engines\BCMath
      */
     public static function randomRange(BCMath $min, BCMath $max)
     {
diff --git a/phpseclib/Math/BigInteger/Engines/Engine.php b/phpseclib/Math/BigInteger/Engines/Engine.php
index 9f3dc497..5d2dcaa8 100644
--- a/phpseclib/Math/BigInteger/Engines/Engine.php
+++ b/phpseclib/Math/BigInteger/Engines/Engine.php
@@ -59,7 +59,7 @@ abstract class Engine implements \Serializable
     /**
      * Default constructor
      *
-     * @param $x base-10 number or base-$base number if $base set.
+     * @param $x integer Base-10 number or base-$base number if $base set.
      * @param int $base
      * @return \phpseclib\Math\BigInteger\Engines\Engine
      */
diff --git a/phpseclib/Math/BigInteger/Engines/GMP.php b/phpseclib/Math/BigInteger/Engines/GMP.php
index 9a406a27..9f13f254 100644
--- a/phpseclib/Math/BigInteger/Engines/GMP.php
+++ b/phpseclib/Math/BigInteger/Engines/GMP.php
@@ -102,7 +102,7 @@ class GMP extends Engine
     /**
      * Default constructor
      *
-     * @param $x base-10 number or base-$base number if $base set.
+     * @param $x integer Base-10 number or base-$base number if $base set.
      * @param int $base
      * @see parent::__construct()
      * @return \phpseclib\Math\BigInteger\Engines\GMP
@@ -511,7 +511,7 @@ class GMP extends Engine
      * BigInteger::randomRange($min, $max)
      * BigInteger::randomRange($max, $min)
      *
-     * @return \phpseclib\Math\BigInteger\Engines\Engine\GMP
+     * @return \phpseclib\Math\BigInteger\Engines\GMP
      */
     public static function randomRange(GMP $min, GMP $max)
     {
diff --git a/phpseclib/Math/BigInteger/Engines/PHP.php b/phpseclib/Math/BigInteger/Engines/PHP.php
index bee28778..3ea67453 100644
--- a/phpseclib/Math/BigInteger/Engines/PHP.php
+++ b/phpseclib/Math/BigInteger/Engines/PHP.php
@@ -74,7 +74,7 @@ abstract class PHP extends Engine
     /**
      * Default constructor
      *
-     * @param $x base-10 number or base-$base number if $base set.
+     * @param $x integer Base-10 number or base-$base number if $base set.
      * @param int $base
      * @see parent::__construct()
      * @return \phpseclib\Math\BigInteger\Engines\PHP
@@ -524,7 +524,7 @@ abstract class PHP extends Engine
      * same.  If the remainder would be negative, the "common residue" is equal to the sum of the remainder
      * and the divisor (basically, the "common residue" is the first positive modulo).
      *
-     * @param \phpseclib\Math\BigInteger\PHP $y
+     * @param \phpseclib\Math\BigInteger\engines\PHP $y
      * @return array
      * @internal This function is based off of {@link http://www.cacr.math.uwaterloo.ca/hac/about/chap14.pdf#page=9 HAC 14.20}.
      */
diff --git a/phpseclib/Math/BigInteger/Engines/PHP/Montgomery.php b/phpseclib/Math/BigInteger/Engines/PHP/Montgomery.php
index cdbf23a1..e388e6b2 100644
--- a/phpseclib/Math/BigInteger/Engines/PHP/Montgomery.php
+++ b/phpseclib/Math/BigInteger/Engines/PHP/Montgomery.php
@@ -42,11 +42,11 @@ abstract class Montgomery extends Base
     /**
      * Performs modular exponentiation.
      *
-     * @param \phpseclib\Math\BigInteger\Engine $x
-     * @param \phpseclib\Math\BigInteger\Engine $e
-     * @param \phpseclib\Math\BigInteger\Engine $n
+     * @param \phpseclib\Math\BigInteger\Engines\Engine $x
+     * @param \phpseclib\Math\BigInteger\Engines\Engine $e
+     * @param \phpseclib\Math\BigInteger\Engines\Engine $n
      * @param string $class
-     * @return \phpseclib\Math\BigInteger\Engine|Engine
+     * @return \phpseclib\Math\BigInteger\Engines\Engine
      */
     protected static function slidingWindow(Engine $x, Engine $e, Engine $n, $class)
     {
diff --git a/phpseclib/Math/BigInteger/Engines/PHP32.php b/phpseclib/Math/BigInteger/Engines/PHP32.php
index b205a9c1..17e77a2b 100644
--- a/phpseclib/Math/BigInteger/Engines/PHP32.php
+++ b/phpseclib/Math/BigInteger/Engines/PHP32.php
@@ -294,7 +294,7 @@ class PHP32 extends PHP
      * BigInteger::randomRange($min, $max)
      * BigInteger::randomRange($max, $min)
      *
-     * @return \phpseclib\Math\BigInteger\Engines\Engine\PHP32
+     * @return \phpseclib\Math\BigInteger\Engines\PHP32
      */
     public static function randomRange(PHP32 $min, PHP32 $max)
     {
diff --git a/phpseclib/Math/BigInteger/Engines/PHP64.php b/phpseclib/Math/BigInteger/Engines/PHP64.php
index c3f7e84d..6c617100 100644
--- a/phpseclib/Math/BigInteger/Engines/PHP64.php
+++ b/phpseclib/Math/BigInteger/Engines/PHP64.php
@@ -294,7 +294,7 @@ class PHP64 extends PHP
      * BigInteger::randomRange($min, $max)
      * BigInteger::randomRange($max, $min)
      *
-     * @return \phpseclib\Math\BigInteger\Engines\Engine\PHP64
+     * @return \phpseclib\Math\BigInteger\Engines\PHP64
      */
     public static function randomRange(PHP64 $min, PHP64 $max)
     {
diff --git a/phpseclib/Net/SFTP.php b/phpseclib/Net/SFTP.php
index 63496e69..338b1b79 100644
--- a/phpseclib/Net/SFTP.php
+++ b/phpseclib/Net/SFTP.php
@@ -3084,7 +3084,7 @@ class SFTP extends SSH2
      *
      * @param int $reason
      * @return bool
-     * @access private
+     * @access protected
      */
     protected function disconnect_helper($reason)
     {
diff --git a/phpseclib/Net/SSH2.php b/phpseclib/Net/SSH2.php
index 332b324b..e1e2f48d 100644
--- a/phpseclib/Net/SSH2.php
+++ b/phpseclib/Net/SSH2.php
@@ -868,7 +868,7 @@ class SSH2
     /**
      * A System_SSH_Agent for use in the SSH2 Agent Forwarding scenario
      *
-     * @var System_SSH_Agent
+     * @var \phpseclib\System\Ssh\Agent
      * @access private
      */
     private $agent;
@@ -3827,7 +3827,7 @@ class SSH2
      *
      * @param int $reason
      * @return bool
-     * @access private
+     * @access protected
      */
     protected function disconnect_helper($reason)
     {
@@ -3848,7 +3848,7 @@ class SSH2
      * If any of the constants that would be defined already exists, none of the constants will be defined.
      *
      * @param array $array
-     * @access private
+     * @access protected
      */
     protected function define_array()
     {
diff --git a/phpseclib/System/SSH/Agent.php b/phpseclib/System/SSH/Agent.php
index 29182d10..64966716 100644
--- a/phpseclib/System/SSH/Agent.php
+++ b/phpseclib/System/SSH/Agent.php
@@ -219,7 +219,7 @@ class Agent
      * Signal that agent forwarding should
      * be requested when a channel is opened
      *
-     * @param Net_SSH2 $ssh
+     * @param \phpseclib\Net\SSH2 $ssh
      * @return bool
      * @access public
      */
@@ -233,7 +233,7 @@ class Agent
     /**
      * Request agent forwarding of remote server
      *
-     * @param Net_SSH2 $ssh
+     * @param \phpseclib\Net\SSH2 $ssh
      * @return bool
      * @access private
      */
@@ -276,7 +276,7 @@ class Agent
      * open to give the SSH Agent an opportunity
      * to take further action. i.e. request agent forwarding
      *
-     * @param Net_SSH2 $ssh
+     * @param \phpseclib\Net\SSH2 $ssh
      * @access private
      */
     private function on_channel_open($ssh)
@@ -290,7 +290,7 @@ class Agent
      * Forward data to SSH Agent and return data reply
      *
      * @param string $data
-     * @return data from SSH Agent
+     * @return string Data from SSH Agent
      * @throws \RuntimeException on connection errors
      * @access private
      */
diff --git a/tests/Unit/Crypt/BlowfishTest.php b/tests/Unit/Crypt/BlowfishTest.php
index 95a182be..773173cf 100644
--- a/tests/Unit/Crypt/BlowfishTest.php
+++ b/tests/Unit/Crypt/BlowfishTest.php
@@ -77,7 +77,15 @@ class Unit_Crypt_BlowfishTest extends PhpseclibTestCase
         $bf = new Blowfish('cbc');
         $bf->setKey($key);
         $bf->setIV(str_repeat("\0", $bf->getBlockLength() >> 3));
-        if (!$bf->isValidEngine($engine)) {
+
+        $engines = array(
+            'PHP'=>\phpseclib\Crypt\Common\SymmetricKey::ENGINE_INTERNAL,
+            'Eval'=>\phpseclib\Crypt\Common\SymmetricKey::ENGINE_EVAL,
+            'mcrypt'=>\phpseclib\Crypt\Common\SymmetricKey::ENGINE_MCRYPT,
+            'OpenSSL'=>\phpseclib\Crypt\Common\SymmetricKey::ENGINE_OPENSSL,
+        );
+
+        if (!$bf->isValidEngine($engines[$engine])) {
             self::markTestSkipped("Unable to initialize $engine engine");
         }
         $bf->setPreferredEngine($engine);