diff --git a/.travis.yml b/.travis.yml
index b9e3f0a1..9ae12b4a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -19,7 +19,13 @@ env:
 before_install: true
 
 install:
-  - sudo apt-get install parallel
+  - wget http://ftp.gnu.org/gnu/parallel/parallel-20120522.tar.bz2
+  - tar -xvjf parallel*
+  - cd parallel*
+  - ./configure
+  - make
+  - sudo make install
+  - cd ..
   - eval `ssh-agent -s`
   - travis/setup-secure-shell.sh
   - sh -c "if [ '$TRAVIS_PHP_VERSION' != 'hhvm' -a '$TRAVIS_PHP_VERSION' != '7.0' ]; then travis/install-php-extensions.sh; fi"
diff --git a/phpseclib/Crypt/RSA.php b/phpseclib/Crypt/RSA.php
index 5e55917f..ba2a8d83 100644
--- a/phpseclib/Crypt/RSA.php
+++ b/phpseclib/Crypt/RSA.php
@@ -188,7 +188,7 @@ class RSA
     /**
      * PKCS#8 formatted private key
      */
-    const PRIVATE_FORMAT_PKCS8 = 3;
+    const PRIVATE_FORMAT_PKCS8 = 8;
     /**#@-*/
 
     /**#@+
diff --git a/phpseclib/Math/BigInteger.php b/phpseclib/Math/BigInteger.php
index a43a39ac..6befb591 100644
--- a/phpseclib/Math/BigInteger.php
+++ b/phpseclib/Math/BigInteger.php
@@ -812,7 +812,28 @@ class BigInteger
      */
     function __debugInfo()
     {
-        return array('value' => '0x' . $this->toHex(true));
+        $opts = array();
+        switch (MATH_BIGINTEGER_MODE) {
+            case self::MODE_GMP:
+                $engine = 'gmp';
+                break;
+            case self::MODE_BCMATH:
+                $engine = 'bcmath';
+                break;
+            case self::MODE_INTERNAL:
+                $engine = 'internal';
+                $opts[] = PHP_INT_SIZE == 8 ? '64-bit' : '32-bit';
+        }
+        if (MATH_BIGINTEGER_MODE != self::MODE_GMP && defined('MATH_BIGINTEGER_OPENSSL_ENABLED')) {
+            $opts[] = 'OpenSSL';
+        }
+        if (!empty($opts)) {
+            $engine.= ' (' . implode($opts, ', ') . ')';
+        }
+        return array(
+            'value' => '0x' . $this->toHex(true),
+            'engine' => $engine
+        );
     }
 
     /**
diff --git a/phpseclib/Net/SSH2.php b/phpseclib/Net/SSH2.php
index 1fcf1370..0f7c8318 100644
--- a/phpseclib/Net/SSH2.php
+++ b/phpseclib/Net/SSH2.php
@@ -2862,6 +2862,17 @@ class SSH2
         return (bool) ($this->bitmap & self::MASK_CONNECTED);
     }
 
+    /**
+     * Have you successfully been logged in?
+     *
+     * @return bool
+     * @access public
+     */
+    function isAuthenticated()
+    {
+        return (bool) ($this->bitmap & self::MASK_LOGIN);
+    }
+
     /**
      * Gets Binary Packets
      *
diff --git a/tests/Functional/Net/SSH2Test.php b/tests/Functional/Net/SSH2Test.php
index 51373705..4c18abed 100644
--- a/tests/Functional/Net/SSH2Test.php
+++ b/tests/Functional/Net/SSH2Test.php
@@ -34,6 +34,11 @@ class Functional_Net_SSH2Test extends PhpseclibFunctionalTestCase
             'Failed asserting that SSH2 is not connected after construction.'
         );
 
+        $this->assertFalse(
+            $ssh->isAuthenticated(),
+            'Failed asserting that SSH2 is not authenticated after construction.'
+        );
+
         $this->assertNotEmpty(
             $ssh->getServerPublicHostKey(),
             'Failed asserting that a non-empty public host key was fetched.'
@@ -55,6 +60,31 @@ class Functional_Net_SSH2Test extends PhpseclibFunctionalTestCase
     /**
      * @depends testPreLogin
      */
+    public function testBadPassword($ssh)
+    {
+        $username = $this->getEnv('SSH_USERNAME');
+        $password = $this->getEnv('SSH_PASSWORD');
+        $this->assertFalse(
+            $ssh->login($username, 'zzz' . $password),
+            'SSH2 login using password succeeded.'
+        );
+
+        $this->assertTrue(
+            $ssh->isConnected(),
+            'Failed asserting that SSH2 is connected after bad login attempt.'
+        );
+
+        $this->assertFalse(
+            $ssh->isAuthenticated(),
+            'Failed asserting that SSH2 is not authenticated after bad login attempt.'
+        );
+
+        return $ssh;
+    }
+
+    /**
+     * @depends testBadPassword
+     */
     public function testPasswordLogin($ssh)
     {
         $username = $this->getEnv('SSH_USERNAME');
@@ -64,6 +94,11 @@ class Functional_Net_SSH2Test extends PhpseclibFunctionalTestCase
             'SSH2 login using password failed.'
         );
 
+        $this->assertTrue(
+            $ssh->isAuthenticated(),
+            'Failed asserting that SSH2 is authenticated after good login attempt.'
+        );
+
         return $ssh;
     }
 
diff --git a/tests/Unit/Math/BigInteger/TestCase.php b/tests/Unit/Math/BigInteger/TestCase.php
index bb5293b3..f352e7ed 100644
--- a/tests/Unit/Math/BigInteger/TestCase.php
+++ b/tests/Unit/Math/BigInteger/TestCase.php
@@ -355,4 +355,15 @@ abstract class Unit_Math_BigInteger_TestCase extends PhpseclibTestCase
             'Failed asserting that Alice and Bob share the same BigInteger.'
         );
     }
+
+    /**
+     * @requires PHP 5.6
+     */
+    public function testDebugInfo()
+    {
+        $num = $this->getInstance(50);
+        $str = print_r($num, true);
+        $this->assertContains('[value] => 0x32', $str);
+        return $str;
+    }
 }
diff --git a/travis/install-php-extensions.sh b/travis/install-php-extensions.sh
index 2acfdfd7..5244261c 100755
--- a/travis/install-php-extensions.sh
+++ b/travis/install-php-extensions.sh
@@ -21,10 +21,5 @@ function install_php_extension
 }
 
 # runkit
-if [ "$TRAVIS_PHP_VERSION" == "5.6" ]
-then
-    git clone https://github.com/adrianguenter/runkit.git
-else
-    git clone https://github.com/zenovich/runkit.git
-fi
+git clone https://github.com/zenovich/runkit.git
 install_php_extension 'runkit'