diff --git a/phpseclib/Crypt/RSA.php b/phpseclib/Crypt/RSA.php
index 793eecc7..53f94354 100644
--- a/phpseclib/Crypt/RSA.php
+++ b/phpseclib/Crypt/RSA.php
@@ -515,9 +515,16 @@ class Crypt_RSA
 
                     $versions = array();
                     if (!empty($matches[1])) {
-                       for ($i = 0; $i < count($matches[1]); $i++) {
-                          $versions[$matches[1][$i]] = trim(str_replace('=>', '', strip_tags($matches[2][$i])));
-                       }
+                        for ($i = 0; $i < count($matches[1]); $i++) {
+                            $fullVersion = trim(str_replace('=>', '', strip_tags($matches[2][$i])));
+
+                            // Remove letter part in OpenSSL version
+                            if (!preg_match('/(\d+\.\d+\.\d+)/i', $fullVersion, $m)) {
+                                $versions[$matches[1][$i]] = $fullVersion;
+                            } else {
+                                $versions[$matches[1][$i]] = $m[0];
+                            }
+                        }
                     }
 
                     // it doesn't appear that OpenSSL versions were reported upon until PHP 5.3+
diff --git a/phpseclib/File/ASN1.php b/phpseclib/File/ASN1.php
index a3b91b2e..1d66793a 100644
--- a/phpseclib/File/ASN1.php
+++ b/phpseclib/File/ASN1.php
@@ -347,24 +347,31 @@ class File_ASN1
             case FILE_ASN1_CLASS_APPLICATION:
             case FILE_ASN1_CLASS_PRIVATE:
             case FILE_ASN1_CLASS_CONTEXT_SPECIFIC:
-                if ($constructed) {
+                if (!$constructed) {
+                    return array(
+                        'type'     => $class,
+                        'constant' => $tag,
+                        'content'  => $content,
+                        'length'   => $length + $start - $current['start']
+                    );
+                }
+
+                $newcontent = array();
+                if (strlen($content)) {
                     $newcontent = $this->_decode_ber($content, $start);
                     $length = $newcontent['length'];
                     if (substr($content, $length, 2) == "\0\0") {
                         $length+= 2;
                     }
-
-                    // the array encapsulation is for BC with the old format
-                    $content = array($newcontent);
+                    $start+= $length;
+                    $newcontent = array($newcontent);
                 }
 
-                $start+= $length;
-
                 return array(
                     'type'     => $class,
                     'constant' => $tag,
                     // the array encapsulation is for BC with the old format
-                    'content'  => $content,
+                    'content'  => $newcontent,
                     // the only time when $content['headerlength'] isn't defined is when the length is indefinite.
                     // the absence of $content['headerlength'] is how we know if something is indefinite or not.
                     // technically, it could be defined to be 2 and then another indicator could be used but whatever.
diff --git a/phpseclib/Math/BigInteger.php b/phpseclib/Math/BigInteger.php
index 5753584c..8e54f741 100644
--- a/phpseclib/Math/BigInteger.php
+++ b/phpseclib/Math/BigInteger.php
@@ -278,7 +278,14 @@ class Math_BigInteger
             $versions = array();
             if (!empty($matches[1])) {
                 for ($i = 0; $i < count($matches[1]); $i++) {
-                    $versions[$matches[1][$i]] = trim(str_replace('=>', '', strip_tags($matches[2][$i])));
+                    $fullVersion = trim(str_replace('=>', '', strip_tags($matches[2][$i])));
+
+                    // Remove letter part in OpenSSL version
+                    if (!preg_match('/(\d+\.\d+\.\d+)/i', $fullVersion, $m)) {
+                        $versions[$matches[1][$i]] = $fullVersion;
+                    } else {
+                        $versions[$matches[1][$i]] = $m[0];
+                    }
                 }
             }
 
diff --git a/phpseclib/Net/SSH2.php b/phpseclib/Net/SSH2.php
index 4d230b14..aa3981f2 100644
--- a/phpseclib/Net/SSH2.php
+++ b/phpseclib/Net/SSH2.php
@@ -3400,7 +3400,7 @@ class Net_SSH2
      */
     function _disconnect($reason)
     {
-        if ($this->bitmap) {
+        if ($this->bitmap & NET_SSH2_MASK_CONNECTED) {
             $data = pack('CNNa*Na*', NET_SSH2_MSG_DISCONNECT, $reason, 0, '', 0, '');
             $this->_send_binary_packet($data);
             $this->bitmap = 0;
diff --git a/tests/Unit/File/ASN1Test.php b/tests/Unit/File/ASN1Test.php
index 8d8828b9..77ab0525 100644
--- a/tests/Unit/File/ASN1Test.php
+++ b/tests/Unit/File/ASN1Test.php
@@ -278,4 +278,15 @@ class Unit_File_ASN1Test extends PhpseclibTestCase
         $decoded = $asn1->decodeBER(base64_decode('MBaAFJtUo7c00HsI5EPZ4bkICfkOY2Pv'));
         $this->assertInternalType('string', $decoded[0]['content'][0]['content']);
     }
+
+    /**
+    * @group github602
+    */
+    public function testEmptyContextTag()
+    {
+        $asn1 = new File_ASN1();
+        $decoded = $asn1->decodeBER("\xa0\x00");
+        $this->assertInternalType('array', $decoded);
+        $this->assertCount(0, $decoded[0]['content']);
+    }
 }
diff --git a/tests/Unit/File/X509/CSRTest.php b/tests/Unit/File/X509/CSRTest.php
new file mode 100644
index 00000000..57bce68a
--- /dev/null
+++ b/tests/Unit/File/X509/CSRTest.php
@@ -0,0 +1,31 @@
+<?php
+/**
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2014 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ */
+
+require_once 'File/X509.php';
+
+class Unit_File_X509_CSRTest extends PhpseclibTestCase
+{
+    public function testLoadCSR()
+    {
+        $test = '-----BEGIN CERTIFICATE REQUEST-----
+MIIBWzCBxQIBADAeMRwwGgYDVQQKDBNwaHBzZWNsaWIgZGVtbyBjZXJ0MIGdMAsG
+CSqGSIb3DQEBAQOBjQAwgYkCgYEAtHDb4zoUyiRYsJ5PZrF/IJKAF9ZoHRpTxMA8
+a7iyFdsl/vvZLNPsNnFTXXnGdvsyFDEsF7AubaIXw8UKFPYqQRTzSVsvnNgIoVYj
+tTAXlB4oHipr7Kxcn4CXfmR0TYogyLvVZSZJYxh+CAuG4V9XM4HqkeE5gyBOsKGy
+5FUU8zMCAwEAAaAAMA0GCSqGSIb3DQEBBQUAA4GBAJjdaA9K9DN5xvSiOlCmmV1E
+npzHkI1Trraveu0gtRjT/EzHoqjCBI0ekCZ9+fhrex8Sm6Nsq9IgHYyrqnE+PQko
+4Nf2w2U3DWxU26D5E9DlI+bLyOCq4jqATLjHyyAsOZY/2+U73AZ82MJM/mGdh5fQ
+v5RwaQHmQEzHofTzF7I+
+-----END CERTIFICATE REQUEST-----';
+
+        $x509 = new File_X509();
+
+        $spkac = $x509->loadCSR($test);
+
+        $this->assertInternalType('array', $spkac);
+    }
+}