diff --git a/phpseclib/Crypt/DES.php b/phpseclib/Crypt/DES.php
index f6c1f301..0d6dd00e 100644
--- a/phpseclib/Crypt/DES.php
+++ b/phpseclib/Crypt/DES.php
@@ -723,7 +723,7 @@ class Crypt_DES {
                 mcrypt_generic_init($this->demcrypt, $this->keys, $this->decryptIV);
             }
 
-            return $this->mode != 'ctr' ? $this->_unpad($plaintext) : $plaintext;
+            return $this->paddable ? $this->_unpad($plaintext) : $plaintext;
         }
 
         if (!is_array($this->keys)) {
diff --git a/phpseclib/Crypt/TripleDES.php b/phpseclib/Crypt/TripleDES.php
index bbabf169..faf8c18a 100644
--- a/phpseclib/Crypt/TripleDES.php
+++ b/phpseclib/Crypt/TripleDES.php
@@ -265,6 +265,7 @@ class Crypt_TripleDES {
                 new Crypt_DES(CRYPT_DES_MODE_CBC),
                 new Crypt_DES(CRYPT_DES_MODE_CBC)
             );
+            $this->paddable = true;
 
             // we're going to be doing the padding, ourselves, so disable it in the Crypt_DES objects
             $this->des[0]->disablePadding();
diff --git a/phpseclib/File/X509.php b/phpseclib/File/X509.php
index 21a6cb6a..6ad74675 100644
--- a/phpseclib/File/X509.php
+++ b/phpseclib/File/X509.php
@@ -59,15 +59,35 @@ if (!class_exists('File_ASN1')) {
  */
 define('FILE_X509_VALIDATE_SIGNATURE_BY_CA', 1);
 
+/**#@+
+ * @access public
+ * @see File_X509::getDN()
+ */
 /**
- * Name format tokens for the getDN() method.
+ * Return internal array representation
  */
 define('FILE_X509_DN_ARRAY', 0); // Internal array representation.
-define('FILE_X509_DN_STRING', 1); // String.
-define('FILE_X509_DN_ASN1', 2); // ASN.1 Name string.
-define('FILE_X509_DN_OPENSSL', 3); // OpenSSL compatible array.
-define('FILE_X509_DN_CANON', 4); // Canonical ASN.1 RDNs string.
-define('FILE_X509_DN_HASH', 5); // Name hash for file indexing.
+/**
+ * Return string
+ */
+define('FILE_X509_DN_STRING', 1);
+/**
+ * Return ASN.1 name string
+ */
+define('FILE_X509_DN_ASN1', 2);
+/**
+ * Return OpenSSL compatible array
+ */
+define('FILE_X509_DN_OPENSSL', 3);
+/**
+ * Return canonical ASN.1 RDNs string
+ */
+define('FILE_X509_DN_CANON', 4);
+/**
+ * Return name ash for file indexing
+ */
+define('FILE_X509_DN_HASH', 5);
+/**#@-*/
 
 /**
  * Pure-PHP X.509 Parser
@@ -1346,8 +1366,11 @@ class File_X509 {
             subject=/O=organization/OU=org unit/CN=common name
             issuer=/O=organization/CN=common name
         */
-        $cert = preg_replace('#^(?:[^-].+[\r\n]+)+|-.+-|[\r\n]| #', '', $cert);
-        $cert = preg_match('#^[a-zA-Z\d/+]*={0,2}$#', $cert) ? base64_decode($cert) : false;
+        $temp = preg_replace('#^(?:[^-].+[\r\n]+)+|-.+-|[\r\n]| #', '', $cert);
+        $temp = preg_match('#^[a-zA-Z\d/+]*={0,2}$#', $temp) ? base64_decode($temp) : false;
+        if ($temp != false) {
+            $cert = $temp;
+        }
 
         if ($cert === false) {
             $this->currentCert = false;
@@ -1637,8 +1660,16 @@ class File_X509 {
      */
     function loadCA($cert)
     {
+        $olddn = $this->dn;
+        $oldcert = $this->currentCert;
+        $oldsigsubj = $this->signatureSubject;
+
         $cert = $this->loadX509($cert);
         if (!$cert) {
+            $this->dn = $olddn;
+            $this->currentCert = $oldcert;
+            $this->signatureSubject = $oldsigsubj;
+
             return false;
         }
 
@@ -1667,8 +1698,10 @@ class File_X509 {
         //}
 
         $this->CAs[] = $cert;
-        unset($this->currentCert);
-        unset($this->signatureSubject);
+
+        $this->dn = $olddn;
+        $this->currentCert = $oldcert;
+        $this->signatureSubject = $oldsigsubj;
 
         return true;
     }
@@ -2209,7 +2242,7 @@ class File_X509 {
     function getDN($format = FILE_X509_DN_ARRAY, $dn = NULL)
     {
         if (!isset($dn)) {
-            $dn = $this->dn;
+            $dn = isset($this->currentCert['tbsCertList']) ? $this->currentCert['tbsCertList']['issuer'] : $this->dn;
         }
 
         switch ((int) $format) {
@@ -2361,7 +2394,7 @@ class File_X509 {
                 return $this->getDN($format, $this->currentCert['tbsCertList']['issuer']);
         }
 
-    return false;
+        return false;
     }
 
     /**
@@ -2385,7 +2418,7 @@ class File_X509 {
                 return $this->getDN($format, $this->currentCert['certificationRequestInfo']['subject']);
         }
 
-    return false;
+        return false;
     }
 
     /**
@@ -2407,7 +2440,7 @@ class File_X509 {
                 return $this->getDNProp($propname, $this->currentCert['tbsCertList']['issuer'], $withType);
         }
 
-    return false;
+        return false;
     }
 
     /**
@@ -2431,7 +2464,7 @@ class File_X509 {
                 return $this->getDNProp($propname, $this->currentCert['certificationRequestInfo']['subject'], $withType);
         }
 
-    return false;
+        return false;
     }
 
     /**
@@ -2518,8 +2551,12 @@ class File_X509 {
 
         $asn1 = new File_ASN1();
 
-        $csr = preg_replace('#^(?:[^-].+[\r\n]+)+|-.+-|[\r\n]| #', '', $csr);
-        $orig = $csr = preg_match('#^[a-zA-Z\d/+]*={0,2}$#', $csr) ? base64_decode($csr) : false;
+        $temp = preg_replace('#^(?:[^-].+[\r\n]+)+|-.+-|[\r\n]| #', '', $csr);
+        $temp = preg_match('#^[a-zA-Z\d/+]*={0,2}$#', $temp) ? base64_decode($temp) : false;
+        if ($temp != false) {
+            $csr = $temp;
+        }
+        $orig = $csr;
 
         if ($csr === false) {
             $this->currentCert = false;
@@ -2612,8 +2649,12 @@ class File_X509 {
     {
         $asn1 = new File_ASN1();
 
-        $crl = preg_replace('#^(?:[^-].+[\r\n]+)+|-.+-|[\r\n]#', '', $crl);
-        $orig = $crl = preg_match('#^[a-zA-Z\d/+]*={0,2}$#', $crl) ? base64_decode($crl) : false;
+        $temp = preg_replace('#^(?:[^-].+[\r\n]+)+|-.+-|[\r\n]| #', '', $csr);
+        $temp = preg_match('#^[a-zA-Z\d/+]*={0,2}$#', $temp) ? base64_decode($temp) : false;
+        if ($temp != false) {
+            $crl = $temp;
+        }
+        $orig = $crl;
 
         if ($crl === false) {
             $this->currentCert = false;
@@ -3625,7 +3666,7 @@ class File_X509 {
 
         $result = array();
 
-        if (!is_array($rclist = $this->_subArray($crl, 'tbsCertList/revokedCertificates'))) {
+        if (is_array($rclist = $this->_subArray($crl, 'tbsCertList/revokedCertificates'))) {
             foreach ($rclist as $rc) {
                 $result[] = $rc['userCertificate']->toString();
             }
diff --git a/phpseclib/Net/SSH1.php b/phpseclib/Net/SSH1.php
index 69669aa7..67e09652 100644
--- a/phpseclib/Net/SSH1.php
+++ b/phpseclib/Net/SSH1.php
@@ -428,7 +428,7 @@ class Net_SSH1 {
      * @var Array
      * @access private
      */
-    var $interactive_buffer = '';
+    var $interactiveBuffer = '';
 
     /**
      * Default Constructor.