diff --git a/phpseclib/File/X509.php b/phpseclib/File/X509.php
index df376989..b42da814 100644
--- a/phpseclib/File/X509.php
+++ b/phpseclib/File/X509.php
@@ -1993,6 +1993,18 @@ class File_X509 {
         return $this->getDN($string, $this->currentCert['tbsCertificate']['issuer']);
     }
 
+    /**
+     * Alias of getDN()
+     *
+     * @param Boolean $string optional
+     * @access public
+     * @return Mixed
+     */
+    function getSubjectDN($string = false)
+    {
+        return $this->getDN($string);
+    }
+
     /**
      * Get an individual Distinguished Name property for a certificates issuer
      *
@@ -2009,6 +2021,18 @@ class File_X509 {
         return $this->getDNProp($propName, $this->currentCert['tbsCertificate']['issuer']);
     }
 
+    /**
+     * Alias of getDNProp()
+     *
+     * @param String $propName
+     * @access public
+     * @return Mixed
+     */
+    function getSubjectDNProp($propName)
+    {
+        return $this->getDNProp($propName);
+    }
+
     /**
      * Set public key
      *