diff --git a/lib/Providers/Qr/BaseHTTPQRCodeProvider.php b/lib/Providers/Qr/BaseHTTPQRCodeProvider.php
index 5cb3add..32d5f9d 100644
--- a/lib/Providers/Qr/BaseHTTPQRCodeProvider.php
+++ b/lib/Providers/Qr/BaseHTTPQRCodeProvider.php
@@ -9,7 +9,7 @@ abstract class BaseHTTPQRCodeProvider implements IQRCodeProvider
     protected function getContent($url)
     {
         $curlhandle = curl_init();
-        
+
         curl_setopt_array($curlhandle, array(
             CURLOPT_URL => $url,
             CURLOPT_RETURNTRANSFER => true,
@@ -20,8 +20,8 @@ abstract class BaseHTTPQRCodeProvider implements IQRCodeProvider
             CURLOPT_USERAGENT => 'TwoFactorAuth'
         ));
         $data = curl_exec($curlhandle);
-        
+
         curl_close($curlhandle);
         return $data;
     }
-}
\ No newline at end of file
+}
diff --git a/lib/Providers/Qr/IQRCodeProvider.php b/lib/Providers/Qr/IQRCodeProvider.php
index 83ed67b..36310bd 100644
--- a/lib/Providers/Qr/IQRCodeProvider.php
+++ b/lib/Providers/Qr/IQRCodeProvider.php
@@ -6,4 +6,4 @@ interface IQRCodeProvider
 {
     public function getQRCodeImage($qrtext, $size);
     public function getMimeType();
-}
\ No newline at end of file
+}
diff --git a/lib/Providers/Qr/ImageChartsQRCodeProvider.php b/lib/Providers/Qr/ImageChartsQRCodeProvider.php
index cc094c3..ab1ecf3 100644
--- a/lib/Providers/Qr/ImageChartsQRCodeProvider.php
+++ b/lib/Providers/Qr/ImageChartsQRCodeProvider.php
@@ -3,37 +3,38 @@
 namespace RobThree\Auth\Providers\Qr;
 
 // https://image-charts.com
-class ImageChartsQRCodeProvider extends BaseHTTPQRCodeProvider 
+class ImageChartsQRCodeProvider extends BaseHTTPQRCodeProvider
 {
     public $errorcorrectionlevel;
     public $margin;
 
-    function __construct($verifyssl = false, $errorcorrectionlevel = 'L', $margin = 1) 
+    public function __construct($verifyssl = false, $errorcorrectionlevel = 'L', $margin = 1)
     {
-        if (!is_bool($verifyssl))
-            throw new \QRException('VerifySSL must be bool');
+        if (!is_bool($verifyssl)) {
+            throw new QRException('VerifySSL must be bool');
+        }
 
         $this->verifyssl = $verifyssl;
-        
+
         $this->errorcorrectionlevel = $errorcorrectionlevel;
         $this->margin = $margin;
     }
-    
-    public function getMimeType() 
+
+    public function getMimeType()
     {
         return 'image/png';
     }
-    
-    public function getQRCodeImage($qrtext, $size) 
+
+    public function getQRCodeImage($qrtext, $size)
     {
         return $this->getContent($this->getUrl($qrtext, $size));
     }
-    
-    public function getUrl($qrtext, $size) 
+
+    public function getUrl($qrtext, $size)
     {
         return 'https://image-charts.com/chart?cht=qr'
-            . '&chs=' . ceil($size/2) . 'x' . ceil($size/2)
+            . '&chs=' . ceil($size / 2) . 'x' . ceil($size / 2)
             . '&chld=' . $this->errorcorrectionlevel . '|' . $this->margin
             . '&chl=' . rawurlencode($qrtext);
     }
-}
\ No newline at end of file
+}
diff --git a/lib/Providers/Qr/QRException.php b/lib/Providers/Qr/QRException.php
index c28e829..4e75f77 100644
--- a/lib/Providers/Qr/QRException.php
+++ b/lib/Providers/Qr/QRException.php
@@ -1,5 +1,7 @@
 <?php
 
+namespace RobThree\Auth\Providers\Qr;
+
 use RobThree\Auth\TwoFactorAuthException;
 
-class QRException extends TwoFactorAuthException {}
\ No newline at end of file
+class QRException extends TwoFactorAuthException {}
diff --git a/lib/Providers/Qr/QRServerProvider.php b/lib/Providers/Qr/QRServerProvider.php
index 928b87b..e8aa9c1 100644
--- a/lib/Providers/Qr/QRServerProvider.php
+++ b/lib/Providers/Qr/QRServerProvider.php
@@ -3,7 +3,7 @@
 namespace RobThree\Auth\Providers\Qr;
 
 // http://goqr.me/api/doc/create-qr-code/
-class QRServerProvider extends BaseHTTPQRCodeProvider 
+class QRServerProvider extends BaseHTTPQRCodeProvider
 {
     public $errorcorrectionlevel;
     public $margin;
@@ -12,13 +12,14 @@ class QRServerProvider extends BaseHTTPQRCodeProvider
     public $color;
     public $format;
 
-    function __construct($verifyssl = false, $errorcorrectionlevel = 'L', $margin = 4, $qzone = 1, $bgcolor = 'ffffff', $color = '000000', $format = 'png') 
+    public function __construct($verifyssl = false, $errorcorrectionlevel = 'L', $margin = 4, $qzone = 1, $bgcolor = 'ffffff', $color = '000000', $format = 'png')
     {
-        if (!is_bool($verifyssl))
+        if (!is_bool($verifyssl)) {
             throw new QRException('VerifySSL must be bool');
+        }
 
         $this->verifyssl = $verifyssl;
-        
+
         $this->errorcorrectionlevel = $errorcorrectionlevel;
         $this->margin = $margin;
         $this->qzone = $qzone;
@@ -26,37 +27,36 @@ class QRServerProvider extends BaseHTTPQRCodeProvider
         $this->color = $color;
         $this->format = $format;
     }
-    
-    public function getMimeType() 
+
+    public function getMimeType()
     {
-        switch (strtolower($this->format))
-        {
-        	case 'png':
+        switch (strtolower($this->format)) {
+            case 'png':
                 return 'image/png';
-        	case 'gif':
+            case 'gif':
                 return 'image/gif';
-        	case 'jpg':
-        	case 'jpeg':
+            case 'jpg':
+            case 'jpeg':
                 return 'image/jpeg';
-        	case 'svg':
+            case 'svg':
                 return 'image/svg+xml';
-        	case 'eps':
+            case 'eps':
                 return 'application/postscript';
         }
-        throw new \QRException(sprintf('Unknown MIME-type: %s', $this->format));
+        throw new QRException(sprintf('Unknown MIME-type: %s', $this->format));
     }
-    
-    public function getQRCodeImage($qrtext, $size) 
+
+    public function getQRCodeImage($qrtext, $size)
     {
         return $this->getContent($this->getUrl($qrtext, $size));
     }
-    
-    private function decodeColor($value) 
+
+    private function decodeColor($value)
     {
         return vsprintf('%d-%d-%d', sscanf($value, "%02x%02x%02x"));
     }
-    
-    public function getUrl($qrtext, $size) 
+
+    public function getUrl($qrtext, $size)
     {
         return 'https://api.qrserver.com/v1/create-qr-code/'
             . '?size=' . $size . 'x' . $size
@@ -68,4 +68,4 @@ class QRServerProvider extends BaseHTTPQRCodeProvider
             . '&format=' . strtolower($this->format)
             . '&data=' . rawurlencode($qrtext);
     }
-}
\ No newline at end of file
+}
diff --git a/lib/Providers/Qr/QRicketProvider.php b/lib/Providers/Qr/QRicketProvider.php
index 59e27cc..ce28c6c 100644
--- a/lib/Providers/Qr/QRicketProvider.php
+++ b/lib/Providers/Qr/QRicketProvider.php
@@ -3,7 +3,7 @@
 namespace RobThree\Auth\Providers\Qr;
 
 // http://qrickit.com/qrickit_apps/qrickit_api.php
-class QRicketProvider extends BaseHTTPQRCodeProvider 
+class QRicketProvider extends BaseHTTPQRCodeProvider
 {
     public $errorcorrectionlevel;
     public $margin;
@@ -12,36 +12,35 @@ class QRicketProvider extends BaseHTTPQRCodeProvider
     public $color;
     public $format;
 
-    function __construct($errorcorrectionlevel = 'L', $bgcolor = 'ffffff', $color = '000000', $format = 'p') 
+    public function __construct($errorcorrectionlevel = 'L', $bgcolor = 'ffffff', $color = '000000', $format = 'p')
     {
         $this->verifyssl = false;
-        
+
         $this->errorcorrectionlevel = $errorcorrectionlevel;
         $this->bgcolor = $bgcolor;
         $this->color = $color;
         $this->format = $format;
     }
-    
-    public function getMimeType() 
+
+    public function getMimeType()
     {
-        switch (strtolower($this->format))
-        {
-        	case 'p':
+        switch (strtolower($this->format)) {
+            case 'p':
                 return 'image/png';
-        	case 'g':
+            case 'g':
                 return 'image/gif';
-        	case 'j':
+            case 'j':
                 return 'image/jpeg';
         }
-        throw new \QRException(sprintf('Unknown MIME-type: %s', $this->format));
+        throw new QRException(sprintf('Unknown MIME-type: %s', $this->format));
     }
-    
-    public function getQRCodeImage($qrtext, $size) 
+
+    public function getQRCodeImage($qrtext, $size)
     {
         return $this->getContent($this->getUrl($qrtext, $size));
     }
-    
-    public function getUrl($qrtext, $size) 
+
+    public function getUrl($qrtext, $size)
     {
         return 'http://qrickit.com/api/qr'
             . '?qrsize=' . $size
@@ -51,4 +50,4 @@ class QRicketProvider extends BaseHTTPQRCodeProvider
             . '&t=' . strtolower($this->format)
             . '&d=' . rawurlencode($qrtext);
     }
-}
\ No newline at end of file
+}
diff --git a/lib/Providers/Rng/CSRNGProvider.php b/lib/Providers/Rng/CSRNGProvider.php
index 8dba7fc..3ee02c8 100644
--- a/lib/Providers/Rng/CSRNGProvider.php
+++ b/lib/Providers/Rng/CSRNGProvider.php
@@ -4,11 +4,13 @@ namespace RobThree\Auth\Providers\Rng;
 
 class CSRNGProvider implements IRNGProvider
 {
-    public function getRandomBytes($bytecount) {
+    public function getRandomBytes($bytecount)
+    {
         return random_bytes($bytecount);    // PHP7+
     }
-    
-    public function isCryptographicallySecure() {
+
+    public function isCryptographicallySecure()
+    {
         return true;
     }
-}
\ No newline at end of file
+}
diff --git a/lib/Providers/Rng/HashRNGProvider.php b/lib/Providers/Rng/HashRNGProvider.php
index eb42577..4af311b 100644
--- a/lib/Providers/Rng/HashRNGProvider.php
+++ b/lib/Providers/Rng/HashRNGProvider.php
@@ -1,28 +1,33 @@
 <?php
+
 namespace RobThree\Auth\Providers\Rng;
 
 class HashRNGProvider implements IRNGProvider
 {
     private $algorithm;
-    
-    function __construct($algorithm = 'sha256' ) {
+
+    public function __construct($algorithm = 'sha256')
+    {
         $algos = array_values(hash_algos());
-        if (!in_array($algorithm, $algos, true))
-            throw new \RNGException('Unsupported algorithm specified');
+        if (!in_array($algorithm, $algos, true)) {
+            throw new RNGException('Unsupported algorithm specified');
+        }
         $this->algorithm = $algorithm;
     }
-    
-    public function getRandomBytes($bytecount) {
+
+    public function getRandomBytes($bytecount)
+    {
         $result = '';
         $hash = mt_rand();
         for ($i = 0; $i < $bytecount; $i++) {
-            $hash = hash($this->algorithm, $hash.mt_rand(), true);
-            $result .= $hash[mt_rand(0, strlen($hash)-1)];
+            $hash = hash($this->algorithm, $hash . mt_rand(), true);
+            $result .= $hash[mt_rand(0, strlen($hash) - 1)];
         }
         return $result;
     }
-    
-    public function isCryptographicallySecure() {
+
+    public function isCryptographicallySecure()
+    {
         return false;
     }
 }
diff --git a/lib/Providers/Rng/IRNGProvider.php b/lib/Providers/Rng/IRNGProvider.php
index 6be2800..f2026e1 100644
--- a/lib/Providers/Rng/IRNGProvider.php
+++ b/lib/Providers/Rng/IRNGProvider.php
@@ -6,4 +6,4 @@ interface IRNGProvider
 {
     public function getRandomBytes($bytecount);
     public function isCryptographicallySecure();
-}
\ No newline at end of file
+}
diff --git a/lib/Providers/Rng/MCryptRNGProvider.php b/lib/Providers/Rng/MCryptRNGProvider.php
index 0eeab2c..5f7e7c3 100644
--- a/lib/Providers/Rng/MCryptRNGProvider.php
+++ b/lib/Providers/Rng/MCryptRNGProvider.php
@@ -5,19 +5,23 @@ namespace RobThree\Auth\Providers\Rng;
 class MCryptRNGProvider implements IRNGProvider
 {
     private $source;
-    
-    function __construct($source = MCRYPT_DEV_URANDOM) {
+
+    public function __construct($source = MCRYPT_DEV_URANDOM)
+    {
         $this->source = $source;
     }
-    
-    public function getRandomBytes($bytecount) {
+
+    public function getRandomBytes($bytecount)
+    {
         $result = @mcrypt_create_iv($bytecount, $this->source);
-        if ($result === false)
-            throw new \RNGException('mcrypt_create_iv returned an invalid value');
+        if ($result === false) {
+            throw new RNGException('mcrypt_create_iv returned an invalid value');
+        }
         return $result;
     }
-    
-    public function isCryptographicallySecure() {
+
+    public function isCryptographicallySecure()
+    {
         return true;
     }
-}
\ No newline at end of file
+}
diff --git a/lib/Providers/Rng/OpenSSLRNGProvider.php b/lib/Providers/Rng/OpenSSLRNGProvider.php
index dc66c64..99e2112 100644
--- a/lib/Providers/Rng/OpenSSLRNGProvider.php
+++ b/lib/Providers/Rng/OpenSSLRNGProvider.php
@@ -5,21 +5,26 @@ namespace RobThree\Auth\Providers\Rng;
 class OpenSSLRNGProvider implements IRNGProvider
 {
     private $requirestrong;
-    
-    function __construct($requirestrong = true) {
+
+    public function __construct($requirestrong = true)
+    {
         $this->requirestrong = $requirestrong;
     }
-    
-    public function getRandomBytes($bytecount) {
+
+    public function getRandomBytes($bytecount)
+    {
         $result = openssl_random_pseudo_bytes($bytecount, $crypto_strong);
-        if ($this->requirestrong && ($crypto_strong === false))
-            throw new \RNGException('openssl_random_pseudo_bytes returned non-cryptographically strong value');
-        if ($result === false)
-            throw new \RNGException('openssl_random_pseudo_bytes returned an invalid value');
+        if ($this->requirestrong && ($crypto_strong === false)) {
+            throw new RNGException('openssl_random_pseudo_bytes returned non-cryptographically strong value');
+        }
+        if ($result === false) {
+            throw new RNGException('openssl_random_pseudo_bytes returned an invalid value');
+        }
         return $result;
     }
-    
-    public function isCryptographicallySecure() {
+
+    public function isCryptographicallySecure()
+    {
         return $this->requirestrong;
     }
-}
\ No newline at end of file
+}
diff --git a/lib/Providers/Rng/RNGException.php b/lib/Providers/Rng/RNGException.php
index eb5e913..f9a11ac 100644
--- a/lib/Providers/Rng/RNGException.php
+++ b/lib/Providers/Rng/RNGException.php
@@ -1,5 +1,7 @@
 <?php
 
+namespace RobThree\Auth\Providers\Rng;
+
 use RobThree\Auth\TwoFactorAuthException;
 
-class RNGException extends TwoFactorAuthException {}
\ No newline at end of file
+class RNGException extends TwoFactorAuthException {}
diff --git a/lib/Providers/Time/HttpTimeProvider.php b/lib/Providers/Time/HttpTimeProvider.php
index 1f98f57..0ca4a37 100644
--- a/lib/Providers/Time/HttpTimeProvider.php
+++ b/lib/Providers/Time/HttpTimeProvider.php
@@ -2,6 +2,8 @@
 
 namespace RobThree\Auth\Providers\Time;
 
+use DateTime;
+
 /**
  * Takes the time from any webserver by doing a HEAD request on the specified URL and extracting the 'Date:' header
  */
@@ -11,7 +13,7 @@ class HttpTimeProvider implements ITimeProvider
     public $options;
     public $expectedtimeformat;
 
-    function __construct($url = 'https://google.com', $expectedtimeformat = 'D, d M Y H:i:s O+', array $options = null)
+    public function __construct($url = 'https://google.com', $expectedtimeformat = 'D, d M Y H:i:s O+', array $options = null)
     {
         $this->url = $url;
         $this->expectedtimeformat = $expectedtimeformat;
@@ -34,7 +36,8 @@ class HttpTimeProvider implements ITimeProvider
         }
     }
 
-    public function getTime() {
+    public function getTime()
+    {
         try {
             $context  = stream_context_create($this->options);
             $fd = fopen($this->url, 'rb', false, $context);
@@ -42,8 +45,9 @@ class HttpTimeProvider implements ITimeProvider
             fclose($fd);
 
             foreach ($headers['wrapper_data'] as $h) {
-                if (strcasecmp(substr($h, 0, 5), 'Date:') === 0)
-                    return \DateTime::createFromFormat($this->expectedtimeformat, trim(substr($h,5)))->getTimestamp();
+                if (strcasecmp(substr($h, 0, 5), 'Date:') === 0) {
+                    return DateTime::createFromFormat($this->expectedtimeformat, trim(substr($h, 5)))->getTimestamp();
+                }
             }
             throw new \Exception('Invalid or no "Date:" header found');
         } catch (\Exception $ex) {
diff --git a/lib/Providers/Time/ITimeProvider.php b/lib/Providers/Time/ITimeProvider.php
index a3b87a2..3d417fe 100644
--- a/lib/Providers/Time/ITimeProvider.php
+++ b/lib/Providers/Time/ITimeProvider.php
@@ -5,4 +5,4 @@ namespace RobThree\Auth\Providers\Time;
 interface ITimeProvider
 {
     public function getTime();
-}
\ No newline at end of file
+}
diff --git a/lib/Providers/Time/LocalMachineTimeProvider.php b/lib/Providers/Time/LocalMachineTimeProvider.php
index 572cedc..2fe6846 100644
--- a/lib/Providers/Time/LocalMachineTimeProvider.php
+++ b/lib/Providers/Time/LocalMachineTimeProvider.php
@@ -2,8 +2,10 @@
 
 namespace RobThree\Auth\Providers\Time;
 
-class LocalMachineTimeProvider implements ITimeProvider {
-    public function getTime() {
+class LocalMachineTimeProvider implements ITimeProvider
+{
+    public function getTime()
+    {
         return time();
     }
-}
\ No newline at end of file
+}
diff --git a/lib/Providers/Time/NTPTimeProvider.php b/lib/Providers/Time/NTPTimeProvider.php
index d69a3a6..072b7d4 100644
--- a/lib/Providers/Time/NTPTimeProvider.php
+++ b/lib/Providers/Time/NTPTimeProvider.php
@@ -11,20 +11,23 @@ class NTPTimeProvider implements ITimeProvider
     public $port;
     public $timeout;
 
-    function __construct($host = 'time.google.com', $port = 123, $timeout = 1)
+    public function __construct($host = 'time.google.com', $port = 123, $timeout = 1)
     {
         $this->host = $host;
 
-        if (!is_int($port) || $port <= 0 || $port > 65535)
+        if (!is_int($port) || $port <= 0 || $port > 65535) {
             throw new \TimeException('Port must be 0 < port < 65535');
+        }
         $this->port = $port;
 
-        if (!is_int($timeout) || $timeout < 0)
+        if (!is_int($timeout) || $timeout < 0) {
             throw new \TimeException('Timeout must be >= 0');
+        }
         $this->timeout = $timeout;
     }
 
-    public function getTime() {
+    public function getTime()
+    {
         try {
             /* Create a socket and connect to NTP server */
             $sock = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP);
@@ -36,8 +39,9 @@ class NTPTimeProvider implements ITimeProvider
             socket_send($sock, $msg, strlen($msg), 0);
 
             /* Receive response and close socket */
-            if (socket_recv($sock, $recv, 48, MSG_WAITALL) === false)
+            if (socket_recv($sock, $recv, 48, MSG_WAITALL) === false) {
                 throw new \Exception(socket_strerror(socket_last_error($sock)));
+            }
             socket_close($sock);
 
             /* Interpret response */
@@ -46,9 +50,8 @@ class NTPTimeProvider implements ITimeProvider
 
             /* NTP is number of seconds since 0000 UT on 1 January 1900 Unix time is seconds since 0000 UT on 1 January 1970 */
             return $timestamp - 2208988800;
-        }
-        catch (Exception $ex) {
-            throw new \TimeException(sprintf('Unable to retrieve time from %s (%s)', $this->host, $ex->getMessage()));
+        } catch (\Exception $ex) {
+            throw new TimeException(sprintf('Unable to retrieve time from %s (%s)', $this->host, $ex->getMessage()));
         }
     }
 }
diff --git a/lib/TwoFactorAuth.php b/lib/TwoFactorAuth.php
index 7bc067d..dde4cd1 100644
--- a/lib/TwoFactorAuth.php
+++ b/lib/TwoFactorAuth.php
@@ -1,9 +1,18 @@
 <?php
+
 namespace RobThree\Auth;
 
 use RobThree\Auth\Providers\Qr\IQRCodeProvider;
+use RobThree\Auth\Providers\Qr\QRServerProvider;
+use RobThree\Auth\Providers\Rng\CSRNGProvider;
+use RobThree\Auth\Providers\Rng\HashRNGProvider;
 use RobThree\Auth\Providers\Rng\IRNGProvider;
+use RobThree\Auth\Providers\Rng\MCryptRNGProvider;
+use RobThree\Auth\Providers\Rng\OpenSSLRNGProvider;
+use RobThree\Auth\Providers\Time\HttpTimeProvider;
 use RobThree\Auth\Providers\Time\ITimeProvider;
+use RobThree\Auth\Providers\Time\LocalMachineTimeProvider;
+use RobThree\Auth\Providers\Time\NTPTimeProvider;
 
 // Based on / inspired by: https://github.com/PHPGangsta/GoogleAuthenticator
 // Algorithms, digits, period etc. explained: https://github.com/google/google-authenticator/wiki/Key-Uri-Format
@@ -21,20 +30,23 @@ class TwoFactorAuth
     private static $_base32lookup = array();
     private static $_supportedalgos = array('sha1', 'sha256', 'sha512', 'md5');
 
-    function __construct($issuer = null, $digits = 6, $period = 30, $algorithm = 'sha1', IQRCodeProvider $qrcodeprovider = null, IRNGProvider $rngprovider = null, ITimeProvider $timeprovider = null)
+    public function __construct($issuer = null, $digits = 6, $period = 30, $algorithm = 'sha1', IQRCodeProvider $qrcodeprovider = null, IRNGProvider $rngprovider = null, ITimeProvider $timeprovider = null)
     {
         $this->issuer = $issuer;
-        if (!is_int($digits) || $digits <= 0)
+        if (!is_int($digits) || $digits <= 0) {
             throw new TwoFactorAuthException('Digits must be int > 0');
+        }
         $this->digits = $digits;
 
-        if (!is_int($period) || $period <= 0)
+        if (!is_int($period) || $period <= 0) {
             throw new TwoFactorAuthException('Period must be int > 0');
+        }
         $this->period = $period;
 
         $algorithm = strtolower(trim($algorithm));
-        if (!in_array($algorithm, self::$_supportedalgos))
+        if (!in_array($algorithm, self::$_supportedalgos)) {
             throw new TwoFactorAuthException('Unsupported algorithm: ' . $algorithm);
+        }
         $this->algorithm = $algorithm;
         $this->qrcodeprovider = $qrcodeprovider;
         $this->rngprovider = $rngprovider;
@@ -51,12 +63,14 @@ class TwoFactorAuth
     {
         $secret = '';
         $bytes = ceil($bits / 5);   //We use 5 bits of each byte (since we have a 32-character 'alphabet' / BASE32)
-        $rngprovider = $this->getRngprovider();
-        if ($requirecryptosecure && !$rngprovider->isCryptographicallySecure())
+        $rngprovider = $this->getRngProvider();
+        if ($requirecryptosecure && !$rngprovider->isCryptographicallySecure()) {
             throw new TwoFactorAuthException('RNG provider is not cryptographically secure');
+        }
         $rnd = $rngprovider->getRandomBytes($bytes);
-        for ($i = 0; $i < $bytes; $i++)
+        for ($i = 0; $i < $bytes; $i++) {
             $secret .= self::$_base32[ord($rnd[$i]) & 31];  //Mask out left 3 bits for 0-31 values
+        }
         return $secret;
     }
 
@@ -101,16 +115,18 @@ class TwoFactorAuth
     /**
      * Timing-attack safe comparison of 2 codes (see http://blog.ircmaxell.com/2014/11/its-all-about-time.html)
      */
-    private function codeEquals($safe, $user) {
+    private function codeEquals($safe, $user)
+    {
         if (function_exists('hash_equals')) {
             return hash_equals($safe, $user);
         }
         // In general, it's not possible to prevent length leaks. So it's OK to leak the length. The important part is that
         // we don't leak information about the difference of the two strings.
-        if (strlen($safe)===strlen($user)) {
+        if (strlen($safe) === strlen($user)) {
             $result = 0;
-            for ($i = 0; $i < strlen($safe); $i++)
+            for ($i = 0; $i < strlen($safe); $i++) {
                 $result |= (ord($safe[$i]) ^ ord($user[$i]));
+            }
             return $result === 0;
         }
         return false;
@@ -121,8 +137,9 @@ class TwoFactorAuth
      */
     public function getQRCodeImageAsDataUri($label, $secret, $size = 200)
     {
-        if (!is_int($size) || $size <= 0)
+        if (!is_int($size) || $size <= 0) {
             throw new TwoFactorAuthException('Size must be int > 0');
+        }
 
         $qrcodeprovider = $this->getQrCodeProvider();
         return 'data:'
@@ -136,26 +153,30 @@ class TwoFactorAuth
      */
     public function ensureCorrectTime(array $timeproviders = null, $leniency = 5)
     {
-        if ($timeproviders != null && !is_array($timeproviders))
+        if ($timeproviders !== null && !is_array($timeproviders)) {
             throw new TwoFactorAuthException('No timeproviders specified');
+        }
 
-        if ($timeproviders == null)
+        if ($timeproviders === null) {
             $timeproviders = array(
-                new Providers\Time\NTPTimeProvider(),
-                new Providers\Time\HttpTimeProvider()
+                new NTPTimeProvider(),
+                new HttpTimeProvider()
             );
+        }
 
         // Get default time provider
         $timeprovider = $this->getTimeProvider();
 
         // Iterate specified time providers
         foreach ($timeproviders as $t) {
-            if (!($t instanceof ITimeProvider))
+            if (!($t instanceof ITimeProvider)) {
                 throw new TwoFactorAuthException('Object does not implement ITimeProvider');
+            }
 
             // Get time from default time provider and compare to specific time provider and throw if time difference is more than specified number of seconds leniency
-            if (abs($timeprovider->getTime() - $t->getTime()) > $leniency)
+            if (abs($timeprovider->getTime() - $t->getTime()) > $leniency) {
                 throw new TwoFactorAuthException(sprintf('Time for timeprovider is off by more than %d seconds when compared to %s', $leniency, get_class($t)));
+            }
         }
     }
 
@@ -184,23 +205,27 @@ class TwoFactorAuth
 
     private function base32Decode($value)
     {
-        if (strlen($value)==0) return '';
+        if (strlen($value) == 0) {
+            return '';
+        }
 
-        if (preg_match('/[^'.preg_quote(self::$_base32dict).']/', $value) !== 0)
+        if (preg_match('/[^' . preg_quote(self::$_base32dict) . ']/', $value) !== 0) {
             throw new TwoFactorAuthException('Invalid base32 string');
+        }
 
         $buffer = '';
-        foreach (str_split($value) as $char)
-        {
-            if ($char !== '=')
+        foreach (str_split($value) as $char) {
+            if ($char !== '=') {
                 $buffer .= str_pad(decbin(self::$_base32lookup[$char]), 5, 0, STR_PAD_LEFT);
+            }
         }
         $length = strlen($buffer);
         $blocks = trim(chunk_split(substr($buffer, 0, $length - ($length % 8)), 8, ' '));
 
         $output = '';
-        foreach (explode(' ', $blocks) as $block)
+        foreach (explode(' ', $blocks) as $block) {
             $output .= chr(bindec(str_pad($block, 8, 0, STR_PAD_RIGHT)));
+        }
         return $output;
     }
 
@@ -212,7 +237,7 @@ class TwoFactorAuth
     {
         // Set default QR Code provider if none was specified
         if (null === $this->qrcodeprovider) {
-            return $this->qrcodeprovider = new Providers\Qr\QRServerProvider();
+            return $this->qrcodeprovider = new QRServerProvider();
         }
         return $this->qrcodeprovider;
     }
@@ -221,22 +246,22 @@ class TwoFactorAuth
      * @return IRNGProvider
      * @throws TwoFactorAuthException
      */
-    public function getRngprovider()
+    public function getRngProvider()
     {
         if (null !== $this->rngprovider) {
             return $this->rngprovider;
         }
         if (function_exists('random_bytes')) {
-            return $this->rngprovider = new Providers\Rng\CSRNGProvider();
+            return $this->rngprovider = new CSRNGProvider();
         }
         if (function_exists('mcrypt_create_iv')) {
-            return $this->rngprovider = new Providers\Rng\MCryptRNGProvider();
+            return $this->rngprovider = new MCryptRNGProvider();
         }
         if (function_exists('openssl_random_pseudo_bytes')) {
-            return $this->rngprovider = new Providers\Rng\OpenSSLRNGProvider();
+            return $this->rngprovider = new OpenSSLRNGProvider();
         }
         if (function_exists('hash')) {
-            return $this->rngprovider = new Providers\Rng\HashRNGProvider();
+            return $this->rngprovider = new HashRNGProvider();
         }
         throw new TwoFactorAuthException('Unable to find a suited RNGProvider');
     }
@@ -249,8 +274,8 @@ class TwoFactorAuth
     {
         // Set default time provider if none was specified
         if (null === $this->timeprovider) {
-            return $this->timeprovider = new Providers\Time\LocalMachineTimeProvider();
+            return $this->timeprovider = new LocalMachineTimeProvider();
         }
         return $this->timeprovider;
     }
-}
\ No newline at end of file
+}
diff --git a/lib/TwoFactorAuthException.php b/lib/TwoFactorAuthException.php
index af51b74..bce8370 100644
--- a/lib/TwoFactorAuthException.php
+++ b/lib/TwoFactorAuthException.php
@@ -4,4 +4,4 @@ namespace RobThree\Auth;
 
 use Exception;
 
-class TwoFactorAuthException extends \Exception {}
\ No newline at end of file
+class TwoFactorAuthException extends Exception {}