diff --git a/examples/public/auth_code.php b/examples/public/auth_code.php
index 51f1838cc..3c4ca68dc 100644
--- a/examples/public/auth_code.php
+++ b/examples/public/auth_code.php
@@ -36,7 +36,6 @@
         $refreshTokenRepository = new RefreshTokenRepository();
 
         $privateKeyPath = 'file://' . __DIR__ . '/../private.key';
-        $publicKeyPath = 'file://' . __DIR__ . '/../public.key';
 
         // Setup the authorization server
         $server = new AuthorizationServer(
@@ -44,9 +43,8 @@
             $accessTokenRepository,
             $scopeRepository,
             $privateKeyPath,
-            $publicKeyPath
+            'lxZFUEsBCJ2Yb14IF2ygAHI5N4+ZAUXXaSeeJm6+twsUmIen'
         );
-        $server->setEncryptionKey('lxZFUEsBCJ2Yb14IF2ygAHI5N4+ZAUXXaSeeJm6+twsUmIen');
 
         // Enable the authentication code grant on the server with a token TTL of 1 hour
         $server->enableGrantType(
diff --git a/examples/public/client_credentials.php b/examples/public/client_credentials.php
index fd7f5ee93..433fbdcec 100644
--- a/examples/public/client_credentials.php
+++ b/examples/public/client_credentials.php
@@ -32,7 +32,6 @@
         // Path to public and private keys
         $privateKey = 'file://' . __DIR__ . '/../private.key';
         //$privateKey = new CryptKey('file://path/to/private.key', 'passphrase'); // if private key has a pass phrase
-        $publicKey = 'file://' . __DIR__ . '/../public.key';
 
         // Setup the authorization server
         $server = new AuthorizationServer(
@@ -40,9 +39,8 @@
             $accessTokenRepository,
             $scopeRepository,
             $privateKey,
-            $publicKey
+            'lxZFUEsBCJ2Yb14IF2ygAHI5N4+ZAUXXaSeeJm6+twsUmIen'
         );
-        $server->setEncryptionKey('lxZFUEsBCJ2Yb14IF2ygAHI5N4+ZAUXXaSeeJm6+twsUmIen');
 
         // Enable the client credentials grant on the server
         $server->enableGrantType(
diff --git a/examples/public/implicit.php b/examples/public/implicit.php
index b496ce19a..73de09ec9 100644
--- a/examples/public/implicit.php
+++ b/examples/public/implicit.php
@@ -32,7 +32,6 @@
         $accessTokenRepository = new AccessTokenRepository();
 
         $privateKeyPath = 'file://' . __DIR__ . '/../private.key';
-        $publicKeyPath = 'file://' . __DIR__ . '/../public.key';
 
         // Setup the authorization server
         $server = new AuthorizationServer(
@@ -40,7 +39,7 @@
             $accessTokenRepository,
             $scopeRepository,
             $privateKeyPath,
-            $publicKeyPath
+            'lxZFUEsBCJ2Yb14IF2ygAHI5N4+ZAUXXaSeeJm6+twsUmIen'
         );
         $server->setEncryptionKey('lxZFUEsBCJ2Yb14IF2ygAHI5N4+ZAUXXaSeeJm6+twsUmIen');
 
diff --git a/examples/public/middleware_use.php b/examples/public/middleware_use.php
index f6a7fcf9e..121b91553 100644
--- a/examples/public/middleware_use.php
+++ b/examples/public/middleware_use.php
@@ -38,7 +38,6 @@
         $refreshTokenRepository = new RefreshTokenRepository();
 
         $privateKeyPath = 'file://' . __DIR__ . '/../private.key';
-        $publicKeyPath = 'file://' . __DIR__ . '/../public.key';
 
         // Setup the authorization server
         $server = new AuthorizationServer(
@@ -46,9 +45,8 @@
             $accessTokenRepository,
             $scopeRepository,
             $privateKeyPath,
-            $publicKeyPath
+            'lxZFUEsBCJ2Yb14IF2ygAHI5N4+ZAUXXaSeeJm6+twsUmIen'
         );
-        $server->setEncryptionKey('lxZFUEsBCJ2Yb14IF2ygAHI5N4+ZAUXXaSeeJm6+twsUmIen');
 
         // Enable the authentication code grant on the server with a token TTL of 1 hour
         $server->enableGrantType(
diff --git a/examples/public/password.php b/examples/public/password.php
index b62acc950..6857e988a 100644
--- a/examples/public/password.php
+++ b/examples/public/password.php
@@ -24,9 +24,8 @@
             new AccessTokenRepository(),            // instance of AccessTokenRepositoryInterface
             new ScopeRepository(),                  // instance of ScopeRepositoryInterface
             'file://' . __DIR__ . '/../private.key',    // path to private key
-            'file://' . __DIR__ . '/../public.key'      // path to public key
+            'lxZFUEsBCJ2Yb14IF2ygAHI5N4+ZAUXXaSeeJm6+twsUmIen'      // encryption key
         );
-        $server->setEncryptionKey('lxZFUEsBCJ2Yb14IF2ygAHI5N4+ZAUXXaSeeJm6+twsUmIen');
 
         $grant = new PasswordGrant(
             new UserRepository(),           // instance of UserRepositoryInterface
diff --git a/examples/public/refresh_token.php b/examples/public/refresh_token.php
index 25c321008..39be08262 100644
--- a/examples/public/refresh_token.php
+++ b/examples/public/refresh_token.php
@@ -32,7 +32,6 @@
         $refreshTokenRepository = new RefreshTokenRepository();
 
         $privateKeyPath = 'file://' . __DIR__ . '/../private.key';
-        $publicKeyPath = 'file://' . __DIR__ . '/../public.key';
 
         // Setup the authorization server
         $server = new AuthorizationServer(
@@ -40,9 +39,8 @@
             $accessTokenRepository,
             $scopeRepository,
             $privateKeyPath,
-            $publicKeyPath
+            'lxZFUEsBCJ2Yb14IF2ygAHI5N4+ZAUXXaSeeJm6+twsUmIen'
         );
-        $server->setEncryptionKey('lxZFUEsBCJ2Yb14IF2ygAHI5N4+ZAUXXaSeeJm6+twsUmIen');
 
         // Enable the refresh token grant on the server
         $grant = new RefreshTokenGrant($refreshTokenRepository);