diff --git a/README.md b/README.md
index ce6537e..d9a8e4c 100644
--- a/README.md
+++ b/README.md
@@ -24,10 +24,13 @@ NuSOAP is a rewrite of SOAPx4, provided by NuSphere and Dietrich Ayala. It is a
 
 ## Info
 
-- Supported PHP: [5.4 - 8.1](https://travis-ci.org/pwnlabs/nusoap)
-- Latest version: [0.9.11](https://github.com/pwnlabs/nusoap/releases/tag/v0.9.11)
-- Dev version: [develop](https://github.com/pwnlabs/nusoap/tree/develop)
+- [Supported PHP: 7.3 - 8.1](https://travis-ci.org/pwnlabs/nusoap)
+- [Latest release: 0.9.11](https://github.com/pwnlabs/nusoap/releases/tag/v0.9.11)
+- [Dev version: develop](https://github.com/pwnlabs/nusoap/tree/develop)
 - Official project: https://sourceforge.net/projects/nusoap/
+- [smevx-crypto for Java 8](https://github.com/proxy-m/smevx-crypto)
+- [openssl error: Algorithm gost2012_256 not found](https://forum.rutoken.ru/topic/3173/)
+- [openssl gost2012_256, hmac-gost-3411-12-256](https://docs.altlinux.org/ru-RU/alt-workstation/10.1/html-single/alt-workstation/index.html#idm45860460701600)
 
 ## Installation
 
diff --git a/samples/client4yandex.php b/samples/client4yandex.php
new file mode 100644
index 0000000..a9ad324
--- /dev/null
+++ b/samples/client4yandex.php
@@ -0,0 +1,30 @@
+<?php
+require_once('./lib/nusoap.php');
+
+$wsdlurl = 'https://api-sandbox.direct.yandex.com/v5/campaigns?wsdl'; /// 'https://api-sandbox.direct.yandex.ru/live/v4/wsdl/';
+$token = 'YOUR TOKEN';
+$locale = 'en';
+
+// Initialization of NuSOAP-client
+$client = new nusoap_client($wsdlurl, 'wsdl');
+
+# Parameters of NuSOAP-client
+$client->authtype = 'bearer'; /// 'basic';
+$client->decode_utf8 = 0;
+$client->soap_defencoding = 'UTF-8';
+
+// Adding headers for SOAP-request
+$client->setCredentials('token', $token, 'bearer'); ///$client->setHeaders("<token>$token</token>\n     <locale>$locale</locale>");
+
+// Call request to server (API Yandex Direct)
+$result = $client->call(/*'GetClientInfo'*/'get', array('SelectionCriteria' => (object) array(), 'FieldNames' => array('Id', 'Name')));
+
+// Output of request and response
+echo "Request (to server):<pre>".htmlspecialchars($client->request, ENT_QUOTES)."</pre>";
+echo "Response (from server):<pre>".htmlspecialchars($client->response, ENT_QUOTES)."</pre>";
+
+
+// Output of debug info
+echo '<hr><pre>'.htmlspecialchars($client->debug_str, ENT_QUOTES).'</pre>';
+
+?>
diff --git a/src/nusoap.php b/src/nusoap.php
index 28650d1..c0da0d2 100755
--- a/src/nusoap.php
+++ b/src/nusoap.php
@@ -2546,8 +2546,14 @@ function connect($connection_timeout = 0, $response_timeout = 30)
                 $this->setCurlOption(CURLOPT_TIMEOUT, $response_timeout);
             }
 
-            if ($this->scheme == 'https') {
+	    if ($this->scheme == 'https') {
+                $this->setCurlOption(CURLOPT_SSLENGINE, 'gost');
+                $this->setCurlOption(CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1_1); // TLSv1.1 and more (TLSv1.1, TLSv1.2, TLSv1.3)
+                ///$this->setCurlOption(CURLOPT_SSL_CIPHER_LIST, 'TLSv1,ECDHE-RSA-AES128-GCM-SHA256,ECDHE-ECDSA-AES128-SHA');    
+                ///$this->setCurlOption(CURLOPT_TLS13_CIPHERS, 'GOST2012-GOST8912-GOST8912:GOST2001-GOST89-GOST89:DES-CBC3-SHA:IDEA-CBC-MD5:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-DSS-AES256-GCM-SHA384:DHE-RSA-AES256-GCM-SHA384:ECDH-RSA-AES256-GCM-SHA384:ECDH-ECDSA-AES256-GCM-SHA384:AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:DHE-RSA-AES128-GCM-SHA256:ECDH-RSA-AES128-GCM-SHA256:ECDH-ECDSA-AES128-GCM-SHA256:AES128-GCM-SHA256:TLS_AES_256_GCM_SHA384'); /////
                 $this->debug('set cURL SSL verify options');
+                ///$this->setCurlOption(CURLOPT_SSLCERTTYPE, 'CERT_SHA1_HASH_PROP_ID:CERT_SYSTEM_STORE_CURRENT_USER:MY');
+                ///$this->setCurlOption(CURLOPT_SSLCERT, '53be6850031bf03bff056fd5215a46c07b2248d6');
                 // recent versions of cURL turn on peer/host checking by default,
                 // while PHP binaries are not compiled with a default location for the
                 // CA cert bundle, so disable peer/host checking.
@@ -2692,7 +2698,7 @@ function sendHTTPS($data, $timeout = 0, $response_timeout = 30, $cookies = NULL)
      *
      * @param    string $username
      * @param    string $password
-     * @param    string $authtype (basic|digest|certificate|ntlm)
+     * @param    string $authtype (basic|bearer|digest|certificate|ntlm)
      * @param    array $digestRequest (keys must be nonce, nc, realm, qop)
      * @param    array $certRequest (keys must be cainfofile (optional), sslcertfile, sslkeyfile, passphrase, certpassword (optional), verifypeer (optional), verifyhost (optional): see corresponding options in cURL docs)
      * @access   public
@@ -2706,6 +2712,8 @@ function setCredentials($username, $password, $authtype = 'basic', $digestReques
         // cf. RFC 2617
         if ($authtype == 'basic') {
             $this->setHeader('Authorization', 'Basic ' . base64_encode(str_replace(':', '', $username) . ':' . $password));
+        } elseif ($authtype == 'bearer') {
+            $this->setHeader('Authorization', 'Bearer ' . (isset($password) ? $password : $username));
         } elseif ($authtype == 'digest') {
             if (isset($digestRequest['nonce'])) {
                 $digestRequest['nc'] = isset($digestRequest['nc']) ? $digestRequest['nc']++ : 1;
@@ -3001,7 +3009,7 @@ function sendRequest($data, $cookies = null)
             //$this->setCurlOption(CURLOPT_CUSTOMREQUEST, $this->outgoing_payload);
             $curl_headers = array();
             foreach ($this->outgoing_headers as $k => $v) {
-                if ($k == 'Connection' || $k == 'Content-Length' || $k == 'Host' || $k == 'Authorization' || $k == 'Proxy-Authorization') {
+		    if ($k == 'Connection' || $k == 'Content-Length' || $k == 'Host' || /*$k == 'Authorization' ||*/ $k == 'Proxy-Authorization') {
                     $this->debug("Skip cURL header $k: $v");
                 } else {
                     $curl_headers[] = "$k: $v";