char[] psw = properties.getKeyPassword().toCharArray();
        String alias = properties.getKeyAlias();

        if (!JCPXMLDSigInit.isInitialized()) {
            JCPXMLDSigInit.init();
        }

        // Инициализация ключевого контейнера.
        String storename = JCP.HD_STORE_NAME;
        KeyStore keyStore;
        keyStore = KeyStore.getInstance(storename);
        keyStore.load(null, null);

        PrivateKey privateKey = (PrivateKey) keyStore.getKey(alias, psw);
        if (privateKey == null) {
            throw new Exception("Key named \"" + alias + "\" not found");
        }

        X509Certificate cert = (X509Certificate) keyStore.getCertificate(alias);
        if (cert == null) {
            throw new Exception("Certificate named \"" + alias + "\" not found");
        }

HttpClient httpClient = HttpClient
                .create()
                .tcpConfiguration(
                        tcpClient -> tcpClient.proxy(
                                ops -> ops.type(ProxyProvider.Proxy.HTTP)
                                        .host(properties.getProxyHost())
                                        .port(properties.getProxyPort())
                                        .username(properties.getProxyUser())
                                        .password(s -> {
                                            return properties.getProxyPassword();
                                        })

                        )
                ).secure(sslSpec -> {
                    sslSpec.sslContext(SslContextBuilder
                            .forClient()
                            .keyManager(privateKey,properties.getKeyPassword(),cert)
                            .trustManager(cert)
                            .protocols("GostTLS")
                    );
                });