private static KeyStore keyStore(String pathTofile,
                                     char[] password) throws Exception {
        KeyStore keyStore = KeyStore.getInstance("JKS");
        File initialFile = new File(pathTofile);

        try (InputStream in = new FileInputStream(initialFile)) {
            keyStore.load(in, password);
        }
        return keyStore;
    }

public RestTemplate createRestTemplate(RestTemplateBuilder builder) throws Exception {
        char[] password = "password".toCharArray();
        SSLContext sslContext = SSLContextBuilder.create()
            .loadKeyMaterial(keyStore(keyStorePath, password), password)
            .loadTrustMaterial(null, new TrustSelfSignedStrategy()).build();
        return builder
            .requestFactory(() -> new HttpComponentsClientHttpRequestFactory(
                HttpClients
                    .custom()
                    .setSSLContext(sslContext)
                    .build())
            )
            .build();
    }