Lookking for support Authentication with Client Certificate and Key about spring-vault HOT 4 CLOSED

try {
                    CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509");
                    TrustManager[] trustManagers = null;
                    clientPemUTF8 = inputStreamToUTF8(clientResource.getInputStream());
                    clientKeyPemUTF8 = inputStreamToUTF8(resource.getInputStream());
                    KeyManager[] keyManagers = null;

                    KeyManagerFactory keyManagerFactory = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
                    ByteArrayInputStream pem = new ByteArrayInputStream(clientPemUTF8.getBytes(StandardCharsets.UTF_8));

                    X509Certificate clientCertificate;
                    try {
                        clientCertificate = (X509Certificate) certificateFactory.generateCertificate(pem);
                    } catch (Throwable var14) {
                        try {
                            pem.close();
                        } catch (Throwable var12) {
                            var14.addSuppressed(var12);
                        }

                        throw var14;
                    }

                    pem.close();
                    String strippedKey = clientKeyPemUTF8.replace("-----BEGIN PRIVATE KEY-----", "").replace("-----END PRIVATE KEY-----", "");
                    byte[] keyBytes = Base64.getMimeDecoder().decode(strippedKey);
                    PKCS8EncodedKeySpec pkcs8EncodedKeySpec = new PKCS8EncodedKeySpec(keyBytes);
                    KeyFactory var9 = KeyFactory.getInstance("RSA");
                    PrivateKey privateKey = var9.generatePrivate(pkcs8EncodedKeySpec);
                    KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType());
                    keyStore.load((InputStream) null, "password".toCharArray());
                    keyStore.setCertificateEntry("clientCert", clientCertificate);
                    keyStore.setKeyEntry("key", privateKey, "password".toCharArray(), new Certificate[]{clientCertificate});
                    keyManagerFactory.init(keyStore, "password".toCharArray());
                    keyManagers = keyManagerFactory.getKeyManagers();

                    SslConfiguration.KeyConfiguration.of("".toCharArray(), keyStore.getCertificateAlias(clientCertificate));
                    return SslConfiguration.forTrustStore(SslConfiguration.KeyStoreConfiguration.of(clientResource).withStoreType( PEM_KEYSTORE_TYPE)).forKeyStore(new FileSystemResource(System.getProperty("weblogic.security.CustomTrustKeyStoreFileName")),
                            "changeit".toCharArray(),
                            SslConfiguration.KeyConfiguration.of("password".toCharArray(),
                                    keyStore.getCertificateAlias(clientCertificate)));
                } catch (Exception e) {
                    e.printStackTrace();

                    return SslConfiguration.unconfigured();
                }