some problem in use k3s.yaml establish connection

[liujun69]

k3s version:v1.22.11+k3s1
fabric8 version:5.12.2
Java version:1.8.0_45
Get the client with the following code:
String adminConfData = IoUtil.readUtf8(new FileInputStream(new File("/etc/rancher/k3s/k3s.yaml"))); Config config = Config.fromKubeconfig(adminConfData); config.setNamespace(null); return new DefaultKubernetesClient(config);
Throw the following exception:
Caused by: java.io.IOException: Invalid DER: object is not integer at io.fabric8.kubernetes.client.internal.PKCS1Util$Asn1Object.getInteger(PKCS1Util.java:125) ~[kubernetes-client-4.4.1.jar:na] at io.fabric8.kubernetes.client.internal.PKCS1Util.next(PKCS1Util.java:55) ~[kubernetes-client-4.4.1.jar:na] at io.fabric8.kubernetes.client.internal.PKCS1Util.decodePKCS1(PKCS1Util.java:46) ~[kubernetes-client-4.4.1.jar:na] at io.fabric8.kubernetes.client.internal.CertUtils.handleOtherKeys(CertUtils.java:171) ~[kubernetes-client-4.4.1.jar:na] at io.fabric8.kubernetes.client.internal.CertUtils.loadKey(CertUtils.java:133) ~[kubernetes-client-4.4.1.jar:na] at io.fabric8.kubernetes.client.internal.CertUtils.createKeyStore(CertUtils.java:111) ~[kubernetes-client-4.4.1.jar:na] at io.fabric8.kubernetes.client.internal.CertUtils.createKeyStore(CertUtils.java:241) ~[kubernetes-client-4.4.1.jar:na] at io.fabric8.kubernetes.client.internal.SSLUtils.keyManagers(SSLUtils.java:128) ~[kubernetes-client-4.4.1.jar:na] at io.fabric8.kubernetes.client.internal.SSLUtils.keyManagers(SSLUtils.java:122) ~[kubernetes-client-4.4.1.jar:na] at io.fabric8.kubernetes.client.utils.HttpClientUtils.createHttpClient(HttpClientUtils.java:83) ~[kubernetes-client-4.4.1.jar:na]
Relevant codes：
`private static PrivateKey handleOtherKeys(InputStream keyInputStream, String clientKeyAlgo) throws IOException, NoSuchAlgorithmException, InvalidKeySpecException {
byte[] keyBytes = decodePem(keyInputStream);
KeyFactory keyFactory = KeyFactory.getInstance(clientKeyAlgo);

    try {
        return keyFactory.generatePrivate(new PKCS8EncodedKeySpec(keyBytes));
    } catch (InvalidKeySpecException var6) {
        RSAPrivateCrtKeySpec keySpec = PKCS1Util.decodePKCS1(keyBytes);
        return keyFactory.generatePrivate(keySpec);
    }
}`

Direct exception：
java.security.spec.InvalidKeySpecException: java.security.InvalidKeyException: IOException : version mismatch: (supported: 00, parsed: 01
Related cert data:
client-key-data: LS0tLS1CRUdJTiBFQyBQUklWQVRFIEtFWS0tLS0tCk1IY0NBUUVFSUxWWG0zYjVlekVIbWNKL1NYQnh6bUgxcnpsZUF4dXJtQjh5N0xaTnB4OHZvQW9HQ0NxR1NNNDkKQXdFSG9VUURRZ0FFUTlMc3E4WjAxOHg2Y3VQemk2aFdSVUpYeDBPaWVIemMrZlJFMlFYUEIwdWNjWTFNRWVvZgppcENENlc0NnNOM2E5RXl6UlJWUmdKekJ5YThEKzlQcGhRPT0KLS0tLS1FTkQgRUMgUFJJVkFURSBLRVktLS0tLQo=

[liujun69]

The problem resolved by config.setClientKeyAlgo("EC")