我正在尝试对JWT令牌进行签名，收到以下错误

io.jsonwebtoken.security.InvalidKeyException: JWT standard signing algorithms require either 1) a SecretKey for HMAC-SHA algorithms or 2) a private RSAKey for RSA algorithms or 3) a private ECKey for Elliptic Curve algorithms.  The specified key is of type sun.security.pkcs11.P11Key$P11PrivateKey

发生此错误的代码

public static String createJwtToken(Key privKey, String iss, String[] roles) {
        long nowMs = System.currentTimeMillis();
        long ttl = 60*60*1000; // 1 hour
        Date now = new Date(nowMs);
        Date exp = new Date(nowMs+ttl);
        return "Bearer " + Jwts.builder()
                .setHeaderParam("typ", "JWT")
                .claim("roles", roles)
                .setIssuer(iss).setAudience("DRF")
                .setIssuedAt(now)
                .setExpiration(exp)
                .signWith(privKey)
                .compact();
    }

私钥是ECDSA密钥。从文件中读取字节，然后使用此代码创建PrivateKey对象

KeyFactory kf = KeyFactory.getInstance("EC");
     EncodedKeySpec keySpec = new PKCS8EncodedKeySpec(keyBytes);
     PrivateKey privateKey = kf.generatePrivate(keySpec);

在RHEL 7上使用Java 8没有问题。我已经升级到RHEL 8（没有其他更改），现在看到了问题。我也试过使用Java 11，没有任何变化。我用openjdk