The general contract with Provider.Service.newInstance() is that the Provider.Service implementation must provide a public no-arg constructor. In some cases, like CertStore/Policy/Configuration/TerminalFactory, there needs to be a public one-arg constructor. This is controlled by the Provider.EngineDescription class.

The following Services:

    GssApiMechanism.1.2.840.113554.1.2.2
    GssApiMechanism.1.3.6.1.5.5.2

don't work because the EngineDescription that controls the GssApiMechanisms don't allow parameters:

Provider.java:

1331: addEngine("GssApiMechanism", false, null);

and thus there must be a public no-arg constructor. Looking at the jgss/SunProvider.java:

               put("GssApiMechanism.1.2.840.113554.1.2.2",
                   "sun.security.jgss.krb5.Krb5MechFactory");
               put("GssApiMechanism.1.3.6.1.5.5.2",
                   "sun.security.jgss.spnego.SpNegoMechFactory");

I see:

  public final class Krb5MechFactory implements MechanismFactory {
    public Krb5MechFactory(GSSCaller caller) {
    }

  public final class SpNegoMechFactory implements MechanismFactory {
    public SpNegoMechFactory(GSSCaller caller) {
    }

I realize that the GSSManager.getInstance() is probably what you would use to get these, but this does not follow the expected behavior of Provider.Service class.


public class NewInstance {

    public static void main(String[] args) throws Exception {

        Set<Provider.Service> p =
            Security.getProvider("SunJGSS").getServices();

        for (Provider.Service s : p) {
            try {
                s.newInstance(null);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }
}

java.security.NoSuchAlgorithmException: Error constructing implementation (algorithm: 1.2.840.113554.1.2.2, provider: SunJGSS, class: sun.security.jgss.krb5.Krb5MechFactory)
at java.security.Provider$Service.newInstance(Provider.java:1621)
at NewInstance.main(NewInstance.java:100)
Caused by: java.lang.NoSuchMethodException: sun.security.jgss.krb5.Krb5MechFactory.<init>()
at java.lang.Class.getConstructor0(Class.java:2967)
at java.lang.Class.getConstructor(Class.java:1811)
at java.security.Provider$Service.newInstance(Provider.java:1594)
... 1 more
java.security.NoSuchAlgorithmException: Error constructing implementation (algorithm: 1.3.6.1.5.5.2, provider: SunJGSS, class: sun.security.jgss.spnego.SpNegoMechFactory)
at java.security.Provider$Service.newInstance(Provider.java:1621)
at NewInstance.main(NewInstance.java:100)
Caused by: java.lang.NoSuchMethodException: sun.security.jgss.spnego.SpNegoMechFactory.<init>()
at java.lang.Class.getConstructor0(Class.java:2967)
at java.lang.Class.getConstructor(Class.java:1811)
at java.security.Provider$Service.newInstance(Provider.java:1594)
... 1 more