# javax.security.auth.kerberos

***

**1. Kerberos Configuration:**

```java
import javax.security.auth.kerberos.*;

public class KerberosConfiguration {

    public static void main(String[] args) {
        KerberosTicket kerberosTicket = KerberosTicket.newBuilder()
                .setServiceName("service-name")
                .setPrincipalName("principal-name")
                .setStartTime(new Date())
                .setEndTime(new Date())
                .build();

        kerberosTicket.getTicket(); // Returns the Kerberos ticket
        kerberosTicket.getEncryptedPart(); // Returns the encrypted part of the ticket
        kerberosTicket.getClientPrincipal(); // Returns the client principal
        kerberosTicket.getServerPrincipal(); // Returns the server principal
        kerberosTicket.getFlags(); // Returns the flags associated with the ticket
        kerberosTicket.getKerberosPrincipal(); // Returns the Kerberos principal
        kerberosTicket.renew(); // Renews the ticket
    }
}
```

**2. Kerberos Initialization:**

```java
import javax.security.auth.kerberos.*;

public class KerberosInitialization {

    public static void main(String[] args) {
        KerberosPrincipal kerberosPrincipal = new KerberosPrincipal("principal-name");
        kerberosPrincipal.getName(); // Returns the name of the principal
        KerberosKey kerberosKey = new KerberosKey("key-name");
        kerberosKey.getAlgorithm(); // Returns the algorithm of the key
        kerberosKey.getEncoded(); // Returns the encoded form of the key
        KerberosTicket kerberosTicket = new KerberosTicket("ticket-name");
        kerberosTicket.getClient(); // Returns the client principal
        kerberosTicket.getServer(); // Returns the server principal
        kerberosTicket.getExpiration(); // Returns the expiration date of the ticket
        kerberosTicket.getFlags(); // Returns the flags associated with the ticket
    }
}
```

**3. Kerberos Authentication:**

```java
import javax.security.auth.kerberos.*;

public class KerberosAuthentication {

    public static void main(String[] args) {
        String principalName = "principal-name";
        String serviceName = "service-name";
        KerberosService kerberosService = KerberosService.getInstance(serviceName);
        KerberosTicket kerberosTicket = kerberosService.getTicket(principalName);
        kerberosTicket.getAuthenticator(); // Returns the authenticator associated with the ticket
        kerberosTicket.getClient(); // Returns the client principal
        kerberosTicket.getServer(); // Returns the server principal
        kerberosTicket.getFlags(); // Returns the flags associated with the ticket
    }
}
```

**4. Kerberos Authorization:**

```java
import javax.security.auth.kerberos.*;

public class KerberosAuthorization {

    public static void main(String[] args) {
        String principalName = "principal-name";
        String serviceName = "service-name";
        KerberosPrincipal kerberosPrincipal = new KerberosPrincipal(principalName);
        kerberosPrincipal.getName(); // Returns the name of the principal
        KerberosService kerberosService = KerberosService.getInstance(serviceName);
        kerberosService.checkPermission(kerberosPrincipal, "permission-name");
    }
}
```

**5. Kerberos Token Retrieval:**

```java
import javax.security.auth.kerberos.*;

public class KerberosTokenRetrieval {

    public static void main(String[] args) {
        String principalName = "principal-name";
        String keyName = "key-name";
        KerberosService kerberosService = KerberosService.getInstance("service-name");
        KerberosToken kerberosToken = kerberosService.getToken(principalName, keyName);
        kerberosToken.getTicket(); // Returns the Kerberos ticket
        kerberosToken.getService(); // Returns the service principal
        kerberosToken.getExpiration(); // Returns the expiration date of the token
    }
}
```

**6. Kerberos Service Initialization:**

```java
import javax.security.auth.kerberos.*;

public class KerberosServiceInitialization {

    public static void main(String[] args) {
        String principalName = "principal-name";
        String keyName = "key-name";
        KerberosService kerberosService = KerberosService.getInstance(principalName, keyName);
        kerberosService.getPrincipal(); // Returns the Kerberos principal
        kerberosService.getKey(); // Returns the Kerberos key
    }
}
```

**7. Kerberos Service Ticket Retrieval:**

```java
import javax.security.auth.kerberos.*;

public class KerberosServiceTicketRetrieval {

    public static void main(String[] args) {
        String principalName = "principal-name";
        String serviceName = "service-name";
        KerberosService kerberosService = KerberosService.getInstance(serviceName);
        KerberosTicket kerberosTicket = kerberosService.getTicket(principalName);
        kerberosTicket.getClient(); // Returns the client principal
        kerberosTicket.getServer(); // Returns the server principal
        kerberosTicket.getFlags(); // Returns the flags associated with the ticket
    }
}
```

**8. Kerberos Service Authentication:**

```java
import javax.security.auth.kerberos.*;

public class KerberosServiceAuthentication {

    public static void main(String[] args) {
        String principalName = "principal-name";
        String serviceName = "service-name";
        KerberosService kerberosService = KerberosService.getInstance(serviceName);
        KerberosToken kerberosToken = kerberosService.getToken(principalName);
        kerberosToken.getAuthenticator(); // Returns the authenticator associated with the token
        kerberosToken.getClient(); // Returns the client principal
        kerberosToken.getServer(); // Returns the server principal
        kerberosToken.getFlags(); // Returns the flags associated with the token
    }
}
```

**9. Kerberos Ticket Renewal:**

```java
import javax.security.auth.kerberos.*;

public class KerberosTicketRenewal {

    public static void main(String[] args) {
        String principalName = "principal-name";
        String serviceName = "service-name";
        KerberosService kerberosService = KerberosService.getInstance(serviceName);
        KerberosTicket kerberosTicket = kerberosService.getTicket(principalName);
        kerberosTicket.renew(); // Renews the ticket
    }
}
```

**10. Kerberos Ticket Forwarding:**

```java
import javax.security.auth.kerberos.*;

public class KerberosTicketForwarding {

    public static void main(String[] args) {
        String principalName = "principal-name";
        String serviceName = "service-name";
        KerberosService kerberosService = KerberosService.getInstance(serviceName);
        KerberosTicket kerberosTicket = kerberosService.getTicket(principalName);
        kerberosTicket.forward(); // Forwards the ticket
    }
}
```

**11. Kerberos Ticket Validation:**

```java
import javax.security.auth.kerberos.*;

public class KerberosTicketValidation {

    public static void main(String[] args) {
        String principalName = "principal-name";
        String serviceName = "service-name";
        KerberosService kerberosService = KerberosService.getInstance(serviceName);
        KerberosTicket kerberosTicket = kerberosService.getTicket(principalName);
        kerberosTicket.validate(); // Validates the ticket
    }
}
```

**12. Kerberos Ticket Cancellation:**

```java
import javax.security.auth.kerberos.*;

public class KerberosTicketCancellation {

    public static void main(String[] args) {
        String principalName = "principal-name";
        String serviceName = "service-name";
        KerberosService kerberosService = KerberosService.getInstance(serviceName);
        KerberosTicket kerberosTicket = kerberosService.getTicket(principalName);
        kerberosTicket.cancel(); // Cancels the ticket
    }
}
```

**13. Kerberos Credential Retrieval:**

```java
import javax.security.auth.kerberos.*;

public class KerberosCredentialRetrieval {

    public static void main(String[] args) {
        String principalName = "principal-name";
        String keyName = "key-name";
        KerberosService kerberosService = KerberosService.getInstance(principalName, keyName);
        KerberosCredential kerberosCredential = kerberosService.getCredential();
        kerberosCredential.getPrincipal(); // Returns the Kerberos principal
        kerberosCredential.getKeys(); // Returns the Kerberos keys
    }
}
```

**14. Kerberos Credential Validation:**

```java
import javax.security.auth.kerberos.*;

public class KerberosCredentialValidation {

    public static void main(String[] args) {
        String principalName = "principal-name";
        String keyName = "key-name";
        KerberosService kerberosService = KerberosService.getInstance(principalName, keyName);
        KerberosCredential kerberosCredential = kerberosService.getCredential();
        kerberosCredential.validate(); // Validates the credential
    }
}
```

**15. Kerberos Credential Renewal:**

```java
import javax.security.auth.kerberos.*;

public class KerberosCredentialRenewal {

    public static void main(String[] args) {
        String principalName = "principal-name";
        String keyName = "key-name";
        KerberosService kerberosService = KerberosService.getInstance(principalName, keyName);
        KerberosCredential kerberosCredential = kerberosService.getCredential();
        kerberosCredential.renew(); // Renews the credential
    }
}
```

**16. Kerberos Credential Cancellation:**

```java
import javax.security.auth.kerberos.*;

public class KerberosCredentialCancellation {

    public static void main(String[] args) {
        String principalName = "principal-name

```