org.ietf.jgss

Class Oid


  • public class Oid
extends Object
    This class represents Universal Object Identifiers (Oids) and their associated operations.

    Oids are hierarchically globally-interpretable identifiers used within the GSS-API framework to identify mechanisms and name formats.

    The structure and encoding of Oids is defined in ISOIEC-8824 and ISOIEC-8825. For example the Oid representation of Kerberos V5 mechanism is "1.2.840.113554.1.2.2"

    The GSSName name class contains public static Oid objects representing the standard name types defined in GSS-API.

    Since:
    1.4

    • Constructor Summary

      Constructors

      Constructor and Description
      Oid(byte[] data)
      Creates an Oid object from its ASN.1 DER encoding.
      Oid(InputStream derOid)
      Creates an Oid object from its ASN.1 DER encoding.
      Oid(String strOid)
      Constructs an Oid object from a string representation of its integer components.

    • Method Summary

      Modifier and Type Method and Description
      boolean containedIn(Oid[] oids)
      A utility method to test if this Oid value is contained within the supplied Oid array.
      boolean equals(Object other)
      Tests if two Oid objects represent the same Object identifier value.
      byte[] getDER()
      Returns the full ASN.1 DER encoding for this oid object, which includes the tag and length.
      int hashCode()
      Returns a hashcode value for this Oid.
      String toString()
      Returns a string representation of the oid's integer components in dot separated notation.

    • Constructor Detail

      • Oid

        public Oid(String strOid)
    throws GSSException
        Constructs an Oid object from a string representation of its integer components.
        Parameters:
        strOid - the dot separated string representation of the oid. For instance, "1.2.840.113554.1.2.2".
        Throws:
        GSSException - may be thrown when the string is incorrectly formatted

      • Oid

        public Oid(InputStream derOid)
    throws GSSException
        Creates an Oid object from its ASN.1 DER encoding. This refers to the full encoding including tag and length. The structure and encoding of Oids is defined in ISOIEC-8824 and ISOIEC-8825. This method is identical in functionality to its byte array counterpart.
        Parameters:
        derOid - stream containing the DER encoded oid
        Throws:
        GSSException - may be thrown when the DER encoding does not follow the prescribed format.

      • Oid

        public Oid(byte[] data)
    throws GSSException
        Creates an Oid object from its ASN.1 DER encoding. This refers to the full encoding including tag and length. The structure and encoding of Oids is defined in ISOIEC-8824 and ISOIEC-8825. This method is identical in functionality to its InputStream conterpart.
        Parameters:
        data - byte array containing the DER encoded oid
        Throws:
        GSSException - may be thrown when the DER encoding does not follow the prescribed format.

    • Method Detail

      • toString

        public String toString()
        Returns a string representation of the oid's integer components in dot separated notation.
        Overrides:
        toString in class  Object
        Returns:
        string representation in the following format: "1.2.3.4.5"

      • equals

        public boolean equals(Object other)
        Tests if two Oid objects represent the same Object identifier value.
        Overrides:
        equals in class  Object
        Parameters:
        other - the Oid object that has to be compared to this one
        Returns:
        true if the two Oid objects represent the same value, false otherwise.
        See Also:
        Object.hashCode(), HashMap

      • getDER

        public byte[] getDER()
              throws GSSException
        Returns the full ASN.1 DER encoding for this oid object, which includes the tag and length.
        Returns:
        byte array containing the DER encoding of this oid object.
        Throws:
        GSSException - may be thrown when the oid can't be encoded

      • containedIn

        public boolean containedIn(Oid[] oids)
        A utility method to test if this Oid value is contained within the supplied Oid array.
        Parameters:
        oids - the array of Oid's to search
        Returns:
        true if the array contains this Oid value, false otherwise