Package org.mozilla.jss.asn1

Class SET

java.lang.Object
org.mozilla.jss.asn1.SET
All Implemented Interfaces:
ASN1Value
Direct Known Subclasses:
SEQUENCE
public class SET extends Object implements ASN1Value
An ASN.1 SET, which is an unordered collection of ASN.1 values. It has an interface like a Java Vector, but the ordering is arbitrary. Null entries may be added; they will be skipped when encoding.

  • Field Details

    • TAG

      public static final Tag TAG

    • FORM

      protected static final Form FORM

    • elements

      protected Vector<SET.Element> elements

  • Constructor Details

    • SET

      public SET()

  • Method Details

    • getTag

      public Tag getTag()
      Description copied from interface: ASN1Value
      Returns the base tag for this type, not counting any tags that may be imposed on it by its context.
      Specified by:
      getTag in interface ASN1Value
      Returns:
      Base tag.

    • addElement

      private void addElement(SET.Element e)

    • insertElementAt

      private void insertElementAt(SET.Element e, int index)

    • addElement

      public void addElement(ASN1Value v)
      Adds an element to this SET.
      Parameters:
      v - Element.

    • addElement

      public void addElement(Tag implicitTag, ASN1Value v)
      Adds an element to this SET with the given implicit tag. For example, if the ASN.1 were: 
        MyType ::= SET {
      item        [0] IMPLICIT INTEGER,
      ... }
      then the "item" element could be added (with a sample value of 45) to the SET with: 
       myTypeInstance.addElement(new Tag(0), new INTEGER(45));
      Parameters:
      implicitTag - Implicit tag.
      v - Element.

    • insertElementAt

      public void insertElementAt(ASN1Value v, int index)
      Inserts an element at the given index.
      Parameters:
      v - Element.
      index - Index.

    • insertElementAt

      public void insertElementAt(Tag implicitTag, ASN1Value v, int index)
      Inserts an element with the given implicit tag at the given index.
      Parameters:
      implicitTag - Implicit tag.
      v - Element.
      index - Index.

    • elementAt

      public ASN1Value elementAt(int index)
      Returns the element at the given index in the SET.
      Parameters:
      index - Index.
      Returns:
      Element.

    • tagAt

      public Tag tagAt(int index)
      Returns the tag of the element at the given index. If the element has an implicit tag, that is returned. Otherwise, the tag of the underlying type is returned.
      Parameters:
      index - Index.
      Returns:
      Tag.

    • elementWithTag

      public ASN1Value elementWithTag(Tag tag)
      Returns the element with the given Tag, or null if no element exists with the given tag.
      Parameters:
      tag - Tag.
      Returns:
      Element.

    • size

      public int size()
      Returns:
      The number of elements in this SET.

    • removeAllElements

      public void removeAllElements()
      Removes all elements from this SET.

    • removeElementAt

      public void removeElementAt(int index)
      Removes the element from the specified index.
      Parameters:
      index - Index.

    • encode

      public void encode(OutputStream ostream) throws IOException
      Writes the DER encoding to the given output stream.
      Specified by:
      encode in interface ASN1Value
      Parameters:
      ostream - Output stream.
      Throws:
      IOException - If an error occurred.

    • encode

      public void encode(Tag implicitTag, OutputStream ostream) throws IOException
      Writes the DER encoding to the given output stream, using the given implicit tag. To satisfy DER encoding rules, the elements will be re-ordered either by tag or lexicographically.
      Specified by:
      encode in interface ASN1Value
      Parameters:
      implicitTag - Implicit tag.
      ostream - Output stream.
      Throws:
      IOException - If an error occurred.

    • BERencode

      public void BERencode(Tag implicitTag, OutputStream ostream) throws IOException
      Encodes this SET without re-ordering it. This may violate DER, but it is within BER.
      Parameters:
      implicitTag - Implicit tag.
      ostream - Output stream.
      Throws:
      IOException - If an error occurred.

    • insertInOrder

      private static void insertInOrder(Vector<byte[]> encs, byte[] enc)

    • insertInOrder

      private static void insertInOrder(Vector<byte[]> encs, byte[] enc, Vector<Integer> tags, int tag)

    • compare

      private static int compare(byte[] left, byte[] right)

    • main

      public static void main(String[] args)