Package io.anyline.nfc.bouncycastle.asn1

Class ASN1Set

  • All Implemented Interfaces:
    io.anyline.nfc.bouncycastle.asn1.ASN1Encodable , io.anyline.nfc.bouncycastle.util.Encodable , io.anyline.nfc.bouncycastle.util.Iterable , java.lang.Iterable 
    
public abstract class ASN1Set
extends ASN1Primitive implements Iterable<T>

    ASN.1 SET and SET OF constructs.

    Note: This does not know which syntax the set is! (The difference: ordering of SET elements or not ordering.)

    DER form is always definite form length fields, while BER support uses indefinite form.

    The CER form support does not exist.

    8.11 Encoding of a set value8.11.1 The encoding of a set value shall be constructed

    8.11.2 The contents octets shall consist of the complete encoding of a data value from each of the types listed in the ASN.1 definition of the set type, in an order chosen by the sender, unless the type was referenced with the keyword OPTIONAL or the keyword DEFAULT.

    8.11.3 The encoding of a data value may, but need not, be present for a type which was referenced with the keyword OPTIONAL or the keyword DEFAULT.

    NOTE — The order of data values in a set value is not significant, and places no constraints on the order during transfer 8.12 Encoding of a set-of value

    8.12.1 The encoding of a set-of value shall be constructed.

    8.12.2 The text of 8.10.2 applies: The contents octets shall consist of zero, one or more complete encodings of data values from the type listed in the ASN.1 definition.

    8.12.3 The order of data values need not be preserved by the encoding and subsequent decoding.

    9.1 Length forms If the encoding is constructed, it shall employ the indefinite-length form. If the encoding is primitive, it shall include the fewest length octets necessary. [Contrast with 8.1.3.2 b).] 9.3 Set components The encodings of the component values of a set value shall appear in an order determined by their tags as specified in 8.6 of ITU-T Rec. X.680 | ISO/IEC 8824-1. Additionally, for the purposes of determining the order in which components are encoded when one or more component is an untagged choice type, each untagged choice type is ordered as though it has a tag equal to that of the smallest tag in that choice type or any untagged choice types nested within. 10.1 Length forms The definite form of length encoding shall be used, encoded in the minimum number of octets. [Contrast with 8.1.3.2 b).] 10.3 Set components The encodings of the component values of a set value shall appear in an order determined by their tags as specified in 8.6 of ITU-T Rec. X.680 | ISO/IEC 8824-1. NOTE — Where a component of the set is an untagged choice type, the location of that component in the ordering will depend on the tag of the choice component being encoded. 11.5 Set and sequence components with default value The encoding of a set value or sequence value shall not include an encoding for any component value which is equal to its default value. 11.6 Set-of components

    The encodings of the component values of a set-of value shall appear in ascending order, the encodings being compared as octet strings with the shorter components being padded at their trailing end with 0-octets.

    NOTE — The padding octets are for comparison purposes only and do not appear in the encodings.

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Class Description

    • Field Summary

      Fields 
      Modifier and Type Field Description

    • Constructor Summary

      Constructors 
      Constructor Description

    • Enum Constant Summary

      Enum Constants 
      Enum Constant Description

    • Method Summary

      Modifier and Type Method Description
      static ASN1Set getInstance(Object obj) return an ASN1Set from the given object.
      static ASN1Set getInstance(ASN1TaggedObject taggedObject, boolean explicit) Return an ASN1 set from a tagged object.
      Enumeration getObjects()
      ASN1Encodable getObjectAt(int index) return the object at the set position indicated by index.
      int size() return the number of objects in this set.
      Array<ASN1Encodable> toArray()
      ASN1SetParser parser()
      int hashCode()
      String toString()
      Iterator<ASN1Encodable> iterator() Returns an iterator over a set of elements of type T.

      • Methods inherited from class io.anyline.nfc.bouncycastle.asn1.ASN1Primitive

        encodeTo, encodeTo, equals, equals, equals, fromByteArray, toASN1Primitive

      • Methods inherited from class io.anyline.nfc.bouncycastle.asn1.ASN1Object

        equals, getEncoded, getEncoded

      • Methods inherited from class java.lang.Iterable

        forEach, iterator, spliterator

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

    • Method Detail

      • getInstance

         static ASN1Set getInstance(Object obj)

        return an ASN1Set from the given object.

        Parameters:
        obj - the object we want converted.
        Returns:

        an ASN1Set instance, or null.

      • getInstance

         static ASN1Set getInstance(ASN1TaggedObject taggedObject, boolean explicit)

        Return an ASN1 set from a tagged object. There is a special case here, if an object appears to have been explicitly tagged on reading but we were expecting it to be implicitly tagged in the normal course of events it indicates that we lost the surrounding set - so we need to add it back (this will happen if the tagged object is a sequence that contains other sequences). If you are dealing with implicitly tagged sets you really should be using this method.

        Parameters:
        taggedObject - the tagged object.
        explicit - true if the object is meant to be explicitly tagged false otherwise.
        Returns:

        an ASN1Set instance.

      • getObjectAt

         ASN1Encodable getObjectAt(int index)

        return the object at the set position indicated by index.

        Parameters:
        index - the set number (starting at zero) of the object
        Returns:

        the object at the set position indicated by index.

      • size

         int size()

        return the number of objects in this set.

        Returns:

        the number of objects in this set.