org.bouncycastle.asn1

Class ASN1TaggedObject

public abstract class ASN1TaggedObject extends ASN1Object implements ASN1TaggedObjectParser

ASN.1 TaggedObject - in ASN.1 nottation this is any object proceeded by a [n] where n is some number - these are assume to follow the construction rules (as with sequences).
Constructor Summary
ASN1TaggedObject(int tagNo, DEREncodable obj)
Create a tagged object in the explicit style.
ASN1TaggedObject(boolean explicit, int tagNo, DEREncodable obj)
Create a tagged object with the style given by the value of explicit.
Method Summary
static ASN1TaggedObjectgetInstance(ASN1TaggedObject obj, boolean explicit)
static ASN1TaggedObjectgetInstance(Object obj)
DERObjectgetObject()
return whatever was following the tag.
DEREncodablegetObjectParser(int tag, boolean isExplicit)
Return the object held in this tagged object as a parser assuming it has the type of the passed in tag.
intgetTagNo()
inthashCode()
booleanisEmpty()
booleanisExplicit()
return whether or not the object may be explicitly tagged.
StringtoString()

Constructor Detail

ASN1TaggedObject

public ASN1TaggedObject(int tagNo, DEREncodable obj)
Create a tagged object in the explicit style.

Parameters: tagNo the tag number for this object. obj the tagged object.

ASN1TaggedObject

public ASN1TaggedObject(boolean explicit, int tagNo, DEREncodable obj)
Create a tagged object with the style given by the value of explicit.

If the object implements ASN1Choice the tag style will always be changed to explicit in accordance with the ASN.1 encoding rules.

Parameters: explicit true if the object is explicitly tagged. tagNo the tag number for this object. obj the tagged object.

Method Detail

getInstance

public static ASN1TaggedObject getInstance(ASN1TaggedObject obj, boolean explicit)

getInstance

public static ASN1TaggedObject getInstance(Object obj)

getObject

public DERObject getObject()
return whatever was following the tag.

Note: tagged objects are generally context dependent if you're trying to extract a tagged object you should be going via the appropriate getInstance method.

getObjectParser

public DEREncodable getObjectParser(int tag, boolean isExplicit)
Return the object held in this tagged object as a parser assuming it has the type of the passed in tag. If the object doesn't have a parser associated with it, the base object is returned.

getTagNo

public int getTagNo()

hashCode

public int hashCode()

isEmpty

public boolean isEmpty()

isExplicit

public boolean isExplicit()
return whether or not the object may be explicitly tagged.

Note: if the object has been read from an input stream, the only time you can be sure if isExplicit is returning the true state of affairs is if it returns false. An implicitly tagged object may appear to be explicitly tagged, so you need to understand the context under which the reading was done as well, see getObject below.

toString

public String toString()