org.mozilla.jss.asn1

Class ANY

Implemented Interfaces:
ASN1Value

public class ANY
extends java.lang.Object
implements ASN1Value

Represents an ASN.1 ANY value. An ANY is just an arbitrary ASN.1 value. It can be thought of as the simplest implementation of the ASN1Value interface. Although they can be created from scratch (from raw BER), instances of ANY are usually found after decoding with a template that has an ANY field.

An ANY supports extracting the BER encoding, or decoding with a different template.

Nested Class Summary

static class
ANY.Template
A class for decoding ANY values from BER.

Constructor Summary

ANY(byte[] encoded)
Creates an ANY value, which is just a generic ASN.1 value.
ANY(Tag tag, byte[] encoded)
Creates an ANY value, which is just a generic ASN.1 value.

Method Summary

ASN1Value
decodeWith(ASN1Template template)
Decodes this ANY using the given template.
ASN1Value
decodeWith(Tag implicitTag, ASN1Template template)
Decodes this ANY using the given template.
void
encode(OutputStream ostream)
void
encode(Tag implicitTag, OutputStream ostream)
void
encodeWithAlternateTag(Tag alternateTag, OutputStream ostream)
Extracts the contents from the ANY and encodes them with the provided tag.
byte[]
getContents()
byte[]
getEncoded()
Returns the complete encoding of header and contents, as passed into the constructor or read from a BER input stream.
ASN1Header
getHeader()
Returns the ASN.1 header from the encoding.
Tag
getTag()
Returns the tag of this value.
static ANY.Template
getTemplate()
Returns a singleton instance of a decoding template.

Constructor Details

ANY

public ANY(byte[] encoded)
            throws InvalidBERException
Creates an ANY value, which is just a generic ASN.1 value.

Parameters:
encoded - The complete BER encoding of this value, including tag, form, length, and contents.


ANY

public ANY(Tag tag,
           byte[] encoded)
Creates an ANY value, which is just a generic ASN.1 value. This method is provided for efficiency if the tag is already known, so that we don't have to parse the encoding for it.

Parameters:
tag - The tag of this value. It must be the same as the actual tag contained in the encoding.
encoded - The complete BER encoding of this value, including tag, form, length, and contents.

Method Details

decodeWith

public ASN1Value decodeWith(ASN1Template template)
            throws InvalidBERException
Decodes this ANY using the given template. This is useful if you originally decoded something as an ANY because you didn't know what it was, but now you know what it is supposed to be.

Parameters:
template - The template to use to decode this ANY.

Returns:
The output of the given template when it is fed the encoding of this ANY.


decodeWith

public ASN1Value decodeWith(Tag implicitTag,
                            ASN1Template template)
            throws IOException,
                   InvalidBERException
Decodes this ANY using the given template. This is useful if you originally decoded something as an ANY because you didn't know what it was, but now you know what it is supposed to be.

Parameters:
implicitTag - The implicit tag for the encoding.
template - The template to use to decode this ANY.

Returns:
The output of the given template when it is fed the encoding of this ANY.


encode

public void encode(OutputStream ostream)
            throws IOException
Specified by:
encode in interface ASN1Value


encode

public void encode(Tag implicitTag,
                   OutputStream ostream)
            throws IOException
Specified by:
encode in interface ASN1Value

Parameters:
implicitTag - This parameter is ignored, because ANY values cannot have implicit tags.


encodeWithAlternateTag

public void encodeWithAlternateTag(Tag alternateTag,
                                   OutputStream ostream)
            throws IOException,
                   InvalidBERException
Extracts the contents from the ANY and encodes them with the provided tag.


getContents

public byte[] getContents()
            throws InvalidBERException


getEncoded

public byte[] getEncoded()
Returns the complete encoding of header and contents, as passed into the constructor or read from a BER input stream.


getHeader

public ASN1Header getHeader()
            throws InvalidBERException,
                   IOException
Returns the ASN.1 header from the encoding.


getTag

public Tag getTag()
Returns the tag of this value.
Specified by:
getTag in interface ASN1Value


getTemplate

public static ANY.Template getTemplate()
Returns a singleton instance of a decoding template.