Documentation

ExplicitlyTaggedObject extends ASNObject
in package

Class ExplicitlyTaggedObject decorate an inner object with an additional tag that gives information about its context specific meaning.

Explanation taken from A Layman's Guide to a Subset of ASN.1, BER, and DER:

An RSA Laboratories Technical Note Burton S. Kaliski Jr. Revised November 1, 1993

[...] Explicitly tagged types are derived from other types by adding an outer tag to the underlying type. In effect, explicitly tagged types are structured types consisting of one component, the underlying type. Explicit tagging is denoted by the ASN.1 keywords [class number] EXPLICIT (see Section 5.2). [...]

Tags
see
http://luca.ntop.org/Teaching/Appunti/asn1.html

Table of Contents

Properties

$contentLength  : mixed
$decoratedObjects  : array<string|int, ASNObject>
$nrOfLengthOctets  : mixed
$tag  : mixed

Methods

__construct()  : mixed
__toString()  : mixed
fromBinary()  : ASNObject
Parse an instance of this class from its binary DER encoded representation.
getBinary()  : string
Encode this object using DER encoding.
getContent()  : mixed
Return the content of this object in a non encoded form.
getIdentifier()  : string
Returns all identifier octets. If an inheriting class models a tag with the long form identifier format, it MUST reimplement this method to return all octets of the identifier.
getObjectLength()  : mixed
Returns the length of the whole object (including the identifier and length octets).
getTag()  : mixed
getType()  : int
Return the object type octet.
getTypeName()  : mixed
Returns the name of the ASN.1 Type of this object.
calculateContentLength()  : int
Must return the number of octets of the content part.
getContentLength()  : mixed
getEncodedValue()  : string
Encode the object using DER encoding.
getNumberOfLengthOctets()  : mixed
parseBinaryIdentifier()  : mixed
parseContentLength()  : mixed
parseIdentifier()  : mixed
setContentLength()  : mixed
createLengthPart()  : mixed

Properties

$nrOfLengthOctets

private mixed $nrOfLengthOctets

Methods

fromBinary()

Parse an instance of this class from its binary DER encoded representation.

public static fromBinary(mixed &$binaryData[, mixed &$offsetIndex = 0 ]) : ASNObject
Parameters
$binaryData : mixed
$offsetIndex : mixed = 0
Return values
ASNObject

getBinary()

Encode this object using DER encoding.

public getBinary() : string
Return values
string —

the full binary representation of the complete object

getContent()

Return the content of this object in a non encoded form.

public getContent() : mixed

This can be used to print the value in human readable form.

getIdentifier()

Returns all identifier octets. If an inheriting class models a tag with the long form identifier format, it MUST reimplement this method to return all octets of the identifier.

public getIdentifier() : string
Return values
string —

Identifier as a set of octets

getObjectLength()

Returns the length of the whole object (including the identifier and length octets).

public getObjectLength() : mixed

getType()

Return the object type octet.

public getType() : int

This should use the class constants of Identifier.

Return values
int

calculateContentLength()

Must return the number of octets of the content part.

protected calculateContentLength() : int
Return values
int

getContentLength()

protected getContentLength() : mixed

getEncodedValue()

Encode the object using DER encoding.

protected getEncodedValue() : string
Return values
string —

the binary representation of an objects value

getNumberOfLengthOctets()

protected getNumberOfLengthOctets([mixed $contentLength = null ]) : mixed
Parameters
$contentLength : mixed = null

parseBinaryIdentifier()

protected static parseBinaryIdentifier(mixed $binaryData, mixed &$offsetIndex) : mixed
Parameters
$binaryData : mixed
$offsetIndex : mixed

parseContentLength()

protected static parseContentLength(mixed &$binaryData, mixed &$offsetIndex[, mixed $minimumLength = 0 ]) : mixed
Parameters
$binaryData : mixed
$offsetIndex : mixed
$minimumLength : mixed = 0

parseIdentifier()

protected static parseIdentifier(mixed $identifierOctet, mixed $expectedIdentifier, mixed $offsetForExceptionHandling) : mixed
Parameters
$identifierOctet : mixed
$expectedIdentifier : mixed
$offsetForExceptionHandling : mixed

setContentLength()

protected setContentLength(mixed $newContentLength) : mixed
Parameters
$newContentLength : mixed

createLengthPart()

private createLengthPart() : mixed 

        

        
    




    

    

                                

                

                                
    

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