codec.x509.extensions
Class BasicConstraintsExtension

java.lang.Object
  |
  +--java.util.AbstractCollection
        |
        +--java.util.AbstractList
              |
              +--java.util.ArrayList
                    |
                    +--codec.asn1.ASN1AbstractCollection
                          |
                          +--codec.asn1.ASN1Sequence
                                |
                                +--codec.x509.X509Extension
                                      |
                                      +--codec.x509.extensions.BasicConstraintsExtension

All Implemented Interfaces:

ASN1Collection, ASN1Type, Cloneable, Collection, Externalizable, List, Serializable, X509Extension

public class BasicConstraintsExtension

extends X509Extension

This extension shall be critical.

  id-ce-extBasicConstraints OBJECT IDENTIFIER ::= {id-ce 19}
  BasicConstraintsSyntax ::= SEQUENCE {
    cA  BOOLEAN DEFAULT FALSE,
    pathLenConstraint INTEGER (0..MAX) OPTIONAL
  }
 
 	id-ce OBJECT IDENTIFIER  ::=  {joint-iso-ccitt(2) ds(5) 29}
 
 

Author:

mal little change : to be compatible to the ITU X690 Standard, Chapter 8,10, 11 i changed the constructor BasicConstraint(boolean ca, int pathLength). in case ca=false, the default value false is not encoded, this means the extension contents only its oid and an empty sequence. cval

See Also:

Serialized Form

Field Summary

protected ASN1Sequence	basicConstraintsSyntax
protected ASN1Boolean	cA
static String	ID_CE_BASIC_CONSTRAINTS
protected ASN1Integer	pathLenConstraints

Fields inherited from class codec.x509.X509Extension

critical, extnID, extnValue

Fields inherited from class java.util.AbstractList

modCount

Constructor Summary

BasicConstraintsExtension()

BasicConstraintsExtension(boolean _cA, int _pathLenConstraints)

BasicConstraintsExtension(byte[] ext)
Constructor for BasicConstraintsExtension.

Method Summary

void	decode(Decoder dec) Reads this collection from the given Decoder.
int	getPathLenConstraints() Returns the pathLenConstraints.
boolean	isCA() Returns the cA.
void	setCA(boolean _cA) Sets the cA.
void	setPathLenConstraints(int pathLenConstraints) Sets the pathLenConstraints.
String	toString(String offset) Returns a human-readable String representation of this extension with an offset String.

Methods inherited from class codec.x509.X509Extension

decodeExtensionValue, getCriticalExtensionOIDs, getEncoded, getExtensionValue, getNonCriticalExtensionOIDs, getOID, getValue, hasUnsupportedCriticalExtension, isCritical, setCritical, setOID, setValue, toString

Methods inherited from class codec.asn1.ASN1Sequence

getTag

Methods inherited from class codec.asn1.ASN1AbstractCollection

checkConstraints, encode, getCollection, getConstraint, getTagClass, isExplicit, isOptional, isType, readExternal, setConstraint, setExplicit, setOptional, writeExternal

Methods inherited from class java.util.ArrayList

add, add, addAll, addAll, clear, clone, contains, ensureCapacity, get, indexOf, isEmpty, lastIndexOf, remove, removeRange, set, size, toArray, toArray, trimToSize

Methods inherited from class java.util.AbstractList

equals, hashCode, iterator, listIterator, listIterator, subList

Methods inherited from class java.util.AbstractCollection

containsAll, remove, removeAll, retainAll

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.io.Externalizable

readExternal, writeExternal

Methods inherited from interface java.util.Collection

add, addAll, clear, contains, containsAll, equals, hashCode, isEmpty, iterator, remove, removeAll, retainAll, size, toArray, toArray

Methods inherited from interface java.util.List

containsAll, equals, hashCode, iterator, listIterator, listIterator, remove, removeAll, retainAll, subList

Field Detail

ID_CE_BASIC_CONSTRAINTS

public static final String ID_CE_BASIC_CONSTRAINTS

cA

protected ASN1Boolean cA

pathLenConstraints

protected ASN1Integer pathLenConstraints

basicConstraintsSyntax

protected ASN1Sequence basicConstraintsSyntax

Constructor Detail

BasicConstraintsExtension

public BasicConstraintsExtension()
                          throws Exception

BasicConstraintsExtension

public BasicConstraintsExtension(boolean _cA,
                                 int _pathLenConstraints)
                          throws Exception

Parameters:

_cA -

_pathLenConstraints - <0 means infit (i.e. this field won't be set

Throws:

Exception -

BasicConstraintsExtension

public BasicConstraintsExtension(byte[] ext)
                          throws ASN1Exception,
                                 IOException

Constructor for BasicConstraintsExtension.

Parameters:

ext -

Throws:

ASN1Exception -

IOException -

Method Detail

isCA

public boolean isCA()

Returns the cA.

Returns:

ASN1Boolean

getPathLenConstraints

public int getPathLenConstraints()

Returns the pathLenConstraints.

Returns:

The path length or -1 if none is present in this extension.

setCA

public void setCA(boolean _cA)
           throws CertificateEncodingException

Sets the cA.

Parameters:

_cA - The cA to set

setPathLenConstraints

public void setPathLenConstraints(int pathLenConstraints)
                           throws Exception

Sets the pathLenConstraints.

Parameters:

pathLenConstraints - The pathLenConstraints to set

decode

public void decode(Decoder dec)
            throws ASN1Exception,
                   IOException

Description copied from class: ASN1AbstractCollection

Reads this collection from the given Decoder. This type is initialized with the decoded data. The components of the decoded collection must match the components of this collection. If they do then the components are also initialized with the decoded values. Otherwise an exception is thrown.

Overrides:

decode in class ASN1AbstractCollection

Following copied from class: codec.asn1.ASN1AbstractCollection

Parameters:

dec - The decoder to read from.

toString

public String toString(String offset)

Description copied from class: X509Extension

Returns a human-readable String representation of this extension with an offset String.

Overrides:

toString in class X509Extension

Following copied from class: codec.x509.X509Extension

Parameters:

offset - String that will be put before each line of output