anon.crypto
Class X509BasicConstraints

java.lang.Object
  anon.crypto.AbstractX509Extension
      anon.crypto.X509BasicConstraints

public class X509BasicConstraints
extends AbstractX509Extension

This class implements the BasicConstrains extension for X.509-certificates as specified in RFC 5280.

Author:

Robert Hirschberger

See Also:

http://tools.ietf.org/html/rfc5280

Field Summary

static java.lang.String	IDENTIFIER
private boolean	m_cA true if the certificate belongs to a CA
private int	m_pathLenConstraint the maximal length of a certification path build from this cert to an end entity

Constructor Summary

X509BasicConstraints(boolean cA)
Creates a new X509BasicConstrains objects with the specified value for cA.

X509BasicConstraints(org.bouncycastle.asn1.DERSequence a_extension)
Creates an new X509BasicConstraints object from a BouncyCastle DERSequence

X509BasicConstraints(int pathLenConstraint)
Creates a new X509BasicConstrains objects with pathLength limited to the specified value.

Method Summary

private static byte[]	createDEROctets(boolean cA) Generates the DEROctets of this extension to hand over to the super class.
private static byte[]	createDEROctets(int pathLenConstraint) Generates the DEROctets of this extension to hand over to the super class.
private void	createValue() Instantiates a new BouncyCastle BasicConstraints from the DEROctets of this extension an extracts the cA and pathLenConstraint values.
java.lang.String	getName() Returns the human-readable name of this extension.
int	getPathLengthConstraint()
java.util.Vector	getValues() This method returns all values of this extension in separated String objects.
boolean	isCA()

Methods inherited from class anon.crypto.AbstractX509Extension

equals, getBCExtension, getDEROctets, getIdentifier, getInstance, hashCode, isCritical, toString

Methods inherited from class java.lang.Object

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

Field Detail

IDENTIFIER

public static final java.lang.String IDENTIFIER

m_cA

private boolean m_cA

true if the certificate belongs to a CA

m_pathLenConstraint

private int m_pathLenConstraint

the maximal length of a certification path build from this cert to an end entity

Constructor Detail

X509BasicConstraints

public X509BasicConstraints(boolean cA)

Creates a new X509BasicConstrains objects with the specified value for cA. This indicates if the certificate is a CA-certificate. This Extension is by default set to non-critical according to RFC 5280.

Parameters:

cA - indicates if the certificate belongs to a CA.

X509BasicConstraints

public X509BasicConstraints(int pathLenConstraint)

Creates a new X509BasicConstrains objects with pathLength limited to the specified value. Note that cA is always set to true if a pathLength is specified. This Extension is by default set to non-critical according to RFC 5280.

Parameters:

pathLenConstraint - the maximum length of a certification Path

X509BasicConstraints

public X509BasicConstraints(org.bouncycastle.asn1.DERSequence a_extension)

Creates an new X509BasicConstraints object from a BouncyCastle DERSequence

Parameters:

a_extension - the extions as DERSequence

Method Detail

createDEROctets

private static byte[] createDEROctets(int pathLenConstraint)

Generates the DEROctets of this extension to hand over to the super class.

Parameters:

pathLenConstraint - the maximum length of a certification Path

Returns:

the DEROctets of this extension

createDEROctets

private static byte[] createDEROctets(boolean cA)

Generates the DEROctets of this extension to hand over to the super class.

Parameters:

cA - indicates if the certificate belongs to a CA.

Returns:

the DEROctets of this extension

createValue

private void createValue()

Instantiates a new BouncyCastle BasicConstraints from the DEROctets of this extension an extracts the cA and pathLenConstraint values.

isCA

public boolean isCA()

Returns:

if the certificate belongs to a CA

getPathLengthConstraint

public int getPathLengthConstraint()

Returns:

the maximal length of a certificate that is build from this certificate to an end entity

getName

public java.lang.String getName()

Description copied from class: AbstractX509Extension

Returns the human-readable name of this extension.

Specified by:

getName in class AbstractX509Extension

Returns:

"BasicConstraints"

getValues

public java.util.Vector getValues()

Description copied from class: AbstractX509Extension

This method returns all values of this extension in separated String objects. The values should be human readable.

Specified by:

getValues in class AbstractX509Extension

Returns:

a Vector containing the values for cA and pathLenConstraint as human readable Strings.