com.tencent.kona.sun.security.x509

Class BasicConstraintsExtension

java.lang.Object

com.tencent.kona.sun.security.x509.Extension

com.tencent.kona.sun.security.x509.BasicConstraintsExtension

All Implemented Interfaces:

com.tencent.kona.sun.security.util.DerEncoder, java.security.cert.Extension

public class BasicConstraintsExtension
extends Extension

This class represents the Basic Constraints Extension.

The basic constraints extension identifies whether the subject of the certificate is a CA and how deep a certification path may exist through that CA.

 The ASN.1 syntax for this extension is:
 BasicConstraints ::= SEQUENCE {
     cA                BOOLEAN DEFAULT FALSE,
     pathLenConstraint INTEGER (0..MAX) OPTIONAL
 }
 

See Also:

Extension

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	NAME

Fields inherited from class com.tencent.kona.sun.security.x509.Extension

critical, extensionId, extensionValue

Constructor Summary

Constructors

Constructor and Description
BasicConstraintsExtension(java.lang.Boolean critical, boolean ca, int len) Constructor for this object with specified criticality.
BasicConstraintsExtension(boolean ca, int len) Default constructor for this object.
BasicConstraintsExtension(java.lang.Boolean critical, java.lang.Object value) Create the extension from the passed DER encoded value of the same.

Method Summary

Modifier and Type	Method and Description
void	encode(com.tencent.kona.sun.security.util.DerOutputStream out) Encode this extension value to the output stream.
java.lang.String	getName() Return the name of this extension.
int	getPathLen()
boolean	isCa()
java.lang.String	toString() Return user readable form of extension.

Methods inherited from class com.tencent.kona.sun.security.x509.Extension

encode, equals, getExtensionId, getExtensionValue, getId, getValue, hashCode, isCritical, newExtension

Methods inherited from class java.lang.Object

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

Field Detail

NAME

public static final java.lang.String NAME

See Also:

Constant Field Values

Constructor Detail

BasicConstraintsExtension

public BasicConstraintsExtension(boolean ca,
                                 int len)

Default constructor for this object. The extension is marked critical if the ca flag is true, false otherwise.

Parameters:

ca - true, if the subject of the Certificate is a CA.

len - specifies the depth of the certification path.

BasicConstraintsExtension

public BasicConstraintsExtension(java.lang.Boolean critical,
                                 boolean ca,
                                 int len)

Constructor for this object with specified criticality.

Parameters:

critical - true, if the extension should be marked critical

ca - true, if the subject of the Certificate is a CA.

len - specifies the depth of the certification path.

BasicConstraintsExtension

public BasicConstraintsExtension(java.lang.Boolean critical,
                                 java.lang.Object value)
                          throws java.io.IOException

Create the extension from the passed DER encoded value of the same.

Parameters:

critical - flag indicating if extension is critical or not

value - an array containing the DER encoded bytes of the extension.

Throws:

java.lang.ClassCastException - if value is not an array of bytes

java.io.IOException - on error.

Method Detail

toString

public java.lang.String toString()

Return user readable form of extension.

Overrides:

toString in class Extension

encode

public void encode(com.tencent.kona.sun.security.util.DerOutputStream out)

Encode this extension value to the output stream.

Specified by:

encode in interface com.tencent.kona.sun.security.util.DerEncoder

Overrides:

encode in class Extension

Parameters:

out - the DerOutputStream to encode the extension to.

isCa

public boolean isCa()

getPathLen

public int getPathLen()

getName

public java.lang.String getName()

Return the name of this extension.

Overrides:

getName in class Extension