sun.security.x509

Class SubjectAlternativeNameExtension

java.lang.Object

sun.security.x509.Extension

sun.security.x509.SubjectAlternativeNameExtension

All Implemented Interfaces:

CertAttrSet<java.lang.String>

public class SubjectAlternativeNameExtension
extends Extension
implements CertAttrSet<java.lang.String>

This represents the Subject Alternative Name Extension. This extension, if present, allows the subject to specify multiple alternative names.

Extensions are represented as a sequence of the extension identifier (Object Identifier), a boolean flag stating whether the extension is to be treated as being critical and the extension value itself (this is again a DER encoding of the extension value).

The ASN.1 syntax for this is:

 SubjectAltName ::= GeneralNames
 GeneralNames ::= SEQUENCE SIZE (1..MAX) OF GeneralName
 

Author:

Amit Kapoor, Hemma Prafullchandra

See Also:

Extension, CertAttrSet

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	IDENT Identifier for this attribute, to be used with the get, set, delete methods of Certificate, x509 type.
static java.lang.String	NAME Attribute names.
static java.lang.String	SUBJECT_NAME

Fields inherited from class sun.security.x509.Extension

critical, extensionId, extensionValue

Constructor Summary

Constructors

Constructor and Description
SubjectAlternativeNameExtension() Create a default SubjectAlternativeNameExtension.
SubjectAlternativeNameExtension(java.lang.Boolean critical, GeneralNames names) Create a SubjectAlternativeNameExtension with the specified criticality and GeneralNames.
SubjectAlternativeNameExtension(java.lang.Boolean critical, java.lang.Object value) Create the extension from the passed DER encoded value.
SubjectAlternativeNameExtension(GeneralNames names) Create a SubjectAlternativeNameExtension with the passed GeneralNames.

Method Summary

Methods

Modifier and Type	Method and Description
void	delete(java.lang.String name) Delete the attribute value.
void	encode(java.io.OutputStream out) Write the extension to the OutputStream.
java.lang.Object	get(java.lang.String name) Get the attribute value.
java.util.Enumeration<java.lang.String>	getElements() Return an enumeration of names of attributes existing within this attribute.
java.lang.String	getName() Return the name of this attribute.
void	set(java.lang.String name, java.lang.Object obj) Set the attribute value.
java.lang.String	toString() Returns a printable representation of the SubjectAlternativeName.

Methods inherited from class sun.security.x509.Extension

encode, equals, getExtensionId, getExtensionValue, hashCode, isCritical

Methods inherited from class java.lang.Object

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

Field Detail

IDENT

public static final java.lang.String IDENT

Identifier for this attribute, to be used with the get, set, delete methods of Certificate, x509 type.

See Also:

Constant Field Values

NAME

public static final java.lang.String NAME

Attribute names.

See Also:

Constant Field Values

SUBJECT_NAME

public static final java.lang.String SUBJECT_NAME

See Also:

Constant Field Values

Constructor Detail

SubjectAlternativeNameExtension

public SubjectAlternativeNameExtension(GeneralNames names)
                                throws java.io.IOException

Create a SubjectAlternativeNameExtension with the passed GeneralNames. The extension is marked non-critical.

Parameters:

names - the GeneralNames for the subject.

Throws:

java.io.IOException - on error.

SubjectAlternativeNameExtension

public SubjectAlternativeNameExtension(java.lang.Boolean critical,
                               GeneralNames names)
                                throws java.io.IOException

Create a SubjectAlternativeNameExtension with the specified criticality and GeneralNames.

Parameters:

critical - true if the extension is to be treated as critical.

names - the GeneralNames for the subject.

Throws:

java.io.IOException - on error.

SubjectAlternativeNameExtension

public SubjectAlternativeNameExtension()

Create a default SubjectAlternativeNameExtension. The extension is marked non-critical.

SubjectAlternativeNameExtension

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

Create the extension from the passed DER encoded value.

Parameters:

critical - true if the extension is to be treated as critical.

value - an array of DER encoded bytes of the actual value.

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()

Returns a printable representation of the SubjectAlternativeName.

Specified by:

toString in interface CertAttrSet<java.lang.String>

Overrides:

toString in class Extension

Returns:

value of this certificate attribute in printable form.

encode

public void encode(java.io.OutputStream out)
            throws java.io.IOException

Write the extension to the OutputStream.

Specified by:

encode in interface CertAttrSet<java.lang.String>

Parameters:

out - the OutputStream to write the extension to.

Throws:

java.io.IOException - on encoding errors.

set

public void set(java.lang.String name,
       java.lang.Object obj)
         throws java.io.IOException

Set the attribute value.

Specified by:

set in interface CertAttrSet<java.lang.String>

Parameters:

name - the name of the attribute (e.g. "x509.info.key")

obj - the attribute object.

Throws:

java.io.IOException - on other errors.

get

public java.lang.Object get(java.lang.String name)
                     throws java.io.IOException

Get the attribute value.

Specified by:

get in interface CertAttrSet<java.lang.String>

Parameters:

name - the name of the attribute to return.

Throws:

java.io.IOException - on other errors.

delete

public void delete(java.lang.String name)
            throws java.io.IOException

Delete the attribute value.

Specified by:

delete in interface CertAttrSet<java.lang.String>

Parameters:

name - the name of the attribute to delete.

Throws:

java.io.IOException - on other errors.

getElements

public java.util.Enumeration<java.lang.String> getElements()

Return an enumeration of names of attributes existing within this attribute.

Specified by:

getElements in interface CertAttrSet<java.lang.String>

Returns:

an enumeration of the attribute names.

getName

public java.lang.String getName()

Return the name of this attribute.

Specified by:

getName in interface CertAttrSet<java.lang.String>

Returns:

the name of this CertAttrSet.