sun.security.x509

Class AuthorityKeyIdentifierExtension

java.lang.Object

sun.security.x509.Extension

sun.security.x509.AuthorityKeyIdentifierExtension

All Implemented Interfaces:

CertAttrSet<java.lang.String>

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

This class represents the Authority Key Identifier Extension.

The authority key identifier extension provides a means of identifying the particular public key used to sign a certificate. This extension would be used where an issuer has multiple signing keys (either due to multiple concurrent key pairs or due to changeover).

The ASN.1 syntax for this is:

 AuthorityKeyIdentifier ::= SEQUENCE {
    keyIdentifier             [0] KeyIdentifier           OPTIONAL,
    authorityCertIssuer       [1] GeneralNames            OPTIONAL,
    authorityCertSerialNumber [2] CertificateSerialNumber OPTIONAL
 }
 KeyIdentifier ::= OCTET STRING
 

Author:

Amit Kapoor, Hemma Prafullchandra

See Also:

Extension, CertAttrSet

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	AUTH_NAME
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	KEY_ID
static java.lang.String	NAME Attribute names.
static java.lang.String	SERIAL_NUMBER

Fields inherited from class sun.security.x509.Extension

critical, extensionId, extensionValue

Constructor Summary

Constructors

Constructor and Description
AuthorityKeyIdentifierExtension(java.lang.Boolean critical, java.lang.Object value) Create the extension from the passed DER encoded value of the same.
AuthorityKeyIdentifierExtension(KeyIdentifier kid, GeneralNames name, SerialNumber sn) The default constructor for this extension.

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() Return the object as a string.

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

KEY_ID

public static final java.lang.String KEY_ID

See Also:

Constant Field Values

AUTH_NAME

public static final java.lang.String AUTH_NAME

See Also:

Constant Field Values

SERIAL_NUMBER

public static final java.lang.String SERIAL_NUMBER

See Also:

Constant Field Values

Constructor Detail

AuthorityKeyIdentifierExtension

public AuthorityKeyIdentifierExtension(KeyIdentifier kid,
                               GeneralNames name,
                               SerialNumber sn)
                                throws java.io.IOException

The default constructor for this extension. Null parameters make the element optional (not present).

Parameters:

id - the KeyIdentifier associated with this extension.

names - the GeneralNames associated with this extension

serialNum - the CertificateSerialNumber associated with this extension.

Throws:

java.io.IOException - on error.

AuthorityKeyIdentifierExtension

public AuthorityKeyIdentifierExtension(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 - 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()

Return the object as a string.

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 error.

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.