iaik.x509.extensions.qualified

Class QCStatements

java.lang.Object

iaik.x509.V3Extension

iaik.x509.extensions.qualified.QCStatements

public class QCStatements
extends V3Extension

This class implements the QCStatements Extension.

The QCStatements qualified certificate extension is specified by the PKIX Qualified Certificate Profile (RFC 3739).

The QCStatements extension is associated with a specific certificateExtension object identifier, derived from:

     id-pkix  OBJECT IDENTIFIER  ::=
             { iso(1) identified-organization(3) dod(6) internet(1)
                     security(5) mechanisms(5) pkix(7) }
 
     id-pe  OBJECT IDENTIFIER  ::=  { id-pkix 1 }
 
     id-pe-qcStatements OBJECT IDENTIFIER ::= { id-pe 3 }
 

which corresponds to the OID string "1.3.6.1.5.5.7.1.3".

The Qualified Certificate profile specifies the QCStatements extension for including defined statements related to a qualified certificate.
ASN.1 definition:

 QCStatements ::= SEQUENCE OF QCStatement
 

Each QC statement itself consists of an object identifier and an optional statement info identified by the object identifier (statement ID):

 QCStatement ::= SEQUENCE {
   statementId OBJECT IDENTIFIER,
   statementInfo ANY DEFINED BY statementId OPTIONAL }
 

The QCStatement type is implemented by class QCStatement which includes a static part to be used for registering implementations for particular (private) statement infos. A statement info may be implemented by extending the abstract QCStatementInfo class and registering it by calling the static register method of class QCStatement, e.g.:

 public class MyQCStatementInfo extends QCStatementInfo {
 ...
 // the statement id:
   public static final ObjectID statementID = ...;
 ...
 }
 ...
 // register the implementation:
 QCStatement.register(MyQCStatementInfo.statementID, MyQCStatementInfo.class);
 

Note that the statementID used for registering a statementInfo implementing class belongs to the QCStatement for which the statementInfo is used. For instance, the Qualified Certificate Profile currently defines one statement info, SemanticsInformation, to may be used for the QCSyntaxV1 and QCSyntaxV2 QC statements.

For any desired QCStatementInfo to be included into a qualified certificate create a QCStatement object and subsequently add the QCStatement objects to a QCStatements certificate extension. The following example creates a QCSyntaxV2 QCStatement with a SemanticsInformation statement info and adds it to a QCStatements extension:

 ObjectID semanticsIdentifier = ...;
 GeneralName[] nameRegistrationAuthorities = ...;
 // create the QCSyntaxV2:
 QCSyntaxV2 semanticsInformation = 
   new QCSyntaxV2(semanticsIdentifier, nameRegistrationAuthorities);
 // create a QCStatement for the SemanticsInformation:
 QCStatement[] qcStatements = ...;
 qcStatements[0] = new QCStatement(semanticsInformation);
 // add any further QCStatements
 ...
 // Create a QCStatements extension from the QCStatements:
 QCStatements qcStatementsExt = new QCStatements(qcStatements);
 

If the QCStatement you are using does not have a statementInfo component, simply create a QCStatement object for the particular statementID. For instance, you may use a QCSyntaxV2 to specify conformance with version 2 of the PKIX qualified certificate profile:

 ...
 QCStatement[] qcStatements = ...;
 qcStatements[0] = new QCStatement(QCSyntaxV2.statementID);
 ...
 

For adding a QCStatements extension object to a QualifiedCertificate, use the addExtension or setQCStatements method of the QualifiedCertificate class:

 QualifiedCertificate cert = new QualifiedCertificate();
   ...
 cert.setQCStatements(qcStatementsExt);
 

Version:

File Revision 16

See Also:

QCStatementInfo, QCStatement

Field Summary

Fields

Modifier and Type	Field and Description
static ObjectID	oid The object identifier of this QCStatements extension.

Fields inherited from class iaik.x509.V3Extension

critical

Constructor Summary

Constructors

Constructor and Description
QCStatements() Default constructor.
QCStatements(QCStatement[] qcStatements) Creates an QCStatements object and adds the given QCStatement objects.

Method Summary

Methods

Modifier and Type	Method and Description
ObjectID	getObjectID() Returns the object ID of this QCStatements extension
QCStatement[]	getQCStatements() Returns the QCStatement objects included in this QCStatements extension.
QCStatement	getQCStatements(ObjectID statementID) Searches this QCStatements extension for an QCStatement with the given statementID.
int	hashCode() Returns a hashcode for this identity.
void	init(ASN1Object obj) Inits this QCStatements implementation with an ASN1object representing the value of this extension.
void	setQCStatements(QCStatement[] qcStatements) Sets the QCStatement objects of this QCStatements extension.
ASN1Object	toASN1Object() Returns an ASN1Object representing the value of this QCStatements extension object.
java.lang.String	toString() Returns a string that represents the contents of this QCStatements extension.

Methods inherited from class iaik.x509.V3Extension

getName, isCritical, setCritical

Methods inherited from class java.lang.Object

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

Field Detail

oid

public static final ObjectID oid

The object identifier of this QCStatements extension. The corresponding OID string is "1.3.6.1.5.5.5.7.1.3".

Constructor Detail

QCStatements

public QCStatements()

Default constructor. Creates an empty QCStatements object.

QCStatements

public QCStatements(QCStatement[] qcStatements)

Creates an QCStatements object and adds the given QCStatement objects.

Parameters:

qcStatements - the QCStatement objects to be included into this QCStatements extension

Method Detail

getObjectID

public ObjectID getObjectID()

Returns the object ID of this QCStatements extension

Specified by:

getObjectID in class V3Extension

Returns:

the object ID

setQCStatements

public void setQCStatements(QCStatement[] qcStatements)

Sets the QCStatement objects of this QCStatements extension.

Parameters:

qcStatements - the QCStatement objects to be included into this QCStatements extension

getQCStatements

public QCStatement[] getQCStatements()

Returns the QCStatement objects included in this QCStatements extension.

Returns:

the QCStatement objects included in this QCStatements, the array may be null if no statements are included

getQCStatements

public QCStatement getQCStatements(ObjectID statementID)

Searches this QCStatements extension for an QCStatement with the given statementID.

Parameters:

statementID - the statementID to search for

Returns:

the (first) QCStatement object with the given statementID, or null if no statement with the requested ID is included

init

public void init(ASN1Object obj)
          throws X509ExtensionException

Inits this QCStatements implementation with an ASN1object representing the value of this extension.

The given ASN1Object consists of a Sequence of QCStatement objects included in the QCStatements object.

The given ASN1Object is the one created by toASN1Object().

This method is used by the X509Extensions class when parsing the ASN.1 representation of a certificate for properly initializing an included QCStatements extension. This method initializes the extension only with its value, but not with its critical specification. For that reason, this method shall not be explicitly called by an application.

Specified by:

init in class V3Extension

Parameters:

obj - the QCStatements as ASN1Object

Throws:

X509ExtensionException - if the extension could not be parsed

toASN1Object

public ASN1Object toASN1Object()
                        throws X509ExtensionException

Returns an ASN1Object representing the value of this QCStatements extension object.

The ASN1Object is an ASN.1 Sequence including any QCStatement that has been added to this QCStatements object.

 QCStatements ::= SEQUENCE OF QCStatement
 

Specified by:

toASN1Object in class V3Extension

Returns:

the value of this QCStatements as ASN1Object

Throws:

X509ExtensionException - if the extension could not be created

hashCode

public int hashCode()

Returns a hashcode for this identity.

Specified by:

hashCode in class V3Extension

Returns:

a hash code for this identity

toString

public java.lang.String toString()

Returns a string that represents the contents of this QCStatements extension.

Overrides:

toString in class java.lang.Object

Returns:

the string representation