java.security.cert
class X509CRLSelector

java.lang.Object java.security.cert.X509CRLSelector

All Implemented Interfaces:

CRLSelector

Most common way to construct:

X509CRLSelector selector = new X509CRLSelector();

Based on 26 examples

public class X509CRLSelector
extends Object
implements CRLSelector

A CRLSelector that selects X509CRLs that match all specified criteria. This class is particularly useful when selecting CRLs from a CertStore to check revocation status of a particular certificate.

When first constructed, an X509CRLSelector has no criteria enabled and each of the get methods return a default value (null). Therefore, the {@link #match match} method would return true for any X509CRL. Typically, several criteria are enabled (by calling {@link #setIssuers setIssuers} or {@link #setDateAndTime setDateAndTime}, for instance) and then the X509CRLSelector is passed to {@link CertStore#getCRLs CertStore.getCRLs} or some similar method.

Please refer to RFC 2459 for definitions of the X.509 CRL fields and extensions mentioned below.

Concurrent Access

Unless otherwise specified, the methods defined in this class are not thread-safe. Multiple threads that need to access a single object concurrently should synchronize amongst themselves and provide the necessary locking. Multiple threads each manipulating separate objects need not synchronize.

X509CRLSelector

public X509CRLSelector()

Creates an X509CRLSelector. Initially, no criteria are set so any X509CRL will match.

addIssuer

public void addIssuer(X500Principal issuer)

Adds a name to the issuerNames criterion. The issuer distinguished name in the X509CRL must match at least one of the specified distinguished names.

This method allows the caller to add a name to the set of issuer names which X509CRLs may contain. The specified name is added to any previous value for the issuerNames criterion. If the specified name is a duplicate, it may be ignored.

Parameters:

issuer - the issuer as X500Principal

addIssuerName

public void addIssuerName(byte[] name)
                   throws IOException

Adds a name to the issuerNames criterion. The issuer distinguished name in the X509CRL must match at least one of the specified distinguished names.

This method allows the caller to add a name to the set of issuer names which X509CRLs may contain. The specified name is added to any previous value for the issuerNames criterion. If the specified name is a duplicate, it may be ignored. If a name is specified as a byte array, it should contain a single DER encoded distinguished name, as defined in X.501. The ASN.1 notation for this structure is as follows.

The name is provided as a byte array. This byte array should contain a single DER encoded distinguished name, as defined in X.501. The ASN.1 notation for this structure appears in the documentation for {@link #setIssuerNames setIssuerNames(Collection names)}.

Note that the byte array supplied here is cloned to protect against subsequent modifications.

Parameters:

name - a byte array containing the name in ASN.1 DER encoded form

Throws:

IOException - if a parsing error occurs

addIssuerName

public void addIssuerName(String name)
                   throws IOException

Denigrated, use {@linkplain #addIssuer(X500Principal)} or {@linkplain #addIssuerName(byte[])} instead. This method should not be relied on as it can fail to match some CRLs because of a loss of encoding information in the RFC 2253 String form of some distinguished names.

Adds a name to the issuerNames criterion. The issuer distinguished name in the X509CRL must match at least one of the specified distinguished names.

This method allows the caller to add a name to the set of issuer names which X509CRLs may contain. The specified name is added to any previous value for the issuerNames criterion. If the specified name is a duplicate, it may be ignored.

Parameters:

name - the name in RFC 2253 form

Throws:

IOException - if a parsing error occurs

clone

public Object clone()

Returns a copy of this object.

Overrides:

clone in class Object

Returns:

the copy

getCertificateChecking

public X509Certificate getCertificateChecking()

Returns the certificate being checked. This is not a criterion. Rather, it is optional information that may help a CertStore find CRLs that would be relevant when checking revocation for the specified certificate. If the value returned is null, then no such optional information is provided.

Returns:

the certificate being checked (or null)

getDateAndTime

public Date getDateAndTime()

Returns the dateAndTime criterion. The specified date must be equal to or later than the value of the thisUpdate component of the X509CRL and earlier than the value of the nextUpdate component. There is no match if the X509CRL does not contain a nextUpdate component. If null, no dateAndTime check will be done.

Note that the Date returned is cloned to protect against subsequent modifications.

Returns:

the Date to match against (or null)

getIssuerNames

public Collection getIssuerNames()

Returns a copy of the issuerNames criterion. The issuer distinguished name in the X509CRL must match at least one of the specified distinguished names. If the value returned is null, any issuer distinguished name will do.

If the value returned is not null, it is a Collection of names. Each name is a String or a byte array representing a distinguished name (in RFC 2253 or ASN.1 DER encoded form, respectively). Note that the Collection returned may contain duplicate names.

If a name is specified as a byte array, it should contain a single DER encoded distinguished name, as defined in X.501. The ASN.1 notation for this structure is given in the documentation for {@link #setIssuerNames setIssuerNames(Collection names)}.

Note that a deep copy is performed on the Collection to protect against subsequent modifications.

Returns:

a Collection of names (or null)

getIssuers

public Collection getIssuers()

Returns the issuerNames criterion. The issuer distinguished name in the X509CRL must match at least one of the specified distinguished names. If the value returned is null, any issuer distinguished name will do.

If the value returned is not null, it is a unmodifiable Collection of X500Principals.

Returns:

an unmodifiable Collection of names (or null)

getMaxCRL

public BigInteger getMaxCRL()

Returns the maxCRLNumber criterion. The X509CRL must have a CRL number extension whose value is less than or equal to the specified value. If null, no maxCRLNumber check will be done.

Returns:

the maximum CRL number accepted (or null)

getMinCRL

public BigInteger getMinCRL()

Returns the minCRLNumber criterion. The X509CRL must have a CRL number extension whose value is greater than or equal to the specified value. If null, no minCRLNumber check will be done.

Returns:

the minimum CRL number accepted (or null)

match

public boolean match(CRL crl)

Decides whether a CRL should be selected.

Parameters:

crl - the CRL to be checked

Returns:

true if the CRL should be selected, false otherwise

setCertificateChecking

public void setCertificateChecking(X509Certificate cert)

Sets the certificate being checked. This is not a criterion. Rather, it is optional information that may help a CertStore find CRLs that would be relevant when checking revocation for the specified certificate. If null is specified, then no such optional information is provided.

Parameters:

cert - the X509Certificate being checked (or null)

setDateAndTime

public void setDateAndTime(Date dateAndTime)

Sets the dateAndTime criterion. The specified date must be equal to or later than the value of the thisUpdate component of the X509CRL and earlier than the value of the nextUpdate component. There is no match if the X509CRL does not contain a nextUpdate component. If null, no dateAndTime check will be done.

Note that the Date supplied here is cloned to protect against subsequent modifications.

Parameters:

dateAndTime - the Date to match against (or null)

setIssuerNames

public void setIssuerNames(Collection names)
                    throws IOException

Note: use {@linkplain #setIssuers(Collection)} instead or only specify the byte array form of distinguished names when using this method. See {@link #addIssuerName(String)} for more information.

Sets the issuerNames criterion. The issuer distinguished name in the X509CRL must match at least one of the specified distinguished names. If null, any issuer distinguished name will do.

This method allows the caller to specify, with a single method call, the complete set of issuer names which X509CRLs may contain. The specified value replaces the previous value for the issuerNames criterion.

The names parameter (if not null) is a Collection of names. Each name is a String or a byte array representing a distinguished name (in RFC 2253 or ASN.1 DER encoded form, respectively). If null is supplied as the value for this argument, no issuerNames check will be performed.

Note that the names parameter can contain duplicate distinguished names, but they may be removed from the Collection of names returned by the {@link #getIssuerNames getIssuerNames} method.

If a name is specified as a byte array, it should contain a single DER encoded distinguished name, as defined in X.501. The ASN.1 notation for this structure is as follows.

 Name ::= CHOICE {
   RDNSequence }

 RDNSequence ::= SEQUENCE OF RelativeDistinguishedName

 RelativeDistinguishedName ::=
   SET SIZE (1 .. MAX) OF AttributeTypeAndValue

 AttributeTypeAndValue ::= SEQUENCE {
   type     AttributeType,
   value    AttributeValue }

 AttributeType ::= OBJECT IDENTIFIER

 AttributeValue ::= ANY DEFINED BY AttributeType
 ....
 DirectoryString ::= CHOICE {
       teletexString           TeletexString (SIZE (1..MAX)),
       printableString         PrintableString (SIZE (1..MAX)),
       universalString         UniversalString (SIZE (1..MAX)),
       utf8String              UTF8String (SIZE (1.. MAX)),
       bmpString               BMPString (SIZE (1..MAX)) }
 

Note that a deep copy is performed on the Collection to protect against subsequent modifications.

Parameters:

names - a Collection of names (or null)

Throws:

IOException - if a parsing error occurs

setIssuers

public void setIssuers(Collection issuers)

Sets the issuerNames criterion. The issuer distinguished name in the X509CRL must match at least one of the specified distinguished names. If null, any issuer distinguished name will do.

This method allows the caller to specify, with a single method call, the complete set of issuer names which X509CRLs may contain. The specified value replaces the previous value for the issuerNames criterion.

The names parameter (if not null) is a Collection of X500Principals.

Note that the names parameter can contain duplicate distinguished names, but they may be removed from the Collection of names returned by the {@link #getIssuers getIssuers} method.

Note that a copy is performed on the Collection to protect against subsequent modifications.

Parameters:

issuers - a Collection of X500Principals (or null)

setMaxCRLNumber

public void setMaxCRLNumber(BigInteger maxCRL)

Sets the maxCRLNumber criterion. The X509CRL must have a CRL number extension whose value is less than or equal to the specified value. If null, no maxCRLNumber check will be done.

Parameters:

maxCRL - the maximum CRL number accepted (or null)

setMinCRLNumber

public void setMinCRLNumber(BigInteger minCRL)

Sets the minCRLNumber criterion. The X509CRL must have a CRL number extension whose value is greater than or equal to the specified value. If null, no minCRLNumber check will be done.

Parameters:

minCRL - the minimum CRL number accepted (or null)

toString

public String toString()

Returns a printable representation of the X509CRLSelector.

Overrides:

toString in class Object

Returns:

a String describing the contents of the X509CRLSelector.