java.security.cert

Class X509CRL

java.lang.Object
- java.security.cert.CRL
- - java.security.cert.X509CRL

Implemented Interfaces:: X509Extension

public abstract class X509CRL

extends CRL

implements X509Extension

The X509CRL class is the abstract class used to manage X.509 Certificate Revocation Lists. The CRL is a list of time stamped entries which indicate which lists have been revoked. The list is signed by a Certificate Authority (CA) and made publically available in a repository. Each revoked certificate in the CRL is identified by its certificate serial number. When a piece of code uses a certificate, the certificates validity is checked by validating its signature and determing that it is not only a recently acquired CRL. The recently aquired CRL is depends on the local policy in affect. The CA issues a new CRL periodically and entries are removed as the certificate expiration date is reached A description of the X.509 v2 CRL follows below from rfc2459. "The X.509 v2 CRL syntax is as follows. For signature calculation, the data that is to be signed is ASN.1 DER encoded. ASN.1 DER encoding is a tag, length, value encoding system for each element. CertificateList ::= SEQUENCE { tbsCertList TBSCertList, signatureAlgorithm AlgorithmIdentifier, signatureValue BIT STRING } TBSCertList ::= SEQUENCE { version Version OPTIONAL, -- if present, shall be v2 signature AlgorithmIdentifier, issuer Name, thisUpdate Time, nextUpdate Time OPTIONAL, revokedCertificates SEQUENCE OF SEQUENCE { userCertificate CertificateSerialNumber, revocationDate Time, crlEntryExtensions Extensions OPTIONAL -- if present, shall be v2 } OPTIONAL, crlExtensions [0] EXPLICIT Extensions OPTIONAL -- if present, shall be v2 }"

Since:: 1.2

Constructor Summary
`X509CRL()` Constructs a new X509CRL.

Method Summary
`boolean`	`equals(Object other)` Compares this X509CRL to other.
`abstract Set`	`extends X509CRLEntry> getRevokedCertificates()` Returns a Set of revoked certificates.
`abstract byte[]`	`getEncoded()` Gets the DER ASN.1 encoded format for this X.509 CRL.
`abstract Principal`	`getIssuerDN()` Returns the issuer (issuer distinguished name) of the CRL.
`X500Principal`	`getIssuerX500Principal()` Returns the X.500 distinguished name of this CRL's issuer.
`abstract Date`	`getNextUpdate()`
`abstract X509CRLEntry`	`getRevokedCertificate(BigInteger serialNumber)` Gets the requeste dX509Entry for the specified certificate serial number.
`abstract String`	`getSigAlgName()` Returns the signature algorithm used to sign the CRL.
`abstract String`	`getSigAlgOID()` Returns the OID for the signature algorithm used.
`abstract byte[]`	`getSigAlgParams()` Returns the AlgorithmParameters in the encoded form for the signature algorithm used.
`abstract byte[]`	`getSignature()` Returns the signature for the CRL.
`abstract byte[]`	`getTBSCertList()` Returns the DER ASN.1 encoded tbsCertList which is the basic information of the list and associated certificates in the encoded state.
`abstract Date`	`getThisUpdate()` Returns the thisUpdate date of the CRL.
`abstract int`	`getVersion()` Gets the version of this CRL.
`int`	`hashCode()` Returns a hash code for this X509CRL in its encoded form.
`abstract void`	`verify(PublicKey key)` Verifies that this CRL was properly signed with the PublicKey that corresponds to its private key.
`abstract void`	`verify(PublicKey key, String sigProvider)` Verifies that this CRL was properly signed with the PublicKey that corresponds to its private key and uses the signature engine provided by the provider.

Methods inherited from class java.security.cert.CRL
`getType`, `isRevoked`, `toString`

Methods inherited from class java.lang.Object
`clone`, `equals`, `extends Object> getClass`, `finalize`, `hashCode`, `notify`, `notifyAll`, `toString`, `wait`, `wait`, `wait`

X509CRL

protected X509CRL()

Constructs a new X509CRL.

equals

public boolean equals(Object other)

Compares this X509CRL to other. It checks if the object if instanceOf X509CRL and then checks if the encoded form matches.
Overrides:
equals in interface Object
Parameters:
other - An Object to test for equality
Returns:
true if equal, false otherwise

extends X509CRLEntry> getRevokedCertificates

public abstract Setextends X509CRLEntry> getRevokedCertificates()

Returns a Set of revoked certificates.
Returns:
a set of revoked certificates.

getEncoded

public abstract byte[] getEncoded()
            throws CRLException

Gets the DER ASN.1 encoded format for this X.509 CRL.
Returns:
byte array containg encoded form
Throws:
CRLException - if an error occurs

getIssuerDN

public abstract Principal getIssuerDN()

Returns the issuer (issuer distinguished name) of the CRL. The issuer is the entity who signed and issued the Certificate Revocation List. The ASN.1 DER encoding is: issuer Name, Name ::= CHOICE { RDNSequence } RDNSequence ::= SEQUENCE OF RelativeDistinguishedName RelativeDistinguishedName ::= SET 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)) } Consult rfc2459 for more information.
Returns:
the issuer in the Principal class

getIssuerX500Principal

public X500Principal getIssuerX500Principal()

Returns the X.500 distinguished name of this CRL's issuer.
Returns:
The issuer's X.500 distinguished name.
Since:
JDK 1.4

getNextUpdate

public abstract Date getNextUpdate()

getRevokedCertificate

public abstract X509CRLEntry getRevokedCertificate(BigInteger serialNumber)

Gets the requeste dX509Entry for the specified certificate serial number.
Returns:
a X509CRLEntry representing the X.509 CRL entry

getSigAlgName

public abstract String getSigAlgName()

Returns the signature algorithm used to sign the CRL. An examples is "SHA-1/DSA". The ASN.1 DER encoding is: signatureAlgorithm AlgorithmIdentifier, AlgorithmIdentifier ::= SEQUENCE { algorithm OBJECT IDENTIFIER, parameters ANY DEFINED BY algorithm OPTIONAL } Consult rfc2459 for more information. The algorithm name is determined from the OID.
Returns:
a string with the signature algorithm name

getSigAlgOID

public abstract String getSigAlgOID()

Returns the OID for the signature algorithm used. Example "1.2.840.10040.4.3" is return for SHA-1 with DSA.\ The ASN.1 DER encoding for the example is: id-dsa-with-sha1 ID ::= { iso(1) member-body(2) us(840) x9-57 (10040) x9cm(4) 3 } Consult rfc2459 for more information.
Returns:
a string containing the OID.

getSigAlgParams

public abstract byte[] getSigAlgParams()

Returns the AlgorithmParameters in the encoded form for the signature algorithm used. If access to the parameters is need, create an instance of AlgorithmParameters.
Returns:
byte array containing algorithm parameters, null if no parameters are present in CRL

getSignature

public abstract byte[] getSignature()

Returns the signature for the CRL. The ASN.1 DER encoding is: signatureValue BIT STRING Consult rfc2459 for more information.

getTBSCertList

public abstract byte[] getTBSCertList()
            throws CRLException

Returns the DER ASN.1 encoded tbsCertList which is the basic information of the list and associated certificates in the encoded state. See top for more information. The ASN.1 DER encoding is: tbsCertList TBSCertList, Consult rfc2459 for more information.
Returns:
byte array representing tbsCertList

getThisUpdate

public abstract Date getThisUpdate()

Returns the thisUpdate date of the CRL. The ASN.1 DER encoding is: thisUpdate Time, Time ::= CHOICE { utcTime UTCTime, generalTime GeneralizedTime } Consult rfc2459 for more information.
Returns:
the thisUpdate date

getVersion

public abstract int getVersion()

Gets the version of this CRL. The ASN.1 encoding is: version Version OPTIONAL, -- if present, shall be v2 Version ::= INTEGER { v1(0), v2(1), v3(2) } Consult rfc2459 for more information.
Returns:
the version number, Ex: 1 or 2

hashCode

public int hashCode()

Returns a hash code for this X509CRL in its encoded form.
Overrides:
hashCode in interface Object
Returns:
A hash code of this class

verify

public abstract void verify(PublicKey key)
            throws CRLException,
                   NoSuchAlgorithmException,
                   InvalidKeyException,
                   NoSuchProviderException,
                   SignatureException

Verifies that this CRL was properly signed with the PublicKey that corresponds to its private key.
Parameters:
key - PublicKey to verify with
Throws:
CRLException - encoding error
NoSuchAlgorithmException - unsupported algorithm
InvalidKeyException - incorrect key
NoSuchProviderException - no provider
SignatureException - signature error

verify

public abstract void verify(PublicKey key,
                            String sigProvider)
            throws CRLException,
                   NoSuchAlgorithmException,
                   InvalidKeyException,
                   NoSuchProviderException,
                   SignatureException

Verifies that this CRL was properly signed with the PublicKey that corresponds to its private key and uses the signature engine provided by the provider.
Parameters:
key - PublicKey to verify with
sigProvider - Provider to use for signature algorithm
Throws:
CRLException - encoding error
NoSuchAlgorithmException - unsupported algorithm
InvalidKeyException - incorrect key
NoSuchProviderException - incorrect provider
SignatureException - signature error

X509CRL.java --- X.509 Certificate Revocation List Copyright (C) 1999, 2004 Free Software Foundation, Inc. This file is part of GNU Classpath. GNU Classpath is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GNU Classpath is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GNU Classpath; see the file COPYING. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. Linking this library statically or dynamically with other modules is making a combined work based on this library. Thus, the terms and conditions of the GNU General Public License cover the whole combination. As a special exception, the copyright holders of this library give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you may extend this exception to your version of the library, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version.

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java.security.cert

Class X509CRL

Constructor Summary

Method Summary

Methods inherited from class java.security.cert.CRL

Methods inherited from class java.lang.Object

Constructor Details

X509CRL

Method Details

equals

extends X509CRLEntry> getRevokedCertificates

getEncoded

getIssuerDN

getIssuerX500Principal

getNextUpdate

getRevokedCertificate

getSigAlgName

getSigAlgOID

getSigAlgParams

getSignature

getTBSCertList

getThisUpdate

getVersion

hashCode

verify

verify