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java.security.cert

Class X509CRL

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

All 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 The CRL is a list of time stamped entries which indicate which lists have been revoked.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:Author:

Constructor Summary

X509CRL()

Constructs a new X509CRL.

Method Summary

booleanequals(java.lang.Object other)

Compares this X509CRL to other.
byte[]getEncoded()

Gets the DER ASN.1 encoded format for this X.509 CRL.
java.security.PrincipalgetIssuerDN()

Returns the issuer (issuer distinguished name) of the CRL.
java.util.DategetNextUpdate()

java.security.cert.X509CRLEntrygetRevokedCertificate(java.math.BigInteger serialNumber)

Gets the requeste dX509Entry for the specified certificate serial number.
java.util.SetgetRevokedCertificates()

Returns a Set of revoked certificates.
java.lang.StringgetSigAlgName()

Returns the signature algorithm used to sign the CRL.
java.lang.StringgetSigAlgOID()

Returns the OID for the signature algorithm used.
byte[]getSigAlgParams()

Returns the AlgorithmParameters in the encoded form for the signature algorithm used.
byte[]getSignature()

Returns the signature for the CRL.
byte[]getTBSCertList()

Returns the DER ASN.1 encoded tbsCertList which is the basic information of the list and associated certificates in the encoded state.
java.util.DategetThisUpdate()

Returns the thisUpdate date of the CRL.
intgetVersion()

Gets the version of this CRL.
inthashCode()

Returns a hash code for this X509CRL in its encoded form.
voidverify(java.security.PublicKey key)

Verifies that this CRL was properly signed with the PublicKey that corresponds to its private key.
voidverify(java.security.PublicKey key, java.lang.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.

Constructor Details

X509CRL

protected X509CRL()

Constructs a new X509CRL.


Method Details

equals

public boolean equals(java.lang.Object other)

Compares this X509CRL to other. It checks if the object if instanceOf X509CRL and then checks if the encoded form matches.

Parameters:

Returns:


getEncoded

public byte[] getEncoded()

Gets the DER ASN.1 encoded format for this X.509 CRL.

Returns:

Throws:


getIssuerDN

public 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:


getNextUpdate

public Date getNextUpdate()


getRevokedCertificate

public X509CRLEntry getRevokedCertificate(java.math.BigInteger serialNumber)

Gets the requeste dX509Entry for the specified certificate serial number.

Parameters:

Returns:


getRevokedCertificates

public Set getRevokedCertificates()

Returns a Set of revoked certificates.

Returns:


getSigAlgName

public 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:


getSigAlgOID

public 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:


getSigAlgParams

public 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:


getSignature

public byte[] getSignature()

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


getTBSCertList

public byte[] getTBSCertList()

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:


getThisUpdate

public 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:


getVersion

public 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:


hashCode

public int hashCode()

Returns a hash code for this X509CRL in its encoded form.

Returns:


verify

public void verify(java.security.PublicKey key)

Verifies that this CRL was properly signed with the PublicKey that corresponds to its private key.

Parameters:

Throws:


verify

public void verify(java.security.PublicKey key, java.lang.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.

Parameters:

Throws: