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## Package java.security.cert

Provides classes and interfaces for parsing and managing certificates, certificate revocation lists (CRLs), and certification paths.

See:
Description

Interface Summary
CertPathBuilderResult | A specification of the result of a certification path builder algorithm.
CertPathParameters | A specification of certification path algorithm parameters.
CertPathValidatorResult | A specification of the result of a certification path validator algorithm.
CertSelector | A selector that defines a set of criteria for selecting `Certificate`s.
CertStoreParameters | A specification of `CertStore` parameters.
CRLSelector | A selector that defines a set of criteria for selecting `CRL`s.
PolicyNode | An immutable valid policy tree node as defined by the PKIX certification path validation algorithm.
X509Extension | Interface for an X.509 extension.

Class Summary
Certificate | Abstract class for managing a variety of identity certificates.
Certificate.CertificateRep | Alternate Certificate class for serialization.
CertificateFactory | This class defines the functionality of a certificate factory, which is used to generate certificate, certification path (`CertPath`) and certificate revocation list (CRL) objects from their encodings.
CertificateFactorySpi | This class defines the Service Provider Interface (SPI) for the `CertificateFactory` class.
CertPath | An immutable sequence of certificates (a certification path).
CertPath.CertPathRep | Alternate `CertPath` class for serialization.
CertPathBuilder | A class for building certification paths (also known as certificate chains).
CertPathBuilderSpi | The Service Provider Interface (SPI) for the `CertPathBuilder` class.
CertPathValidator | A class for validating certification paths (also known as certificate chains).
CertPathValidatorSpi | The Service Provider Interface (SPI) for the `CertPathValidator` class.
CertStore | A class for retrieving `Certificate`s and `CRL`s from a repository.
CertStoreSpi | The Service Provider Interface (SPI) for the `CertStore` class.
CollectionCertStoreParameters | Parameters used as input for the Collection `CertStore` algorithm.
CRL | This class is an abstraction of certificate revocation lists (CRLs) that have different formats but important common uses.
LDAPCertStoreParameters | Parameters used as input for the LDAP `CertStore` algorithm.
PKIXBuilderParameters | Parameters used as input for the PKIX `CertPathBuilder` algorithm.
PKIXCertPathBuilderResult | This class represents the successful result of the PKIX certification path builder algorithm.
PKIXCertPathChecker | An abstract class that performs one or more checks on an `X509Certificate`.
PKIXCertPathValidatorResult | This class represents the successful result of the PKIX certification path validation algorithm.
PKIXParameters | Parameters used as input for the PKIX `CertPathValidator` algorithm.
PolicyQualifierInfo | An immutable policy qualifier represented by the ASN.1 PolicyQualifierInfo structure.
TrustAnchor | A trust anchor or most-trusted Certification Authority (CA).
X509Certificate | Abstract class for X.509 certificates.
X509CertSelector | A `CertSelector` that selects `X509Certificates` that match all specified criteria.
X509CRL | Abstract class for an X.509 Certificate Revocation List (CRL).
X509CRLEntry | Abstract class for a revoked certificate in a CRL (Certificate Revocation List).
X509CRLSelector | A `CRLSelector` that selects `X509CRLs` that match all specified criteria.

Exception Summary
CertificateEncodingException | Certificate Encoding Exception.
CertificateException | This exception indicates one of a variety of certificate problems.
CertificateExpiredException | Certificate Expired Exception.
CertificateNotYetValidException | Certificate is not yet valid exception.
CertificateParsingException | Certificate Parsing Exception.
CertPathBuilderException | An exception indicating one of a variety of problems encountered when building a certification path with a `CertPathBuilder`.
CertPathValidatorException | An exception indicating one of a variety of problems encountered when validating a certification path.
CertStoreException | An exception indicating one of a variety of problems retrieving certificates and CRLs from a `CertStore`.
CRLException | CRL (Certificate Revocation List) Exception.

## Package java.security.cert Description

Provides classes and interfaces for parsing and managing certificates, certificate revocation lists (CRLs), and certification paths. It contains support for X.509 v3 certificates and X.509 v2 CRLs.

## Package Specification

- Cryptography Architecture
- RFC 2459: X.509 Certificate and CRL Profile

## Related Documentation

For information about X.509 certificates and CRLs, please see:

- http://www.ietf.org/rfc/rfc2459.txt
- X.509 Certificates and CRLs

Since:
  1.2

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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

Copyright 2004 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.