| Certificate | 
 Abstract class for managing a variety of identity certificates. 
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| CertificateEncodingException | 
 Certificate Encoding Exception. 
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| CertificateException | 
 This exception indicates one of a variety of certificate problems. 
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| CertificateExpiredException | 
 Certificate Expired Exception. 
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| 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. 
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| CertificateFactorySpi | 
 This class defines the Service Provider Interface (SPI)
 for the CertificateFactory class. 
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| CertificateNotYetValidException | 
 Certificate is not yet valid exception. 
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| CertificateParsingException | 
 Certificate Parsing Exception. 
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| CertPath | 
 An immutable sequence of certificates (a certification path). 
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| CertPathBuilder | 
 A class for building certification paths (also known as certificate chains). 
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| CertPathBuilderException | 
 An exception indicating one of a variety of problems encountered when
 building a certification path with a CertPathBuilder. 
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| CertPathBuilderResult | 
 A specification of the result of a certification path builder algorithm. 
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| CertPathBuilderSpi | 
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| CertPathChecker | 
 Performs one or more checks on each Certificate of a
 CertPath. 
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| CertPathParameters | 
 A specification of certification path algorithm parameters. 
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| CertPathValidator | 
 A class for validating certification paths (also known as certificate
 chains). 
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| CertPathValidatorException | 
 An exception indicating one of a variety of problems encountered when
 validating a certification path. 
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| CertPathValidatorException.BasicReason | 
 The BasicReason enumerates the potential reasons that a certification
 path of any type may be invalid. 
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| CertPathValidatorException.Reason | 
 The reason the validation algorithm failed. 
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| CertPathValidatorResult | 
 A specification of the result of a certification path validator algorithm. 
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| CertPathValidatorSpi | 
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| CertSelector | 
 A selector that defines a set of criteria for selecting
 Certificates. 
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| CertStore | 
 A class for retrieving Certificates and CRLs
 from a repository. 
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| CertStoreException | 
 An exception indicating one of a variety of problems retrieving
 certificates and CRLs from a CertStore. 
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| CertStoreParameters | 
 A specification of CertStore parameters. 
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| CertStoreSpi | 
The  Service Provider Interface ( SPI)
 for the  CertStore class.  
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| CRL | 
 This class is an abstraction of certificate revocation lists (CRLs) that
 have different formats but important common uses. 
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| CRLException | 
 CRL (Certificate Revocation List) Exception. 
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| CRLReason | 
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| CRLSelector | 
 A selector that defines a set of criteria for selecting CRLs. 
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| Extension | 
 This interface represents an X.509 extension. 
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| PKIXCertPathChecker | 
 An abstract class that performs one or more checks on an
 X509Certificate. 
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| PKIXCertPathValidatorResult | 
 This class represents the successful result of the PKIX certification
 path validation algorithm. 
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| PKIXParameters | 
 Parameters used as input for the PKIX CertPathValidator
 algorithm. 
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| PKIXReason | 
 The PKIXReason enumerates the potential PKIX-specific reasons
 that an X.509 certification path may be invalid according to the PKIX
 (RFC 5280) standard. 
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| PKIXRevocationChecker.Option | 
 Various revocation options that can be specified for the revocation
 checking mechanism. 
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| PolicyNode | 
 An immutable valid policy tree node as defined by the PKIX certification
 path validation algorithm. 
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| PolicyQualifierInfo | 
 An immutable policy qualifier represented by the ASN.1 PolicyQualifierInfo
 structure. 
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| TrustAnchor | 
 A trust anchor or most-trusted Certification Authority (CA). 
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| URICertStoreParameters | 
 Parameters used as input for CertStore algorithms which use
 information contained in a URI to retrieve certificates and CRLs. 
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| X509Certificate | 
 
 Abstract class for X.509 certificates. 
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| X509CRLEntry | 
 Abstract class for a revoked certificate in a CRL (Certificate
 Revocation List). 
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| X509Extension | 
 Interface for an X.509 extension. 
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