Package java.security.cert

Class CertificateFactory

java.lang.Object

java.security.cert.CertificateFactory

public class CertificateFactory
extends Object

This class implements the functionality of a certificate factory algorithm, relying on parsing a stream of bytes.

It defines methods for parsing certificate chains (certificate paths) and Certificate Revocation Lists (CRLs).

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	CertificateFactory(CertificateFactorySpi certFacSpi, Provider provider, String type)	Creates a new CertificateFactory instance.

Method Summary

Modifier and Type	Method	Description
Certificate	generateCertificate(InputStream inStream)	Generates and initializes a Certificate from the provided input stream.
Collection<? extends Certificate>	generateCertificates(InputStream inStream)	Generates and initializes a collection of (unrelated) certificates from the provided input stream.
CertPath	generateCertPath(InputStream inStream)	Generates a CertPath (a certificate chain) from the provided InputStream.
CertPath	generateCertPath(InputStream inputStream, String encoding)	Generates a CertPath (a certificate chain) from the given inputStream, assuming the given encoding from getCertPathEncodings().
CertPath	generateCertPath(List<? extends Certificate> certificates)	Generates a CertPath from the provided list of certificates.
CRL	generateCRL(InputStream inStream)	Generates and initializes a Certificate Revocation List (CRL) from the provided input stream.
Collection<? extends CRL>	generateCRLs(InputStream inStream)	Generates and initializes a collection of Certificate Revocation List (CRL) from the provided input stream.
Iterator<String>	getCertPathEncodings()	Returns an Iterator over the supported CertPath encodings (as Strings).
static CertificateFactory	getInstance(String type)	Creates a new CertificateFactory instance that provides the requested certificate type.
static CertificateFactory	getInstance(String type, String provider)	Creates a new CertificateFactory instance from the specified provider that provides the requested certificate type.
static CertificateFactory	getInstance(String type, Provider provider)	Creates a new CertificateFactory instance from the specified provider that provides the requested certificate type.
Provider	getProvider()	Returns the Provider of the certificate factory represented by the certificate.
String	getType()	Returns the Certificate type.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

CertificateFactory

protected CertificateFactory(CertificateFactorySpi certFacSpi, Provider provider, String type)

Creates a new CertificateFactory instance.

Parameters:

certFacSpi - the implementation delegate.

provider - the associated provider.

type - the certificate type.

Method Details

getInstance

public static final CertificateFactory getInstance(String type) throws CertificateException

Creates a new CertificateFactory instance that provides the requested certificate type.

Parameters:

type - the certificate type.

Returns:

the new CertificateFactory instance.

Throws:

CertificateException - if the specified certificate type is not available at any installed provider.

NullPointerException - if type == null

getInstance

public static final CertificateFactory getInstance(String type, String provider) throws CertificateException, NoSuchProviderException

Creates a new CertificateFactory instance from the specified provider that provides the requested certificate type.

Parameters:

type - the certificate type.

provider - the name of the provider providing certificates of the specified type.

Returns:

the new CertificateFactory instance.

Throws:

CertificateException - if the specified certificate type is not available by the specified provider.

NoSuchProviderException - if no provider with the specified name can be found.

IllegalArgumentException - if provider == null || provider.isEmpty()

NullPointerException - it type is null.

getInstance

public static final CertificateFactory getInstance(String type, Provider provider) throws CertificateException

Creates a new CertificateFactory instance from the specified provider that provides the requested certificate type.

Parameters:

type - the certificate type.

provider - the name of the provider providing certificates of the specified type.

Returns:

the new CertificateFactory instance.

Throws:

CertificateException - if the specified certificate type is not available at the specified provider.

IllegalArgumentException - if the specified provider is null.

NullPointerException - if type == null

IllegalArgumentException - if provider == null

getProvider

public final Provider getProvider()

Returns the Provider of the certificate factory represented by the certificate.

Returns:

the provider of this certificate factory.

getType

public final String getType()

Returns the Certificate type.

Returns:

type of certificate being used.

generateCertificate

public final Certificate generateCertificate(InputStream inStream) throws CertificateException

Generates and initializes a Certificate from the provided input stream.

Parameters:

inStream - the stream from where data is read to create the Certificate.

Returns:

an initialized Certificate.

Throws:

CertificateException - if parsing problems are detected.

getCertPathEncodings

public final Iterator<String> getCertPathEncodings()

Returns an Iterator over the supported CertPath encodings (as Strings). The first element is the default encoding scheme to apply.

Returns:

an iterator over supported CertPath encodings (as Strings).

generateCertPath

public final CertPath generateCertPath(InputStream inStream) throws CertificateException

Generates a CertPath (a certificate chain) from the provided InputStream. The default encoding scheme is applied.

Parameters:

inStream - InputStream with encoded data.

Returns:

a CertPath initialized from the provided data.

Throws:

CertificateException - if parsing problems are detected.

generateCertPath

public final CertPath generateCertPath(InputStream inputStream, String encoding) throws CertificateException

Generates a CertPath (a certificate chain) from the given inputStream, assuming the given encoding from getCertPathEncodings().

Throws:

CertificateException - if parsing problems are detected.

UnsupportedOperationException - if the provider does not implement this method.

generateCertPath

public final CertPath generateCertPath(List<? extends Certificate> certificates) throws CertificateException

Generates a CertPath from the provided list of certificates. The encoding is the default encoding.

Parameters:

certificates - the list containing certificates in a format supported by the CertificateFactory.

Returns:

a CertPath initialized from the provided data.

Throws:

CertificateException - if parsing problems are detected.

UnsupportedOperationException - if the provider does not implement this method.

generateCertificates

public final Collection<? extends Certificate> generateCertificates(InputStream inStream) throws CertificateException

Generates and initializes a collection of (unrelated) certificates from the provided input stream.

Parameters:

inStream - the stream from which the data is read to create the collection.

Returns:

an initialized collection of certificates.

Throws:

CertificateException - if parsing problems are detected.

generateCRL

public final CRL generateCRL(InputStream inStream) throws CRLException

Generates and initializes a Certificate Revocation List (CRL) from the provided input stream.

Parameters:

inStream - the stream from where data is read to create the CRL.

Returns:

an initialized CRL.

Throws:

CRLException - if parsing problems are detected.

generateCRLs

public final Collection<? extends CRL> generateCRLs(InputStream inStream) throws CRLException

Generates and initializes a collection of Certificate Revocation List (CRL) from the provided input stream.

Parameters:

inStream - the stream from which the data is read to create the CRLs.

Returns:

an initialized collection of CRLs.

Throws:

CRLException - if parsing problems are detected.