File	Doc	Category	Size	Date	Package
CertificateFactory.java	API Doc	Java SE 5 API	18672	Fri Aug 26 14:57:16 BST 2005	java.security.cert

CertificateFactory

• java.lang.Object

FileInputStream fis = new FileInputStream(filename);
BufferedInputStream bis = new BufferedInputStream(fis);

CertificateFactory cf = CertificateFactory.getInstance("X.509");

while (bis.available() > 0) {
Certificate cert = cf.generateCertificate(bis);
System.out.println(cert.toString());
}

FileInputStream fis = new FileInputStream(filename);
CertificateFactory cf = CertificateFactory.getInstance("X.509");
Collection c = cf.generateCertificates(fis);
Iterator i = c.iterator();
while (i.hasNext()) {
Certificate cert = (Certificate)i.next();
System.out.println(cert);
}

Fields Summary
private String	type
private Provider	provider
private CertificateFactorySpi	certFacSpi

Constructors Summary

protected CertificateFactory(CertificateFactorySpi certFacSpi, Provider provider, String type) Creates a CertificateFactory object of the given type, and encapsulates the given provider implementation (SPI object) in it. param certFacSpi the provider implementation. param provider the provider. param type the certificate type. this.certFacSpi = certFacSpi; this.provider = provider; this.type = type;

Methods Summary
public final java.security.cert.CRL	generateCRL(java.io.InputStream inStream) Generates a certificate revocation list (CRL) object and initializes it with the data read from the input stream inStream. In order to take advantage of the specialized CRL format supported by this certificate factory, the returned CRL object can be typecast to the corresponding CRL class. For example, if this certificate factory implements X.509 CRLs, the returned CRL object can be typecast to the X509CRL class. Note that if the given input stream does not support {@link java.io.InputStream#mark(int) mark} and {@link java.io.InputStream#reset() reset}, this method will consume the entire input stream. Otherwise, each call to this method consumes one CRL and the read position of the input stream is positioned to the next available byte after the the inherent end-of-CRL marker. If the data in the input stream does not contain an inherent end-of-CRL marker (other than EOF) and there is trailing data after the CRL is parsed, a CRLException is thrown. param inStream an input stream with the CRL data. return a CRL object initialized with the data from the input stream. exception CRLException on parsing errors. return certFacSpi.engineGenerateCRL(inStream);
public final java.util.Collection	generateCRLs(java.io.InputStream inStream) Returns a (possibly empty) collection view of the CRLs read from the given input stream inStream. In order to take advantage of the specialized CRL format supported by this certificate factory, each element in the returned collection view can be typecast to the corresponding CRL class. For example, if this certificate factory implements X.509 CRLs, the elements in the returned collection can be typecast to the X509CRL class. In the case of a certificate factory for X.509 CRLs, inStream may contain a sequence of DER-encoded CRLs. In addition, inStream may contain a PKCS#7 CRL set. This is a PKCS#7 SignedData object, with the only significant field being crls. In particular, the signature and the contents are ignored. This format allows multiple CRLs to be downloaded at once. If no CRLs are present, an empty collection is returned. Note that if the given input stream does not support {@link java.io.InputStream#mark(int) mark} and {@link java.io.InputStream#reset() reset}, this method will consume the entire input stream. param inStream the input stream with the CRLs. return a (possibly empty) collection view of java.security.cert.CRL objects initialized with the data from the input stream. exception CRLException on parsing errors. return certFacSpi.engineGenerateCRLs(inStream);
public final java.security.cert.CertPath	generateCertPath(java.io.InputStream inStream, java.lang.String encoding) Generates a CertPath object and initializes it with the data read from the InputStream inStream. The data is assumed to be in the specified encoding. See Appendix A in the Java Certification Path API Programmer's Guide for information about standard encoding names and their formats. param inStream an InputStream containing the data param encoding the encoding used for the data return a CertPath initialized with the data from the InputStream exception CertificateException if an exception occurs while decoding or the encoding requested is not supported since 1.4 return(certFacSpi.engineGenerateCertPath(inStream, encoding));
public final java.security.cert.CertPath	generateCertPath(java.util.List certificates) Generates a CertPath object and initializes it with a List of Certificates. The certificates supplied must be of a type supported by the CertificateFactory. They will be copied out of the supplied List object. param certificates a List of Certificates return a CertPath initialized with the supplied list of certificates exception CertificateException if an exception occurs since 1.4 return(certFacSpi.engineGenerateCertPath(certificates));
public final java.security.cert.CertPath	generateCertPath(java.io.InputStream inStream) Generates a CertPath object and initializes it with the data read from the InputStream inStream. The data is assumed to be in the default encoding. The name of the default encoding is the first element of the Iterator returned by the {@link #getCertPathEncodings getCertPathEncodings} method. param inStream an InputStream containing the data return a CertPath initialized with the data from the InputStream exception CertificateException if an exception occurs while decoding since 1.4 return(certFacSpi.engineGenerateCertPath(inStream));
public final java.security.cert.Certificate	generateCertificate(java.io.InputStream inStream) Generates a certificate object and initializes it with the data read from the input stream inStream. In order to take advantage of the specialized certificate format supported by this certificate factory, the returned certificate object can be typecast to the corresponding certificate class. For example, if this certificate factory implements X.509 certificates, the returned certificate object can be typecast to the X509Certificate class. In the case of a certificate factory for X.509 certificates, the certificate provided in inStream must be DER-encoded and may be supplied in binary or printable (Base64) encoding. If the certificate is provided in Base64 encoding, it must be bounded at the beginning by -----BEGIN CERTIFICATE-----, and must be bounded at the end by -----END CERTIFICATE-----. Note that if the given input stream does not support {@link java.io.InputStream#mark(int) mark} and {@link java.io.InputStream#reset() reset}, this method will consume the entire input stream. Otherwise, each call to this method consumes one certificate and the read position of the input stream is positioned to the next available byte after the inherent end-of-certificate marker. If the data in the input stream does not contain an inherent end-of-certificate marker (other than EOF) and there is trailing data after the certificate is parsed, a CertificateException is thrown. param inStream an input stream with the certificate data. return a certificate object initialized with the data from the input stream. exception CertificateException on parsing errors. return certFacSpi.engineGenerateCertificate(inStream);
public final java.util.Collection	generateCertificates(java.io.InputStream inStream) Returns a (possibly empty) collection view of the certificates read from the given input stream inStream. In order to take advantage of the specialized certificate format supported by this certificate factory, each element in the returned collection view can be typecast to the corresponding certificate class. For example, if this certificate factory implements X.509 certificates, the elements in the returned collection can be typecast to the X509Certificate class. In the case of a certificate factory for X.509 certificates, inStream may contain a sequence of DER-encoded certificates in the formats described for {@link #generateCertificate(java.io.InputStream) generateCertificate}. In addition, inStream may contain a PKCS#7 certificate chain. This is a PKCS#7 SignedData object, with the only significant field being certificates. In particular, the signature and the contents are ignored. This format allows multiple certificates to be downloaded at once. If no certificates are present, an empty collection is returned. Note that if the given input stream does not support {@link java.io.InputStream#mark(int) mark} and {@link java.io.InputStream#reset() reset}, this method will consume the entire input stream. param inStream the input stream with the certificates. return a (possibly empty) collection view of java.security.cert.Certificate objects initialized with the data from the input stream. exception CertificateException on parsing errors. return certFacSpi.engineGenerateCertificates(inStream);
public final java.util.Iterator	getCertPathEncodings() Returns an iteration of the CertPath encodings supported by this certificate factory, with the default encoding first. See Appendix A in the Java Certification Path API Programmer's Guide for information about standard encoding names and their formats. Attempts to modify the returned Iterator via its remove method result in an UnsupportedOperationException. return an Iterator over the names of the supported CertPath encodings (as Strings) since 1.4 return(certFacSpi.engineGetCertPathEncodings());
public static final java.security.cert.CertificateFactory	getInstance(java.lang.String type) Generates a certificate factory object that implements the specified certificate type. If the default provider package provides an implementation of the requested certificate type, an instance of certificate factory containing that implementation is returned. If the type is not available in the default package, other packages are searched. param type the name of the requested certificate type. See Appendix A in the Java Cryptography Architecture API Specification & Reference for information about standard certificate types. return a certificate factory object for the specified type. exception CertificateException if the requested certificate type is not available in the default provider package or any of the other provider packages that were searched. try { Instance instance = GetInstance.getInstance("CertificateFactory", CertificateFactorySpi.class, type); return new CertificateFactory((CertificateFactorySpi)instance.impl, instance.provider, type); } catch (NoSuchAlgorithmException e) { throw new CertificateException(type + " not found", e); }
public static final java.security.cert.CertificateFactory	getInstance(java.lang.String type, java.lang.String provider) Generates a certificate factory object for the specified certificate type from the specified provider. param type the certificate type param provider the name of the provider. return a certificate factory object for the specified type. exception CertificateException if the certificate type is not available from the specified provider. exception NoSuchProviderException if the provider has not been configured. see Provider try { Instance instance = GetInstance.getInstance("CertificateFactory", CertificateFactorySpi.class, type, provider); return new CertificateFactory((CertificateFactorySpi)instance.impl, instance.provider, type); } catch (NoSuchAlgorithmException e) { throw new CertificateException(type + " not found", e); }
public static final java.security.cert.CertificateFactory	getInstance(java.lang.String type, java.security.Provider provider) Generates a certificate factory object for the specified certificate type from the specified provider. Note: the provider doesn't have to be registered. param type the certificate type param provider the provider return a certificate factory object for the specified type. exception CertificateException if the certificate type is not available from the specified provider. exception IllegalArgumentException if the provider is null. see Provider since 1.4 try { Instance instance = GetInstance.getInstance("CertificateFactory", CertificateFactorySpi.class, type, provider); return new CertificateFactory((CertificateFactorySpi)instance.impl, instance.provider, type); } catch (NoSuchAlgorithmException e) { throw new CertificateException(type + " not found", e); }
public final java.security.Provider	getProvider() Returns the provider of this certificate factory. return the provider of this certificate factory. return this.provider;
public final java.lang.String	getType() Returns the name of the certificate type associated with this certificate factory. return the name of the certificate type associated with this certificate factory. return this.type;