Class CertificateFactorySpi

java.lang.Object
java.security.cert.CertificateFactorySpi
public abstract class CertificateFactorySpi extends Object
This class defines the Service Provider Interface (SPI) for the CertificateFactory class. All the abstract methods in this class must be implemented by each cryptographic service provider who wishes to supply the implementation of a certificate factory for a particular certificate type, e.g., X.509.

Certificate factories are used to generate certificate, certification path (CertPath) and certificate revocation list (CRL) objects from their encodings.

A certificate factory for X.509 must return certificates that are an instance of java.security.cert.X509Certificate, and CRLs that are an instance of java.security.cert.X509CRL.

Since:
1.2
See Also:

  • Constructor Summary

    Constructors
    Constructor
    Description
    CertificateFactorySpi()
    Constructor for subclasses to call.

  • Method Summary

    Modifier and Type
    Method
    Description
    abstract Certificate
    engineGenerateCertificate(InputStream inStream)
    Generates a certificate object and initializes it with the data read from the input stream inStream.
    abstract Collection<? extends Certificate>
    engineGenerateCertificates(InputStream inStream)
    Returns a (possibly empty) collection view of the certificates read from the given input stream inStream.
    CertPath
    engineGenerateCertPath(InputStream inStream)
    Generates a CertPath object and initializes it with the data read from the InputStream inStream.
    CertPath
    engineGenerateCertPath(InputStream inStream, String encoding)
    Generates a CertPath object and initializes it with the data read from the InputStream inStream.
    CertPath
    engineGenerateCertPath(List<? extends Certificate> certificates)
    Generates a CertPath object and initializes it with a List of Certificates.
    abstract CRL
    engineGenerateCRL(InputStream inStream)
    Generates a certificate revocation list (CRL) object and initializes it with the data read from the input stream inStream.
    abstract Collection<? extends CRL>
    engineGenerateCRLs(InputStream inStream)
    Returns a (possibly empty) collection view of the CRLs read from the given input stream inStream.
    Iterator<String>
    engineGetCertPathEncodings()
    Returns an iteration of the CertPath encodings supported by this certificate factory, with the default encoding first.

    Methods declared in class Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    Modifier and Type
    Method
    Description
    protected Object
    clone()
    Answers a new instance of the same class as the receiver, whose slots have been filled in with the values in the slots of the receiver.
    boolean
    equals(Object o)
    Compares the argument to the receiver, and answers true if they represent the same object using a class specific comparison.
    protected void
    finalize()
    Deprecated, for removal: This API element is subject to removal in a future version.
    May cause performance issues, deadlocks and hangs.
    final Class<? extends Object>
    getClass()
    Answers the unique instance of java.lang.Class which represents the class of the receiver.
    int
    hashCode()
    Answers an integer hash code for the receiver.
    final void
    notify()
    Causes one thread which is waiting on the receiver to be made ready to run.
    final void
    notifyAll()
    Causes all threads which are waiting on the receiver to be made ready to run.
    String
    toString()
    Answers a string containing a concise, human-readable description of the receiver.
    final void
    wait()
    Causes the thread which sent this message to be made not ready to run pending some change in the receiver (as indicated by notify or notifyAll).
    final void
    wait(long time)
    Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.
    final void
    wait(long time, int frac)
    Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.

  • Constructor Details

    • CertificateFactorySpi

      public CertificateFactorySpi()
      Constructor for subclasses to call.

  • Method Details

    • engineGenerateCertificate

      public abstract Certificate engineGenerateCertificate(InputStream inStream) throws CertificateException
      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 mark and 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.

      Parameters:
      inStream - an input stream with the certificate data.
      Returns:
      a certificate object initialized with the data from the input stream.
      Throws:
      CertificateException - on parsing errors.

    • engineGenerateCertPath

      public CertPath engineGenerateCertPath(InputStream inStream) throws CertificateException
      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.

      This method was added to version 1.4 of the Java 2 Platform Standard Edition. In order to maintain backwards compatibility with existing service providers, this method cannot be abstract and by default throws an UnsupportedOperationException.

      Parameters:
      inStream - an InputStream containing the data
      Returns:
      a CertPath initialized with the data from the InputStream
      Throws:
      CertificateException - if an exception occurs while decoding
      UnsupportedOperationException - if the method is not supported
      Since:
      1.4

    • engineGenerateCertPath

      public CertPath engineGenerateCertPath(InputStream inStream, String encoding) throws CertificateException
      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.

      This method was added to version 1.4 of the Java 2 Platform Standard Edition. In order to maintain backwards compatibility with existing service providers, this method cannot be abstract and by default throws an UnsupportedOperationException.

      Parameters:
      inStream - an InputStream containing the data
      encoding - the encoding used for the data
      Returns:
      a CertPath initialized with the data from the InputStream
      Throws:
      CertificateException - if an exception occurs while decoding or the encoding requested is not supported
      UnsupportedOperationException - if the method is not supported
      Since:
      1.4

    • engineGenerateCertPath

      public CertPath engineGenerateCertPath(List<? extends Certificate> certificates) throws CertificateException
      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.

      This method was added to version 1.4 of the Java 2 Platform Standard Edition. In order to maintain backwards compatibility with existing service providers, this method cannot be abstract and by default throws an UnsupportedOperationException.

      Parameters:
      certificates - a List of Certificates
      Returns:
      a CertPath initialized with the supplied list of certificates
      Throws:
      CertificateException - if an exception occurs
      UnsupportedOperationException - if the method is not supported
      Since:
      1.4

    • engineGetCertPathEncodings

      public Iterator<String> engineGetCertPathEncodings()
      Returns an iteration of the CertPath encodings supported by this certificate factory, with the default encoding first. See the CertPath Encodings section in the Java Security Standard Algorithm Names Specification for information about standard encoding names.

      Attempts to modify the returned Iterator via its remove method result in an UnsupportedOperationException.

      This method was added to version 1.4 of the Java 2 Platform Standard Edition. In order to maintain backwards compatibility with existing service providers, this method cannot be abstract and by default throws an UnsupportedOperationException.

      Returns:
      an Iterator over the names of the supported CertPath encodings (as Strings)
      Throws:
      UnsupportedOperationException - if the method is not supported
      Since:
      1.4
      External Specifications

    • engineGenerateCertificates

      public abstract Collection<? extends Certificate> engineGenerateCertificates(InputStream inStream) throws CertificateException
      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 single DER-encoded certificate in the formats described for 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 mark and reset, this method will consume the entire input stream.

      Parameters:
      inStream - the input stream with the certificates.
      Returns:
      a (possibly empty) collection view of java.security.cert.Certificate objects initialized with the data from the input stream.
      Throws:
      CertificateException - on parsing errors.

    • engineGenerateCRL

      public abstract CRL engineGenerateCRL(InputStream inStream) throws CRLException
      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 mark and 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 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.

      Parameters:
      inStream - an input stream with the CRL data.
      Returns:
      a CRL object initialized with the data from the input stream.
      Throws:
      CRLException - on parsing errors.

    • engineGenerateCRLs

      public abstract Collection<? extends CRL> engineGenerateCRLs(InputStream inStream) throws CRLException
      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 single DER-encoded CRL. 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 mark and reset, this method will consume the entire input stream.

      Parameters:
      inStream - the input stream with the CRLs.
      Returns:
      a (possibly empty) collection view of java.security.cert.CRL objects initialized with the data from the input stream.
      Throws:
      CRLException - on parsing errors.