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Java Source Code / Java Documentation » 6.0 JDK Modules » j2me » java.security.cert

Source Cross Reference Class Diagram Java Document (Java Doc)

java.lang .Object

java.security.cert .Certificate

All known Subclasses:   java.security.cert .X509Certificate,
Certificate
abstract public class Certificate implements java.io.Serializable(Code)

Abstract class for managing a variety of identity certificates. An identity certificate is a binding of a principal to a public key which is vouched for by another principal. (A principal represents an entity such as an individual user, a group, or a corporation.)
This class is an abstraction for certificates that have different formats but important common uses. For example, different types of certificates, such as X.509 and PGP, share general certificate functionality (like encoding and verifying) and some types of information (like a public key).
X.509, PGP, and SDSI certificates can all be implemented by subclassing the Certificate class, even though they contain different sets of information, and they store and retrieve the information in different ways.
See Also:   X509Certificate
See Also:   CertificateFactory
author:
   Hemma Prafullchandra
version:
   1.25, 10/10/06

Inner Class :protected static class CertificateRep implements java.io.Serializable

Constructor Summary
protected Certificate(String type)
     Creates a certificate of the specified type.

Method Summary
public boolean equals(Object other)
     Compares this certificate for equality with the specified object.
abstract public byte[] getEncoded()
     Returns the encoded form of this certificate.
abstract public PublicKey getPublicKey()
     Gets the public key from this certificate.
final public String getType()
     Returns the type of this certificate.
public int hashCode()
     Returns a hashcode value for this certificate from its encoded form.
abstract public String toString()
     Returns a string representation of this certificate.
abstract public void verify(PublicKey key)
     Verifies that this certificate was signed using the private key that corresponds to the specified public key.
abstract public void verify(PublicKey key, String sigProvider)
     Verifies that this certificate was signed using the private key that corresponds to the specified public key.
protected Object writeReplace()
     Replace the Certificate to be serialized.

Constructor Detail
Certificate
protected Certificate(String type)(Code)
Creates a certificate of the specified type.
Parameters:
  type - the standard name of the certificate type.See Appendix A in the Java Cryptography Architecture API Specification & Reference for information about standard certificate types.

Method Detail
equals
public boolean equals(Object other)(Code)
Compares this certificate for equality with the specified object. If the other object is an instanceof Certificate, then its encoded form is retrieved and compared with the encoded form of this certificate.
Parameters:
  other - the object to test for equality with this certificate. true iff the encoded forms of the two certificatesmatch, false otherwise.

getEncoded
abstract public byte[] getEncoded() throws CertificateEncodingException(Code)
Returns the encoded form of this certificate. It is assumed that each certificate type would have only a single form of encoding; for example, X.509 certificates would be encoded as ASN.1 DER. the encoded form of this certificate
exception:
  CertificateEncodingException - if an encoding error occurs.

getPublicKey
abstract public PublicKey getPublicKey()(Code)
Gets the public key from this certificate. the public key.

getType
final public String getType()(Code)
Returns the type of this certificate. the type of this certificate.

hashCode
public int hashCode()(Code)
Returns a hashcode value for this certificate from its encoded form. the hashcode value.

toString
abstract public String toString()(Code)
Returns a string representation of this certificate. a string representation of this certificate.

verify
abstract public void verify(PublicKey key) throws CertificateException, NoSuchAlgorithmException, InvalidKeyException, NoSuchProviderException, SignatureException(Code)
Verifies that this certificate was signed using the private key that corresponds to the specified public key.
Parameters:
  key - the PublicKey used to carry out the verification.
exception:
  NoSuchAlgorithmException - on unsupported signaturealgorithms.
exception:
  InvalidKeyException - on incorrect key.
exception:
  NoSuchProviderException - if there's no default provider.
exception:
  SignatureException - on signature errors.
exception:
  CertificateException - on encoding errors.

verify
abstract public void verify(PublicKey key, String sigProvider) throws CertificateException, NoSuchAlgorithmException, InvalidKeyException, NoSuchProviderException, SignatureException(Code)
Verifies that this certificate was signed using the private key that corresponds to the specified public key. This method uses the signature verification engine supplied by the specified provider.
Parameters:
  key - the PublicKey used to carry out the verification.
Parameters:
  sigProvider - the name of the signature provider.
exception:
  NoSuchAlgorithmException - on unsupported signaturealgorithms.
exception:
  InvalidKeyException - on incorrect key.
exception:
  NoSuchProviderException - on incorrect provider.
exception:
  SignatureException - on signature errors.
exception:
  CertificateException - on encoding errors.

writeReplace
protected Object writeReplace() throws java.io.ObjectStreamException(Code)
Replace the Certificate to be serialized. the alternate Certificate object to be serialized
throws:
  java.io.ObjectStreamException - if a new object representing this Certificate could not be created

Methods inherited from java.lang.Object
public boolean equals(Object obj)(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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