Java compact1, compact2, compact3 java.security.cert Class Certificate（JDK8）

Constructor Detail

• Certificate

  protected Certificate(String type)

  Creates a certificate of the specified type.

  Parameters:

  type - the standard name of the certificate type. See the CertificateFactory section in the Java Cryptography Architecture Standard Algorithm Name Documentation for information about standard certificate types.

Method Detail

• getType

  public final String getType()

  Returns the type of this certificate.

  Returns:

  the type of this certificate.

• equals

  public boolean equals(Object other)

  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.

  Overrides:

  equals in class Object

  Parameters:

  other - the object to test for equality with this certificate.

  Returns:

  true iff the encoded forms of the two certificates match, false otherwise.

  See Also:

  Object.hashCode(), HashMap

• hashCode

  public int hashCode()

  Returns a hashcode value for this certificate from its encoded form.

  Overrides:

  hashCode in class Object

  Returns:

  the hashcode value.

  See Also:

  Object.equals(java.lang.Object), System.identityHashCode(java.lang.Object)

• getEncoded

  public abstract byte[] getEncoded()
                             throws CertificateEncodingException

  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.

  Returns:

  the encoded form of this certificate

  Throws:

  CertificateEncodingException - if an encoding error occurs.

• verify

  public abstract void verify(PublicKey key)
                       throws CertificateException,
                              NoSuchAlgorithmException,
                              InvalidKeyException,
                              NoSuchProviderException,
                              SignatureException

  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.

  Throws:

  NoSuchAlgorithmException - on unsupported signature algorithms.

  InvalidKeyException - on incorrect key.

  NoSuchProviderException - if there's no default provider.

  SignatureException - on signature errors.

  CertificateException - on encoding errors.

• verify

  public abstract void verify(PublicKey key,
                              String sigProvider)
                       throws CertificateException,
                              NoSuchAlgorithmException,
                              InvalidKeyException,
                              NoSuchProviderException,
                              SignatureException

  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.

  sigProvider - the name of the signature provider.

  Throws:

  NoSuchAlgorithmException - on unsupported signature algorithms.

  InvalidKeyException - on incorrect key.

  NoSuchProviderException - on incorrect provider.

  SignatureException - on signature errors.

  CertificateException - on encoding errors.

• verify

  public void verify(PublicKey key,
                     Provider sigProvider)
              throws CertificateException,
                     NoSuchAlgorithmException,
                     InvalidKeyException,
                     SignatureException

  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. Note that the specified Provider object does not have to be registered in the provider list.

  This method was added to version 1.8 of the Java 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:

  key - the PublicKey used to carry out the verification.

  sigProvider - the signature provider.

  Throws:

  NoSuchAlgorithmException - on unsupported signature algorithms.

  InvalidKeyException - on incorrect key.

  SignatureException - on signature errors.

  CertificateException - on encoding errors.

  UnsupportedOperationException - if the method is not supported

  Since:

  1.8

• toString

  public abstract String toString()

  Returns a string representation of this certificate.

  Overrides:

  toString in class Object

  Returns:

  a string representation of this certificate.

• getPublicKey

  public abstract PublicKey getPublicKey()

  Gets the public key from this certificate.

  Returns:

  the public key.

• writeReplace

  protected Object writeReplace()
                         throws ObjectStreamException

  Replace the Certificate to be serialized.

  Returns:

  the alternate Certificate object to be serialized

  Throws:

  ObjectStreamException - if a new object representing this Certificate could not be created

  Since:

  1.3