Certificate (Java SE 15 & JDK 15) (original) (raw)

Direct Known Subclasses:

[X509Certificate](X509Certificate.html "class in javax.security.cert")

@Deprecated(since="9", forRemoval=true) public abstract class Certificate extends Object

Deprecated, for removal: This API element is subject to removal in a future version.

Abstract class for managing a variety of identity certificates. An identity certificate is a guarantee by a principal that a public key is that of 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.

Note: The classes in the package javax.security.cert exist for compatibility with earlier versions of the Java Secure Sockets Extension (JSSE). New applications should instead use the standard Java SE certificate classes located injava.security.cert.

Since:

1.4

See Also:

X509Certificate

• Constructor Summary

Constructors

• Method Summary

• Constructor Details

  • Certificate

  public Certificate()
  Deprecated, for removal: This API element is subject to removal in a future version.

• Method Details

  • equals

  public boolean equals​(Object other)
  Deprecated, for removal: This API element is subject to removal in a future version.
  Compares this certificate for equality with the specified object. If the other object is aninstanceof Certificate, then its encoded form is retrieved and compared with the encoded form of this certificate.
  Overrides:
  [equals](../../../java/lang/Object.html#equals%28java.lang.Object%29) in class [Object](../../../java/lang/Object.html "class in java.lang")
  Parameters:
  other - the object to test for equality with this certificate.
  Returns:
  true if the encoded forms of the two certificates match, false otherwise.
  See Also:
  Object.hashCode(), HashMap

  • hashCode

  public int hashCode()
  Deprecated, for removal: This API element is subject to removal in a future version.
  Returns a hashcode value for this certificate from its encoded form.
  Overrides:
  [hashCode](../../../java/lang/Object.html#hashCode%28%29) in class [Object](../../../java/lang/Object.html "class in java.lang")
  Returns:
  the hashcode value.
  See Also:
  Object.equals(java.lang.Object), System.identityHashCode(java.lang.Object)

  • getEncoded

  Deprecated, for removal: This API element is subject to removal in a future version.
  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:
  encoded form of this certificate
  Throws:
  [CertificateEncodingException](CertificateEncodingException.html "class in javax.security.cert") - on internal certificate encoding failure

  • verify

  Deprecated, for removal: This API element is subject to removal in a future version.
  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](../../../java/security/NoSuchAlgorithmException.html "class in java.security") - on unsupported signature algorithms.
  [InvalidKeyException](../../../java/security/InvalidKeyException.html "class in java.security") - on incorrect key.
  [NoSuchProviderException](../../../java/security/NoSuchProviderException.html "class in java.security") - if there's no default provider.
  [SignatureException](../../../java/security/SignatureException.html "class in java.security") - on signature errors.
  [CertificateException](CertificateException.html "class in javax.security.cert") - on encoding errors.

  • verify

  Deprecated, for removal: This API element is subject to removal in a future version.
  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](../../../java/security/NoSuchAlgorithmException.html "class in java.security") - on unsupported signature algorithms.
  [InvalidKeyException](../../../java/security/InvalidKeyException.html "class in java.security") - on incorrect key.
  [NoSuchProviderException](../../../java/security/NoSuchProviderException.html "class in java.security") - on incorrect provider.
  [SignatureException](../../../java/security/SignatureException.html "class in java.security") - on signature errors.
  [CertificateException](CertificateException.html "class in javax.security.cert") - on encoding errors.

  • toString

  public abstract String toString()
  Deprecated, for removal: This API element is subject to removal in a future version.
  Returns a string representation of this certificate.
  Overrides:
  [toString](../../../java/lang/Object.html#toString%28%29) in class [Object](../../../java/lang/Object.html "class in java.lang")
  Returns:
  a string representation of this certificate.

  • getPublicKey

  public abstract PublicKey getPublicKey()
  Deprecated, for removal: This API element is subject to removal in a future version.
  Gets the public key from this certificate.
  Returns:
  the public key.