public
abstract
class
Certificate
extends Object
| java.lang.Object | |
| ↳ | javax.security.cert.Certificate |
 Known Direct Subclasses
|
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 in
java.security.cert.
See also:
Public constructors | |
|---|---|
Certificate()
|
|
Public methods | |
|---|---|
boolean
|
equals(Object other)
Compares this certificate for equality with the specified object. |
abstract
byte[]
|
getEncoded()
Returns the encoded form of this certificate. |
abstract
PublicKey
|
getPublicKey()
Gets the public key from this certificate. |
int
|
hashCode()
Returns a hashcode value for this certificate from its encoded form. |
abstract
String
|
toString()
Returns a string representation of this certificate. |
abstract
void
|
verify(PublicKey key, String sigProvider)
Verifies that this certificate was signed using the private key that corresponds to the specified public key. |
abstract
void
|
verify(PublicKey key)
Verifies that this certificate was signed using the private key that corresponds to the specified public key. |
Inherited methods | |
|---|---|
From
class
java.lang.Object
| |
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.
| Parameters | |
|---|---|
other |
Object:
the object to test for equality with this certificate. |
| Returns | |
|---|---|
boolean |
true if the encoded forms of the two certificates match, false otherwise. |
byte[] getEncoded ()
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 | |
|---|---|
byte[] |
encoded form of this certificate |
| Throws | |
|---|---|
CertificateEncodingException |
on internal certificate encoding failure |
PublicKey getPublicKey ()
Gets the public key from this certificate.
| Returns | |
|---|---|
PublicKey |
the public key. |
int hashCode ()
Returns a hashcode value for this certificate from its encoded form.
| Returns | |
|---|---|
int |
the hashcode value. |
String toString ()
Returns a string representation of this certificate.
| Returns | |
|---|---|
String |
a string representation of this certificate. |
void verify (PublicKey key, String sigProvider)
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 |
PublicKey:
the PublicKey used to carry out the verification. |
sigProvider |
String:
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. |
void verify (PublicKey key)
Verifies that this certificate was signed using the private key that corresponds to the specified public key.
| Parameters | |
|---|---|
key |
PublicKey:
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. |
Developers