javax.security.cert
Class Certificate
- java.lang.Object
javax.security.cert.Certificate
- public abstract class Certificate
- extends Object
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 J2SE certificate classes located in
java.security.cert
.
Constructor Summary
Constructor and Description |
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Certificate()
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Method Summary
Modifier and Type | Method and Description |
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equals(Object other)
Compares this certificate for equality with the specified
object.
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getEncoded()
Returns the encoded form of this certificate.
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getPublicKey()
Gets the public key from this certificate.
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hashCode()
Returns a hashcode value for this certificate from its
encoded form.
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toString()
Returns a string representation of this certificate.
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verify(PublicKey key)
Verifies that this certificate was signed using the
private key that corresponds to the specified public key.
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verify(PublicKey key,String sigProvider)
Verifies that this certificate was signed using the
private key that corresponds to the specified public key.
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Methods inherited from class java.lang.Object |
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clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
Constructor Detail
Certificate
- public Certificate()
Method Detail
equals
- public boolean equals(Object other)
other
- the object to test for equality with this certificate. hashCode
- public int hashCode()
getEncoded
- public abstract byte[] getEncoded( )
- throws CertificateEncodingException
CertificateEncodingException
- on internal certificate
encoding failure verify
- public abstract void verify(PublicKey key)
- throws CertificateException
- NoSuchAlgorithmException
- InvalidKeyException
- NoSuchProviderException
- SignatureException
key
- the PublicKey used to carry out the verification. 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
key
- the PublicKey used to carry out the verification. sigProvider
- the name of the signature provider. NoSuchAlgorithmException
- on unsupported signature algorithms. InvalidKeyException
- on incorrect key. NoSuchProviderException
- on incorrect provider. SignatureException
- on signature errors. CertificateException
- on encoding errors. toString
- public abstract String toString( )
getPublicKey
- public abstract PublicKey getPublicKey( )
other
object is aninstanceof
Certificate
, then its encoded form is retrieved and compared with the encoded form of this certificate.