Package Summary  Overview Summary

class:Certificate [NONE]

  • All Implemented Interfaces:
    Serializable
    Direct Known Subclasses:
    X509Certificate

    public abstract class Certificate
    extends Object
    implements Serializable
    

    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.

    Since:
    1.2
    See Also:
    X509Certificate, CertificateFactory, Serialized Form

constructor:<init>(java.lang.String) [NONE]

  • 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 Security Standard Algorithm Names Specification for information about standard certificate types.

method:getType() [NONE]

  • getType

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

method:equals(java.lang.Object) [NONE]

  • equals

    public boolean equals​(Object other)
    Compares this certificate for equality with the specified object. If the other object is an instanceofCertificate, 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

method:hashCode() [NONE]

method:getEncoded() [NONE]

  • 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.

method:verify(java.security.PublicKey) [NONE]

method:verify(java.security.PublicKey,java.lang.String) [NONE]

method:verify(java.security.PublicKey,java.security.Provider) [NONE]

  • 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

method:toString() [NONE]

  • toString

    public abstract String toString()
    Returns a string representation of this certificate.
    Overrides:
    toString in class Object
    Returns:
    a string representation of this certificate.

method:getPublicKey() [NONE]

  • getPublicKey

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

method:writeReplace() [NONE]

  • 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

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