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package sun.security.x509;

import java.io.IOException;
import java.io.OutputStream;
import java.util.Enumeration;

import sun.security.util.*;

Represent the OCSP NoCheck Extension from RFC2560.

A CA may specify that an OCSP client can trust a responder for the
lifetime of the responder's certificate. The CA does so by including
the extension id-pkix-ocsp-nocheck. This SHOULD be a non-critical
extension. The value of the extension should be NULL. CAs issuing
such a certificate should realize that a compromise of the
responder's key is as serious as the compromise of a CA key used to
sign CRLs, at least for the validity period of this certificate. CA's
may choose to issue this type of certificate with a very short
lifetime and renew it frequently.
id-pkix-ocsp-nocheck OBJECT IDENTIFIER ::= { id-pkix-ocsp 5 }

Author:
Xuelei Fan
See Also:
Extension
CertAttrSet/**
 * Represent the OCSP NoCheck Extension from RFC2560.
 * <p>
 * A CA may specify that an OCSP client can trust a responder for the
 * lifetime of the responder's certificate. The CA does so by including
 * the extension id-pkix-ocsp-nocheck. This SHOULD be a non-critical
 * extension. The value of the extension should be NULL. CAs issuing
 * such a certificate should realize that a compromise of the
 * responder's key is as serious as the compromise of a CA key used to
 * sign CRLs, at least for the validity period of this certificate. CA's
 * may choose to issue this type of certificate with a very short
 * lifetime and renew it frequently.
 * <pre>
 * id-pkix-ocsp-nocheck OBJECT IDENTIFIER ::= { id-pkix-ocsp 5 }
 * </pre>
 *
 * @author Xuelei Fan
 * @see Extension
 * @see CertAttrSet
 */
public class OCSPNoCheckExtension extends Extension
    implements CertAttrSet<String> {

    
Identifier for this attribute, to be used with the
get, set, delete methods of Certificate, x509 type.
/**
     * Identifier for this attribute, to be used with the
     * get, set, delete methods of Certificate, x509 type.
     */
    public static final String IDENT =
                         "x509.info.extensions.OCSPNoCheck";
    
Attribute names.
/**
     * Attribute names.
     */
    public static final String NAME = "OCSPNoCheck";

    
Create a OCSPNoCheckExtension
/**
     * Create a OCSPNoCheckExtension
     */
    public OCSPNoCheckExtension() throws IOException {
        this.extensionId = PKIXExtensions.OCSPNoCheck_Id;
        this.critical = false;
        this.extensionValue = new byte[0];
    }

    
Create the extension from the passed DER encoded value.
Params:
critical – true if the extension is to be treated as critical.
value – an array of DER encoded bytes of the actual value.
Throws:
IOException – on error./**
     * Create the extension from the passed DER encoded value.
     *
     * @param critical true if the extension is to be treated as critical.
     * @param value an array of DER encoded bytes of the actual value.
     * @exception IOException on error.
     */
    public OCSPNoCheckExtension(Boolean critical, Object value)
        throws IOException {

        this.extensionId = PKIXExtensions.OCSPNoCheck_Id;
        this.critical = critical.booleanValue();

        // the value should be null, just ignore it here.
        this.extensionValue = new byte[0];
    }

    
Set the attribute value.
/**
     * Set the attribute value.
     */
    public void set(String name, Object obj) throws IOException {
        throw new IOException("No attribute is allowed by " +
                        "CertAttrSet:OCSPNoCheckExtension.");
    }

    
Get the attribute value.
/**
     * Get the attribute value.
     */
    public Object get(String name) throws IOException {
        throw new IOException("No attribute is allowed by " +
                        "CertAttrSet:OCSPNoCheckExtension.");
    }

    
Delete the attribute value.
/**
     * Delete the attribute value.
     */
    public void delete(String name) throws IOException {
        throw new IOException("No attribute is allowed by " +
                        "CertAttrSet:OCSPNoCheckExtension.");
    }

    
Return an enumeration of names of attributes existing within this
attribute.
/**
     * Return an enumeration of names of attributes existing within this
     * attribute.
     */
    public Enumeration<String> getElements() {
        return (new AttributeNameEnumeration()).elements();
    }

    
Return the name of this attribute.
/**
     * Return the name of this attribute.
     */
    public String getName() {
        return NAME;
    }
}