// --- BEGIN COPYRIGHT BLOCK --- // This program is free software; you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation; version 2 of the License. // // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License along // with this program; if not, write to the Free Software Foundation, Inc., // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. // // (C) 2007 Red Hat, Inc. // All rights reserved. // --- END COPYRIGHT BLOCK --- package netscape.security.x509; import java.io.IOException; import java.io.InputStream; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; import java.io.OutputStream; import java.io.Serializable; import java.util.Enumeration; import java.util.Vector; import netscape.security.util.DerInputStream; import netscape.security.util.DerOutputStream; import netscape.security.util.DerValue; /** * This class defines the AlgorithmId for the Certificate. * * @author Amit Kapoor * @author Hemma Prafullchandra * @version 1.7 */ public class CertificateAlgorithmId implements CertAttrSet, Serializable { /** * */ private static final long serialVersionUID = 6084780721443376563L; private AlgorithmId algId; /** * Identifier for this attribute, to be used with the * get, set, delete methods of Certificate, x509 type. */ public static final String IDENT = "x509.info.algorithmID"; /** * Sub attributes name for this CertAttrSet. */ public static final String NAME = "algorithmID"; public static final String ALGORITHM = "algorithm"; /** * Default constructor for the certificate attribute. * * @param algId the Algorithm identifier */ public CertificateAlgorithmId(AlgorithmId algId) { this.algId = algId; } /** * Create the object, decoding the values from the passed DER stream. * * @param in the DerInputStream to read the serial number from. * @exception IOException on decoding errors. */ public CertificateAlgorithmId(DerInputStream in) throws IOException { DerValue val = in.getDerValue(); algId = AlgorithmId.parse(val); } /** * Create the object, decoding the values from the passed stream. * * @param in the InputStream to read the serial number from. * @exception IOException on decoding errors. */ public CertificateAlgorithmId(InputStream in) throws IOException { DerValue val = new DerValue(in); algId = AlgorithmId.parse(val); } /** * Return the algorithm identifier as user readable string. */ public String toString() { if (algId == null) return ""; return (algId.toString() + ", OID = " + (algId.getOID()).toString() + "\n"); } private void writeObject(ObjectOutputStream stream) throws IOException { encode(stream); } private void readObject(ObjectInputStream stream) throws IOException { decode(stream); } /** * Encode the algorithm identifier in DER form to the stream. * * @param out the DerOutputStream to marshal the contents to. * @exception IOException on errors. */ public void encode(OutputStream out) throws IOException { DerOutputStream tmp = new DerOutputStream(); algId.encode(tmp); out.write(tmp.toByteArray()); } /** * Decode the algorithm identifier from the passed stream. * * @param in the InputStream to unmarshal the contents from. * @exception IOException on errors. */ public void decode(InputStream in) throws IOException { DerValue derVal = new DerValue(in); algId = AlgorithmId.parse(derVal); } /** * Set the attribute value. */ public void set(String name, Object obj) throws IOException { if (!(obj instanceof AlgorithmId)) { throw new IOException("Attribute must be of type AlgorithmId."); } if (name.equalsIgnoreCase(ALGORITHM)) { algId = (AlgorithmId) obj; } else { throw new IOException("Attribute name not recognized by " + "CertAttrSet:CertificateAlgorithmId."); } } /** * Get the attribute value. */ public Object get(String name) throws IOException { if (name.equalsIgnoreCase(ALGORITHM)) { return (algId); } else { throw new IOException("Attribute name not recognized by " + "CertAttrSet:CertificateAlgorithmId."); } } /** * Delete the attribute value. */ public void delete(String name) throws IOException { if (name.equalsIgnoreCase(ALGORITHM)) { algId = null; } else { throw new IOException("Attribute name not recognized by " + "CertAttrSet:CertificateAlgorithmId."); } } /** * Return an enumeration of names of attributes existing within this * attribute. */ public Enumeration getAttributeNames() { Vector elements = new Vector(); elements.addElement(ALGORITHM); return (elements.elements()); } /** * Return the name of this attribute. */ public String getName() { return (NAME); } }