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// Copyright (c) 2002 Graz University of Technology. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
//    this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
//    this list of conditions and the following disclaimer in the documentation
//    and/or other materials provided with the distribution.
//
// 3. The end-user documentation included with the redistribution, if any, must
//    include the following acknowledgment:
//
//    "This product includes software developed by IAIK of Graz University of
//     Technology."
//
//    Alternately, this acknowledgment may appear in the software itself, if and
//    wherever such third-party acknowledgments normally appear.
//
// 4. The names "Graz University of Technology" and "IAIK of Graz University of
//    Technology" must not be used to endorse or promote products derived from
//    this software without prior written permission.
//
// 5. Products derived from this software may not be called "IAIK PKCS Wrapper",
//    nor may "IAIK" appear in their name, without prior written permission of
//    Graz University of Technology.
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// THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
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// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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package iaik.pkcs.pkcs11.objects;

import iaik.pkcs.pkcs11.Session;
import iaik.pkcs.pkcs11.TokenException;
import iaik.pkcs.pkcs11.Util;
import iaik.pkcs.pkcs11.wrapper.Constants;

/**
 * Objects of this class represent X.509 public key certificate as specified by
 * PKCS#11 v2.11.
 *
 * @author Karl Scheibelhofer
 * @version 1.0
 * @invariants (subject_ <> null)
 *             and (id_ <> null)
 *             and (issuer_ <> null)
 *             and (serialNumber_ <> null)
 *             and (value_ <> null)
 */
public class X509PublicKeyCertificate extends Certificate {

    /**
     * The subject attribute of this certificate.
     */
    protected ByteArrayAttribute subject_;

    /**
     * The ID attribute of this certificate.
     */
    protected ByteArrayAttribute id_;

    /**
     * The issuer attribute of this certificate.
     */
    protected ByteArrayAttribute issuer_;

    /**
     * The serial number attribute of this certificate.
     * Notice that netscape needs the raw serial number, but PKCS#11 defines
     * this attribute as DER encoded integer.
     */
    protected ByteArrayAttribute serialNumber_;

    /**
     * The value attribute of this certificate; i.e. BER-encoded certificate.
     */
    protected ByteArrayAttribute value_;

    /**
     * This attribute gives the URL where the complete certificate can be
     * obtained.
     */
    protected CharArrayAttribute url_;

    /**
     * SHA-1 hash of the subject public key.
     */
    protected ByteArrayAttribute hashOfSubjectPublicKey_;

    /**
     * SHA-1 hash of the issuer public key.
     */
    protected ByteArrayAttribute hashOfIssuerPublicKey_;

    /**
     * Java MIDP security domain:
     * 0 = unspecified (default value),
     * 1 = manufacturer,
     * 2 = operator,
     * 3 = third party
     */
    protected LongAttribute javaMidpSecurityDomain_;

    /**
     * Default Constructor.
     *
     * @preconditions
     * @postconditions
     */
    public X509PublicKeyCertificate() {
        super();
        certificateType_.setLongValue(CertificateType.X_509_PUBLIC_KEY);
    }

    /**
     * Called by getInstance to create an instance of a PKCS#11 X.509 public key
     * certificate.
     *
     * @param session
     *          The session to use for reading attributes. This session must
     *          have the appropriate rights; i.e. it must be a user-session, if
     *          it is a private object.
     * @param objectHandle
     *          The object handle as given from the PKCS#111 module.
     * @exception TokenException
     *              If getting the attributes failed.
     * @preconditions (session <> null)
     * @postconditions
     */
    protected X509PublicKeyCertificate(Session session, long objectHandle)
        throws TokenException {
        super(session, objectHandle);
        certificateType_.setLongValue(CertificateType.X_509_PUBLIC_KEY);
    }

    /**
     * The getInstance method of the Certificate class uses this method to
     * create an instance of a PKCS#11 X.509 public key certificate.
     *
     * @param session
     *          The session to use for reading attributes. This session must
     *          have the appropriate rights; i.e. it must be a user-session, if
     *          it is a private object.
     * @param objectHandle
     *          The object handle as given from the PKCS#111 module.
     * @return The object representing the PKCS#11 object. The returned object
     *         can be casted to the according sub-class.
     * @exception TokenException
     *              If getting the attributes failed.
     * @preconditions (session <> null)
     * @postconditions (result <> null)
     */
    public static Object getInstance(Session session, long objectHandle)
        throws TokenException {
        return new X509PublicKeyCertificate(session, objectHandle);
    }

    /**
     * Put all attributes of the given object into the attributes table of this
     * object. This method is only static to be able to access invoke the
     * implementation of this method for each class separately (see use in
     * clone()).
     *
     * @param object
     *          The object to handle.
     * @preconditions (object <> null)
     * @postconditions
     */
    protected static void putAttributesInTable(
            X509PublicKeyCertificate object) {
        Util.requireNonNull("object", object);
        object.attributeTable_.put(Attribute.SUBJECT, object.subject_);
        object.attributeTable_.put(Attribute.ID, object.id_);
        object.attributeTable_.put(Attribute.ISSUER, object.issuer_);
        object.attributeTable_.put(Attribute.SERIAL_NUMBER,
            object.serialNumber_);
        object.attributeTable_.put(Attribute.VALUE, object.value_);
        object.attributeTable_.put(Attribute.URL, object.url_);
        object.attributeTable_.put(Attribute.HASH_OF_SUBJECT_PUBLIC_KEY,
            object.hashOfSubjectPublicKey_);
        object.attributeTable_.put(Attribute.HASH_OF_ISSUER_PUBLIC_KEY,
            object.hashOfIssuerPublicKey_);
        object.attributeTable_.put(Attribute.JAVA_MIDP_SECURITY_DOMAIN,
            object.javaMidpSecurityDomain_);
    }

    /**
     * Allocates the attribute objects for this class and adds them to the
     * attribute table.
     *
     * @preconditions
     * @postconditions
     */
    @Override
    protected void allocateAttributes() {
        super.allocateAttributes();

        subject_ = new ByteArrayAttribute(Attribute.SUBJECT);
        id_ = new ByteArrayAttribute(Attribute.ID);
        issuer_ = new ByteArrayAttribute(Attribute.ISSUER);
        serialNumber_ = new ByteArrayAttribute(Attribute.SERIAL_NUMBER);
        value_ = new ByteArrayAttribute(Attribute.VALUE);
        url_ = new CharArrayAttribute(Attribute.URL);
        hashOfSubjectPublicKey_ = new ByteArrayAttribute(
            Attribute.HASH_OF_SUBJECT_PUBLIC_KEY);
        hashOfIssuerPublicKey_ = new ByteArrayAttribute(
            Attribute.HASH_OF_ISSUER_PUBLIC_KEY);
        javaMidpSecurityDomain_ = new LongAttribute(
            Attribute.JAVA_MIDP_SECURITY_DOMAIN);

        putAttributesInTable(this);
    }

    /**
     * Create a (deep) clone of this object.
     *
     * @return A clone of this object.
     * @preconditions
     * @postconditions (result <> null)
     *                 and (result instanceof X509PublicKeyCertificate)
     *                 and (result.equals(this))
     */
    @Override
    public java.lang.Object clone() {
        X509PublicKeyCertificate clone
            = (X509PublicKeyCertificate) super.clone();

        clone.subject_ = (ByteArrayAttribute) this.subject_.clone();
        clone.id_ = (ByteArrayAttribute) this.id_.clone();
        clone.issuer_ = (ByteArrayAttribute) this.issuer_.clone();
        clone.serialNumber_ = (ByteArrayAttribute) this.serialNumber_.clone();
        clone.value_ = (ByteArrayAttribute) this.value_.clone();
        clone.url_ = (CharArrayAttribute) this.url_.clone();
        clone.hashOfSubjectPublicKey_ = (ByteArrayAttribute)
            this.hashOfSubjectPublicKey_.clone();
        clone.hashOfIssuerPublicKey_ = (ByteArrayAttribute)
            this.hashOfIssuerPublicKey_.clone();
        clone.javaMidpSecurityDomain_ = (LongAttribute)
            this.javaMidpSecurityDomain_.clone();

        // put all cloned attributes into the new table
        putAttributesInTable(clone);

        return clone;
    }

    /**
     * Compares all member variables of this object with the other object.
     * Returns only true, if all are equal in both objects.
     *
     * @param otherObject
     *          The other object to compare to.
     * @return True, if other is an instance of this class and all member
     *         variables of both objects are equal. False, otherwise.
     * @preconditions
     * @postconditions
     */
    @Override
    public boolean equals(java.lang.Object otherObject) {
        if (this == otherObject) {
            return true;
        }

        if (!(otherObject instanceof X509PublicKeyCertificate)) {
            return false;
        }

        X509PublicKeyCertificate other = (X509PublicKeyCertificate) otherObject;
        return super.equals(other)
                && this.subject_.equals(other.subject_)
                && this.id_.equals(other.id_)
                && this.issuer_.equals(other.issuer_)
                && this.serialNumber_.equals(other.serialNumber_)
                && this.value_.equals(other.value_)
                && this.url_.equals(other.url_)
                && this.hashOfSubjectPublicKey_.equals(
                        other.hashOfSubjectPublicKey_)
                && this.hashOfIssuerPublicKey_.equals(
                        other.hashOfIssuerPublicKey_)
                && this.javaMidpSecurityDomain_.equals(
                        other.javaMidpSecurityDomain_);
    }

    /**
     * Gets the subject attribute of this X.509 public key certificate.
     *
     * @return The subject attribute of this X.509 public key certificate.
     * @preconditions
     * @postconditions (result <> null)
     */
    public ByteArrayAttribute getSubject() {
        return subject_;
    }

    /**
     * Gets the ID attribute of this X.509 public key certificate.
     *
     * @return The ID attribute of this X.509 public key certificate.
     * @preconditions
     * @postconditions (result <> null)
     */
    public ByteArrayAttribute getId() {
        return id_;
    }

    /**
     * Gets the issuer attribute of this X.509 public key certificate.
     *
     * @return The issuer attribute of this X.509 public key certificate.
     * @preconditions
     * @postconditions (result <> null)
     */
    public ByteArrayAttribute getIssuer() {
        return issuer_;
    }

    /**
     * Gets the serial number attribute of this X.509 public key certificate.
     *
     * @return The serial number attribute of this X.509 public key certificate.
     * @preconditions
     * @postconditions (result <> null)
     */
    public ByteArrayAttribute getSerialNumber() {
        return serialNumber_;
    }

    /**
     * Gets the value attribute of this X.509 public key certificate.
     *
     * @return The value attribute of this X.509 public key certificate.
     * @preconditions
     * @postconditions (result <> null)
     */
    public ByteArrayAttribute getValue() {
        return value_;
    }

    /**
     * Get the URL attribute of this object.
     *
     * @return Contains the URL as a char array.
     * @preconditions
     * @postconditions (result <> null)
     */
    public CharArrayAttribute getUrl() {
        return url_;
    }

    /**
     * Gets the hash of subject public key attribute of this X.509 public key
     * certificate.
     *
     * @return The hash of subject public key attribute of this X.509 public key
     *         certificate.
     * @preconditions
     * @postconditions (result <> null)
     */
    public ByteArrayAttribute getHashOfSubjectPublicKey() {
        return hashOfSubjectPublicKey_;
    }

    /**
     * Gets the hash of issuer public key attribute of this X.509 public key
     * certificate.
     *
     * @return The hash of issuer public key attribute of this X.509 public key
     *         certificate.
     * @preconditions
     * @postconditions (result <> null)
     */
    public ByteArrayAttribute getHashOfIssuerPublicKey() {
        return hashOfIssuerPublicKey_;
    }

    /**
     * Gets the java midp security domain attribute of the PKCS#11 certificate.
     *
     * @return The java midp security domain category attribute.
     * @preconditions
     * @postconditions (result <> null)
     */
    public LongAttribute getJavaMidpSecurityDomain() {
        return javaMidpSecurityDomain_;
    }

    /**
     * The overriding of this method should ensure that the objects of this
     * class work correctly in a hashtable.
     *
     * @return The hash code of this object.
     * @preconditions
     * @postconditions
     */
    @Override
    public int hashCode() {
        return issuer_.hashCode() ^ serialNumber_.hashCode();
    }

    /**
     * Read the values of the attributes of this object from the token.
     *
     * @param session
     *          The session to use for reading attributes. This session must
     *          have the appropriate rights; i.e. it must be a user-session, if
     *          it is a private object.
     * @exception TokenException
     *              If getting the attributes failed.
     * @preconditions (session <> null)
     * @postconditions
     */
    @Override
    public void readAttributes(Session session)
        throws TokenException {
        super.readAttributes(session);

        Object.getAttributeValues(session, objectHandle_, new Attribute[] {
            subject_, id_, issuer_, serialNumber_, value_ });
        Object.getAttributeValues(session, objectHandle_, new Attribute[] {
            url_, hashOfSubjectPublicKey_, hashOfIssuerPublicKey_,
            javaMidpSecurityDomain_ });
    }

    /**
     * This method returns a string representation of the current object. The
     * output is only for debugging purposes and should not be used for other
     * purposes.
     *
     * @return A string presentation of this object for debugging output.
     * @preconditions
     * @postconditions (result <> null)
     */
    @Override
    public String toString() {
        StringBuilder buffer = new StringBuilder(256);

        buffer.append(super.toString());

        buffer.append(Constants.NEWLINE_INDENT);
        buffer.append("Subject (DER, hex): ");
        buffer.append(subject_.toString());

        buffer.append(Constants.NEWLINE_INDENT);
        buffer.append("ID (hex): ");
        buffer.append(id_.toString());

        buffer.append(Constants.NEWLINE_INDENT);
        buffer.append("Issuer (DER, hex): ");
        buffer.append(issuer_.toString());

        buffer.append(Constants.NEWLINE_INDENT);
        buffer.append("Serial Number (DER, hex): ");
        buffer.append(serialNumber_.toString());

        buffer.append(Constants.NEWLINE_INDENT);
        buffer.append("Value (BER, hex): ");
        buffer.append(value_.toString());

        buffer.append(Constants.NEWLINE_INDENT);
        buffer.append("URL: ");
        buffer.append(url_.toString());

        buffer.append(Constants.NEWLINE_INDENT);
        buffer.append("Hash Of Subject Public Key: ");
        buffer.append(hashOfSubjectPublicKey_.toString());

        buffer.append(Constants.NEWLINE_INDENT);
        buffer.append("Hash Of Issuer Public Key: ");
        buffer.append(hashOfIssuerPublicKey_.toString());

        buffer.append(Constants.NEWLINE_INDENT);
        buffer.append("Java MIDP Security Domain: ");
        buffer.append(javaMidpSecurityDomain_.toString());

        return buffer.toString();
    }

}




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