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      1 /*
      2  *  Licensed to the Apache Software Foundation (ASF) under one or more
      3  *  contributor license agreements.  See the NOTICE file distributed with
      4  *  this work for additional information regarding copyright ownership.
      5  *  The ASF licenses this file to You under the Apache License, Version 2.0
      6  *  (the "License"); you may not use this file except in compliance with
      7  *  the License.  You may obtain a copy of the License at
      8  *
      9  *     http://www.apache.org/licenses/LICENSE-2.0
     10  *
     11  *  Unless required by applicable law or agreed to in writing, software
     12  *  distributed under the License is distributed on an "AS IS" BASIS,
     13  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14  *  See the License for the specific language governing permissions and
     15  *  limitations under the License.
     16  */
     17 
     18 /**
     19 * @author Alexander Y. Kleymenov
     20 * @version $Revision$
     21 */
     22 
     23 package org.apache.harmony.security.x509;
     24 
     25 import java.util.Date;
     26 import org.apache.harmony.security.asn1.ASN1GeneralizedTime;
     27 import org.apache.harmony.security.asn1.ASN1Implicit;
     28 import org.apache.harmony.security.asn1.ASN1Sequence;
     29 import org.apache.harmony.security.asn1.ASN1Type;
     30 import org.apache.harmony.security.asn1.BerInputStream;
     31 
     32 /**
     33  * The class encapsulates the ASN.1 DER encoding/decoding work
     34  * with the following certificate extension (OID: 2.5.29.16)
     35  * (as specified in RFC 3280 -
     36  *  Internet X.509 Public Key Infrastructure.
     37  *  Certificate and Certificate Revocation List (CRL) Profile.
     38  *  http://www.ietf.org/rfc/rfc3280.txt):
     39  *
     40  * <pre>
     41  * PrivateKeyUsagePeriod ::= SEQUENCE {
     42  *      notBefore       [0]     GeneralizedTime OPTIONAL,
     43  *      notAfter        [1]     GeneralizedTime OPTIONAL
     44  * }
     45  * </pre>
     46  */
     47 public final class PrivateKeyUsagePeriod {
     48     /** the value of notBeforeDate field of the structure */
     49     private final Date notBeforeDate;
     50     /** the value of notAfterDate field of the structure */
     51     private final Date notAfterDate;
     52     /** the ASN.1 encoded form of PrivateKeyUsagePeriod */
     53     private byte[] encoding;
     54 
     55     public PrivateKeyUsagePeriod(Date notBeforeDate, Date notAfterDate) {
     56         this(notBeforeDate, notAfterDate, null);
     57     }
     58 
     59     private PrivateKeyUsagePeriod(Date notBeforeDate, Date notAfterDate, byte[] encoding) {
     60         this.notBeforeDate = notBeforeDate;
     61         this.notAfterDate = notAfterDate;
     62         this.encoding = encoding;
     63     }
     64 
     65     /**
     66      * Returns the value of notBefore field of the structure.
     67      */
     68     public Date getNotBefore() {
     69         return notBeforeDate;
     70     }
     71 
     72     /**
     73      * Returns the value of notAfter field of the structure.
     74      */
     75     public Date getNotAfter() {
     76         return notAfterDate;
     77     }
     78 
     79     /**
     80      * Returns ASN.1 encoded form of this X.509 PrivateKeyUsagePeriod value.
     81      */
     82     public byte[] getEncoded() {
     83         if (encoding == null) {
     84             encoding = ASN1.encode(this);
     85         }
     86         return encoding;
     87     }
     88 
     89     /**
     90      * ASN.1 DER X.509 PrivateKeyUsagePeriod encoder/decoder class.
     91      */
     92     public static final ASN1Sequence ASN1 = new ASN1Sequence(new ASN1Type[] {
     93             new ASN1Implicit(0, ASN1GeneralizedTime.getInstance()),
     94             new ASN1Implicit(1, ASN1GeneralizedTime.getInstance()) }) {
     95         {
     96             setOptional(0);
     97             setOptional(1);
     98         }
     99 
    100         @Override protected Object getDecodedObject(BerInputStream in) {
    101             Object[] values = (Object[])in.content;
    102             return new PrivateKeyUsagePeriod((Date) values[0], (Date) values[1], in.getEncoded());
    103         }
    104 
    105         @Override protected void getValues(Object object, Object[] values) {
    106             PrivateKeyUsagePeriod pkup = (PrivateKeyUsagePeriod) object;
    107             values[0] = pkup.notBeforeDate;
    108             values[1] = pkup.notAfterDate;
    109         }
    110     };
    111 }
    112 
    113