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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 Boris Kuznetsov
     20 * @version $Revision$
     21 */
     22 package org.apache.harmony.security.pkcs7;
     23 
     24 import java.util.List;
     25 import org.apache.harmony.security.asn1.ASN1SetOf;
     26 import org.apache.harmony.security.asn1.BerInputStream;
     27 import org.apache.harmony.security.x501.AttributeTypeAndValue;
     28 
     29 /**
     30  * As defined in PKCS #7: Cryptographic Message Syntax Standard
     31  * (http://www.ietf.org/rfc/rfc2315.txt):
     32  * authenticatedAttributes is a set of attributes that are signed (i.e., authenticated) by the signer
     33  */
     34 final class AuthenticatedAttributes {
     35     private byte[] encoding;
     36     private final List<AttributeTypeAndValue> authenticatedAttributes;
     37 
     38     private AuthenticatedAttributes(byte[] encoding,
     39             List<AttributeTypeAndValue> authenticatedAttributes) {
     40         this.encoding = encoding;
     41         this.authenticatedAttributes = authenticatedAttributes;
     42     }
     43 
     44     public List<AttributeTypeAndValue> getAttributes() {
     45         return authenticatedAttributes;
     46     }
     47 
     48     /**
     49      * Returns ASN.1 encoded form of this authenticatedAttributes.
     50      */
     51     public byte[] getEncoded() {
     52         if (encoding == null) {
     53             encoding = ASN1.encode(this);
     54         }
     55         return encoding;
     56     }
     57 
     58     public static final ASN1SetOf ASN1 =
     59         new ASN1SetOf(AttributeTypeAndValue.ASN1) {
     60         @Override public Object getDecodedObject(BerInputStream in) {
     61             return new AuthenticatedAttributes(in.getEncoded(),
     62                     (List<AttributeTypeAndValue>) in.content);
     63         }
     64     };
     65 }
     66 
     67