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*/
22package org.apache.harmony.security.pkcs7;
23
24import java.util.List;
25import org.apache.harmony.security.asn1.ASN1SetOf;
26import org.apache.harmony.security.asn1.BerInputStream;
27import 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 */
34final 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