1package org.bouncycastle.asn1.ess;
2
3import org.bouncycastle.asn1.ASN1Encodable;
4import org.bouncycastle.asn1.ASN1OctetString;
5import org.bouncycastle.asn1.DERObject;
6import org.bouncycastle.asn1.DEROctetString;
7
8public class ContentIdentifier
9    extends ASN1Encodable
10{
11     ASN1OctetString value;
12
13    public static ContentIdentifier getInstance(Object o)
14    {
15        if (o == null || o instanceof ContentIdentifier)
16        {
17            return (ContentIdentifier) o;
18        }
19        else if (o instanceof ASN1OctetString)
20        {
21            return new ContentIdentifier((ASN1OctetString) o);
22        }
23
24        throw new IllegalArgumentException(
25                "unknown object in 'ContentIdentifier' factory : "
26                        + o.getClass().getName() + ".");
27    }
28
29    /**
30     * Create from OCTET STRING whose octets represent the identifier.
31     */
32    public ContentIdentifier(
33        ASN1OctetString value)
34    {
35        this.value = value;
36    }
37
38    /**
39     * Create from byte array representing the identifier.
40     */
41    public ContentIdentifier(
42        byte[] value)
43    {
44        this(new DEROctetString(value));
45    }
46
47    public ASN1OctetString getValue()
48    {
49        return value;
50    }
51
52    /**
53     * The definition of ContentIdentifier is
54     * <pre>
55     * ContentIdentifier ::=  OCTET STRING
56     * </pre>
57     * id-aa-contentIdentifier OBJECT IDENTIFIER ::= { iso(1)
58     *  member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs9(9)
59     *  smime(16) id-aa(2) 7 }
60     */
61    public DERObject toASN1Object()
62    {
63        return value;
64    }
65}
66