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Viewing changes to src/org/bouncycastle/asn1/cms/RecipientIdentifier.java

  • Committer: Brian Thomason
  • Date: 2011-12-20 17:20:32 UTC
  • Revision ID: brian.thomason@canonical.com-20111220172032-rdtm13jgdxtksacr
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src/org/bouncycastle/asn1/cms/RecipientIdentifier.java
 
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package org.bouncycastle.asn1.cms;
 
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import org.bouncycastle.asn1.ASN1Choice;
 
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import org.bouncycastle.asn1.ASN1Encodable;
 
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import org.bouncycastle.asn1.ASN1OctetString;
 
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import org.bouncycastle.asn1.ASN1TaggedObject;
 
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import org.bouncycastle.asn1.DEREncodable;
 
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import org.bouncycastle.asn1.DERObject;
 
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import org.bouncycastle.asn1.DERTaggedObject;
 
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public class RecipientIdentifier
 
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    extends ASN1Encodable
 
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    implements ASN1Choice
 
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{
 
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    private DEREncodable id;
 
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    public RecipientIdentifier(
 
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        IssuerAndSerialNumber id)
 
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    {
 
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        this.id = id;
 
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    }
 
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    public RecipientIdentifier(
 
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        ASN1OctetString id)
 
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    {
 
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        this.id = new DERTaggedObject(false, 0, id);
 
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    }
 
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    public RecipientIdentifier(
 
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        DERObject id)
 
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    {
 
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        this.id = id;
 
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    }
 
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    /**
 
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     * return a RecipientIdentifier object from the given object.
 
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     *
 
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     * @param o the object we want converted.
 
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     * @exception IllegalArgumentException if the object cannot be converted.
 
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     */
 
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    public static RecipientIdentifier getInstance(
 
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        Object o)
 
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    {
 
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        if (o == null || o instanceof RecipientIdentifier)
 
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        {
 
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            return (RecipientIdentifier)o;
 
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        }
 
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        if (o instanceof IssuerAndSerialNumber)
 
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        {
 
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            return new RecipientIdentifier((IssuerAndSerialNumber)o);
 
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        }
 
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        if (o instanceof ASN1OctetString)
 
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        {
 
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            return new RecipientIdentifier((ASN1OctetString)o);
 
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        }
 
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        if (o instanceof DERObject)
 
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        {
 
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            return new RecipientIdentifier((DERObject)o);
 
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        }
 
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        throw new IllegalArgumentException(
 
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          "Illegal object in RecipientIdentifier: " + o.getClass().getName());
 
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    } 
 
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    public boolean isTagged()
 
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    {
 
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        return (id instanceof ASN1TaggedObject);
 
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    }
 
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    public DEREncodable getId()
 
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    {
 
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        if (id instanceof ASN1TaggedObject)
 
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        {
 
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            return ASN1OctetString.getInstance((ASN1TaggedObject)id, false);
 
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        }
 
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        return IssuerAndSerialNumber.getInstance(id);
 
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    }
 
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    /** 
 
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     * Produce an object suitable for an ASN1OutputStream.
 
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     * <pre>
 
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     * RecipientIdentifier ::= CHOICE {
 
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     *     issuerAndSerialNumber IssuerAndSerialNumber,
 
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     *     subjectKeyIdentifier [0] SubjectKeyIdentifier 
 
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     * }
 
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     *
 
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     * SubjectKeyIdentifier ::= OCTET STRING
 
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     * </pre>
 
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     */
 
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    public DERObject toASN1Object()
 
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    {
 
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        return id.getDERObject();
 
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    }
 
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}