| package org.bouncycastle.asn1; |
| |
| import java.io.IOException; |
| import java.util.Enumeration; |
| |
| /** |
| * BER TaggedObject - in ASN.1 notation this is any object preceded by |
| * a [n] where n is some number - these are assumed to follow the construction |
| * rules (as with sequences). |
| */ |
| public class BERTaggedObject |
| extends DERTaggedObject |
| { |
| /** |
| * @param tagNo the tag number for this object. |
| * @param obj the tagged object. |
| */ |
| public BERTaggedObject( |
| int tagNo, |
| DEREncodable obj) |
| { |
| super(tagNo, obj); |
| } |
| |
| /** |
| * @param explicit true if an explicitly tagged object. |
| * @param tagNo the tag number for this object. |
| * @param obj the tagged object. |
| */ |
| public BERTaggedObject( |
| boolean explicit, |
| int tagNo, |
| DEREncodable obj) |
| { |
| super(explicit, tagNo, obj); |
| } |
| |
| /** |
| * create an implicitly tagged object that contains a zero |
| * length sequence. |
| */ |
| public BERTaggedObject( |
| int tagNo) |
| { |
| super(false, tagNo, new BERSequence()); |
| } |
| |
| void encode( |
| DEROutputStream out) |
| throws IOException |
| { |
| if (out instanceof ASN1OutputStream || out instanceof BEROutputStream) |
| { |
| out.writeTag(CONSTRUCTED | TAGGED, tagNo); |
| out.write(0x80); |
| |
| if (!empty) |
| { |
| if (!explicit) |
| { |
| Enumeration e; |
| if (obj instanceof ASN1OctetString) |
| { |
| if (obj instanceof BERConstructedOctetString) |
| { |
| e = ((BERConstructedOctetString)obj).getObjects(); |
| } |
| else |
| { |
| ASN1OctetString octs = (ASN1OctetString)obj; |
| BERConstructedOctetString berO = new BERConstructedOctetString(octs.getOctets()); |
| e = berO.getObjects(); |
| } |
| } |
| else if (obj instanceof ASN1Sequence) |
| { |
| e = ((ASN1Sequence)obj).getObjects(); |
| } |
| else if (obj instanceof ASN1Set) |
| { |
| e = ((ASN1Set)obj).getObjects(); |
| } |
| else |
| { |
| throw new RuntimeException("not implemented: " + obj.getClass().getName()); |
| } |
| |
| while (e.hasMoreElements()) |
| { |
| out.writeObject(e.nextElement()); |
| } |
| } |
| else |
| { |
| out.writeObject(obj); |
| } |
| } |
| |
| out.write(0x00); |
| out.write(0x00); |
| } |
| else |
| { |
| super.encode(out); |
| } |
| } |
| } |