DERTaggedObject.java
资源名称:security.rar [点击查看]
上传用户:lior1029
上传日期:2013-05-07
资源大小:209k
文件大小:2k
源码类别:
CA认证
开发平台:
Java
- package org.bouncycastle.asn1;
- import java.io.*;
- /**
- * DER TaggedObject - in ASN.1 nottation this is any object proceeded by
- * a [n] where n is some number - these are assume to follow the construction
- * rules (as with sequences).
- */
- public class DERTaggedObject
- extends ASN1TaggedObject
- {
- /**
- * @param tagNo the tag number for this object.
- * @param obj the tagged object.
- */
- public DERTaggedObject(
- 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 DERTaggedObject(
- boolean explicit,
- int tagNo,
- DEREncodable obj)
- {
- super(explicit, tagNo, obj);
- }
- /**
- * create an implicitly tagged object that contains a zero
- * length sequence.
- */
- public DERTaggedObject(
- int tagNo)
- {
- super(false, tagNo, new DERSequence());
- }
- void encode(
- DEROutputStream out)
- throws IOException
- {
- if (!empty)
- {
- ByteArrayOutputStream bOut = new ByteArrayOutputStream();
- DEROutputStream dOut = new DEROutputStream(bOut);
- dOut.writeObject(obj);
- dOut.close();
- byte[] bytes = bOut.toByteArray();
- if (explicit)
- {
- out.writeEncoded(CONSTRUCTED | TAGGED | tagNo, bytes);
- }
- else
- {
- //
- // need to mark constructed types...
- //
- if ((bytes[0] & CONSTRUCTED) != 0)
- {
- bytes[0] = (byte)(CONSTRUCTED | TAGGED | tagNo);
- }
- else
- {
- bytes[0] = (byte)(TAGGED | tagNo);
- }
- out.write(bytes);
- }
- }
- else
- {
- out.writeEncoded(CONSTRUCTED | TAGGED | tagNo, new byte[0]);
- }
- }
- }