src/org/bouncycastle/asn1/BERConstructedSequence.java

   1 package org.bouncycastle.asn1;
   2
   3 import java.io.*;
   4 import java.util.*;
   5
   6 public class BERConstructedSequence
   7     extends DERConstructedSequence
   8 {
   9     /*
  10      * A note on the implementation:
  11      * <p>
  12      * As DER requires the constructed, definite-length model to
  13      * be used for structured types, this varies slightly from the
  14      * ASN.1 descriptions given. Rather than just outputing SEQUENCE,
  15      * we also have to specify CONSTRUCTED, and the objects length.
  16      */
  17     void encode(
  18         DEROutputStream out)
  19         throws IOException
  20     {
  21         if (out instanceof BEROutputStream)
  22         {
  23             ByteArrayOutputStream   bOut = new ByteArrayOutputStream();
  24             BEROutputStream         dOut = new BEROutputStream(bOut);
  25             Enumeration             e = getObjects();
  26
  27             while (e.hasMoreElements())
  28             {
  29                 Object    obj = e.nextElement();
  30
  31                 dOut.writeObject(obj);
  32             }
  33
  34             dOut.close();
  35
  36             byte[]  bytes = bOut.toByteArray();
  37
  38             out.write(SEQUENCE | CONSTRUCTED);
  39             out.write(0x80);
  40             out.write(bytes);
  41             out.write(0x00);
  42             out.write(0x00);
  43         }
  44         else
  45         {
  46             super.encode(out);
  47         }
  48     }
  49 }