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| author | tknall <tknall@7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c> | 2006-12-01 12:20:24 +0000 |
|---|---|---|
| committer | tknall <tknall@7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c> | 2006-12-01 12:20:24 +0000 |
| commit | 6025b6016517c6d898d8957d1d7e03ba71431912 (patch) | |
| tree | b15bd6fa5ffe9588a9bca3f2b8a7e358f83b6eba /src/main/java/com/lowagie/bc/asn1/DERSequence.java | |
| parent | d2c77e820ab4aba8235d71275755021347b3ad10 (diff) | |
| download | pdf-as-3-6025b6016517c6d898d8957d1d7e03ba71431912.tar.gz pdf-as-3-6025b6016517c6d898d8957d1d7e03ba71431912.tar.bz2 pdf-as-3-6025b6016517c6d898d8957d1d7e03ba71431912.zip | |
Initial import of release 2.2.REL-2.2@923
git-svn-id: https://joinup.ec.europa.eu/svn/pdf-as/trunk@4 7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c
Diffstat (limited to 'src/main/java/com/lowagie/bc/asn1/DERSequence.java')
| -rw-r--r-- | src/main/java/com/lowagie/bc/asn1/DERSequence.java | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/src/main/java/com/lowagie/bc/asn1/DERSequence.java b/src/main/java/com/lowagie/bc/asn1/DERSequence.java new file mode 100644 index 0000000..5ffd2dd --- /dev/null +++ b/src/main/java/com/lowagie/bc/asn1/DERSequence.java @@ -0,0 +1,67 @@ +package com.lowagie.bc.asn1;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.util.Enumeration;
+
+public class DERSequence
+ extends ASN1Sequence
+{
+ /**
+ * create an empty sequence
+ */
+ public DERSequence()
+ {
+ }
+
+ /**
+ * create a sequence containing one object
+ */
+ public DERSequence(
+ DEREncodable obj)
+ {
+ this.addObject(obj);
+ }
+
+ /**
+ * create a sequence containing a vector of objects.
+ */
+ public DERSequence(
+ DEREncodableVector v)
+ {
+ for (int i = 0; i != v.size(); i++)
+ {
+ this.addObject(v.get(i));
+ }
+ }
+
+ /*
+ * A note on the implementation:
+ * <p>
+ * As DER requires the constructed, definite-length model to
+ * be used for structured types, this varies slightly from the
+ * ASN.1 descriptions given. Rather than just outputing SEQUENCE,
+ * we also have to specify CONSTRUCTED, and the objects length.
+ */
+ void encode(
+ DEROutputStream out)
+ throws IOException
+ {
+ ByteArrayOutputStream bOut = new ByteArrayOutputStream();
+ DEROutputStream dOut = new DEROutputStream(bOut);
+ Enumeration e = this.getObjects();
+
+ while (e.hasMoreElements())
+ {
+ Object obj = e.nextElement();
+
+ dOut.writeObject(obj);
+ }
+
+ dOut.close();
+
+ byte[] bytes = bOut.toByteArray();
+
+ out.writeEncoded(SEQUENCE | CONSTRUCTED, bytes);
+ }
+}
|