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package org.bouncycastle.asn1.test;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.math.BigInteger;
import java.util.Arrays;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.bouncycastle.asn1.ASN1Integer;
import org.bouncycastle.asn1.ASN1Null;
import org.bouncycastle.asn1.ASN1ObjectIdentifier;
import org.bouncycastle.asn1.ASN1SequenceParser;
import org.bouncycastle.asn1.ASN1StreamParser;
import org.bouncycastle.asn1.BERSequenceGenerator;
import org.bouncycastle.asn1.DERSequenceGenerator;
import org.bouncycastle.util.encoders.Hex;
public class ASN1SequenceParserTest
extends TestCase
{
private static final byte[] seqData = Hex.decode("3006020100060129");
private static final byte[] nestedSeqData = Hex.decode("300b0201000601293003020101");
private static final byte[] expTagSeqData = Hex.decode("a1083006020100060129");
private static final byte[] implTagSeqData = Hex.decode("a106020100060129");
private static final byte[] nestedSeqExpTagData = Hex.decode("300d020100060129a1053003020101");
private static final byte[] nestedSeqImpTagData = Hex.decode("300b020100060129a103020101");
private static final byte[] berSeqData = Hex.decode("30800201000601290000");
private static final byte[] berDERNestedSeqData = Hex.decode("308002010006012930030201010000");
private static final byte[] berNestedSeqData = Hex.decode("3080020100060129308002010100000000");
private static final byte[] berExpTagSeqData = Hex.decode("a180308002010006012900000000");
private static final byte[] berSeqWithDERNullData = Hex.decode("308005000201000601290000");
public void testDERWriting()
throws Exception
{
ByteArrayOutputStream bOut = new ByteArrayOutputStream();
DERSequenceGenerator seqGen = new DERSequenceGenerator(bOut);
seqGen.addObject(new ASN1Integer(BigInteger.valueOf(0)));
seqGen.addObject(new ASN1ObjectIdentifier("1.1"));
seqGen.close();
assertTrue("basic DER writing test failed.", Arrays.equals(seqData, bOut.toByteArray()));
}
public void testNestedDERWriting()
throws Exception
{
ByteArrayOutputStream bOut = new ByteArrayOutputStream();
DERSequenceGenerator seqGen1 = new DERSequenceGenerator(bOut);
seqGen1.addObject(new ASN1Integer(BigInteger.valueOf(0)));
seqGen1.addObject(new ASN1ObjectIdentifier("1.1"));
DERSequenceGenerator seqGen2 = new DERSequenceGenerator(seqGen1.getRawOutputStream());
seqGen2.addObject(new ASN1Integer(BigInteger.valueOf(1)));
seqGen2.close();
seqGen1.close();
assertTrue("nested DER writing test failed.", Arrays.equals(nestedSeqData, bOut.toByteArray()));
}
public void testDERExplicitTaggedSequenceWriting()
throws Exception
{
ByteArrayOutputStream bOut = new ByteArrayOutputStream();
DERSequenceGenerator seqGen = new DERSequenceGenerator(bOut, 1, true);
seqGen.addObject(new ASN1Integer(BigInteger.valueOf(0)));
seqGen.addObject(new ASN1ObjectIdentifier("1.1"));
seqGen.close();
assertTrue("explicit tag writing test failed.", Arrays.equals(expTagSeqData, bOut.toByteArray()));
}
public void testDERImplicitTaggedSequenceWriting()
throws Exception
{
ByteArrayOutputStream bOut = new ByteArrayOutputStream();
DERSequenceGenerator seqGen = new DERSequenceGenerator(bOut, 1, false);
seqGen.addObject(new ASN1Integer(BigInteger.valueOf(0)));
seqGen.addObject(new ASN1ObjectIdentifier("1.1"));
seqGen.close();
assertTrue("implicit tag writing test failed.", Arrays.equals(implTagSeqData, bOut.toByteArray()));
}
public void testNestedExplicitTagDERWriting()
throws Exception
{
ByteArrayOutputStream bOut = new ByteArrayOutputStream();
DERSequenceGenerator seqGen1 = new DERSequenceGenerator(bOut);
seqGen1.addObject(new ASN1Integer(BigInteger.valueOf(0)));
seqGen1.addObject(new ASN1ObjectIdentifier("1.1"));
DERSequenceGenerator seqGen2 = new DERSequenceGenerator(seqGen1.getRawOutputStream(), 1, true);
seqGen2.addObject(new ASN1Integer(BigInteger.valueOf(1)));
seqGen2.close();
seqGen1.close();
assertTrue("nested explicit tagged DER writing test failed.", Arrays.equals(nestedSeqExpTagData, bOut.toByteArray()));
}
public void testNestedImplicitTagDERWriting()
throws Exception
{
ByteArrayOutputStream bOut = new ByteArrayOutputStream();
DERSequenceGenerator seqGen1 = new DERSequenceGenerator(bOut);
seqGen1.addObject(new ASN1Integer(BigInteger.valueOf(0)));
seqGen1.addObject(new ASN1ObjectIdentifier("1.1"));
DERSequenceGenerator seqGen2 = new DERSequenceGenerator(seqGen1.getRawOutputStream(), 1, false);
seqGen2.addObject(new ASN1Integer(BigInteger.valueOf(1)));
seqGen2.close();
seqGen1.close();
assertTrue("nested implicit tagged DER writing test failed.", Arrays.equals(nestedSeqImpTagData, bOut.toByteArray()));
}
public void testBERWriting()
throws Exception
{
ByteArrayOutputStream bOut = new ByteArrayOutputStream();
BERSequenceGenerator seqGen = new BERSequenceGenerator(bOut);
seqGen.addObject(new ASN1Integer(BigInteger.valueOf(0)));
seqGen.addObject(new ASN1ObjectIdentifier("1.1"));
seqGen.close();
assertTrue("basic BER writing test failed.", Arrays.equals(berSeqData, bOut.toByteArray()));
}
public void testNestedBERDERWriting()
throws Exception
{
ByteArrayOutputStream bOut = new ByteArrayOutputStream();
BERSequenceGenerator seqGen1 = new BERSequenceGenerator(bOut);
seqGen1.addObject(new ASN1Integer(BigInteger.valueOf(0)));
seqGen1.addObject(new ASN1ObjectIdentifier("1.1"));
DERSequenceGenerator seqGen2 = new DERSequenceGenerator(seqGen1.getRawOutputStream());
seqGen2.addObject(new ASN1Integer(BigInteger.valueOf(1)));
seqGen2.close();
seqGen1.close();
assertTrue("nested BER/DER writing test failed.", Arrays.equals(berDERNestedSeqData, bOut.toByteArray()));
}
public void testNestedBERWriting()
throws Exception
{
ByteArrayOutputStream bOut = new ByteArrayOutputStream();
BERSequenceGenerator seqGen1 = new BERSequenceGenerator(bOut);
seqGen1.addObject(new ASN1Integer(BigInteger.valueOf(0)));
seqGen1.addObject(new ASN1ObjectIdentifier("1.1"));
BERSequenceGenerator seqGen2 = new BERSequenceGenerator(seqGen1.getRawOutputStream());
seqGen2.addObject(new ASN1Integer(BigInteger.valueOf(1)));
seqGen2.close();
seqGen1.close();
assertTrue("nested BER writing test failed.", Arrays.equals(berNestedSeqData, bOut.toByteArray()));
}
public void testDERReading()
throws Exception
{
ASN1StreamParser aIn = new ASN1StreamParser(seqData);
ASN1SequenceParser seq = (ASN1SequenceParser)aIn.readObject();
Object o;
int count = 0;
assertNotNull("null sequence returned", seq);
while ((o = seq.readObject()) != null)
{
switch (count)
{
case 0:
assertTrue(o instanceof ASN1Integer);
break;
case 1:
assertTrue(o instanceof ASN1ObjectIdentifier);
break;
}
count++;
}
assertEquals("wrong number of objects in sequence", 2, count);
}
private void testNestedReading(
byte[] data)
throws Exception
{
ASN1StreamParser aIn = new ASN1StreamParser(data);
ASN1SequenceParser seq = (ASN1SequenceParser)aIn.readObject();
Object o;
int count = 0;
assertNotNull("null sequence returned", seq);
while ((o = seq.readObject()) != null)
{
switch (count)
{
case 0:
assertTrue(o instanceof ASN1Integer);
break;
case 1:
assertTrue(o instanceof ASN1ObjectIdentifier);
break;
case 2:
assertTrue(o instanceof ASN1SequenceParser);
ASN1SequenceParser s = (ASN1SequenceParser)o;
// NB: Must exhaust the nested parser
while (s.readObject() != null)
{
// Nothing
}
break;
}
count++;
}
assertEquals("wrong number of objects in sequence", 3, count);
}
public void testNestedDERReading()
throws Exception
{
testNestedReading(nestedSeqData);
}
public void testBERReading()
throws Exception
{
ASN1StreamParser aIn = new ASN1StreamParser(berSeqData);
ASN1SequenceParser seq = (ASN1SequenceParser)aIn.readObject();
Object o;
int count = 0;
assertNotNull("null sequence returned", seq);
while ((o = seq.readObject()) != null)
{
switch (count)
{
case 0:
assertTrue(o instanceof ASN1Integer);
break;
case 1:
assertTrue(o instanceof ASN1ObjectIdentifier);
break;
}
count++;
}
assertEquals("wrong number of objects in sequence", 2, count);
}
public void testNestedBERDERReading()
throws Exception
{
testNestedReading(berDERNestedSeqData);
}
public void testNestedBERReading()
throws Exception
{
testNestedReading(berNestedSeqData);
}
public void testBERExplicitTaggedSequenceWriting()
throws Exception
{
ByteArrayOutputStream bOut = new ByteArrayOutputStream();
BERSequenceGenerator seqGen = new BERSequenceGenerator(bOut, 1, true);
seqGen.addObject(new ASN1Integer(BigInteger.valueOf(0)));
seqGen.addObject(new ASN1ObjectIdentifier("1.1"));
seqGen.close();
assertTrue("explicit BER tag writing test failed.", Arrays.equals(berExpTagSeqData, bOut.toByteArray()));
}
public void testSequenceWithDERNullReading()
throws Exception
{
testParseWithNull(berSeqWithDERNullData);
}
private void testParseWithNull(byte[] data)
throws IOException
{
ASN1StreamParser aIn = new ASN1StreamParser(data);
ASN1SequenceParser seq = (ASN1SequenceParser)aIn.readObject();
Object o;
int count = 0;
assertNotNull("null sequence returned", seq);
while ((o = seq.readObject()) != null)
{
switch (count)
{
case 0:
assertTrue(o instanceof ASN1Null);
break;
case 1:
assertTrue(o instanceof ASN1Integer);
break;
case 2:
assertTrue(o instanceof ASN1ObjectIdentifier);
break;
}
count++;
}
assertEquals("wrong number of objects in sequence", 3, count);
}
public static Test suite()
{
return new TestSuite(ASN1SequenceParserTest.class);
}
}