package org.bouncycastle.mail.smime.test;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.security.KeyPair;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.cert.CertificateEncodingException;
import java.security.cert.X509Certificate;
import java.util.Arrays;
import javax.mail.MessagingException;
import javax.mail.internet.MimeBodyPart;
import javax.crypto.Cipher;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.bouncycastle.cms.RecipientId;
import org.bouncycastle.cms.RecipientInformation;
import org.bouncycastle.cms.RecipientInformationStore;
import org.bouncycastle.cms.test.CMSTestUtil;
import org.bouncycastle.jce.PrincipalUtil;
import org.bouncycastle.mail.smime.SMIMEEnveloped;
import org.bouncycastle.mail.smime.SMIMEEnvelopedGenerator;
import org.bouncycastle.mail.smime.SMIMEEnvelopedParser;
import org.bouncycastle.mail.smime.SMIMEUtil;
import org.bouncycastle.mail.smime.util.FileBackedMimeBodyPart;
public class SMIMEEnvelopedTest
extends TestCase
{
private static String _signDN;
private static KeyPair _signKP;
private static String _reciDN;
private static KeyPair _reciKP;
private static X509Certificate _reciCert;
private static String _reciDN2;
private static KeyPair _reciKP2;
private static X509Certificate _reciCert2;
private static boolean _initialised = false;
private static void init()
throws Exception
{
if (!_initialised)
{
_initialised = true;
_signDN = "O=Bouncy Castle, C=AU";
_signKP = CMSTestUtil.makeKeyPair();
_reciDN = "CN=Doug, OU=Sales, O=Bouncy Castle, C=AU";
_reciKP = CMSTestUtil.makeKeyPair();
_reciCert = CMSTestUtil.makeCertificate(_reciKP, _reciDN, _signKP, _signDN);
_reciDN2 = "CN=Fred, OU=Sales, O=Bouncy Castle, C=AU";
_reciKP2 = CMSTestUtil.makeKeyPair();
_reciCert2 = CMSTestUtil.makeCertificate(_reciKP2, _reciDN2, _signKP, _signDN);
}
}
public SMIMEEnvelopedTest(
String name)
{
super(name);
}
public static void main(
String args[])
{
junit.textui.TestRunner.run(SMIMEEnvelopedTest.class);
}
public static Test suite()
throws Exception
{
return new SMIMETestSetup(new TestSuite(SMIMEEnvelopedTest.class));
}
public void setUp()
throws Exception
{
init();
}
public void testHeaders()
throws Exception
{
MimeBodyPart _msg = SMIMETestUtil.makeMimeBodyPart("WallaWallaWashington");
SMIMEEnvelopedGenerator gen = new SMIMEEnvelopedGenerator();
gen.addKeyTransRecipient(_reciCert);
//
// generate a MimeBodyPart object which encapsulates the content
// we want encrypted.
//
MimeBodyPart mp = gen.generate(_msg, SMIMEEnvelopedGenerator.DES_EDE3_CBC, "BC");
assertEquals("application/pkcs7-mime; name=\"smime.p7m\"; smime-type=enveloped-data", mp.getHeader("Content-Type")[0]);
assertEquals("attachment; filename=\"smime.p7m\"", mp.getHeader("Content-Disposition")[0]);
assertEquals("S/MIME Encrypted Message", mp.getHeader("Content-Description")[0]);
}
public void testDESEDE3Encrypted()
throws Exception
{
MimeBodyPart msg = SMIMETestUtil.makeMimeBodyPart("WallaWallaWashington");
String algorithm = SMIMEEnvelopedGenerator.DES_EDE3_CBC;
verifyAlgorithm(algorithm, msg);
}
public void testParserDESEDE3Encrypted()
throws Exception
{
MimeBodyPart msg = SMIMETestUtil.makeMimeBodyPart("WallaWallaWashington");
String algorithm = SMIMEEnvelopedGenerator.DES_EDE3_CBC;
verifyParserAlgorithm(algorithm, msg);
}
public void testIDEAEncrypted()
throws Exception
{
if (isPresent("IDEA"))
{
MimeBodyPart msg = SMIMETestUtil.makeMimeBodyPart("WallaWallaWashington");
String algorithm = SMIMEEnvelopedGenerator.IDEA_CBC;
verifyAlgorithm(algorithm, msg);
}
}
private boolean isPresent(String algorithm)
throws Exception
{
try
{
Cipher.getInstance(algorithm, "BC");
return true;
}
catch (NoSuchAlgorithmException e)
{
return false;
}
}
public void testRC2Encrypted()
throws Exception
{
MimeBodyPart msg = SMIMETestUtil.makeMimeBodyPart("WallaWallaWashington");
String algorithm = SMIMEEnvelopedGenerator.RC2_CBC;
verifyAlgorithm(algorithm, msg);
}
public void testCASTEncrypted()
throws Exception
{
MimeBodyPart msg = SMIMETestUtil.makeMimeBodyPart("WallaWallaWashington");
String algorithm = SMIMEEnvelopedGenerator.CAST5_CBC;
verifyAlgorithm(algorithm, msg);
}
public void testAES128Encrypted()
throws Exception
{
MimeBodyPart msg = SMIMETestUtil.makeMimeBodyPart("WallaWallaWashington");
String algorithm = SMIMEEnvelopedGenerator.AES128_CBC;
verifyAlgorithm(algorithm, msg);
}
public void testAES192Encrypted()
throws Exception
{
MimeBodyPart msg = SMIMETestUtil.makeMimeBodyPart("WallaWallaWashington");
String algorithm = SMIMEEnvelopedGenerator.AES192_CBC;
verifyAlgorithm(algorithm, msg);
}
public void testAES256Encrypted()
throws Exception
{
MimeBodyPart msg = SMIMETestUtil.makeMimeBodyPart("WallaWallaWashington");
String algorithm = SMIMEEnvelopedGenerator.AES256_CBC;
verifyAlgorithm(algorithm, msg);
}
public void testSubKeyId()
throws Exception
{
MimeBodyPart _msg = SMIMETestUtil.makeMimeBodyPart("WallaWallaWashington");
SMIMEEnvelopedGenerator gen = new SMIMEEnvelopedGenerator();
//
// create a subject key id - this has to be done the same way as
// it is done in the certificate associated with the private key
//
MessageDigest dig = MessageDigest.getInstance("SHA1", "BC");
dig.update(_reciCert.getPublicKey().getEncoded());
gen.addKeyTransRecipient(_reciCert.getPublicKey(), dig.digest());
//
// generate a MimeBodyPart object which encapsulates the content
// we want encrypted.
//
MimeBodyPart mp = gen.generate(_msg, SMIMEEnvelopedGenerator.DES_EDE3_CBC, "BC");
SMIMEEnveloped m = new SMIMEEnveloped(mp);
RecipientId recId = new RecipientId();
dig.update(_reciCert.getPublicKey().getEncoded());
recId.setSubjectKeyIdentifier(dig.digest());
RecipientInformationStore recipients = m.getRecipientInfos();
RecipientInformation recipient = recipients.get(recId);
MimeBodyPart res = SMIMEUtil.toMimeBodyPart(recipient.getContent(_reciKP.getPrivate(), "BC"));
verifyMessageBytes(_msg, res);
}
public void testCapEncrypt()
throws Exception
{
MimeBodyPart _msg = SMIMETestUtil.makeMimeBodyPart("WallaWallaWashington");
SMIMEEnvelopedGenerator gen = new SMIMEEnvelopedGenerator();
//
// create a subject key id - this has to be done the same way as
// it is done in the certificate associated with the private key
//
MessageDigest dig = MessageDigest.getInstance("SHA1", "BC");
dig.update(_reciCert.getPublicKey().getEncoded());
gen.addKeyTransRecipient(_reciCert.getPublicKey(), dig.digest());
//
// generate a MimeBodyPart object which encapsulates the content
// we want encrypted.
//
MimeBodyPart mp = gen.generate(_msg, SMIMEEnvelopedGenerator.RC2_CBC, 40, "BC");
SMIMEEnveloped m = new SMIMEEnveloped(mp);
RecipientId recId = new RecipientId();
dig.update(_reciCert.getPublicKey().getEncoded());
recId.setSubjectKeyIdentifier(dig.digest());
RecipientInformationStore recipients = m.getRecipientInfos();
RecipientInformation recipient = recipients.get(recId);
MimeBodyPart res = SMIMEUtil.toMimeBodyPart(recipient.getContent(_reciKP.getPrivate(), "BC"));
verifyMessageBytes(_msg, res);
}
public void testTwoRecipients()
throws Exception
{
MimeBodyPart _msg = SMIMETestUtil.makeMimeBodyPart("WallaWallaWashington");
SMIMEEnvelopedGenerator gen = new SMIMEEnvelopedGenerator();
gen.addKeyTransRecipient(_reciCert);
gen.addKeyTransRecipient(_reciCert2);
//
// generate a MimeBodyPart object which encapsulates the content
// we want encrypted.
//
MimeBodyPart mp = gen.generate(_msg, SMIMEEnvelopedGenerator.RC2_CBC, 40, "BC");
SMIMEEnvelopedParser m = new SMIMEEnvelopedParser(mp);
RecipientId recId = getRecipientId(_reciCert2);
RecipientInformationStore recipients = m.getRecipientInfos();
RecipientInformation recipient = recipients.get(recId);
FileBackedMimeBodyPart res = SMIMEUtil.toMimeBodyPart(recipient.getContentStream(_reciKP2.getPrivate(), "BC"));
verifyMessageBytes(_msg, res);
m = new SMIMEEnvelopedParser(mp);
res.dispose();
recId = getRecipientId(_reciCert);
recipients = m.getRecipientInfos();
recipient = recipients.get(recId);
res = SMIMEUtil.toMimeBodyPart(recipient.getContentStream(_reciKP.getPrivate(), "BC"));
verifyMessageBytes(_msg, res);
res.dispose();
}
private void verifyAlgorithm(
String algorithmOid,
MimeBodyPart msg)
throws Exception
{
SMIMEEnvelopedGenerator gen = new SMIMEEnvelopedGenerator();
gen.addKeyTransRecipient(_reciCert);
//
// generate a MimeBodyPart object which encapsulates the content
// we want encrypted.
//
MimeBodyPart mp = gen.generate(msg, algorithmOid, "BC");
SMIMEEnveloped m = new SMIMEEnveloped(mp);
RecipientId recId = getRecipientId(_reciCert);
RecipientInformationStore recipients = m.getRecipientInfos();
RecipientInformation recipient = recipients.get(recId);
MimeBodyPart res = SMIMEUtil.toMimeBodyPart(recipient.getContent(_reciKP.getPrivate(), "BC"));
verifyMessageBytes(msg, res);
}
private void verifyParserAlgorithm(
String algorithmOid,
MimeBodyPart msg)
throws Exception
{
SMIMEEnvelopedGenerator gen = new SMIMEEnvelopedGenerator();
gen.addKeyTransRecipient(_reciCert);
//
// generate a MimeBodyPart object which encapsulates the content
// we want encrypted.
//
MimeBodyPart mp = gen.generate(msg, algorithmOid, "BC");
SMIMEEnvelopedParser m = new SMIMEEnvelopedParser(mp);
RecipientId recId = getRecipientId(_reciCert);
RecipientInformationStore recipients = m.getRecipientInfos();
RecipientInformation recipient = recipients.get(recId);
MimeBodyPart res = SMIMEUtil.toMimeBodyPart(recipient.getContent(_reciKP.getPrivate(), "BC"));
verifyMessageBytes(msg, res);
}
private RecipientId getRecipientId(
X509Certificate cert)
throws IOException, CertificateEncodingException
{
RecipientId recId = new RecipientId();
recId.setSerialNumber(cert.getSerialNumber());
recId.setIssuer(PrincipalUtil.getIssuerX509Principal(cert).getEncoded());
return recId;
}
private void verifyMessageBytes(MimeBodyPart a, MimeBodyPart b)
throws IOException, MessagingException
{
ByteArrayOutputStream _baos = new ByteArrayOutputStream();
a.writeTo(_baos);
_baos.close();
byte[] _msgBytes = _baos.toByteArray();
_baos = new ByteArrayOutputStream();
b.writeTo(_baos);
_baos.close();
byte[] _resBytes = _baos.toByteArray();
assertEquals(true, Arrays.equals(_msgBytes, _resBytes));
}
}