public void TestTwoAesKek()
{
byte[] data = Encoding.ASCII.GetBytes("WallaWallaWashington");
KeyParameter kek1 = CmsTestUtil.MakeAes192Key();
KeyParameter kek2 = CmsTestUtil.MakeAes192Key();
CmsEnvelopedDataStreamGenerator edGen = new CmsEnvelopedDataStreamGenerator();
byte[] kekId1 = new byte[] { 1, 2, 3, 4, 5 };
byte[] kekId2 = new byte[] { 5, 4, 3, 2, 1 };
edGen.AddKekRecipient("AES192", kek1, kekId1);
edGen.AddKekRecipient("AES192", kek2, kekId2);
MemoryStream bOut = new MemoryStream();
Stream outStream = edGen.Open(
bOut,
CmsEnvelopedDataGenerator.DesEde3Cbc);
outStream.Write(data, 0, data.Length);
outStream.Close();
CmsEnvelopedDataParser ep = new CmsEnvelopedDataParser(bOut.ToArray());
RecipientInformationStore recipients = ep.GetRecipientInfos();
Assert.AreEqual(ep.EncryptionAlgOid, CmsEnvelopedDataGenerator.DesEde3Cbc);
RecipientID recSel = new RecipientID();
recSel.KeyIdentifier = kekId2;
RecipientInformation recipient = recipients.GetFirstRecipient(recSel);
Assert.AreEqual(recipient.KeyEncryptionAlgOid, "2.16.840.1.101.3.4.1.25");
CmsTypedStream recData = recipient.GetContentStream(kek2);
Assert.IsTrue(Arrays.AreEqual(data, CmsTestUtil.StreamToByteArray(recData.ContentStream)));
ep.Close();
}
public void TestECKeyAgree()
{
byte[] data = Hex.Decode("504b492d4320434d5320456e76656c6f706564446174612053616d706c65");
CmsEnvelopedDataStreamGenerator edGen = new CmsEnvelopedDataStreamGenerator();
edGen.AddKeyAgreementRecipient(
CmsEnvelopedDataGenerator.ECDHSha1Kdf,
OrigECKP.Private,
OrigECKP.Public,
ReciECCert,
CmsEnvelopedDataGenerator.Aes128Wrap);
MemoryStream bOut = new MemoryStream();
Stream outStr = edGen.Open(bOut, CmsEnvelopedDataGenerator.Aes128Cbc);
outStr.Write(data, 0, data.Length);
outStr.Close();
CmsEnvelopedDataParser ep = new CmsEnvelopedDataParser(bOut.ToArray());
RecipientInformationStore recipients = ep.GetRecipientInfos();
Assert.AreEqual(ep.EncryptionAlgOid, CmsEnvelopedDataGenerator.Aes128Cbc);
RecipientID recSel = new RecipientID();
// recSel.SetIssuer(PrincipalUtilities.GetIssuerX509Principal(ReciECCert).GetEncoded());
recSel.Issuer = PrincipalUtilities.GetIssuerX509Principal(ReciECCert);
recSel.SerialNumber = ReciECCert.SerialNumber;
RecipientInformation recipient = recipients.GetFirstRecipient(recSel);
CmsTypedStream recData = recipient.GetContentStream(ReciECKP.Private);
Assert.IsTrue(Arrays.AreEqual(data, CmsTestUtil.StreamToByteArray(recData.ContentStream)));
ep.Close();
}
public void TestKeyTransAes128Throughput()
{
byte[] data = new byte[40001];
for (int i = 0; i != data.Length; i++)
{
data[i] = (byte)(i & 0xff);
}
//
// buffered
//
CmsEnvelopedDataStreamGenerator edGen = new CmsEnvelopedDataStreamGenerator();
edGen.SetBufferSize(BufferSize);
edGen.AddKeyTransRecipient(ReciCert);
MemoryStream bOut = new MemoryStream();
Stream outStream = edGen.Open(bOut, CmsEnvelopedDataGenerator.Aes128Cbc);
for (int i = 0; i != data.Length; i++)
{
outStream.WriteByte(data[i]);
}
outStream.Close();
CmsEnvelopedDataParser ep = new CmsEnvelopedDataParser(bOut.ToArray());
RecipientInformationStore recipients = ep.GetRecipientInfos();
ICollection c = recipients.GetRecipients();
IEnumerator e = c.GetEnumerator();
if (e.MoveNext())
{
RecipientInformation recipient = (RecipientInformation)e.Current;
Assert.AreEqual(recipient.KeyEncryptionAlgOid, PkcsObjectIdentifiers.RsaEncryption.Id);
CmsTypedStream recData = recipient.GetContentStream(ReciKP.Private);
Stream dataStream = recData.ContentStream;
MemoryStream dataOut = new MemoryStream();
int len;
byte[] buf = new byte[BufferSize];
int count = 0;
while (count != 10 && (len = dataStream.Read(buf, 0, buf.Length)) > 0)
{
Assert.AreEqual(buf.Length, len);
dataOut.Write(buf, 0, buf.Length);
count++;
}
len = dataStream.Read(buf, 0, buf.Length);
dataOut.Write(buf, 0, len);
Assert.IsTrue(Arrays.AreEqual(data, dataOut.ToArray()));
}
else
{
Assert.Fail("recipient not found.");
}
}
