public void TestKeyTransAes128Buffered()
{
byte[] data = new byte[2000];
for (int i = 0; i != 2000; i++)
{
data[i] = (byte)(i & 0xff);
}
//
// unbuffered
//
CmsEnvelopedDataStreamGenerator edGen = new CmsEnvelopedDataStreamGenerator();
edGen.AddKeyTransRecipient(ReciCert);
MemoryStream bOut = new MemoryStream();
Stream outStream = edGen.Open(
bOut, CmsEnvelopedDataGenerator.Aes128Cbc);
for (int i = 0; i != 2000; i++)
{
outStream.WriteByte(data[i]);
}
outStream.Close();
VerifyData(bOut.ToArray(), CmsEnvelopedDataGenerator.Aes128Cbc, data);
int unbufferedLength = bOut.ToArray().Length;
//
// buffered - less than default of 1000
//
edGen = new CmsEnvelopedDataStreamGenerator();
edGen.SetBufferSize(300);
edGen.AddKeyTransRecipient(ReciCert);
bOut.SetLength(0);
outStream = edGen.Open(bOut, CmsEnvelopedDataGenerator.Aes128Cbc);
for (int i = 0; i != 2000; i++)
{
outStream.WriteByte(data[i]);
}
outStream.Close();
VerifyData(bOut.ToArray(), CmsEnvelopedDataGenerator.Aes128Cbc, data);
Assert.IsTrue(unbufferedLength < bOut.ToArray().Length);
}
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.");
}
}
