public void TestReadHeaderUshort()
{
StreamTester st = CreateStreamTester(0x50, "BA AD F0 0D 00", unchecked ((int)0x96C66829));
st.RollForward(0x0004, 0x03FF);
Biff8DecryptingStream bds = st.GetBDS();
int hval = bds.ReadDataSize(); // unencrypted
int nextInt = bds.ReadInt();
if (nextInt == unchecked ((int)0x8F534029))
{
throw new AssertionException(
"Indentified bug in key alignment After call to ReadHeaderUshort()");
}
Assert.AreEqual(0x16885243, nextInt);
if (hval == 0x283E)
{
throw new AssertionException("readHeaderUshort() incorrectly decrypted result");
}
Assert.AreEqual(0x504F, hval);
// confirm next key change
st.RollForward(0x0405, 0x07FC);
st.ConfirmInt(0x76CC1223);
st.ConfirmInt(0x4842D83E);
st.AssertNoErrors();
}
/**
* @param expectedFirstInt expected value of the first int read from the decrypted stream
*/
public StreamTester(MockStream ms, String keyDigestHex, int expectedFirstInt)
{
_ms = ms;
byte[] keyDigest = HexRead.ReadFromString(keyDigestHex);
_bds = new Biff8DecryptingStream(_ms, 0, new Biff8EncryptionKey(keyDigest));
Assert.AreEqual(expectedFirstInt, _bds.ReadInt());
_errorsOccurred = false;
}
public RecordInputStream(Stream in1, Biff8EncryptionKey key, int initialOffset)
{
if (key == null)
{
_dataInput = SimpleHeaderInput.GetLEI(in1);
_bhi = new SimpleHeaderInput(in1);
}
else
{
Biff8DecryptingStream bds = new Biff8DecryptingStream(in1, initialOffset, key);
_bhi = bds;
_dataInput = bds;
}
_nextSid = ReadNextSid();
}
public RecordInputStream(Stream in1, Biff8EncryptionKey key, int initialOffset)
{
if (key == null)
{
_dataInput = SimpleHeaderInput.GetLEI(in1);
_bhi = new SimpleHeaderInput(in1);
}
else
{
Biff8DecryptingStream bds = new Biff8DecryptingStream(in1, initialOffset, key);
_bhi = bds;
_dataInput = bds;
}
_nextSid = ReadNextSid();
}
