public void WriteTest2()
{
var key = new byte[] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
var content = new byte[] { 0x66, 0xe9, 0x4b, 0xd4, 0xef, 0x8a, 0x2c, 0x3b, 0x88, 0x4c, 0xfa, 0x59, 0xca, 0x34, 0x2b, 0x2e };
var expected = new byte[] { 0x04, 0x10, 0xbe, 0xfc, 0xcd, 0xe6, 0x94, 0x4b, 0x69, 0xdd, 0x00, 0x7d, 0xeb, 0xe3, 0x9a, 0x9d,
0x3a, 0xb6, 0x07, 0x36, 0xf9, 0xcd, 0x20, 0xa2, 0xcf, 0xe1, 0xf2, 0x48, 0x34, 0xb6, 0x25, 0x3d };
var ms = new MemoryStream();
ms.Write(content, 0, content.Length);
ms.Position = 0;
var ecb = new EcbStream(ms, key);
ecb.Position = 15;
ecb.Write(new byte[] { 0x11, 0x11 }, 0, 2);
var actualLength = ecb.Length;
ecb.Flush();
var flushedLength = ecb.Length;
Assert.IsTrue(ms.ToArray().SequenceEqual(expected));
Assert.AreEqual(32, ecb.Length);
Assert.AreEqual(17, actualLength);
Assert.AreEqual(32, flushedLength);
Assert.AreEqual(0, ms.Position);
}
public void WriteTest3()
{
var key = new byte[] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
var content = new byte[] { 0x66, 0xe9, 0x4b, 0xd4, 0xef, 0x8a, 0x2c, 0x3b, 0x88, 0x4c, 0xfa, 0x59, 0xca, 0x34, 0x2b, 0x2e };
var expected = new byte[] { 0x66, 0xe9, 0x4b, 0xd4, 0xef, 0x8a, 0x2c, 0x3b, 0x88, 0x4c, 0xfa, 0x59, 0xca, 0x34, 0x2b, 0x2e,
0x4c, 0x02, 0x1d, 0x6d, 0xf5, 0x51, 0xd7, 0xf8, 0x74, 0xa4, 0xe0, 0x30, 0x8f, 0x4c, 0xb6, 0x13 };
var ms = new MemoryStream();
ms.Write(content, 0, content.Length);
ms.Position = 0;
var ecb = new EcbStream(ms, key);
ecb.Position = 17;
ecb.Write(new byte[] { 0x11, 0x11 }, 0, 2);
var actualLength = ecb.Length;
ecb.Flush();
var flushedLength = ecb.Length;
Assert.IsTrue(ms.ToArray().SequenceEqual(expected));
Assert.AreEqual(32, ecb.Length);
Assert.AreEqual(19, actualLength);
Assert.AreEqual(32, flushedLength);
Assert.AreEqual(0, ms.Position);
}
private Task <bool> DoCipher(Stream input, Stream output, IProgress <ProgressReport> progress, bool decrypt)
{
var requestId = Guid.NewGuid().ToString("N");
var key = OnRequestKey("AES256 ECB Key", 32, requestId, out var error);
if (key == null)
{
return(Task.Factory.StartNew(() =>
{
progress.Report(new ProgressReport {
Percentage = 0, Message = error
});
return false;
}));
}
return(Task.Factory.StartNew(() =>
{
progress.Report(new ProgressReport {
Percentage = 0, Message = decrypt ? "Decryption..." : "Encryption..."
});
using (var ecb = new EcbStream(decrypt ? input : output, key))
{
var buffer = new byte[0x10000];
var totalLength = decrypt ? ecb.Length : input.Length;
while (ecb.Position < totalLength)
{
var length = (int)Math.Min(0x10000, totalLength - ecb.Position);
if (decrypt)
{
ecb.Read(buffer, 0, length);
output.Write(buffer, 0, length);
}
else
{
input.Read(buffer, 0, length);
ecb.Write(buffer, 0, length);
}
progress.Report(new ProgressReport {
Percentage = (double)ecb.Position / totalLength * 100, Message = decrypt ? "Decryption..." : "Encryption...",
});
}
}
progress.Report(new ProgressReport {
Percentage = 100, Message = decrypt ? "Decryption finished." : "Encryption finished."
});
return true;
}));
}
public void WriteTest1()
{
var key = new byte[] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
var content = new byte[] { 0x66, 0xe9, 0x4b, 0xd4, 0xef, 0x8a, 0x2c, 0x3b, 0x88, 0x4c, 0xfa, 0x59, 0xca, 0x34, 0x2b, 0x2e };
var expected = new byte[] { 0x40, 0x15, 0xaf, 0xf5, 0x6f, 0xb5, 0xb9, 0x20, 0xc9, 0x55, 0x44, 0x90, 0x35, 0xda, 0xa7, 0x41 };
var ms = new MemoryStream(content);
var ecb = new EcbStream(ms, key);
ecb.Position = 3;
ecb.Write(new byte[] { 0x11, 0x11 }, 0, 2);
ecb.Flush();
Assert.IsTrue(ms.ToArray().SequenceEqual(expected));
Assert.AreEqual(5, ecb.Position);
Assert.AreEqual(0, ms.Position);
}
