} // func ReadStreamData
private static (string hashName, byte[] hashValue) CopyData(bool shouldDeflate, Stream srcStream, byte[] buf, int readed, Stream dstStream)
{
// pack destination stream
var dst = shouldDeflate
? new GZipStream(dstStream, CompressionMode.Compress, true)
: dstStream;
using (var dstHashStream = new HashStream(dst, HashStreamDirection.Write, false, SHA256.Create()))
{
try
{
// copy stream into file
dstHashStream.Write(buf, 0, readed);
srcStream.CopyTo(dst);
}
finally
{
dstHashStream.Flush();
dstHashStream.Dispose();
}
dstHashStream.Close();
return("SHA2_256", dstHashStream.HashSum);
}
} // func CopyData
public void TestHashStreamWrite()
{
Random r = new Random();
byte[][] test =
new byte[][]
{
new byte[300],
new byte[1],
new byte[500],
new byte[11],
new byte[1],
new byte[1000],
};
using (HashStream hs = new HashStream(new SHA256Managed()))
using (MemoryStream ms = new MemoryStream())
using (HashStream hsWrap = new HashStream(new SHA256Managed(), ms))
{
Assert.IsTrue(hs.CanWrite);
long len = 0;
foreach (byte[] bytes in test)
{
len += bytes.Length;
r.NextBytes(bytes);
hsWrap.Write(bytes, 0, bytes.Length);
hs.Write(bytes, 0, bytes.Length);
}
for (int i = 0; i < 5; i++)
{
len += 1;
byte val = (byte)r.Next(255);
hsWrap.WriteByte(val);
hs.WriteByte(val);
}
Assert.AreEqual(len, ms.Position);
Hash expect = Hash.SHA256(ms.ToArray());
Hash actual = hs.Close();
Assert.AreEqual(expect, actual);
Assert.AreEqual(expect.ToArray(), actual.ToArray());
Assert.AreEqual(expect.ToString(), actual.ToString());
//wrapped test
actual = hsWrap.FinalizeHash();
Assert.AreEqual(expect, actual);
Assert.AreEqual(expect.ToArray(), actual.ToArray());
Assert.AreEqual(expect.ToString(), actual.ToString());
}
}
public void InitiateTaggedWorks()
{
#if HAS_SPAN
var sha = new NBitcoin.Secp256k1.SHA256();
sha.InitializeTagged("lol");
sha.Write(new byte[32]);
byte[] buff = new byte[32];
sha.GetHash(buff);
Assert.Equal("9185788706ad8d475d2410ce07554aeff7a212418159a8fa8ef2b3cb4a883b62", new uint256(buff).ToString());
#endif
HashStream stream = new HashStream();
stream.SingleSHA256 = true;
stream.InitializeTagged("lol");
stream.Write(new byte[32], 0, 32);
var actual = stream.GetHash();
Assert.Equal("9185788706ad8d475d2410ce07554aeff7a212418159a8fa8ef2b3cb4a883b62", actual.ToString());
}
public override void Write(byte[] buffer, int offset, int count)
{
long blockNum = CurrentSector;
int toWrite = (int)Math.Min(count, Length - Position);
byte[] hash = DoHash(buffer, offset, toWrite);
if (Type == IntegrityStreamType.Save && buffer.IsEmpty())
{
Array.Clear(hash, 0, DigestSize);
}
base.Write(buffer, offset, count);
HashStream.Position = blockNum * DigestSize;
HashStream.Write(hash, 0, DigestSize);
}
public unsafe void TestByteArrayAndStream(int length)
{
var array = new byte[length];
var random = new Random(0);
random.NextBytes(array);
var hash = Create();
hash.Write(array, 0, array.Length);
var value = ComputeAndPrint(hash);
var hash1 = Create();
fixed(void *parray = array)
{
hash1.Write(new IntPtr(parray), (ulong)array.Length);
}
var value1 = ComputeAndPrint(hash);
var stream = new MemoryStream();
var hashStream = new HashStream <THash>(stream, Create());
hashStream.Write(array, 0, array.Length);
var valueStreamWrite = ComputeAndPrint(hashStream.Hash);
// Check that backend stream is fine as well
var outputArray = stream.ToArray();
Assert.AreEqual(array, outputArray);
// Reset stream
hashStream.Position = 0;
Reset(ref hashStream.Hash);
var inputArray = new byte[array.Length];
var readCount = hashStream.Read(inputArray, 0, array.Length);
Assert.AreEqual(array.Length, readCount);
var valueStreamRead = ComputeAndPrint(hashStream.Hash);
Assert.AreEqual(value, value1);
Assert.AreEqual(value, valueStreamWrite);
Assert.AreEqual(value, valueStreamRead);
}
