public static async Task <byte[]> WriteUserDataFileAsync(string sourcePath, string destinationPath, byte[] key,
byte[] iv)
{
await using var src = new FileStream(sourcePath, FileMode.Open, FileAccess.Read);
await using var dest = new FileStream(destinationPath, FileMode.Create, FileAccess.Write);
using var encryptor = QuickAesTransform.CreateEncryptor(key, iv);
await using var destCrypto = new CryptoStream(dest, encryptor, CryptoStreamMode.Write);
var hash = await src.CopyToCreateHashAsync(destCrypto);
return(hash);
}
public async Task HashIsCorrect()
{
var timer = Stopwatch.StartNew();
await using var sourceStream = new FileStream(TestFile, FileMode.Open, FileAccess.Read);
await using var outputStream = new FileStream("HashIsCorrect.td", FileMode.Create, FileAccess.Write);
using var sha = SHA256.Create();
var hashFromCompute = sha.ComputeHash(sourceStream);
sourceStream.Position = 0;
var hashFromCopy = await sourceStream.CopyToCreateHashAsync(outputStream);
Console.WriteLine(timer.ElapsedMilliseconds + "ms");
Assert.AreEqual(hashFromCompute, hashFromCopy);
}
