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 static async Task <byte[]> ExtractUserDataFile(string sourcePath, string destinationPath, byte[] key,
byte[] iv)
{
NDirectory.CreateMissingDirs(destinationPath);
await using var src = new FileStream(sourcePath, FileMode.Open, FileAccess.Read);
await using var dest = new FileStream(destinationPath, FileMode.Create, FileAccess.Write);
using var decryptor = QuickAesTransform.CreateDecryptor(key, iv);
await using var srcCrypto = new CryptoStream(src, decryptor, CryptoStreamMode.Read);
var hash = await srcCrypto.CopyToCreateHashAsync(dest);
return(hash);
}