public static async Task DecryptAsync(Stream encryptedStream, Stream destinationStream, EncryptionKey key)
{
using var decryptor = key.CreateDecryptor(encryptedStream);
using CryptoStream csDecrypt = new(encryptedStream, decryptor, CryptoStreamMode.Read);
await csDecrypt.CopyToAsync(destinationStream).ConfigureAwait(false);
}
public static async Task EncryptAsync(Stream sourceStream, Stream destinationStream, EncryptionKey key)
{
using var encryptor = key.CreateEncryptor(destinationStream);
using CryptoStream csEncrypt = new(destinationStream, encryptor, CryptoStreamMode.Write);
await sourceStream.CopyToAsync(csEncrypt).ConfigureAwait(false);
}