public async Task ShouldDecrypt()
{
var provider = new EncryptionProvider();
var array = Encoding.ASCII.GetBytes("This is a test");
var encrypted = await AsArray(provider.EncryptBlock(array)).ConfigureAwait(false);
var decrypted = await AsArray(provider.DecryptBlock(encrypted)).ConfigureAwait(false);
Assert.Equal(array.ToList(), decrypted);
Assert.Equal(Encoding.ASCII.GetString(decrypted), "This is a test");
}