namespace System.Security.Cryptography
{
    [SupportedOSPlatform("ios13.0")]
    [SupportedOSPlatform("tvos13.0")]
    [UnsupportedOSPlatform("browser")]
    [UnsupportedOSPlatform("ios")]
    [UnsupportedOSPlatform("tvos")]
    public sealed class ChaCha20Poly1305 : IDisposable
    {
        public void Encrypt(ReadOnlySpan<byte> nonce, ReadOnlySpan<byte> plaintext, Span<byte> ciphertext, Span<byte> tag, ReadOnlySpan<byte> associatedData = default);
    }
}