// Copyright 2019 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// TODO(fxb/39732): This should be read as "library zx".
library zz;

[Transport = "Syscall"]
protocol cprng {
    [internal]
    cprng_draw_once() -> (status status, vector_void buffer);

    /// Draw from the kernel's CPRNG.
    [vdsocall]
    cprng_draw() -> (vector_void buffer);

    /// Add entropy to the kernel CPRNG.
    cprng_add_entropy(vector_void buffer) -> (status status);
};