|
- /* Copyright (c) 2017, Google Inc.
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
- * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
- * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
- * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
-
- #include <openssl/rand.h>
-
- #if defined(OPENSSL_FUCHSIA) && !defined(BORINGSSL_UNSAFE_DETERMINISTIC_MODE)
-
- #include <limits.h>
- #include <stdlib.h>
-
- #include <magenta/syscalls.h>
-
- #include "internal.h"
-
- void CRYPTO_sysrand(uint8_t *out, size_t requested) {
- while (requested > 0) {
- size_t output_bytes_this_pass = MX_CPRNG_DRAW_MAX_LEN;
- if (requested < output_bytes_this_pass) {
- output_bytes_this_pass = requested;
- }
- size_t bytes_drawn;
- mx_status_t status =
- mx_cprng_draw(out, output_bytes_this_pass, &bytes_drawn);
- if (status != NO_ERROR) {
- abort();
- }
- requested -= bytes_drawn;
- out += bytes_drawn;
- }
- }
-
- #endif /* OPENSSL_FUCHSIA && !BORINGSSL_UNSAFE_DETERMINISTIC_MODE */
|