Steven Valdez | b0b45c6 | 2017-01-17 16:23:54 -0500 | [diff] [blame^] | 1 | /* Copyright (c) 2017, Google Inc. |
| 2 | * |
| 3 | * Permission to use, copy, modify, and/or distribute this software for any |
| 4 | * purpose with or without fee is hereby granted, provided that the above |
| 5 | * copyright notice and this permission notice appear in all copies. |
| 6 | * |
| 7 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 8 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 9 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| 10 | * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 11 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
| 12 | * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| 13 | * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ |
| 14 | |
| 15 | #include <openssl/rand.h> |
| 16 | |
| 17 | #if defined(OPENSSL_FUCHSIA) && !defined(BORINGSSL_UNSAFE_DETERMINISTIC_MODE) |
| 18 | |
| 19 | #include <limits.h> |
| 20 | #include <stdlib.h> |
| 21 | |
| 22 | #include <magenta/syscalls.h> |
| 23 | |
| 24 | #include "internal.h" |
| 25 | |
| 26 | void CRYPTO_sysrand(uint8_t *out, size_t requested) { |
| 27 | while (requested > 0) { |
| 28 | size_t output_bytes_this_pass = MX_CPRNG_DRAW_MAX_LEN; |
| 29 | if (requested < output_bytes_this_pass) { |
| 30 | output_bytes_this_pass = requested; |
| 31 | } |
| 32 | size_t bytes_drawn; |
| 33 | mx_status_t status = |
| 34 | mx_cprng_draw(out, output_bytes_this_pass, &bytes_drawn); |
| 35 | if (status != NO_ERROR) { |
| 36 | abort(); |
| 37 | } |
| 38 | requested -= bytes_drawn; |
| 39 | out += bytes_drawn; |
| 40 | } |
| 41 | } |
| 42 | |
| 43 | #endif /* OPENSSL_FUCHSIA && !BORINGSSL_UNSAFE_DETERMINISTIC_MODE */ |