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