6ff2ba80b7
This version doesn't have short reads. We'll eventually rename the syscall back to zx_cprng_draw once all the clients have migrated to the new semantics. Change-Id: I7a7f6751e4d85dcc9b0a03a533dd93f3cbee277f Reviewed-on: https://boringssl-review.googlesource.com/29084 Commit-Queue: David Benjamin <davidben@google.com> Reviewed-by: David Benjamin <davidben@google.com> CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
42 lines
1.5 KiB
C
42 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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zx_status_t status = zx_cprng_draw_new(out, output_bytes_this_pass);
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if (status != ZX_OK) {
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abort();
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}
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requested -= output_bytes_this_pass;
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out += output_bytes_this_pass;
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}
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}
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#endif // OPENSSL_FUCHSIA && !BORINGSSL_UNSAFE_DETERMINISTIC_MODE
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