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- /* Copyright (c) 2014, 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_WINDOWS) && !defined(BORINGSSL_UNSAFE_DETERMINISTIC_MODE)
-
- #include <limits.h>
- #include <stdlib.h>
-
- OPENSSL_MSVC_PRAGMA(warning(push, 3))
-
- #include <windows.h>
-
- // #define needed to link in RtlGenRandom(), a.k.a. SystemFunction036. See the
- // "Community Additions" comment on MSDN here:
- // http://msdn.microsoft.com/en-us/library/windows/desktop/aa387694.aspx
- #define SystemFunction036 NTAPI SystemFunction036
- #include <ntsecapi.h>
- #undef SystemFunction036
-
- OPENSSL_MSVC_PRAGMA(warning(pop))
-
- #include "../fipsmodule/rand/internal.h"
-
-
- void CRYPTO_sysrand(uint8_t *out, size_t requested) {
- while (requested > 0) {
- ULONG output_bytes_this_pass = ULONG_MAX;
- if (requested < output_bytes_this_pass) {
- output_bytes_this_pass = (ULONG)requested;
- }
- if (RtlGenRandom(out, output_bytes_this_pass) == FALSE) {
- abort();
- }
- requested -= output_bytes_this_pass;
- out += output_bytes_this_pass;
- }
- return;
- }
-
- #endif // OPENSSL_WINDOWS && !BORINGSSL_UNSAFE_DETERMINISTIC_MODE
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