dc94b54708
Define WIN32_LEAN_AND_MEAN before including Windows Platform SDK headers to preempt naming conflicts and to make the build faster. Avoid including those headers in BoringSSL headers. Document that Platform SDK 8.1 or later is required on Windows. Change-Id: I907ada21dc722527ea37e839c71c5157455a7003 Reviewed-on: https://boringssl-review.googlesource.com/3100 Reviewed-by: Adam Langley <agl@google.com>
52 lines
1.6 KiB
C
52 lines
1.6 KiB
C
/* Copyright (c) 2014, 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_WINDOWS)
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#define WIN32_LEAN_AND_MEAN
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#include <limits.h>
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#include <stdlib.h>
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#include <Windows.h>
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/* #define needed to link in RtlGenRandom(), a.k.a. SystemFunction036. See the
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* "Community Additions" comment on MSDN here:
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* http://msdn.microsoft.com/en-us/library/windows/desktop/aa387694.aspx */
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#define SystemFunction036 NTAPI SystemFunction036
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#include <NTSecAPI.h>
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#undef SystemFunction036
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void RAND_cleanup(void) {
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}
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int RAND_bytes(uint8_t *out, size_t requested) {
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while (requested > 0) {
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ULONG output_bytes_this_pass = ULONG_MAX;
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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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if (RtlGenRandom(out, output_bytes_this_pass) == FALSE) {
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abort();
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return 0;
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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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return 1;
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}
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#endif /* OPENSSL_WINDOWS */
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