Mirror of BoringSSL (grpc依赖)
https://boringssl.googlesource.com/boringssl
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73 lines
2.6 KiB
73 lines
2.6 KiB
/* 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) && !defined(BORINGSSL_UNSAFE_DETERMINISTIC_MODE) |
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#include <limits.h> |
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#include <stdlib.h> |
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OPENSSL_MSVC_PRAGMA(warning(push, 3)) |
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#include <windows.h> |
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#if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP) && \ |
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!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) |
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#include <bcrypt.h> |
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OPENSSL_MSVC_PRAGMA(comment(lib, "bcrypt.lib")) |
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#else |
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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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#endif // WINAPI_PARTITION_APP && !WINAPI_PARTITION_DESKTOP |
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OPENSSL_MSVC_PRAGMA(warning(pop)) |
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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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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 = (ULONG)requested; |
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} |
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// On non-UWP configurations, use RtlGenRandom instead of BCryptGenRandom |
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// to avoid accessing resources that may be unavailable inside the |
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// Chromium sandbox. See https://crbug.com/boringssl/307 |
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#if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP) && \ |
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!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) |
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if (!BCRYPT_SUCCESS(BCryptGenRandom( |
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/*hAlgorithm=*/NULL, out, output_bytes_this_pass, |
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BCRYPT_USE_SYSTEM_PREFERRED_RNG))) { |
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#else |
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if (RtlGenRandom(out, output_bytes_this_pass) == FALSE) { |
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#endif // WINAPI_PARTITION_APP && !WINAPI_PARTITION_DESKTOP |
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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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return; |
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} |
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void CRYPTO_sysrand_for_seed(uint8_t *out, size_t requested) { |
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CRYPTO_sysrand(out, requested); |
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} |
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#endif // OPENSSL_WINDOWS && !BORINGSSL_UNSAFE_DETERMINISTIC_MODE
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