| // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| #include "platform/globals.h" |
| #if defined(DART_HOST_OS_WINDOWS) |
| |
| #include <bcrypt.h> |
| #include "bin/crypto.h" |
| |
| namespace dart { |
| namespace bin { |
| |
| // see https://docs.microsoft.com/en-us/windows/win32/api/bcrypt/nf-bcrypt-bcryptgenrandom |
| #ifndef NT_SUCCESS |
| #define NT_SUCCESS(Status) ((NTSTATUS)(Status) >= 0) |
| #endif |
| |
| bool Crypto::GetRandomBytes(intptr_t count, uint8_t* buffer) { |
| if (count <= 0) { |
| return true; |
| } |
| return NT_SUCCESS(BCryptGenRandom(/*hAlgorithm=*/nullptr, buffer, |
| (ULONG)count, |
| BCRYPT_USE_SYSTEM_PREFERRED_RNG)); |
| } |
| |
| } // namespace bin |
| } // namespace dart |
| |
| #endif // defined(DART_HOST_OS_WINDOWS) |
