| // 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) |