From 6b5634b96aa90ab2db7357b353fc8f96ad4878c5 Mon Sep 17 00:00:00 2001 From: Fabio Alessandrelli Date: Mon, 7 Feb 2022 17:33:55 +0100 Subject: [OS/Crypto] Add get_entropy to OS. Implemented via `BCryptGenRandom` on Windows. Implemented via `getentropy` syscall when available. Implemented via `/dev/urandom` device as a fallback. The `/dev/urandom` fallback can be disabled via the `NO_URANDOM` build flag. Note: The HTML5 version relies on emscripten file system urandom device which itself uses the Crypto API when available or the plain old not crypto-safe `Math.random()` otherwise. Restore get_entropy. --- platform/windows/os_windows.cpp | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'platform/windows/os_windows.cpp') diff --git a/platform/windows/os_windows.cpp b/platform/windows/os_windows.cpp index d844531071..59f55b5dd2 100644 --- a/platform/windows/os_windows.cpp +++ b/platform/windows/os_windows.cpp @@ -46,6 +46,7 @@ #include "windows_terminal_logger.h" #include +#include #include #include #include @@ -192,6 +193,12 @@ void OS_Windows::finalize_core() { NetSocketPosix::cleanup(); } +Error OS_Windows::get_entropy(uint8_t *r_buffer, int p_bytes) { + NTSTATUS status = BCryptGenRandom(nullptr, r_buffer, p_bytes, BCRYPT_USE_SYSTEM_PREFERRED_RNG); + ERR_FAIL_COND_V(status, FAILED); + return OK; +} + Error OS_Windows::open_dynamic_library(const String p_path, void *&p_library_handle, bool p_also_set_library_path) { String path = p_path.replace("/", "\\"); -- cgit v1.2.3