Function get_sys_random_bytes

libcppcryptfs/util/util.cpp:419–438

bool
get_sys_random_bytes(unsigned char *buf, DWORD len)
{
	
	HCRYPTPROV hProvider = NULL;

	if (!CryptAcquireContextW(&hProvider, 0, 0, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT | CRYPT_SILENT)) {
		return false;
	}

	if (!CryptGenRandom(hProvider, len, buf)) {
		CryptReleaseContext(hProvider, 0);
		return false;
	}

	CryptReleaseContext(hProvider, 0);

	return true;

}