+#include <windows.h>
+#include <wincrypt.h>
+
+#ifndef PROV_INTEL_SEC
+#define PROV_INTEL_SEC 22
+#endif
+#ifndef CRYPT_VERIFY_CONTEXT
+#define CRYPT_VERIFY_CONTEXT 0xF0000000
+#endif
+
+MonoBoolean
+ves_icall_System_Security_Cryptography_RNGCryptoServiceProvider_RngOpen (void)
+{
+ /* FALSE == Local (instance) handle for randomness */
+ return FALSE;
+}