1 files changed, 12 insertions, 0 deletions
diff --git a/xorg-server/os/auth.c b/xorg-server/os/auth.c
index 5fcb538c4..df05a5717 100644
--- a/xorg-server/os/auth.c
+++ b/xorg-server/os/auth.c
@@ -303,11 +303,23 @@ GenerateAuthorization(unsigned name_length,
 void
 GenerateRandomData(int len, char *buf)
 {
+#ifdef _MSC_VER
+    static HANDLE hAdvApi32;
+    static BOOLEAN (_stdcall * RtlGenRandom)(void *,unsigned long);
+
+    if (!hAdvApi32)
+    {
+      hAdvApi32=LoadLibrary("advapi32.dll");
+      RtlGenRandom=(BOOLEAN (_stdcall *)(void*,unsigned long))GetProcAddress(hAdvApi32,"SystemFunction036");
+    }
+    RtlGenRandom(buf, len);
+#else
     int fd;
 
     fd = open("/dev/urandom", O_RDONLY);
     read(fd, buf, len);
     close(fd);
+#endif
 }
 
 #endif                          /* XCSECURITY */