use RtlGenRandom (SystemFunction036) in lcorernd if the system supports it

[lcore.git] / lcorernd.pas

diff --git a/lcorernd.pas b/lcorernd.pas
index 7dbd7f17ec60d99921f153e3e3a77f6c13ccc42c..b76ab4934ffe4c15365f12467442e3d186b2dccb 100644 (file)
--- a/lcorernd.pas
+++ b/lcorernd.pas
@@ -180,14 +180,31 @@ const
   hashpasssize=48; {this number has to be small enough that hashing this size uses only one block transform}\r
 \r
 var\r
-  {the seed part of this buffer must be at least as big as the OS seed (windows: 104 bytes, unix: 36 bytes)}\r
+  {the seed part of this buffer must be at least as big as the OS seed (windows: 120 bytes, unix: 36 bytes)}\r
   pool:array[0..(pooldwords+seeddwords-1)] of wordtype;\r
   reseedcountdown:integer;\r
 \r
 {$ifdef mswindows}\r
+var\r
+  systemfunction036:function(var v; c:cardinal): boolean;  stdcall;\r
+  rtlgenrandominited:boolean;\r
+\r
+procedure initrtlgenrandom;\r
+var\r
+  h:thandle;\r
+begin\r
+  rtlgenrandominited := true;\r
+  systemfunction036 := nil;  \r
+  h := loadlibrary('advapi32.dll');\r
+  if (h <> 0) then begin\r
+    systemfunction036 := GetProcAddress(h,'SystemFunction036');\r
+  end;\r
+end;\r
+\r
 function collect_seeding(var output;const bufsize:integer):integer;\r
 var\r
   l:packed record\r
+    rtlgenrandom:array[0..3] of longint;\r
     guid:array[0..3] of longint;\r
     qpcbuf:array[0..1] of longint;\r
     rdtscbuf:array[0..1] of longint;\r
@@ -221,6 +238,10 @@ begin
   getcursorpos(l.cursor);\r
 \r
   l.hs := getheapstatus;\r
+\r
+  {rtlgenrandom}\r
+  if not rtlgenrandominited then initrtlgenrandom;\r
+  if assigned(@systemfunction036) then systemfunction036(l.rtlgenrandom,sizeof(l.rtlgenrandom));\r
 end;\r
 {$endif}\r
 \r