[openfirmware] [commit] r3446 - cpu/x86/pc/olpc

repository service svn at openfirmware.info
Wed Nov 21 00:10:28 CET 2012


Author: wmb
Date: Wed Nov 21 00:10:28 2012
New Revision: 3446
URL: http://tracker.coreboot.org/trac/openfirmware/changeset/3446

Log:
oatstime utility - simplified the fix in svn 3445 by observing that running one step of a linear congruence adds no entropy to the seed value, thus you might as well just use the seed.

Modified:
   cpu/x86/pc/olpc/oatstime.fth

Modified: cpu/x86/pc/olpc/oatstime.fth
==============================================================================
--- cpu/x86/pc/olpc/oatstime.fth	Tue Nov 20 23:54:29 2012	(r3445)
+++ cpu/x86/pc/olpc/oatstime.fth	Wed Nov 21 00:10:28 2012	(r3446)
@@ -316,14 +316,16 @@
    http-write
    " flush-writes" $call-http
 ;
-[ifndef] random-long
-variable rn
-: random-long  rn @  d# 1103515245 *  d# 12345 +   h# 7FFFFFFF and  dup rn !  ;
-time&date >unix-seconds get-msecs xor rn !
+
+[ifdef] random
+alias nonce-int random-long
+[else]
+: nonce-int  ( -- n )  time&date >unix-seconds get-msecs xor  ;
 [then]
+
 0 value the-nonce
 : oats-msg$  ( -- msg$ )
-   random-long abs  dup to the-nonce   ( nonce )
+   nonce-int abs  dup to the-nonce   ( nonce )
    " SN" find-tag 0= abort" Machine has no serial number" ?-null  ( nonce sn$ )
    " serialnum=%s&version=1&nonce=%d" sprintf
 ;



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