Clean up and modernize librandom.

 Correct random number generation has historically been
suprisingly painful to achieve. There was no standard,
every system behaved in a subtly different way, and there
were a few userland initiatives to get decent randomness,
all incompatible of course.
 The situation is a bit better now, we're heading towards
some standardization. The arc4random() series of functions
is a good API, and available on a lot of systems -
unfortunately not Linux, but on Linux the new getrandom()
makes using /dev/random obsolete.

 So I removed the old crap in librandom, dropped EGD support,
dropped dynamic backend selection, made a single API series
(random_* instead of goodrandom_* and badrandom_*), added
an arc4random backend and a getrandom backend, and defaulted
to /dev/urandom backed up by SURF in the worst case. This
should be much smaller and logical. However, it's a major
API break, so the skarnet.org stack will be changed to
adapt.

1 files changed, 0 insertions, 35 deletions

diff --git a/src/librandom/surf_makeseed.c b/src/librandom/surf_makeseed.c
deleted file mode 100644
index adae9a4..0000000
--- a/src/librandom/surf_makeseed.c
+++ /dev/null
@@ -1,35 +0,0 @@
-/* ISC license. */
-
-#include <unistd.h>
-#include <skalibs/uint32.h>
-#include <skalibs/tai.h>
-#include <skalibs/sha1.h>
-#include <skalibs/surf.h>
-
-void surf_makeseed (char *s)
-{
-  SHA1Schedule bak = SHA1_INIT() ;
-  {
-    tain_t now ;
-    char tmp[20 + TAIN_PACK] ;
-    uint32 x = getpid() ;
-    uint32_pack(tmp, x) ;
-    x = getppid() ;
-    uint32_pack(tmp + 4, x) ;
-    tain_now(&now) ;
-    tain_pack(tmp + 8, &now) ;
-    sha1_update(&bak, tmp, 8 + TAIN_PACK) ;
-    sha1_final(&bak, tmp) ;
-    sha1_init(&bak) ;
-    sha1_update(&bak, tmp, 20) ;
-  }  
-  {
-    char i = 0 ;
-    for (; i < 8 ; i++)
-    {
-      SHA1Schedule ctx = bak ;
-      sha1_update(&ctx, &i, 1) ;
-      sha1_final(&ctx, s + 20*i) ;
-    }
-  }
-}