Thread (8 messages) 8 messages, 3 authors, 2014-01-30

Re: [RFC PATCH] char: random: stir the output pools differently when the random_write lenght allows splitting the seed

From: Clemens Ladisch <clemens@ladisch.de>
Date: 2014-01-10 08:24:20
Also in: lkml

Rafael Aquini wrote:
This patch introduces changes to the random_write method so it can split the
given seed and completely stir the output pools with different halves of it,
when seed lenght allows us doing so.

-	ret = write_pool(&blocking_pool, buffer, count);
+	ret = write_pool(pool1, buffer, count1);
 	if (ret)
 		return ret;
-	ret = write_pool(&nonblocking_pool, buffer, count);
+	ret = write_pool(pool2, buffer + offset, count2);
Doesn't this assume that both halves of the buffer contain some
(uncredited) entropy?  In other words, wouldn't this result in worse
randomness for pool2 if the second half of the buffer contains just zero
padding?


Regards,
Clemens
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help