Subject: Re: Importing PaX features to NetBSD
To: Elad Efrat <elad@NetBSD.org>
From: Steven M. Bellovin <smb@cs.columbia.edu>
List: tech-security
Date: 12/18/2005 08:59:34 
In message <43A53622.4080806@NetBSD.org>, Elad Efrat writes:

>
>ASLR calculates 3 random values on execution and saves these as offsets
>to be used when a random value is needed. How expensive are 3
>arc4random() calls in the context of an entire sys_execve()?
>

Where does the random seed come from?

		--Steven M. Bellovin, http://www.cs.columbia.edu/~smb