Subject: Re: Importing PaX features to NetBSD
To: Elad Efrat <>
From: Steven M. Bellovin <>
List: tech-security
Date: 12/18/2005 08:59:34
In message <>, 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,