Re: Facebook Image Privacy

[Valdis.Kletnieks () vt edu]

On Mon, 18 Jan 2010 23:12:17 +0100, Dan Kaminsky said:

> I can quantify this with the rate of change of complexity of a system.

Well, if you're talking *rate* of change...

>  If you add one kilobyte of complexity to Windows (consuming literally
> 8192 bits extra space on the DVD), you have not done much to the
> difficulty of breaking Windows.  If you add one kilobyte of complexity
> to an RSA key (literally, adding another 4096 bits to p and q
> respectively), you most assuredly have done much to to the difficulty
> of breaking this particular RSA key.

Adding 8K to the acres of bits of already on the DVD is proportionally smaller
than adding even 1 bit to a 4096-bit RSA key.

And I'll submit the notion that if it's the *right* 8192 bits, it can add
immensely to the difficulty.  I'd have to go back and check, but the stack
address randomization bits added to the Linux kernel were actually quite
tiny, but added a lot to the difficulty.

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