Re: Announcing crypto suspend

[Pavel Machek <pavel@ucw.cz>]

On Út 21-03-06 10:45:40, Andreas Jellinghaus wrote:
> Rafael J. Wysocki wrote:
> > First, you need to generate the RSA key pair using suspend-keygen and save
> > the output file as /etc/suspend.key (or something else pointed to by
> > the "RSA key file =" configuration parameter of suspend).  This file
> > contains the public modulus (n), public exponent (e) and
> > Blowfish-encrypted private exponent (d) of the RSA key pair.
> > 
> > Then, the suspend utility will load the contents of this file,  generate a
> > random session key (k) and initialization vector (i) for the image
> > encryption and use (n, e) to encrypt these values with RSA.  The encrypted
> > k, i as well as the contents of the RSA key file will be saved in the
> > image header.
> > 
> > The resume utility will read n, e and (encrypted) d as well as (encrypted)
> > k, i from the image header.  Then it will ask the user for a passphrase
> > and will try to decrypt d using it.  Next, it will use (n, e, d) to
> > decrypt k, i needed for decrypting the image.
> 
> what interface will those tools use? can I replace them with my own
> code, e.g. that uses smart cards instead of an encrypted public key
> on a disk?

It is userspace, so yes, you can use smart cards if you hack code at
suspend.sf.net a bit.
								Pavel
-- 
Picture of sleeping (Linux) penguin wanted...
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