Re: [SC-L] Best practices for encrypting client-side data

2007-05-10 Thread Robin Sheat
On Wednesday 09 May 2007 03:00:12 SC-L Subscriber Dave Aronson wrote: What happens when the user changes his password?  I didn't quite follow it all, but it looks to me like that means that all of a user's data has to be decrypted and re-encrypted.  You didn't tell us how much data that is, so

Re: [SC-L] Best practices for encrypting client-side data

2007-05-10 Thread Robin Sheat
On Wednesday 09 May 2007 05:04:53 you wrote: You go on to describe (I think) crypto operations that take place completely on the client site. What is the relationship between the encrypted data and server client-server communications? For the purposes of this, there isn't. It was just to

Re: [SC-L] Best practices for encrypting client-side data

2007-05-10 Thread Robin Sheat
On Wednesday 09 May 2007 02:11:05 ljknews wrote: I would suggest two factor authentication, requiring some smart card (with built-in keypad, to prevent intercept of the pin) that actually provides the decryption.  Make the user keep the smart card with them, such as by requiring it for

Re: [SC-L] Best practices for encrypting client-side data

2007-05-10 Thread ljknews
At 12:01 PM +1200 5/10/07, Robin Sheat wrote: Content-Type: multipart/signed; boundary=nextPart1622971.NJ1973Q3ia; protocol=application/pgp-signature; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit On Wednesday 09 May 2007 02:11:05 ljknews wrote: I would suggest two factor