Messages in this thread | | | Date | Tue, 27 Dec 2005 14:48:21 -0400 | From | Carlos Aguiar <> | Subject | Re: [patch 0/5] Add MMC password protection (lock/unlock) support |
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Anderson Lizardo wrote:
>On 12/13/05, David Brownell <david-b@pacbell.net> wrote: > > >>Is there a writeup on how to hook this up with the key retention >>infrastructure? I know many folk are unfamiliar with that, and >>I seem to recall a need for some userspace tweaks. (Like SHA1 >>hashing of passphrases to generate MMC keys, and maybe storing >>keys in some per-user file using some user interface.) >> >> > >We have created a sample text-mode reference UI (using keyctl from the >keyutils[1] package to interface with the key retention service) that >shows how everything works together. We are setting up some web space >to put such UI (actually a set of shell scripts) and we will provide >links soon. > >Regarding the userspace tweaks, we have not gone into this aspect, but >just provided the "core" kernel code. Usually, those integrating the >system will dictate policies regarding password hashing, persistent >caching etc. The policies for our reference UI were: > >- no hashing (password is sent/stored clear-text) >- in-memory caching (so if the user reboots the system, the password >will have to be re-typed). > >I think those policies can be done still on userspace, so the kernel >code remains "policy-free". > >[1] http://people.redhat.com/~dhowells/keyutils/ >-- >Anderson Lizardo >Embedded Linux Lab - 10LE >Nokia Institute of Technology - INdT >Manaus - Brazil > > > Hi all,
As promised, you can find a simple text-mode reference UI for the MMC password protection support, written in shell script, that shows how everything works together on the links below:
http://www.indt.org.br/10le/mmc_pwd/mmc_reference_ui-20051215.tar.gz http://www.indt.org.br/10le/mmc_pwd/mmc_test-20051215.sh
BR,
Carlos Aguiar.
-- Carlos Eduardo Software Engineer Nokia Institute of Technology - INdT Embedded Linux Laboratory - 10LE Phone: +55 92 2126-1079 Mobile: +55 92 8127-1797 E-mail: carlos.aguiar@indt.org.br
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