On 11/09/12 18:17, Anil wrote: > Suppose I have a library of various crypto algorithms. It is proprietary. > I build it as a module and want the user to run dm-crypt specifying my module to be run. > For example, > crypt FooCryptoLibrary-aes-xts > I read that if your module is not GPL, then one cannot access core functions. > Will there be a problem here? > > > ________________________________ > From: Arno Wagner <arno@xxxxxxxxxxx> > To: dm-crypt@xxxxxxxx > Sent: Wednesday, September 5, 2012 7:41 AM > Subject: Re: newbie qs on dm-crypt > > On Tue, Sep 04, 2012 at 02:14:09PM -0700, Anil wrote: >> Thanks for replying. >> You said, >> "Ciphers and modes are the job of the kernel, not dm-crypt." > >> >> I am trying to understand if?proprietary software can be used with >> dm-crypt. >> > > That depends. > >> I read it is in GPL mode. Which version? GPL v2, v3, LGPL...? >> >> For example, there is some in-house proprietary developed code for >> AES-XTS. >> >> If I understood your reply correctly, then dm-crypt will call these >> functions loaded into the kernel and there will not be any problem as the >> GPL code (dm-crypt) will not be linked with the proprietary code. Is that >> so?? > > No. Kernels are different. If you do not distribute, it does not > matter anyways. If you distribute, and want your stuff to stay > closed, you should probably talk to an IP lawyer. > > I have to say though that there is pobably no point, as AES-XTS is > open and the kernel implementation is probably better than yours > anyways. > > Arno > > > >> >> >> >> ________________________________ >> From: Arno Wagner <arno@xxxxxxxxxxx> >> To: dm-crypt@xxxxxxxx >> Sent: Monday, September 3, 2012 8:29 PM >> Subject: Re: (no subject) >> >> On Mon, Sep 03, 2012 at 06:20:35PM -0700, Anil wrote: >>> Newbie here. I need to use dm-crypt with aes-xts. How is dm-crypt called? >> >> Refer to the man-page and the FAQ. >> >>> Is it possible to encrypt data while being saved on the fly? >> >> That is its job. It is not possible to do it in any other way. >> >>> Will there be file filters to encrypt/decrypt while saving >>> and opening the file? >> >> No. >> >>> Is aes-xts provided elsewhere as a plugin? or is it part of dmcrypt? >> >> Ciphers and modes are the job of the kernel, not dm-crypt. >> It just uses them. >> >> Arno >> -- >> Arno Wagner,? ? Dr. sc. techn., Dipl. Inform.,? Email: arno@xxxxxxxxxxx >> GnuPG:? ID: 1E25338F? FP: 0C30 5782 9D93 F785 E79C? 0296 797F 6B50 1E25 338F >> ---- >> One of the painful things about our time is that those who feel certainty >> are stupid, and those with any imagination and understanding are filled >> with doubt and indecision. -- Bertrand Russell >> _______________________________________________ >> dm-crypt mailing list >> dm-crypt@xxxxxxxx >> http://www.saout.de/mailman/listinfo/dm-crypt > >> _______________________________________________ >> dm-crypt mailing list >> dm-crypt@xxxxxxxx >> http://www.saout.de/mailman/listinfo/dm-crypt > > > > > _______________________________________________ > dm-crypt mailing list > dm-crypt@xxxxxxxx > http://www.saout.de/mailman/listinfo/dm-crypt If your module is not gpl I think you will not be able to use with gpl-only-symbols unless you change this. However I think you shall do this question in the kernel mailing list (dm-crypt is a userland tool). I doubt if its legal that you modify a EXPORT_SYMBOL_GPL to a EXPORT_SYMBOL one, for me is something like change the licence. I'm not and expert is this question thought, but I think you shall ask this too there. _______________________________________________ dm-crypt mailing list dm-crypt@xxxxxxxx http://www.saout.de/mailman/listinfo/dm-crypt
