Stavros Kousidis wrote: >> BTW anyone know what had happened with EME2 wide mode? >> [snip long link] > > As far as I know there are intellectual-property issues: > > P. Rogaway, Block cipher mode of operation for constructing a > wide-blocksize block cipher from a conventional block cipher, US Patent > Application 20040131182 A1 _______________________________________________ > dm-crypt mailing list dm-crypt@xxxxxxxx > http://www.saout.de/mailman/listinfo/dm-crypt Hey, this caught my attention so I contacted Dr. Rogaway. Included below is the email conversation (my apologies for the format, he replied at the top so I followed suit): ======= > Cool, thank you. It seems there was some misinformation in that thread then, > so would you mind if I quoted your response? Go right ahead. Best wishes, Phil Rogaway > On Friday, February 08, 2013 09:34:14 AM you wrote: >> Hi Alex, >> >> There is no Rogaway or UC patent related to EME2. >> The University of California did do a patent application, >> but abandoned it (that is, decided not to pursue a utility patent). >> I had to look up some old correspondence to remind myself of this, >> but it seems that we informed Matt Ball and Jim Hughes back in Nov 2007 >> that there'd be no patent, filling out some IEEE patent-disclosure >> form saying this, too. >> >> Best wishes, >> phil rogaway >> >> On Fri, 8 Feb 2013, Alex Elsayed wrote: >>> Hi, I was wondering if you had any plans to (explicitly) offer similar >>> terms regarding open-source software for EME2 as you recently have for >>> OCB. There was a recent discussion on the dm-crypt mailing list with the >>> title "Cryptographic issues with SSD-technology and wide-block encryption >>> modes." In the course of the discussion Milan Broz, the maintainer of >>> dm-crypt, stated the following: >>> >>> "[It] would be nice to have some not patent encumbered wide mode (no code >>> changes needed, just someone have to invent it and add to crypto API)" >>> >>> I'm just someone who reads the list, but I thought I'd write to point out >>> that there's interest. >>> >>> (Frankly, I'm also very interested in OCB, but the other AE patents have >>> an >>> exceedingly unfortunate chilling effect independent of your license.) > _______________________________________________ dm-crypt mailing list dm-crypt@xxxxxxxx http://www.saout.de/mailman/listinfo/dm-crypt
