Sorry. Checking again I find no encryption used by RNIB. Good for them. The encryption spec requires an NDA. There should be a mechanism documented somewhere at http://www.daisy.org. If not, I can put you in touch. The quadrupling of storage capacity on cassettes is a welcome side benefit, but not the fundamental reason. After all, if they were only into storage capacity, they'd have no reason to go through the expense of a different tracking format. Shane writes: > On Wed, Feb 09, 2005 at 10:03:37AM -0500, Janina Sajka wrote: > > Sina Bahram writes: > > > RFB&D protects their daisy books with a propriotary encryption algorithm ... > > > Does RNIB do the same? > > > > > > Yes. It is definitely the case. > > Not as far as I can tell. Nothing is encrypted on the CNIB > title that I can find. However, that's not to say I didn't > miss something. > > > However, it would not be hard to write a module to open the content, > > though the terms of licensing would not allow publishing the source. > > Do you have specs on how the encryption works? The only > info I came across suggests there is a player key involved. > > > The reason for this encryption is to meet legal copyright restrictions > > on the distribution of this content. It's the computer equivalent of > > making audio cassette talking books use half speed and open reel track > > format, rather than standard cassette speed and standard track format. > > That and half speed four track effectively quadrupals the > storage capacity of a single cassette. > > > > Good luck with this problem: I'd be interested in getting a solution to it, > > > as I think it may lead to one, hopefully, for reading RFB&D daisy formats > > > without having to pay them for the software and/or hardware, which I find > > > ridiculous. > > Well, I solved that particular segfault but my message > didn't make it to the list. It seems the nccs.html on the > disc referenced > bagw001A.smil > where the file on the disc was bagw001a.smil, note the case > of the a, the open failed and listenup didn't handle that > too well. I fixed that but now it's segfaulting elsewhere. > Still looking into that. > > Best regards, > Shane > > -- > Shane Wegner > http://www.cm.nu/~shane/ > > _______________________________________________ > Speakup mailing list > Speakup at braille.uwo.ca > http://speech.braille.uwo.ca/mailman/listinfo/speakup -- Janina Sajka Phone: +1.202.494.7040 Partner, Capital Accessibility LLC http://www.CapitalAccessibility.Com Chair, Accessibility Workgroup Free Standards Group (FSG) janina at freestandards.org http://a11y.org If Linux can't solve your computing problem, you need a different problem.
