On Fri, Jul 11, 2008 at 4:16 AM, Ondrej Certik <[EMAIL PROTECTED]> wrote: > > On Wed, Jul 9, 2008 at 10:47 AM, William Stein <[EMAIL PROTECTED]> wrote: >> >> Hi, >> >> This number theory book that I wrote uses Sage throughout: >> >> http://sage.math.washington.edu/papers/ent/ent-stein/ent.pdf >> >> It will be published by Springer-Verlag as a UTM book sometime >> in the next 6 months. Comments welcome before it's too late :-) > > Very good book, finally I understand a little better what you like on > mathematics and what you need Sage for. :) > > Will the book be available online, or do I need to save the copy now?
Save your copy now! I signed the contract with springer 8 years ago before I worried about things like making books freely available online. Fortunately, i was able to renegotiate the contract with the publisher, so I'll be able to make the book freely available online 18 months after the date of publication. > As a fan, who enjoyes this kind of stuff, but does not do this for > living, I especially like that you wrote those encode/decode methods > for actually turning messages to numbers. Only I found a little > confusing why you first explain this using the base 27, while the > implementation uses the base 256 (obviously), but that's minor. I was > actualy always wondering how hard would it to add to Sage the > functionality to take some gpg encrypted message and turn it into the > numbers that you talk about, so that one can play with it, and at the > end turn this into the gpg message again, so that one can verify that > it really does work as written in the docs, or coded in the gpg > program. E.g. so that one can receive a gpg encrypted message (I do > get those in Debian from time to time) and then take my private key, > import those in Sage as numbers and then decode the message by "hand". > This would make me think that I really understand how it works. :) > I'm betting PyCrypto would do this... William --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
