On 4 May 2014 16:02, Jan Medina <[email protected]> wrote: > Hi John, hi Simon. > > For example i want to construct the Bose.Chowla sequence with parameters > p=839 y h=17, my question is what way its better to construct this > sequence?. >
I have no idea, sorry. > I want to know this because i'm researching on the Chor Rivest system. Thus > I need a good algorithm to solve the DLP. You are very welcome to implement better algorithms than Sage has already and contribute them! John > > > 2014-05-04 9:34 GMT-05:00 Simon King <[email protected]>: >> >> Hi Jan, hi John, >> >> On 2014-05-04, John Cremona <[email protected]> wrote: >> > On 4 May 2014 13:20, Jan Medina <[email protected]> wrote: >> >> I wan to calculate log(\theta+i,\theta) for i in a finte field and >> >> theta a >> >> primtive element >> >> >> > >> > You can see the documentation of this function like this: >> > >> > sage: F=GF(101) >> > sage: a=F(3) >> > >> > sage: a.log? >> > >> > and even the code using a.log?? >> >> I somehow have the impression that part of the problem is that John >> thinks in terms of methods ( a.log() ), while Jan is thinking in terms >> of functions ( log(a) ). >> >> Anyway, the documentation of the *function* "log" can be seen with >> sage: log? >> and the source code with >> sage: log?? >> >> And it seems to be the case that ultimately the function call log(a) >> will end up with the method call a.log(). So, answering Jan's question: >> Yes, if alpha is is an element of a finite field with primitive element >> theta, then log(alpha,theta) is essentially the same as directly calling >> alpha.log(theta), and this the discrete logarithm. >> >> Best regards, >> Simon >> >> >> -- >> You received this message because you are subscribed to a topic in the >> Google Groups "sage-support" group. >> To unsubscribe from this topic, visit >> https://groups.google.com/d/topic/sage-support/mbx4_5AN208/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> [email protected]. >> >> To post to this group, send email to [email protected]. >> Visit this group at http://groups.google.com/group/sage-support. >> For more options, visit https://groups.google.com/d/optout. > > > -- > You received this message because you are subscribed to the Google Groups > "sage-support" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/sage-support. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
