Changes between Version 1 and Version 2 of Ticket #24640, comment 2


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Timestamp:
02/02/18 03:02:42 (4 years ago)
Author:
djao
Comment:

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  • Ticket #24640, comment 2

    v1 v2  
    11This is related to ticket #22161, although our proposed fix is different from Kevin's. (I wasn't sure how to deal with tickets that already have a branch.)
    22
    3 Basically, I am convinced that you never want to compute the group order or even the point order separately, ever. You should just always list all the multiples of P until you repeat back to where you started. In any other context, this would be a **slow** way to compute the group order, but in this context, it's a **free** computation, since you need the entire list of points anyway in order to apply Velu's formulas.
     3Basically, I am convinced that you never want to compute the group order or even the point order separately, ever. You should just always list all the multiples of P until you repeat back to where you started. In any other context, this would be a **slow** way to compute the point order, but in this context, it's a **free** computation, since you need the entire list of points anyway in order to apply Velu's formulas.