ASKSAGE: Sage Q&A Forum - RSS feedhttps://ask.sagemath.org/questions/Q&A Forum for SageenCopyright Sage, 2010. Some rights reserved under creative commons license.Wed, 25 Sep 2019 12:54:52 +0200elliptic curve : find only xhttps://ask.sagemath.org/question/48003/elliptic-curve-find-only-x/sir,
im a python programme and some idea of sagemath and c++ and .net
i study the btc cryptography seacp256k1
my problem is that
1. how to find x value where start from nearest of k so my loop is small and find the k
2.how to find cyclic ring where the repeate of x and ecliptic curve on seacp256k1 or bitcoin parameters
3.if i have x,y of public key and address how to find private key descrete logirithm problem loop is very large
how can i mage the small cuve , any apprelication or function if availabel in sagemath i required with baby step consider to proofSat, 21 Sep 2019 10:45:28 +0200https://ask.sagemath.org/question/48003/elliptic-curve-find-only-x/Comment by dan_fulea for <p>sir,</p>
<p>im a python programme and some idea of sagemath and c++ and .net
i study the btc cryptography seacp256k1</p>
<p>my problem is that </p>
<ol>
<li>how to find x value where start from nearest of k so my loop is small and find the k</li>
</ol>
<p>2.how to find cyclic ring where the repeate of x and ecliptic curve on seacp256k1 or bitcoin parameters</p>
<p>3.if i have x,y of public key and address how to find private key descrete logirithm problem loop is very large
how can i mage the small cuve , any apprelication or function if availabel in sagemath i required with baby step consider to proof</p>
https://ask.sagemath.org/question/48003/elliptic-curve-find-only-x/?comment=48054#post-id-48054Please initialize the curve in sage, or at least give a link for it, else potential answerers will have to search and still have doubts. Then at point one that $k$ is not defined, and for "the loop" i have no starting point. Point two, what is a "cyclic ring"? Something like $\Bbb Z/N$, integers modulo some $N$ (possibly the order of the elliptic curve we do not have)? And what should happen in this ring? ("Repeating $x$" does not make too much sense.) Point three is hard to compile, please give precise reference which baby-step-giant-step algorithm should be involved. I know that a comment like this one to an Anonymous post is almost in vain...Wed, 25 Sep 2019 12:54:52 +0200https://ask.sagemath.org/question/48003/elliptic-curve-find-only-x/?comment=48054#post-id-48054