# What is a first, and second element of secp256k1?

What coordinates have a first, and second element(point) of secp256k1 with standard parameters of order and modul ?

What is a first, and second element of secp256k1? What coordinates has points with Order =1 and order = 2?

Br

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Can you provide more details (what is secp256k1, for example), explain what you've tried, and tell us how this relates to SageMath?

( 2023-03-07 00:42:05 +0200 )edit

@John Palmeri, I talk about making point in this way

https://crypto.stackexchange.com/questions/89362/is-there-any-way-to-mapping-point-between-2-elliptic-curves (https://crypto.stackexchange.com/ques...)

( 2023-03-07 03:49:00 +0200 )edit

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The order of secp256k1 is odd (see here), and so there are no points of even order, including order 2. The only order-1 point is the (additive) identity element (0 : 1 : 0).

I'm not sure what are "first" and "second" elements you refer to.

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What will be coordinate of points like in this way ,?

https://crypto.stackexchange.com/questions/89362/is-there-any-way-to-mapping-point-between-2-elliptic-curves (See this url)

How to get point from E[3], substract this point from publick key, and get in result poolint with order = order of pubkey - 3 ???

( 2023-03-07 03:53:44 +0200 )edit

What points you are talking about and how the given link is relevant to your question? Also, what public key you refer to?

( 2023-03-07 13:50:05 +0200 )edit