Quote from: digaran on Today at 10:53:59 AM

Some elliptic curve magic ahead!

Public key for 2^256 in secp256k1 :

Code:

03dd3625faef5ba06074669716bbd3788d89bdde815959968092f76cc4eb9a9787

Private key :

Code:

000000000000000000000000000000014551231950b75fc4402da1732fc9bebf

Public key divided by 2 :

Code:

02b23790a42be63e1b251ad6c94fdef07271ec0aada31db6c3e8bd32043f8be384

Private key : 2^255

Code:

8000000000000000000000000000000000000000000000000000000000000000

Now we add an even key to our 2^256 :
Target Pub

Code:

034a4a6dc97ac7c8b8ad795dbebcb9dcff7290b68a5ef74e56ab5edde01bced775

Target Prv

Code:

0000000000000000000000000000000000000000000000000000000000008000

Result : pub

Code:

02c028224b2c45bd797143e8f32f025e24601ed85f27ef310d7d55020a192ddba5

Prv

Code:

000000000000000000000000000000014551231950b75fc4402da1732fca3ebf

Divide by 2 , result :

Code:

0216ca7e1edb137684b4aa8a41fd0f8a89dcb773b9db807a9f3f864de2161735ff

Now subtract pub 2^255 from above, result :

Code:

03111d6a45ac1fb90508907a7abcd6877649df662f3b3e2741302df6f78416824a

Prv, also real half of our original target :

Code:

03111d6a45ac1fb90508907a7abcd6877649df662f3b3e2741302df6f78416824a , 0000000000000000000000000000000000000000000000000000000000004000

I just enjoy making a simple division difficult and twisted! 🤣, now chop chop start your brain's engine and do some calculation, large fractions could be solved by accounting for the above results, not telling you how.

Dive deep and let your brain solve it.😉

It is a pity that such an operation will not work with an odd key))