Quote from: NotATether on Today at 03:13:37 AM

Quote from: COBRAS on August 16, 2022, 10:30:56 PM

I divide 0xf56926f9ca9abc1065153d25383e80 / -1
Result: 20212ef8c52b3a842d0bc

but then I divide pubkey from

0xf56926f9ca9abc1065153d25383e80 - privkey;

pubkey ./calculatefromkey f56926f9ca9abc1065153d25383e80
privatekey: 0000000000000000000000000000000000f56926f9ca9abc1065153d25383e80
publickey compressed: 02470a635de37b909187e612e5aa853decbb9769416a2ecd055f990c1de501f66c

0xf56926f9ca9abc1065153d25383e80 is a 116-bit private key, which out of range for n. What's more, you're dividing it by -1 so it calculated -0xf56926f9ca9abc1065153d25383e80 instead. This is still not in range, so it'll keep adding N (2^70 = 1??) to this number until it is within range, hence mod(-0xf56926f9ca9abc1065153d25383e80, n) = 20212ef8c52b3a842d0bc <-- this is a 70-bit private key.

When you attempt to make a public key it interprets the input as 256 bits. So if you want to avoid that, you must insert the modulus first.

why modulus ?

i need change order, not midulus Huh

?

Thank's