Questions tagged [math]

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17 votes
3 answers
9k views

How do you derive the private key from two signatures that share the same k value?

I wrote my own ECDSA signature algorithm just for the purpose of creating unit tests. With it I created two signatures which went into transaction 56ec7ca7df..., sending from 1GXFXm3es.... These ...
Thorkil Værge's user avatar
9 votes
3 answers
945 views

How is Bitcoin governed by mathematics?

I keep hearing talks from Bitcoin evangelists that claim Bitcoin isn't governed by any central authority, rather it's governed by mathematics. What exactly do they mean when they say "governed by ...
lolololol ol's user avatar
6 votes
1 answer
471 views

What is the relationship between the three possible X coordinates corresponding to a Y coordinate?

Every possible X coordinate on secp256k1 has two corresponding Y coordinates, one of which is the negation of the other. I've also been told that every possible Y coordinate has three corresponding X ...
Vojtěch Strnad's user avatar
4 votes
1 answer
605 views

Is BIP 32 Technology Cryptographic Curve Agnostic?

Does BIP 32 always implicitly assume secp256k1 elliptic curve cryptography (ECC) is to be applied, or can BIP 32 technology also be applied to create extended public or private keys that can readily ...
skaht's user avatar
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