Secp256k1

Library providing secp256k1 curve operations. Using this library you can:

• apply scalar multiplication to point(this operation used in Bitcoin private to public keys mapping)
• add two points

This code based on source code from answer:

• https://bitcoin.stackexchange.com/questions/25024/how-do-you-get-a-bitcoin-public-key-from-a-private-key

• This library fix the bug of original library abount the calculate of rem.

Installation

pre-requirement

# for OSX
brew install gmp

adding secp256k1 to your list of dependencies in mix.exs:

def deps do
  [
     {:secp256k1, git: "https://github.com/peatio/secp256k1", branch: "master"},
  ]
end