# Bitcoinex.Secp256k1 (bitcoinex v0.1.2) View Source

ECDSA Secp256k1 curve operations. libsecp256k1: https://github.com/bitcoin-core/secp256k1

Currently supports ECDSA public key recovery.

In the future, we will NIF for critical operations. However, it is more portable to have a native elixir version.

# Link to this section Summary

## Functions

ecdsa_recover_compact does ECDSA public key recovery.

Returns the y-coordinate of a secp256k1 curve point (P) using the x-coordinate. To get P(y), we solve for y in this equation: y^2 = x^3 + 7.

# Link to this section Functions

## Specs

ecdsa_recover_compact does ECDSA public key recovery.

## Specs

Returns the y-coordinate of a secp256k1 curve point (P) using the x-coordinate. To get P(y), we solve for y in this equation: y^2 = x^3 + 7.