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secp256k1

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    secp256k1

This module provides native bindings to ecdsa secp256k1 functions


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Maintainers
1
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1.84 MB
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secp256k1-node

VersionMac/LinuxWindows
NPM PackageBuild StatusAppVeyor

js-standard-style

This module provides native bindings to bitcoin-core/secp256k1. In browser elliptic will be used.

This library is experimental, so use at your own risk. Works on node version 4.0.0 or greater.

Installation

from npm

npm install secp256k1

from git
git clone git@github.com:cryptocoinjs/secp256k1-node.git
cd secp256k1-node
git submodule update --init
npm install
Windows

The easiest way to build the package on windows is to install windows-build-tools.

Or install the following software:

And run commands:

npm config set msvs_version 2015 --global
npm install npm@next -g

Based on:

Usage

const { randomBytes } = require('crypto')
const secp256k1 = require('secp256k1')
// or require('secp256k1/elliptic')
//   if you want to use pure js implementation in node

// generate message to sign
const msg = randomBytes(32)

// generate privKey
let privKey
do {
  privKey = randomBytes(32)
} while (!secp256k1.privateKeyVerify(privKey))

// get the public key in a compressed format
const pubKey = secp256k1.publicKeyCreate(privKey)

// sign the message
const sigObj = secp256k1.sign(msg, privKey)

// verify the signature
console.log(secp256k1.verify(msg, sigObj.signature, pubKey))
// => true

* .verify return false for high signatures

Second pure js implementation

Project has yet one secp256k1 implementation based on elliptic and bn.js. The main purpose of this smaller size, high performance and easy code audit. This implementation is super experimental, use it at your own risk.

LICENSE

This library is free and open-source software released under the MIT license.

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Last updated on 19 Dec 2019

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