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Example code of starkbank/ecdsa

Informations about the package ecdsa

A lightweight and fast PHP ECDSA

Overview

This is a pure PHP implementation of the Elliptic Curve Digital Signature Algorithm. It is compatible with OpenSSL and uses elegant math such as Jacobian Coordinates to spped up the ECDSA on pure PHP.

Installation

Composer

To install the package with Composer, run:

To use the bindings, use Composer's autoload:

External dependencies

The package makes use of the 'GNU Multiple Precision' (GMP) library. For installation details, see: https://www.php.net/manual/en/gmp.installation.php

Curves

We currently support secp256k1, but you can add more curves to your project. You just need to use the Curve::add() method.

Speed

We ran a test on a Macbook Air M1 2020 using PHP 8.1. We ran the library 100 times and got the average time displayed bellow:

Library sign verify
starkbank-ecdsa 1.9ms 3.7ms

Sample Code

How to sign a json message for Stark Bank:

Simple use:

How to add more curves:

OpenSSL

This library is compatible with OpenSSL, so you can use it to generate keys:

Create a message.txt file and sign it:

It's time to verify:

You can also verify it on terminal:

NOTE: If you want to create a Digital Signature to use in the Stark Bank, you need to convert the binary signature to base64.

You can also verify it with this library:

Run all unit tests

All versions of ecdsa with dependencies

PHP Build Version
Package Version
Requires php Version >=7.0
ext-gmp Version *
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