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Informations about the package phpecc

Pure PHP Elliptic Curve DSA and DH

Latest Stable Version Total Downloads Latest Unstable Version License

Information

This library is a fork of Matyas Danter's ECC library. All credit goes to him and previous contributors. This fork is a drop in replacement that contains support for Schnorr signing and verifying.

For more information on Elliptic Curve Cryptography please read this fine article.

The library supports the following curves:

During ECDSA, a random value k is required. It is acceptable to use a true RNG to generate this value, but should the same k value ever be repeatedly used for a key, an attacker can recover that signing key. The HMAC random generator can derive a deterministic k value from the message hash and private key, voiding this concern.

The library uses a non-branching Montgomery ladder for scalar multiplication, as it's constant time and avoids secret dependant branches.

License

This package is released under the MIT license.

Requirements

Installation

You can install this library via Composer :

composer require public-square/phpecc

Contribute

Please open a pull request.

Usage

Examples:

All versions of phpecc with dependencies

PHP Build Version
Package Version
Requires php Version ^8.0
ext-gmp Version *
fgrosse/phpasn1 Version ^2.0
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