https://github.com/deemru/curve25519

Curve25519 sign/verify for PHP
https://github.com/deemru/curve25519

curve25519 php sign signature verify wavesplatform

Last synced: 3 months ago
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Curve25519 sign/verify for PHP

• Host: GitHub
• URL: https://github.com/deemru/curve25519
• Owner: deemru
• License: mit
• Created: 2018-08-27T11:05:25.000Z (almost 7 years ago)
• Default Branch: master
• Last Pushed: 2023-04-10T15:52:56.000Z (about 2 years ago)
• Last Synced: 2025-03-17T18:16:26.561Z (3 months ago)
• Topics: curve25519, php, sign, signature, verify, wavesplatform
• Language: PHP
• Homepage: https://packagist.org/packages/deemru/curve25519
• Size: 28.3 KB
• Stars: 11
• Watchers: 2
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Curve25519

[![packagist](https://img.shields.io/packagist/v/deemru/curve25519.svg)](https://packagist.org/packages/deemru/curve25519) [![php-v](https://img.shields.io/packagist/php-v/deemru/curve25519.svg)](https://packagist.org/packages/deemru/curve25519)  [![GitHub](https://img.shields.io/github/actions/workflow/status/deemru/Curve25519/php.yml?label=github%20actions)](https://github.com/deemru/Curve25519/actions/workflows/php.yml)  [![codacy](https://img.shields.io/codacy/grade/49e6e148e477494da94320825c715dfd.svg?label=codacy)](https://app.codacy.com/gh/deemru/Curve25519/files) [![license](https://img.shields.io/packagist/l/deemru/curve25519.svg)](https://packagist.org/packages/deemru/curve25519)

[Curve25519](https://github.com/deemru/Curve25519) implements the missing functionality of sign/verify on [elliptic curve 25519](https://en.wikipedia.org/wiki/Curve25519).

- Cryptographically compatible sign/verify

- Built in cache for last key calculations

- Sodium variant of the sign function (~2000x faster)

## Usage

```php

$curve25519 = new Curve25519();

$msg = 'Hello, world!';

$privateKey = random_bytes( 32 );

$sig = $curve25519->sign( $msg, $privateKey );

$publicKey = $curve25519->getPublicKeyFromPrivateKey( $privateKey );

$verify = $curve25519->verify( $sig, $msg, $publicKey );

if( !$verify )

    exit( 1 );

```

## Requirements

- [PHP](http://php.net) >= 5.6

## Recommended

- [PHP](http://php.net) >= 7.2

- [Sodium](http://php.net/manual/en/book.sodium.php)

## Installation

Require through Composer:

```json

{

    "require": {

        "deemru/curve25519": "1.0.*"

    }

}

```

## Notice

- `sign_sodium` hashes private key internally by SHA-512

- Beware of `rseed` functionality (for experts only)

- Consider to use [ED25519_NO_SHA512SK sodium build](https://gist.github.com/deemru/145c3eb323bb3fb0f1cc4a72f5567640)