README

$ composer require kornrunner/secp256k1

Usage

Sign a message:

<?php

require_once 'vendor/autoload.php';

use kornrunner\Secp256k1;
use kornrunner\Serializer\HexSignatureSerializer;

$secp256k1 = new Secp256k1();

// return signature contains r, s and recovery param (v).
// message and privateKey are hex strings
$signature = $secp256k1->sign($message, $privateKey);

// get r
$r = $signature->getR();

// get s
$s = $signature->getS();

// get recovery param
$v = $signature->getRecoveryParam();

// encode to hex
$serializer = new HexSignatureSerializer();
$signatureString = $serializer->serialize($signature);

// or you can call toHex
$signatureString = $signature->toHex();

Verify a message:

<?php

require_once 'vendor/autoload.php';

use kornrunner\Secp256k1;

$secp256k1 = new Secp256k1();

// signature can be a SignatureInterface object created by sign method
// hash and publicKey are hex strings
$isVerified = $secp256k1->verify($hash, $signature, $publicKey);

// or signature can be a hex string directly
$signatureString = 'f67118680df5993e8efca4d3ecc4172ca4ac5e3e007ea774293e37386480970347427f3633371c1a30abbb2b717dbd78ef63d5b19b5a951f9d681cccdd520320';
$isVerified = $secp256k1->verify($hash, $signatureString, $publicKey);

License

MIT

Crypto

0x9c7b7a00972121fb843af7af74526d7eb585b171