secp256k1 for ethereum, this package depends on mdanter/ecc package.
Set minimum stability to dev
composer require web3p/secp256k1
Sign a message:
use Web3p\Secp256k1\Secp256k1;
use Web3p\Secp256k1\Serializer\HexSignatureSerializer;
$secp256k1 = new Secp256k1();
// return signature contains r and s.
// message and privateKey are hex string
$signature = $secp256k1->sign($message, $privateKey);
// get r
$r = $signature->getR();
// get s
$s = $signature->getS();
// encode to hex
$serializer = new HexSignatureSerializer();
$signatureString = $serializer->serialize($signature);
// or you can call toHex
$signatureString = $signature->toHex();Verify a message:
use Web3p\Secp256k1\Secp256k1;
$secp256k1 = new Secp256k1();
// signature was created from sign method.
// hash and publicKey are hex string
$isVerified = $secp256k1->verify($hash, $signature, $publicKey);Todo.
MIT