PHP Validation

Validate signature belongs to the signing address

To validate the signature belongs to the signing address, we can create a class Signature that will call the method personalEcRecover from Ethereum\EcRecover:

<?php

namespace Signature;

use Ethereum\EcRecover;
use Ethereum\DataType\EthD;
 
 /**
 * Class that validates sender signature
 *
 */
class Signature
{ 

  /**
   * @dataProvider ecRecover
   *
   * @param $address
   * @param $transaction
   * @param $signature
   *
   * @returns bool
   *
   * @throws \Exception
   */
    public function checkMatch($address, $transaction, $signature)
    {
      $recoveredAddr = Ethereum::personalEcRecover($transaction, new EthD($signature) );
      $isEqual = $address ==  $recoveredAddr;
      return $isEqual;
    }

}

?>