src/Payum/Be2Bill/Api.php
public function verifyHash(array $params)
    {
        if (empty($params['HASH'])) {
            return false;
        }

        $hash = $params['HASH'];
        unset($params['HASH']);

        return $hash === $this->calculateHash($params);
    }
public function verifyHash(array $params)
    {
        if (empty($params['HASH'])) {
            return false;
        }

        $hash = $params['HASH'];
        unset($params['HASH']);

        return $hash === $this->calculateHash($params);
    }
Verify if the hash of the given parameter is correct

@param array $params

@return bool