updateHash example

        } else {
            $encoderName = $resultIdentity['encoder'];
            $plaintext = $this->_credential;
            $hash = $resultIdentity[$this->_credentialColumn];

            $passwordValid = Shopware()->PasswordEncoder()->isPasswordValid($plaintext, $hash, $encoderName);
            if ($passwordValid) {
                $defaultEncoderName = Shopware()->PasswordEncoder()->getDefaultPasswordEncoderName();

                if ($encoderName !== $defaultEncoderName) {
                    $this->updateHash($plaintext, $defaultEncoderName);
                } else {
                    $this->rehash($plaintext, $hash, $encoderName);
                }
            }
        }

        if (!$passwordValid) {
            $this->_authenticateResultInfo['code'] = Zend_Auth_Result::FAILURE_CREDENTIAL_INVALID;
            $this->_authenticateResultInfo['messages'][] = 'Supplied credential is invalid.';

            return $this->_authenticateCreateAuthResult();
        }