/**
* Create a TOTP URI for use with Google Authenticator.
*
* Note that this is not a URI for the QR code used by Google Authenticator.
* The URI produced by this method is used as the actual content of the QR
* code, and follows a special set of conventions understood by Google
* Authenticator, and other OTP apps.
*
* @param TotpConfigurationInterface $configuration The TOTP configuration.
* @param TimeBasedOtpSharedParametersInterface $shared The shared parameters.
* @param string $label The label for the account.
* @param string|null $issuer The issuer name.
* @param boolean|null $issuerInLabel True if legacy issuer support should be enabled by prefixing the label with the issuer name.
*
* @return string The TOTP URI.
*/
public function createTotp(TotpConfigurationInterface $configuration, TimeBasedOtpSharedParametersInterface $shared, $label, $issuer = null, $issuerInLabel = null)
{
if (30 === $configuration->window()) {
$parameters = '';
} else {
$parameters = '&period=' . rawurlencode($configuration->window());
}
return $this->buildUri('totp', $parameters, $configuration, $shared, $label, $issuer, $issuerInLabel);
}
/**
* Generate a TOTP value.
*
* @link http://tools.ietf.org/html/rfc6238#section-4
*
* @param TotpConfigurationInterface $configuration The configuration to use for generation.
* @param TimeBasedOtpSharedParametersInterface $shared The shared parameters to use for generation.
*
* @return HotpValueInterface The generated TOTP value.
*/
public function generateTotp(TotpConfigurationInterface $configuration, TimeBasedOtpSharedParametersInterface $shared)
{
return $this->generator()->generateHotp(new HotpConfiguration($configuration->digits(), null, null, $configuration->secretLength(), $configuration->algorithm()), new CounterBasedOtpSharedParameters($shared->secret(), intval(floor($shared->time() / $configuration->window()))));
}