public string GetSecretToken()
{
Util.Check(_settings.Options.IsSet(RecaptchaOptions.UseSecureToken), "Using secure token with reCapcha is not configured, cannot create token.");
var sessionId = Guid.NewGuid();
var timeStamp = (long)(DateTime.UtcNow - UnixEra).TotalMilliseconds;
var token = RecaptchaUtil.GenerateSecureToken(sessionId, timeStamp, _encryptionKeyIv);
return(token);
}
//we allow setting recaptcha service later, at web app config time
public RecaptchaService(RecaptchaSettings settings)
{
Util.Check(settings != null, "Recaptcha settings may not be null.");
Util.Check(!string.IsNullOrEmpty(settings.SiteSecret), "reCaptcha not configured: SiteSecret may not be empty.");
Util.Check(!string.IsNullOrEmpty(settings.SiteKey), "reCaptcha not configured: SiteKey may not be empty.");
_settings = settings;
if (_settings.Options.IsSet(RecaptchaOptions.UseSecureToken))
{
_encryptionKeyIv = RecaptchaUtil.GetEncryptionKey(_settings.SiteSecret);
}
} //constructor