public static AnswerAndDate ParseAnswerAndDate(string encryptedAnswer, int timeoutInSeconds)
{
AnswerAndDate answerAndDate;
answerAndDate._expired = false;
answerAndDate._answer = string.Empty;
answerAndDate._date = DateTime.MinValue;
if (String.IsNullOrEmpty(encryptedAnswer))
{
return(answerAndDate);
}
string decryptedAnswer = CaptchaBase.DecryptString(encryptedAnswer);
string[] answerParts = decryptedAnswer.Split('|');
if (answerParts.Length < 2)
{
return(answerAndDate);
}
answerAndDate._answer = answerParts[0];
answerAndDate._date = DateTime.ParseExact(answerParts[1], "yyyy/MM/dd HH:mm", CultureInfo.InvariantCulture);
if (timeoutInSeconds != 0 && (DateTime.Now - answerAndDate._date).TotalSeconds >= timeoutInSeconds)
{
throw new CaptchaExpiredException(Resources.CaptchaExpired_WaitedTooLong);
}
return(answerAndDate);
}
/// <summary>
/// Returns a base 64 encrypted serialized representation of this object.
/// </summary>
/// <returns></returns>
public string ToEncryptedString()
{
if (Width == 0)
{
Width = 180;
}
if (Height == 0)
{
Height = 50;
}
return(CaptchaBase.EncryptString(ToString()));
}
/// <summary>
/// Reconstructs an instance of this type from an encrypted serialized string.
/// </summary>
/// <param name="encrypted"></param>
public static CaptchaInfo FromEncryptedString(string encrypted)
{
string decrypted = CaptchaBase.DecryptString(encrypted);
string[] values = decrypted.Split('|');
var info = new CaptchaInfo
{
Width = int.Parse(values[0], CultureInfo.InvariantCulture),
Height = int.Parse(values[1], CultureInfo.InvariantCulture),
WarpFactor = (CaptchaImage.FontWarpFactor)Enum.Parse(typeof(CaptchaImage.FontWarpFactor), values[2]),
FontFamily = values[3],
Text = values[4],
DateGenerated = DateTime.ParseExact(values[5], "yyyy/MM/dd HH:mm:ss", CultureInfo.InvariantCulture)
};
return(info);
}