public Task <string> Build(string purpose, string target, int lifeTimeSeconds, int maxErrorCount, string code, string?securityStamp = null)
{
if (purpose is null)
{
throw new ArgumentNullException(nameof(purpose));
}
if (target is null)
{
throw new ArgumentNullException(nameof(target));
}
if (Options.CurrentValue.LifeTimeSecond <= 0)
{
throw new InvalidOperationException("Invalid options: Shashlik.Captcha.LifeTimeSecond");
}
if (Options.CurrentValue.MaxErrorCount < 0 || Options.CurrentValue.MaxErrorCount > 99)
{
throw new InvalidOperationException("Invalid options: Shashlik.Captcha.MaxErrorCount, should be 0~99");
}
var key = GetKey(purpose, target, securityStamp);
return(Task.FromResult(TotpGenerator.Generate(key).ToString()));
}
/// <summary>
/// Get current user's code
/// </summary>
public static string Generate(string secret)
{
_totpGenerator = new TotpGenerator();
return(_totpGenerator.Generate(secret).ToString());
}