public async Task <UserVerificationInfo> SendVerificationCodeAsync(InternationalPhone phone)
{
var secretKey = new byte[6];
using (var rng = new RNGCryptoServiceProvider())
{
rng.GetBytes(secretKey);
}
var otp = new Totp(secretKey, step: GenerationDelaySeconds);
string code = otp.ComputeTotp(DateTime.UtcNow);
await sms.SendAsync(phone, $"Code: {code}");
return(new UserVerificationInfo(phone, Convert.ToBase64String(secretKey)));
}
public static bool TryParse(string phone, out InternationalPhone parsed)
{
PhoneNumberUtil util = PhoneNumberUtil.GetInstance();
try
{
PhoneNumber phoneNumber = util.Parse(phone, null);
parsed = new InternationalPhone(util.Format(phoneNumber, PhoneNumberFormat.INTERNATIONAL));
return(true);
}
catch (NumberParseException)
{
parsed = null;
return(false);
}
}
