public async Task <IMultiFactorSettings> GenerateMfaAsync(IMfaRepository mfaRepository, long userId, bool generateAdditional, CancellationToken cancellationToken = default)
{
var recbase = 0L;
using (var rng = new SecureRandom())
recbase = rng.GetInt64();
var totp = TotpGeneratorSettings.GenerateGoogleAuthenticator(null, null);
return(await mfaRepository.ConfigureMfaAsync(userId, totp.Secret.ToArray(), totp.Digits, (MultiFactorHmac)totp.Algorithm, totp.Period, MultiFactorType.Google, null, recbase, cancellationToken));
}
/// <summary>
/// Creates new Google Authenticator-compatible settings, and generates a new secret.
/// </summary>
/// <param name="label">Label for the generator.</param>
/// <param name="issuer">Issuer for the generator.</param>
/// <returns>Created generator settings.</returns>
public static HotpGeneratorSettings GenerateGoogleAuthenticator(string label, string issuer)
{
var secret = new byte[160 / 8];
long counter;
using (var rng = new SecureRandom())
{
rng.GetBytes(secret);
counter = rng.GetInt64();
}
return CreateGoogleAuthenticator(label, issuer, secret, counter);
}
