public async Task <bool> DeleteWebAuthnKeyAsync(User user, int id)
{
var providers = user.GetTwoFactorProviders();
if (providers == null)
{
return(false);
}
var keyName = $"Key{id}";
var provider = user.GetTwoFactorProvider(TwoFactorProviderType.WebAuthn);
if (!provider?.MetaData?.ContainsKey(keyName) ?? true)
{
return(false);
}
if (provider.MetaData.Count < 2)
{
return(false);
}
// Delete U2F token is this is a migrated WebAuthn token.
var entry = new TwoFactorProvider.WebAuthnData(provider.MetaData[keyName]);
if (entry?.Migrated ?? false)
{
var u2fProvider = user.GetTwoFactorProvider(TwoFactorProviderType.U2f);
if (u2fProvider?.MetaData?.ContainsKey(keyName) ?? false)
{
u2fProvider.MetaData.Remove(keyName);
if (u2fProvider.MetaData.Count > 0)
{
providers[TwoFactorProviderType.U2f] = u2fProvider;
}
else
{
providers.Remove(TwoFactorProviderType.U2f);
}
}
}
provider.MetaData.Remove(keyName);
providers[TwoFactorProviderType.WebAuthn] = provider;
user.SetTwoFactorProviders(providers);
await UpdateTwoFactorProviderAsync(user, TwoFactorProviderType.WebAuthn);
return(true);
}
private List <Tuple <string, TwoFactorProvider.WebAuthnData> > LoadKeys(TwoFactorProvider provider)
{
var keys = new List <Tuple <string, TwoFactorProvider.WebAuthnData> >();
if (!HasProperMetaData(provider))
{
return(keys);
}
// Support up to 5 keys
for (var i = 1; i <= 5; i++)
{
var keyName = $"Key{i}";
if (provider.MetaData.ContainsKey(keyName))
{
var key = new TwoFactorProvider.WebAuthnData((dynamic)provider.MetaData[keyName]);
keys.Add(new Tuple <string, TwoFactorProvider.WebAuthnData>(keyName, key));
}
}
return(keys);
}
public KeyModel(string id, TwoFactorProvider.WebAuthnData data)
{
Name = data.Name;
Id = Convert.ToInt32(id.Replace("Key", string.Empty));
Migrated = data.Migrated;
}