private async Task <bool> TestVaultPassphrase(
VaultIndex vaultIndex,
string masterPassphrase)
{
Dictionary <string, string> parameters = new Dictionary <string, string>();
parameters.Add("KeyDerivationFunction", AppConfig.Instance.KeyDerivationFunction);
switch (AppConfig.Instance.KeyDerivationFunction)
{
case AppConfig.CACHY_KEYDERIVATIONFUNCTION_PBKDF2:
{
parameters.Add("IterationCount", AppConfig.Instance.PBKDF2IterationCount.ToString());
break;
}
case AppConfig.CACHY_KEYDERIVATIONFUNCTION_SCRYPT:
{
parameters.Add("IterationCount", AppConfig.Instance.SCryptIterationCount.ToString());
parameters.Add("BlockSize", AppConfig.Instance.SCryptBlockSize.ToString());
parameters.Add("ThreadCount", AppConfig.Instance.SCryptThreadCount.ToString());
break;
}
}
AESEncryptedVaultSerialiser serialiser = new AESEncryptedVaultSerialiser();
try
{
GenericResult <Common.LoadResult, Vault> loadResult = await vaultIndex.Load(serialiser, masterPassphrase, parameters.ToArray());
return(loadResult.Result == Common.LoadResult.Success);
}
catch (Exception ex)
{
App.AppLogger.Logger.Log(devoctomy.DFramework.Logging.Interfaces.LoggerMessageType.Exception,
"Failed to unlock the vault at '{0}'.\r\n'{1}'.",
vaultIndex.FullPath,
ex.Message);
return(false);
}
}
private async Task <Boolean> UnlockVault()
{
if (VaultIndex != null && !String.IsNullOrEmpty(MasterPassphrase))
{
try
{
Dictionary <string, string> parameters = new Dictionary <string, string>();
parameters.Add("KeyDerivationFunction", AppConfig.Instance.KeyDerivationFunction);
switch (AppConfig.Instance.KeyDerivationFunction)
{
case AppConfig.CACHY_KEYDERIVATIONFUNCTION_PBKDF2:
{
parameters.Add("IterationCount", AppConfig.Instance.PBKDF2IterationCount.ToString());
break;
}
case AppConfig.CACHY_KEYDERIVATIONFUNCTION_SCRYPT:
{
parameters.Add("IterationCount", AppConfig.Instance.SCryptIterationCount.ToString());
parameters.Add("BlockSize", AppConfig.Instance.SCryptBlockSize.ToString());
parameters.Add("ThreadCount", AppConfig.Instance.SCryptThreadCount.ToString());
break;
}
}
AESEncryptedVaultSerialiser serialiser = new AESEncryptedVaultSerialiser();
GenericResult <Common.LoadResult, Vault> loadResult = await _vaultIndex.Load(serialiser, MasterPassphrase, parameters.ToArray());
_masterPassphrase = String.Empty;
if (loadResult.Result == Common.LoadResult.Success)
{
Vault = loadResult.Value;
Vault.PropertyChanged += _vault_PropertyChanged;
if (!_vaultIndex.IsInLocalVaultStore && !VaultIndexFile.Instance.VaultIsIndexed(_vault))
{
if (VaultIndex.SyncMode == Common.SyncMode.CloudProvider)
{
throw new NotImplementedException("Adding existing cloud provider vaults is not currently supported.");
}
VaultIndexFile.Instance.AddVaultToLocalVaultStoreIndex(_vault,
VaultIndex.SyncMode,
VaultIndex.Provider,
String.Empty,
false);
}
NotifyPropertyChanged("Vault");
NotifyPropertyChanged("FilteredCredentials");
UpdatePageTitle();
ResetIdleTime();
if (_vaultIndex.Unopened)
{
//Mark it as opened and update the name and description
_vaultIndex.MarkAsOpened(
_vault.Name,
_vault.Description);
VaultIndexFile.Instance.Save();
}
_vaultIndex = null;
if (AppConfig.Instance.AutoCloseVault)
{
_autoLockTimer.Start();
}
return(true);
}
else
{
return(false);
}
}
catch (Exception ex)
{
await App.Controller.MainPageInstance.DisplayAlert("Unlock Vault",
String.Format("Failed to unlock the vault, {0}.", ex.Message),
"OK");
((App)App.Current).NavigateToVaultsList();
return(false);
}
}
else
{
return(false);
}
}