public static SecureString GetPassword(string username)
{
lock (_lock)
{
if (cache != null)
{
SecureString s;
if (cache.TryGetValue(username, out s))
{
return(s);
}
}
else
{
cache = new Dictionary <string, SecureString>(StringComparer.OrdinalIgnoreCase);
}
if (state != StorageState.None)
{
try
{
var i = GetStorage().Read <DataItem>(username);
using (var crypto = new Cryptography.Crypto())
{
SecureString s;
if (i.Data.Length > 0)
{
var data = crypto.Decrypt(i.Data);
try
{
s = FromByteArray(data);
}
finally
{
Array.Clear(data, 0, data.Length);
}
}
else
{
s = new SecureString();
s.MakeReadOnly();
}
cache.Add(username, s);
return(s);
}
}
catch (Exception e)
{
Util.Logging.Log(e);
}
}
}
return(null);
}
private static void OnCryptoChanged()
{
var store = GetStorage();
var items = new List <DataItem>();
var o = Settings.Encryption.Value;
var scope = o != null ? o.Scope : Settings.EncryptionScope.CurrentUser;
using (var crypto = new Cryptography.Crypto())
{
try
{
foreach (var item in store.ReadAll <DataItem>())
{
try
{
if (crypto.GetScope(item.Data) == scope)
{
continue;
}
var data = crypto.Decrypt(item.Data);
try
{
items.Add(new DataItem()
{
ID = item.ID,
Data = crypto.Compress(crypto.Encrypt(scope, data), Cryptography.Crypto.CryptoCompressionFlags.All),
});
}
finally
{
Array.Clear(data, 0, data.Length);
}
}
catch (Exception e)
{
Util.Logging.Log(e);
}
}
}
catch { }
}
if (items.Count > 0)
{
store.Write <DataItem>(items);
}
}