public static void UpdateItem(PasswordEntry entry)
{
using (var connection = NewConnection())
{
connection.CreateTable<PasswordEntry>();
entry.Labels = (entry.Labels ?? "").ToLower();
connection.Update(entry);
connection.Commit();
}
}
private static void InsertItem(PasswordEntry entry)
{
using (var connection = NewConnection())
{
connection.CreateTable<PasswordEntry>();
var id = connection.Insert(entry);
//entry.Id = id;
connection.Commit();
}
}
private void ContentDialog_PrimaryButtonClick(ContentDialog sender, ContentDialogButtonClickEventArgs args)
{
var deferral = args.GetDeferral();
args.Cancel = false;
NewEntry = new PasswordEntry
{
Id = -1,
Domain = Domain.Text,
Username = Username.Text,
PasswordLength = SettingsProvider.DefaultPasswordLength,
UseCapitalLetters = SettingsProvider.IncludeCapitalsByDefault,
UseDigits = SettingsProvider.IncludeDigitsByDefault,
UseSpecialCharacters = SettingsProvider.IncludeSpecialsByDefault,
};
PasswordStorage.Entries.Add(NewEntry);
deferral.Complete();
}
public EditViewModel(IMessenger messenger)
{
_messenger = messenger;
if (IsInDesignMode)
{
EditedEntry = new PasswordEntry
{
Domain = "company.com",
PasswordLength = 15,
Tag = "Some tag",
TagAsCurrentMonth = false,
UseCapitalLetters = true,
UseDigits = true,
UseSpecialCharacters = false,
Username = "******"
};
}
SaveChangesCommand = new RelayCommand(SaveChanges);
CancelCommand = new RelayCommand(Cancel);
}
public DetailsViewModel(IMessenger messenger)
{
_messenger = messenger;
if (IsInDesignMode)
{
Entry = new PasswordEntry
{
Domain = "company.com",
PasswordLength = 15,
Tag = "Some tag",
TagAsCurrentMonth = false,
UseCapitalLetters = true,
UseDigits = true,
UseSpecialCharacters = false,
Username = "******"
};
}
GenerateCommand = new RelayCommand(Generate);
EditCommand = new RelayCommand(() => _messenger.Send(new EditEntryMessage(Entry)));
DeleteCommand = new RelayCommand(Delete);
}
public DeleteEntryMessage(PasswordEntry entry)
{
Entry = entry;
}
public ShowEntryDetailsMessage(PasswordEntry entry)
{
Entry = entry;
}
public MoveEntryToDirectoryMessage(PasswordEntry entry, string destination)
{
Entry = entry;
Destination = destination;
}
public static string Generate(PasswordEntry entry)
{
var entryStringified = entry.Domain + entry.Username + (entry.TagAsCurrentMonth
? DateTime.Now.ToString("yyyy-MM-dd")
: entry.Tag);
var entryBytes = Encoding.UTF8.GetBytes(entryStringified);
var secretBytes = Encoding.UTF8.GetBytes(SettingsProvider.SecretSequence);
var resultBytes = new byte[entryBytes.Length + secretBytes.Length];
for (int i = 0; i < entryBytes.Length; i++)
{
resultBytes[i] = (byte)((entryBytes[i % entryBytes.Length] * i * secretBytes[Math.Abs(secretBytes.Length - i) % secretBytes.Length]) % 256);
}
for (int i = entryBytes.Length; i < resultBytes.Length; i++)
{
resultBytes[i] = (byte)((entryBytes[i * secretBytes[i % secretBytes.Length] % entryBytes.Length] * secretBytes[entryBytes[i % entryBytes.Length] % secretBytes.Length]) % 256);
}
var hap = HashAlgorithmProvider.OpenAlgorithm(HashAlgorithmNames.Sha512);
var ch = hap.CreateHash();
ch.Append(resultBytes.AsBuffer());
var hash = ch.GetValueAndReset().ToArray();
var hashCharacters = new List<char>();
var pointer = 0;
if (entry.UseDigits)
for (int i = 0; i < 12; i++)
{
hashCharacters.Add(Digits[hash[pointer] * i % Digits.Length]);
pointer++;
}
if (entry.UseSpecialCharacters)
for (int i = 0; i < 12; i++)
{
hashCharacters.Add(Specials[hash[pointer] * i % Specials.Length]);
pointer++;
}
if (entry.UseCapitalLetters)
for (int i = 0; i < 20; i++)
{
hashCharacters.Add(CapitalLetters[hash[pointer] * i % CapitalLetters.Length]);
pointer++;
}
for (int i = 0; i < 20; i++)
{
hashCharacters.Add(LowerLetters[hash[pointer] * i % LowerLetters.Length]);
pointer++;
}
var passwordChars = new List<char>(entry.PasswordLength);
for (int i = 0; passwordChars.Count < entry.PasswordLength; i += 13)
{
passwordChars.Add(hashCharacters[i % hashCharacters.Count]);
}
var threshold = Math.Sqrt(Enumerable.Sum(hash, x => (double)x));
return string.Join("", passwordChars.OrderBy(x => x > threshold));
}
public EditEntryMessage(PasswordEntry entry)
{
Entry = entry;
}
private static void RemoveItem(PasswordEntry item)
{
using (var connection = NewConnection())
{
connection.CreateTable<PasswordEntry>();
connection.Delete<PasswordEntry>(item.Id);
connection.Commit();
}
}
