public byte[] GetDecryptedTitleKey()
{
int keyRevision = Utilities.GetMasterKeyRevision(Header.KeyGeneration);
byte[] titleKek = KeySet.TitleKeks[keyRevision].DataRo.ToArray();
var rightsId = new RightsId(Header.RightsId);
if (KeySet.ExternalKeySet.Get(rightsId, out AccessKey accessKey).IsFailure())
{
throw new MissingKeyException("Missing NCA title key.", rightsId.ToString(), KeyType.Title);
}
if (titleKek.IsZeros())
{
string keyName = $"titlekek_{keyRevision:x2}";
throw new MissingKeyException("Unable to decrypt title key.", keyName, KeyType.Common);
}
byte[] encryptedKey = accessKey.Value.ToArray();
byte[] decryptedKey = new byte[Aes.KeySize128];
Aes.DecryptEcb128(encryptedKey, decryptedKey, titleKek);
return(decryptedKey);
}
public byte[] GetDecryptedTitleKey()
{
int keyRevision = Util.GetMasterKeyRevision(Header.KeyGeneration);
byte[] titleKek = Keyset.TitleKeks[keyRevision];
var rightsId = new RightsId(Header.RightsId);
if (Keyset.ExternalKeySet.Get(rightsId, out AccessKey accessKey).IsFailure())
{
throw new MissingKeyException("Missing NCA title key.", rightsId.ToString(), KeyType.Title);
}
if (titleKek.IsEmpty())
{
string keyName = $"titlekek_{keyRevision:x2}";
throw new MissingKeyException("Unable to decrypt title key.", keyName, KeyType.Common);
}
byte[] encryptedKey = accessKey.Value.ToArray();
var decryptedKey = new byte[CryptoOld.Aes128Size];
CryptoOld.DecryptEcb(titleKek, encryptedKey, decryptedKey, CryptoOld.Aes128Size);
return(decryptedKey);
}
private void BuildChildItems(PartitionFileSystemItemBase parentItem)
{
try
{
var partitionFileSystem = parentItem.PartitionFileSystem;
var remainingEntries = new List <PartitionFileEntry>();
// First loop on *.tik files to inject title keys in KeySet
foreach (var partitionFileEntry in partitionFileSystem.Files)
{
var fileName = partitionFileEntry.Name;
if (!fileName.EndsWith(".tik", StringComparison.OrdinalIgnoreCase))
{
remainingEntries.Add(partitionFileEntry);
continue;
}
IFile file;
try
{
file = partitionFileSystem.OpenFile(partitionFileEntry, OpenMode.Read);
}
catch (Exception ex)
{
OnLoadingException(ex, parentItem);
var message = LocalizationManager.Instance.Current.Keys.LoadingError_FailedToOpenPartitionFile.SafeFormat(ex.Message);
parentItem.Errors.Add(TREE_LOADING_CATEGORY, message);
_logger.LogError(ex, message);
continue;
}
Ticket ticket;
try
{
using var asStream = file.AsStream();
ticket = new Ticket(asStream);
}
catch (Exception ex)
{
OnLoadingException(ex, parentItem);
var message = LocalizationManager.Instance.Current.Keys.LoadingError_FailedToLoadTicketFile.SafeFormat(ex.Message);
parentItem.Errors.Add(TREE_LOADING_CATEGORY, message);
_logger.LogError(ex, message);
continue;
}
var ticketItem = new TicketItem(ticket, partitionFileEntry, file, parentItem);
try
{
var rightsId = new RightsId(ticket.RightsId);
var accessKey = new AccessKey(ticket.TitleKeyBlock);
ticketItem.RightsId = rightsId;
ticketItem.AccessKey = accessKey;
if (parentItem.KeySet.ExternalKeySet.Get(rightsId, out var existingAccessKey) == Result.Success)
{
// Here RightID key is already defined
if (existingAccessKey != accessKey)
{
// Replaces the RightID key with the one defined in the ticket
parentItem.KeySet.ExternalKeySet.Remove(rightsId);
parentItem.KeySet.ExternalKeySet.Add(rightsId, accessKey).ThrowIfFailure();
_logger.LogWarning(LocalizationManager.Instance.Current.Keys.LoadingWarning_TitleIdKeyReplaced.SafeFormat(rightsId.ToString(), accessKey.ToString(), fileName, existingAccessKey));
}
else
{
_logger.LogDebug(LocalizationManager.Instance.Current.Keys.LoadingDebug_TitleIdKeyAlreadyExists.SafeFormat(rightsId.ToString(), accessKey.ToString(), fileName));
}
}
else
{
parentItem.KeySet.ExternalKeySet.Add(rightsId, accessKey).ThrowIfFailure();
_logger.LogInformation(LocalizationManager.Instance.Current.Keys.LoadingInfo_TitleIdKeySuccessfullyInjected.SafeFormat(rightsId.ToString(), accessKey.ToString(), fileName));
}
}
catch (Exception ex)
{
_logger.LogError(ex, LocalizationManager.Instance.Current.Keys.LoadingError_FailedToLoadTitleIdKey.SafeFormat(fileName, ex.Message));
}
parentItem.TicketChildItems.Add(ticketItem);
}
foreach (var partitionFileEntry in remainingEntries)
{
IFile file;
try
{
file = partitionFileSystem.OpenFile(partitionFileEntry, OpenMode.Read);
}
catch (Exception ex)
{
OnLoadingException(ex, parentItem);
var message = LocalizationManager.Instance.Current.Keys.LoadingError_FailedToOpenPartitionFile.SafeFormat(ex.Message);
parentItem.Errors.Add(TREE_LOADING_CATEGORY, message);
_logger.LogError(ex, message);
continue;
}
var fileName = partitionFileEntry.Name;
if (fileName.EndsWith(".nca", StringComparison.OrdinalIgnoreCase) || fileName.EndsWith(".ncz", StringComparison.OrdinalIgnoreCase))
{
Nca nca;
try
{
nca = new Nca(parentItem.KeySet, new FileStorage(file));
}
catch (Exception ex)
{
OnLoadingException(ex, parentItem);
var message = LocalizationManager.Instance.Current.Keys.LoadingError_FailedToLoadNcaFile.SafeFormat(ex.Message);
parentItem.Errors.Add(TREE_LOADING_CATEGORY, message);
_logger.LogError(ex, message);
continue;
}
var ncaItem = new NcaItem(nca, partitionFileEntry, file, parentItem);
BuildChildItems(ncaItem);
parentItem.NcaChildItems.Add(ncaItem);
}
else
{
var partitionFileEntryItem = new PartitionFileEntryItem(partitionFileEntry, file, parentItem);
parentItem.PartitionFileEntryChildItems.Add(partitionFileEntryItem);
}
}
}
catch (Exception ex)
{
OnLoadingException(ex, parentItem);
var message = LocalizationManager.Instance.Current.Keys.LoadingError_FailedToLoadPartitionFileSystemContent.SafeFormat(ex.Message);
parentItem.Errors.Add(TREE_LOADING_CATEGORY, message);
_logger.LogError(ex, message);
}
}