public bool HideFileSystem(string imagePath, string fileSystemData, string password = "", StorageMethod storageMethod = StorageMethod.EOF)
{
StegoProvider prov;
if (storageMethod == StorageMethod.EOF)
{
prov = Providers.XOREOF;
}
else
{
prov = Providers.XORIDAT;
}
provider = (SteganographyProvider)Activator.CreateInstance(prov.ProviderType, imagePath, false);
provider.SetPassword(password, false);
if (Imprint(DataType.FileSystem, fileSystemData))
{
using (FileStream fs = File.Open(imagePath, FileMode.Create, FileAccess.Write, FileShare.Read))
provider.WriteToStream(fs);
return(true);
}
return(false);
}
public bool HideText(string imagePath, string hideText, string password = "", int fileSlot = 0)
{
StegoProvider prov;
if (fileSlot == 0)
{
prov = Providers.XOREOF;
}
else
{
prov = Providers.XORIDAT;
}
provider = (SteganographyProvider)Activator.CreateInstance(prov.ProviderType, imagePath, false);
provider.SetPassword(password, false);
if (Imprint(DataType.Text, hideText))
{
using (FileStream fs = File.Open(imagePath, FileMode.Create, FileAccess.Write, FileShare.Read))
provider.WriteToStream(fs);
return(true);
}
return(false);
}
public (DataType t, object data) ReadData(StorageMethod storageSlot)
{
DataType t = DataType.None;
object data = null;
using (MemoryStream stream = new MemoryStream())
{
pngOriginal.WriteToStream(stream, true, true);
stream.Seek(0, SeekOrigin.Begin);
}
bool hasEOF = false;
int IDATs = 0;
foreach (PNGChunk chunk in pngOriginal.Chunks)
{
if (chunk.Name == "_EOF")
{
hasEOF = true;
}
if (chunk.Name == "IDAT")
{
IDATs++;
}
}
StegoProvider pr = Providers.XOREOF;
if (storageSlot == StorageMethod.IDAT)
{
pr = Providers.XORIDAT;
}
if (!hasEOF && storageSlot == StorageMethod.EOF)
{
provider = null; Logger.Log($"There is no data in {storageSlot.ToString()}", Logger.LOG_LEVEL.ERR);
}
else if (IDATs <= 1)
{
provider = null; Logger.Log($"There is no data in {storageSlot.ToString()}", Logger.LOG_LEVEL.ERR);
}
else
{
try
{
provider = (SteganographyProvider)Activator.CreateInstance(pr.ProviderType, pngOriginal, true);
provider.SetPassword(password);
t = provider.Extract(out data);
return(t, data);
}
catch (InvalidPasswordException)
{
Logger.Log("The password was incorrect.", Logger.LOG_LEVEL.ERR);
}
}
return(DataType.None, null);
}
