public byte[] DecompressPacket(byte[] Payload, int Offset)
{
MemoryStream ms = new MemoryStream(Payload.GetUpperBound(0) - Offset);
ms.Write(Payload, Offset, Payload.GetUpperBound(0) - Offset);
ms.Seek(0, System.IO.SeekOrigin.Begin);
ZInputStream zs = new ZInputStream(ms);
int UncompressedSize;
byte[] Uncompressed = new byte[4096];
try
{
UncompressedSize = zs.read(Uncompressed, 0, 4096);
}
catch
{
if (DEBUG)
{
Debug("DECOMPRESSION FAILURE");
}
Array.Copy(Payload, Offset - 1, Uncompressed, 0, Payload.Length - (Offset - 1));
UncompressedSize = Payload.Length - (Offset - 1);
}
zs.Close();
zs.Dispose();
ms.Close();
ms.Dispose();
Array.Resize(ref Uncompressed, UncompressedSize);
return(Uncompressed);
}
/**
* Return the uncompressed content.
*
* @return the uncompressed content
* @throws CmsException if there is an exception uncompressing the data.
*/
public byte[] GetContent()
{
CompressedData comData = CompressedData.GetInstance(contentInfo.Content);
ContentInfo content = comData.EncapContentInfo;
Asn1OctetString bytes = (Asn1OctetString)content.Content;
ZInputStream zIn = new ZInputStream(bytes.GetOctetStream());
try
{
return(CmsUtilities.StreamToByteArray(zIn));
}
catch (IOException e)
{
throw new CmsException("exception reading compressed stream.", e);
}
finally
{
zIn.Dispose();
}
}