Digital Signing of TIFF file

Hi All,

I want to digitally sign a TIFF file using visual studio (VB.net/ASP.net/C#). I do not want to convert the TIFF image to byte array and then sign on the the byte content. I want to directly sign on TIFF image using a digital certificate.  I do not want to depend on any third party API. Can any one help me to achieve this?

Warm regards and Thanks in advance

Aliyas