Hi,
I am writing a ifs filter driver in win2k. When filter XLS file(Excel
file), first static encrypt a XLS file ex. 1.xls.
When first read it, I successful filter it, and decrypted.
The problem is after i restart the computer, not start my filter driver,
and read 1.xls, NOT to filter it,and NOT to decrypted it, but it can be
read in the Excel.The file have just been decrypted.
It mean that after first time I read the file, the file have been
decypted.
Why? There no write operations or rename operations done to the file.
Thanks!
Jonaifu.