Hi shashi2713,

Welcome to the Monastery. Please read the PerlMonks FAQ and How do I post a question effectively? if you have not already done so. Was there a particular encryption algorithm you want to use to encrypt the file in question? CPAN has many modules to help you achieve this depending on what your exact requirements are. Super Search is also a useful feature of this site, this recent post may be of interest to you.

Hope this helps.

Martin