Encryption/Decryption on string

Tuesday, July 8, 2014

I am very new to encryption and I would really appreciate your input on this puzzle as I am stuck.

The puzzle:

blinker defined( '_JEXEC' ) or die( 'Restricted access' ); terminal:~ A fantastic internship opportunity...

-bash: Solve this puzzle If you’re interested then 21613@23151811.co.za = fun@work.co.za which will lead you to 171225.13916.co.za

terminal:~ what is the answer$

Please note I will not be entering with the answer I am just so interested as to how to solve this.