how to encrypt password before writing to txt file and decrypt when needed to use it

Question

i am storing the connection string provided by the user at setup time to a txt file

its a website

by setup i mean first access of the admin to the site

well

its working

but i need some code which can encrypt the password text and store to file so any one having access to the system can not understand the passward,

also please show decrpytion

thank u

Answer 1

This has been answered before...

http://stackoverflow.com/questions/202011/encrypt-decrypt-string-in-net

Answer 2

Anyone who has access to your system is able to read the connection string as long as the program is able to decrypt it without having the user enter a password.