I know password files aren't meant to be decrypted but this is a diary - without encryption it would be a case of would you want everyone being able to see your list of passwords?
All I need to do is encrypt/decrypt the FILE as authentication is met. Unfortunately I feel an experienced programmer could crack this... I have heard that Blowfish would do the job but i'm not sure.
I looked the site you directed me to but I got a bit confused, will try to figure it out when I have some time.