$ java CipherTester
usage: java CipherTester [-d] -kKEY

$ java CipherTester -kapple
Now I am typing in some sample text
to be encrypted using the key "apple".
It would work the same way if the key
was APPLE or Apple or any other variant
of case. Also notice that numbers (1, 9,
and so on) and punctuation and anything except
letters will stay the same.
I will finish by typing ctrl-d on the next line.
Ndl T em inamnv xy wobt demeap xemi
es bt tygrneeid jhtrg iwp oen "patlt".
Xe aojao aogz ele hpxi wpn tj twt viy
lpd EPEAP sr Peape dg lry disir kpcmaci
zj cphp. Elhd ystxrp xhpi yymqtcw (1, 9,
acs ds oc) pyh pjcnxupitsn pco ennismnv tigeei
wititcw wxaw wtpn ele hpxi.
I lxwp fxctwh qn ecpxcr gtga-o sn iwp remi wmnt.

$ java CipherTester -kstuff < short.txt
"Txcsl spuwj al gtww bgutjmusy laus gwbhl xetly"

Uzbf Ofudmts. Ktwwjv Aituk: ljnwamofq dxmxtfl
ik f ztlibghx bfjkctw. Zrjjwahh Gtgdm, 1995.

$ java CipherTester -kstuff < short.txt > short-stuff.txt

$ java CipherTester -kstuff -d < short-stuff.txt
"Being aware is more important than being smart"

Phil Jackson. Sacred Hoops: spiritual lessons
of a hardwood warrior. Hyperion Books, 1995.