For my crptyography class
Playfair ciphers are fun
And if you like wasting a good few hours cause cracking codes is fun and all(not really)..cipher text:
Cz (clyhabidyq Taa, e bkatbvyws iat Wzhkruevy) vu z gyk urlzei rfcgoc
uzqxngyq yksylmyqece vzl rgo Ylcacr bplara dytkal tyhczqc. Vc vd uzuyq yh y wag
nfin zv clvxvcvma, gnvtn ga ryqep Letcxhk Ruurzd. Vc erbz qdzq mocmabb zbval
ynzek ztax faric colzb zi pfcgopu, yitpqbyih xrumyqta ltborvykd yws
calawrocvyhd. Fk davz qygqz, bvfd qydfkh fd z wyib ym z gyh rzcz am ptbat
artnyia, gnvtn fd ksylmyqece qydfkhyq nmbv ztalorvykd bvor ruo xalo zifivdyygc vk
dzvrhruo. Lgo ertegab drlzef ufyy xd $2^{64}$ uoczq yi zetn bplara (at $2^{40}$
yi bvz qarqeqlt maldfyh Cz6). Bvz qylwuvcc drevxb zv pgo dytkal ruo lwoc hz hzo
latyxoca orropnd pyw qo lzpmatxau nvcn tavcplevcz darqeqll rwoh cwob tx
zvgrwbpvmz qzeltw, oin nybpyiwqfdnvhk orropnu zla erbz vxclyrcvryr gvcw o
dfxvrel tavcplevco. Cgo ksleyq zv bvy lfcgoc md ffrlaqfdfxoce mzbp, zu vc fd vala
bvyw 2.5 cvxak zzulol rwow CT4 yw y Lzhcmdx VVfM (nvcg tzqb pwoi 2.9 dcdqld/uoca
ggoi yfrqlxahcyq nmbv bvz ECF zv GYQfDFZ ein lobpyq nmbv bvy GZQDFZ qzvrhrul).g