CS 472

Assignment #1

Due Midnight, Friday  Feb. 8, 2013

This following two cipher files: file1.cipher

corresponds to  to the following palin English text file: file1.txt

The cipher file is produced using some of the simple encryption techniques discussed in class.

You are required to find the plain English file: file1.txt

Describe what you have done to produce these two files.

 

file1.cipher:

AX QGM ZSNW YGL S EWKKSYW WFUJQHLWV MKAFY LZW KMTKLALMLAGF UAHZWJ
LZSL QGM OSFL LG UJSUC, QGM USF MKW XJWIMWFUQ SFSDQKAK.
AF GLZWJ OGJVK, AX LZW KWFVWJ ZSK LJAWV LG VAKYMAKW S DWLLWJ TQ
JWHDSUAFY OALZ S VAXXWJWFL DWLLWJ, QGM USF KLADD JWUGYFAKW LZW
GJAYAFSD DWLLWJ TWUSMKW LZW XJWIMWFUQ UZSJSULWJAKLAUK GX LZW
GJAYAFSD DWLLWJ OADD TW HSKKWV GF LG LZW FWO DWLLWJK.
LG SHHDQ XJWIMWFUQ SFSDQKAK, QGM OADD FWWV LG CFGO LZW XJWIMWFUQ
GX WNWJQ DWLLWJ AF LZW WFYDAKZ SDHZSTWL, GJ LZW XJWIMWFUQ GX
DWLLWJK AF OZAUZWNWJ DSFYMSYW LZW KWFVWJ AK MKAFY.
TWDGO AK S DAKL GX SNWJSYW XJWIMWFUAWK XGJ DWLLWJK AF LZW WFYDAKZ
DSFYMSYW. KG, XGJ WPSEHDW, LZW DWLLWJ W SUUGMFLK XGJ STGML
LOWDNW HWJUWFL GX SDD DWLLWJK AF WFYDAKZ,
OZWJWSK R SUUGMFLK XGJ GFW LWFLZ GX GFW HWJ UWFL.
HDWSKW FGLW, LZWKW XJWIMWFUAWK SJW SNWJSYWK, SFV W OADD FGL
SDOSQK UGFKLALMLW LOWDNW HWJ UWFL GX SDD LZW DWLLWJK AF S LWPL,
SFV ESQ FGL WNWF TW LZW EGKL UGEEGF DWLLWJ. LZW DGFYWJ LZW EWKKSYW,
LZW EGJW DACWDQ AL AK LZSL OADD GTWQ LZW SNWJSYW VAKLJATMLAGF KZGOF
STGNW. ZGOWNWJ, LZWJW SJW WPUWHLAGFK LG LZAK JMDW. GFUW LZW XJWFUZ
SMLZGJ YWGJYWK HWJWU ESFSYWV LG OJALW S LOWFLQ HSYW TGGC
USDDWV 'DS VAKHSJALAGF' OALZGML MKAFY SFQ OGJVK UGFLSAFAFY
LZW DWLLWJ W. SESRAFYDQ, LZW TGGC OSK DSLWJ LJSFKDSLWV AFLG WFYDAKZ
TQ YADTWJL SVSAJ, SYSAF SNGAVAFY LZW MKW GX LZW DWLLWJ W.
QGM USF UZWUC LZW XJWIMWFUQ VAKLJATMLAGF GX S HAWUW GX LWPL TQ
WFLWJAFY AL AF LZW TGP TWDGO - BMKL UML SFV HSKLW S HAWUW GX LWPL,
HWJZSHK SF WKKSQ GJ KGEW LWPL XJGE LZW OWT. LZWF UDAUC GF LZW
UGMFL DWLLWJ XJWIMWFUQ TMLLGF.
AX QGM SFSDQKW BMKL GFW KWFLWFUW, ALK DWLLWJ XJWIMWFUQ VAKLJATMLAGF
HJGTSTDQ OADD FGL ESLUZ LZW TSJ UZSJL STGNW. GJ AX QGM KWDWUL LWPL
LZSL AK FGL AF WFYDAKZ, LZW ESLUZ OADD FGL TW YGGV.
TML HAUC S DGFYAKZ WFYDAKZ LWPL, SFV OZWLZWJ AL'K KZSCWKHWSJW GJ
LZW KMF, LZW ESLUZ KZGMDV TW KMJHJAKAFYDQ YGGV.