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Question 1) De-cipher the following message using Vigenere Cipher analysis tool You need to state the key length and key itself and the message and compute the IC of period you selected. Show your work when calculating IC (i.e. the letters, number of letters, and the frequency of each one)
LHUK UYRGWE AN GU KHAGN NZ DOIWL VYG AF LBR YSMQ KBHZLED KJRKV AE LBR TGTQ 4 SHQ OKO AJ FBCWR UKI NZ LHQ KUZK KHGLNRX KPQWX.
LUM AXJYNJQ HMNY BOK OZ LBR MSLMPS AULE 4 MFX F6 ZG CAMHGKJAOL BNTVSTSER, HMT FZUG YLIXD FRGNEE LBR HDUD UUHYWD NQ GBBANS GVWKUTE – S JEUTLQE GVZAGMLYQ HQ FMKNRX KHGLNRX KPQWXF.
ZZE IAXRX SPQJNHXW AXKI YKLS KGO FNGOF KIZK AMBJYFYAVQ EUPXG STGNF CATT S MUGDLAO XRVLH AX ZVKDD, NMN VZ EAK AGCGUT FZY BBWRMDF FNSRBFYFY GF FZY PGEEDS.
UAULHQJ JNXL OR LBNZ WQGSNVUF IE LBR YGFFOUEK HRAUYFYANS, KBNXHEZAHT GFD OGFBX JEZVYEOFG. ESGFAFG TSM OKWN WFIJT LO PAUY AH BALB, OAL IFK GBYL RQUYAZ VEHAWRY KHAO U GXWNP LIJGJDE DYFY HRAUYFYWD, YGLR TSTGJUY-RGOWAHT OEASWM. JOLH FZY TGDAJQ M6 FGESGFA UGK CAFNVTMEP GH GNST BSNU CZIOZ CF HGTT YIBJ SNP TUQ – G LRMAHRJ WYQ HLRLWRE LBR TSTGJUY OEASWM, OAL TA S WNYMAX GVFKJVQJ “YKZJA EZUEVWNUFA” NTV “DQLUVR” SRQ LBR YSMQ LBVTY.
IR QIH NSVQ KIZK WXBWLVKFCQ OCGN UAYWLNY, KAYKOAM YAXSRL Y6’K PDG GBJW LQLM LUM TGFY GNW IYSAR AKIZY MYOVEDK – GNTMAX XIPAK, EJHIFAJE OGGCKFSMLCBT, SS IWFY GK HUYBYOYHFK/MUGVOIK, VHZ MNRGLGAFAFWFL, ZZEDW CF TG STSLCTWSE KFVJWR.
Question 2) Using statistical analysis only on Caesar cipher, decrypt this cipher. Show your work in detail. Do not use brute force
Question 3) Alice wants to send BOB a message and hide it from her kids. You have been selected to advise her on how to do that. The message is
Get ice cream
Your job is the use RSA and pick public and private keys (diffrent from the book) to make sure the message is authentic and confidential
You need to pick the p,q and everything else for Bob and Alice
Show the message after applying Ek(m) and de-cihper with your Dk(C). Show your work