The target is to decrypt the following ciphertext to the plaintext(simple test is provide), the possible key is length 12 from 0-25:
plaintext_test = "THEWORLDISNO" (this is a simple test with
answer)
key_test = [3,9,3,9,3,9,3,9,3,9,3,9]
ciphertext_test = 'HHCAOLNVMOFC'
plaintext_known =
"TOMORROWNEVERDIESFORYOUREYESONLYONHERMAJESTYSSECRETSERVICEIN"
ciphertext_known =
'RSMYFLKOBITSFNYIMJKHKECFSGKUKTBWQHPSFKWDSWZWYSQAFERUSLFKSIGV'
ciphertext_960_english =
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
ciphertext_96_english =
'ENEXUEAWTBSAFCOHCTEVDENWRYCWBUDKDYSBTIXLPWXIIWVDENSIHVSZDENWANXAGYSZAGVITZEVBMGPURIBSKEDMDOASLJW'
ciphertext_960_unknown =
'LGBZAQBIVUKHADCROFBIKAKOPCUESDKDMOEWHCLWSUBYZPAOJFOKXUAJVAPPOCEJLAHZCNLIKEYJCQSLUZOVSCLZUDXVCNUIVKYJBGHSNHOVRTYJXAWSUHOUVCJECZKVLOMEAPAJZUSIJAXVABDMURGVHWPPUESUALZIVIOINEEVCQSLUHEQVBOJKATYZRAIQCLJGAHYBUBISBUWLJCCBUAORCEFBAAJBAWINBEJZGGRUHAIVWOTOPTIZOEHHOJUONBWWRAEKCBOAQDIHVKSGEUEBZSIWUOXYGXFAIPFONMAVINEBQTCOEJGETOJSDBYAFCEQOSGUDESLMOUAHLKBZIYWMOVKQJGUYGTZWPPQOSGUDWKCPAIVONEBABDNUPOSBXEANXIPSBRUWOVUURSUDRANAYJZQTRHUKXPCAJZHULWBSXROBWKFSZCNUAVFBWPLSLYNAWHJHKNQTAUMEIVFEECIPTOMEINFOGQEHSYMJAPAEIAGDSUTOPAMVWFNEINHOVAEEFLGKLUNFIYGGXUDULXOONABAJZJCCWKXLUMSWSIPCANINABXMUFULFUENIGTVCLUZLOEHSEUEHQSLUNFIYGGXIQTNVUJAVFEUOLSLKSPJAPOVHAFYCDJIIGPKHQUWKAMINCBECLGYVAMKSMCJGANILOHIYYOKHTUYVUIQZCJBUTUSWAJAVQREHUSNUDOEIPXMLQEIHKBIPQDEVQCZCUHBSBYFUWGLLDOTABXRUZSLOWEBIQSYBUBYKUMIETCGUWUSWDOMACMEBZSTUMHKYMOHZGJRUHOXJVOJZAHNVUQIAKOJZNKWWNOOGEUECVUELHOOGIGKRQWQOIMIZCSWSLTIWTSANMDECAEIFOMKJQLUWNNIHUYASCSVXDGEWXSVJQFTOGZZUDCXIJYVAEHILICEAPOTOGZTMKKGYQLERATQUCKIETYCSQWYKULG'
ciphertext_96_unknown =
'LIUYQPGWNFUCJHDORXSCUMZOWVNWTSEQMIUXKVZWBAUPAKIJDEQBAPELSPSSFLABAPGWNFFCQJVTORHAXCHCGLRYBS'
code is here:
alphabet="ABCDEFGHIJKLMNOPQRSTUVWXYZ"
def my_encrypt(plaintext, key):
ciphertext=[]
invmulttext=[]
vigtext=[]
for i in range(len(plaintext)):
place_alpha= alphabet.find(plaintext[i])
invmult_place= (place_alpha*(key[i%12]^(-1)))%26
invmulttext.append(alphabet[invmult_place])
place_inalpha = alphabet.find(invmulttext[i])
vig_place = (place_inalpha + key[(i+1)%12])%26
vigtext.append(alphabet[vig_place])
alpha_place = alphabet.find(vigtext[i])
shifted_place = (alpha_place + key[1]) % 26
ciphertext.append(alphabet[shifted_place])
return "". join(ciphertext)
def my_decrypt(ciphertext,key):
withoutshift=[]
withoutvig=[]
plaintext=[]
for i in range(len(ciphertext)):
place_alpha = alphabet.find(ciphertext[i])
unshifted_place = (place_alpha - key[1]) % 26
withoutshift.append(alphabet[unshifted_place])
placein_alpha = alphabet.find(withoutshift[i])
vigless_place = (placein_alpha - key[(i+1)% 12])%26
withoutvig.append(alphabet[vigless_place])
mult_alpha= alphabet.find(withoutvig[i])
mult_place= (mult_alpha*key[i%12])%26
plaintext.append(alphabet[mult_place])
return "". join(plaintext)
Hi , your question is not clear . You have not given any key and what text need to be decrypted. Please explain further.
The target is to decrypt the following ciphertext to the plaintext(simple test is provide), the possible...
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