![]() ![]() Key: 21 Ciphertext: AROSEBTYEAENWYSOSTAHLELRENMASMDELWUO Key: 20 Ciphertext: AROSTEEBEYWASNSYAOLTLHEEMRSNDALMUEOW Key: 19 Ciphertext: ARTOESEEWBSYSAANLYLOETMHSEDRLNUAOMWE Key: 18 Ciphertext: AERETOWSSESBAYLALNEYMOSTDHLEURONWAEM Key: 17 Ciphertext: AWRSEOSESATELBLYEAMNSYDOLTUHOEWRENMA Key: 16 Ciphertext: ASRASOLWSLEEEEBMTYSADNLYUOOTWHEEMRAN Key: 15 Ciphertext: ALRLAOESSMSESWBDEYLEAUTNOYWOETMHAENR Key: 14 Ciphertext: AERMLOSLSDAELSBUSYOWAWENEEYMTOATNHRE Key: 13 Ciphertext: ASRDMOLESULEOLBWAYESAMSNAWYNEORETETH Key: 12 Ciphertext: ALRUDOOSSWMEEEBMLYALANANRSYESTOHWETE Key: 11 Ciphertext: AORWUOELSMDEASBNMTYREEAELENHLWYTASOS Key: 10 Ciphertext: AERMWTOAOESNUEERLWBEDSYHSSATMANOELYL Key: 09 Ciphertext: AAWRNMSEORESESEWATEHOLBTULYOLEAYDMNS Key: 08 Ciphertext: ARLRENLAOHAESSTMMSEOESWBYWDEYNOLEAUT Key: 07 Ciphertext: AHSRTEDMTOORLEESYNULEENAOLWBAMWASYES Key: 06 Ciphertext: AOOSRYTWUASONHELLWSAEMDLEEYRASEEBNMT Key: 05 Ciphertext: ANASWRAYNMDMSEOYORELESESBTEWULATEHOL Key: 04 Ciphertext: AYHESSRBATEMWDMASTOENORAOLELWESYNULE Key: 03 Ciphertext: AENHAOSLWRSBAYTENMWUDMLASETOYORELESE Key: 02 Ciphertext: AOEYNOHRAEOLSELSWERSBAYTENMWUDMLASET Key: 01 Ciphertext: AROSEBYANYOTHERNAMEWOULDSMELLASSWEET zfill ( 2 ), "Ciphertext: ", encryptRailFence ( plaintext, i ) ) ![]() ![]() join ( result )) print ( "Key: 01 Ciphertext: ", plaintext ) for i in range ( 2, len ( plaintext ) 1 ): print ( "Key:", str ( i ). upper () mykey = 2 # Python3 program to illustrate # Rail Fence Cipher Encryption # and Decryption # function to encrypt a message def encryptRailFence ( text, key ): # create the matrix to cipher # plain text key = rows, # length(text) = columns # filling the rail matrix # to distinguish filled # spaces from blank ones rail = for j in range ( key )] # to find the direction dir_down = False row, col = 0, 0 for i in range ( len ( text )): # check the direction of flow # reverse the direction if we've just # filled the top or bottom rail if ( row = 0 ) or ( row = key - 1 ): dir_down = not dir_down # fill the corresponding alphabet rail = text col = 1 # find the next row using # direction flag if dir_down : row = 1 else : row -= 1 # now we can construct the cipher # using the rail matrix result = for i in range ( key ): for j in range ( len ( text )): if rail != ' \n ' : result. Plaintext = 'a rose by any other name would smell as sweet' plaintext = plaintext. Linear Feedback Shift Register (LFSR) Stream Ciphersġ1. Determining the Key Length using Index of Coincidenceġ0.4. Relating Modular Arithmetic to the Caesar CipherĨ.4. String Operations, Methods, and FunctionsĤ.4. ![]() Terminology for Making and Breaking Codesģ.2. ![]()
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