Question: by using Vigenere encrypt method, calculate the cipher text of the plaintext POST by using the key= EASIER ? What is the different between mono

by using Vigenere encrypt method, calculate the cipher text of the

by using Vigenere encrypt method, calculate the cipher text of the plaintext "POST" by using the key= "EASIER" ? What is the different between mono cipher and poly cipher? Decryption the message p= "SWFRCP" using Affine cipher, given key a=5,b=8 ? Encryption the following message p= "Top secret" using caeser cipher, given key= 4 ? Computer security issue

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