Question: 1. Using the ABBA key, decrypt the word PKWDLDTB, if the Playfair cipher was used. Select ciphertext letters to show the plain text. A

1. Using the ABBA key, decrypt the word PKWDLDTB, if the Playfair

1. Using the ABBA key, decrypt the word PKWDLDTB, if the Playfair cipher was used. Select ciphertext letters to show the plain text. A B D E F G H I=J K L M N 0 ST U Q R V W X Y Z letter 1 letter 2" letter 3* letter 4 letter 5* letter 6 letter 7 2. Assign the numbers in the figure to symmetric cryptography concepts. 3 decryption" sender* secure communication channel" receiver ciphertext encryption 4 unsecure communication channel* plaintext 2 + shared key * 5 * 65 2 9 8 3 A O O O O B C OOOOOOO O O D O O O O 000 O O O E O O O O O O O O O O F O O O O O - 000 1 O O O O G O O O H O O O O O O O O O O NOOOO O OOOO O O K OOOOO O O O O O O O O O L OO O O O O O O O M O O O O O O O O O O N O O OOOOOOOOO ABOUT O O O O O P O O O O O Q OOOOOOOOO O O O O O OOO O O O O O O O O O L S OOOOOOOOO O O O T OOO O O O O O O OOO O AT * O O O OOO V O O OOO OO .OOOOOOOOO IN OOOO OOOO X O O O O Y O O 0 0 0 0 0 0 0 0 O O O O O O O O O O O O (1 of 25) WITH O O OOOOOO (2 of 25)

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