Decrypt the message to get the original plaintext

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Reference no: EM131311160

1. Use the additive cipher with k = 10 to encrypt the plaintext "book". Then decrypt the message to get the original plaintext.

2. Encrypt the message "this is an exercise" using additive cipher with key = 20. Ignore the space between words. Decrypt the message to get the original plaintext.

Reference no: EM131311160

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