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A Vigenere cipher with keyword length of 3 decrypts BIT to SEA . Construct the encryption lookup table and determine the keyword. i ) Encrypt
A Vigenere cipher with keyword length of decrypts BIT to SEA
Construct the encryption lookup table and determine the keyword.
i Encrypt the plaintext M:
SECURE ENVIRONMENTS
ii Decrypt the ciphertext C: KSHUITW
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