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Assume a symmetric key encryption algorithm encrypts the 4-bit plaintext 5p messages to the corresponding 4-bit ciphertext messages using a key k (See image 1).

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Assume a symmetric key encryption algorithm encrypts the 4-bit plaintext 5p messages to the corresponding 4-bit ciphertext messages using a key k (See image 1). For an input16-bit plaintext message of 0111 1001 1011 0010, what is the ciphertext if the used mode is Counter (assume any initial values used are all O's): Plaintext 0000 0001 0010 0011 0100 0101 0110 0111 Ciphertext 1110 0101 1001 0010 1111 0111 0000 1010 Plaintext 1000 1001 1010 1011 1100 1101 1110 Ciphertext 1100 0100 0110 1101 1000 1011 0011 0001 Image 1

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