1. Use the 3-bit block cipher in the table below to answer the following. Suppose the plaintext is m= 100010010. (a) Use the block cipher without cipher-block chaining (CBC) to encrypt the message. What is the resulting ciphertext? (6) Suppose Trudy intercepts the ciphertext. Further suppose she knows that the text was encrypted with a 3-bit block cipher without CBC, but she does not know the specific cipher. What can she determine about the original message? (c) Now use the block cipher with CBC to encrypt the message, using initialization vector 110. What is the resulting ciphertext? input output input output 000 001 100 010 001 100 101 110 010 111 110 011 011000111 101 1. Use the 3-bit block cipher in the table below to answer the following. Suppose the plaintext is m= 100010010. (a) Use the block cipher without cipher-block chaining (CBC) to encrypt the message. What is the resulting ciphertext? (6) Suppose Trudy intercepts the ciphertext. Further suppose she knows that the text was encrypted with a 3-bit block cipher without CBC, but she does not know the specific cipher. What can she determine about the original message? (c) Now use the block cipher with CBC to encrypt the message, using initialization vector 110. What is the resulting ciphertext? input output input output 000 001 100 010 001 100 101 110 010 111 110 011 011000111 101