Let P 011011100111 be a binary plaintext and let K 0110 be a symmetric key (a. 5 points) Use the Vernam cipher to encrypt P. Show what the cyphertext is. Explain how you computed it. (b. 5 points) Decrypt the cyphen text that you obtained above, using the key K, = 0111. Show what the plaintext is. Explain how this plaintext compares to the plaintext P above