This problem explores the use of a one-time pad version of the Vigenère cipher. In thisscheme, the key is a stream of random numbers between 0 and 26. For example, if the key is 319 5 . . . , then the first letter of plaintext is encrypted with a shift of 3 letters, the second with ashift of 19 letters, the third with a shift of 5 letters, and so on. a) Encrypt the plaintext sendmoremoney with the key stream9 0 1 7 23 15 21 14 11 11 2 8 9b) Using the ciphertext produced in part (a), find a key so that the cipher text decrypts to theplaintext cashnotneeded