Let K be a fixed element of Z26, and define the fixed permutation over Z26 as 012 34 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 23 13 24 0 7 15 14 6 25 16 22 1 19 18 5 1 17 2 21 12 20 4 10 9 3 8 = Consider the stream cipher with the key stream elem ent zi e Z26, where zi = (K +-1) mod 26. Encryption and e, (x) = (m(x) + z) mod 26, d, (y) = (-1(y-z) mod 26). decryption using are done as follows: Cprogram streamcipher to decrypt the following ciphertext which was enerypted by the above stream cipher: WRTCNRLDSAFARWK KLXRMCBKGRCCURR Your program should use brute force attack and stop when the user is satisfied with the result. (submit the plaintert, your code, and instructions on hoy to test it) Let K be a fixed element of Z26, and define the fixed permutation over Z26 as 012 34 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 23 13 24 0 7 15 14 6 25 16 22 1 19 18 5 1 17 2 21 12 20 4 10 9 3 8 = Consider the stream cipher with the key stream elem ent zi e Z26, where zi = (K +-1) mod 26. Encryption and e, (x) = (m(x) + z) mod 26, d, (y) = (-1(y-z) mod 26). decryption using are done as follows: Cprogram streamcipher to decrypt the following ciphertext which was enerypted by the above stream cipher: WRTCNRLDSAFARWK KLXRMCBKGRCCURR Your program should use brute force attack and stop when the user is satisfied with the result. (submit the plaintert, your code, and instructions on hoy to test it)