The following cipher text was obtained by adding (mod 2) as the output of a LFSR: 0110101010011000101010101010100100010110. You know that the plaintext starts as follows: (a) Find the beginning characters of the LFSR key stream. (b) Determine the length of the recurrence m by the method described in class. (c) Find the coefficients of the recurrence. (d) Find the entire plaintext.. The following cipher text was obtained by adding (mod 2) as the output of a LFSR: 0110101010011000101010101010100100010110. You know that the plaintext starts as follows: (a) Find the beginning characters of the LFSR key stream. (b) Determine the length of the recurrence m by the method described in class. (c) Find the coefficients of the recurrence. (d) Find the entire plaintext