If a bit error occurs in the transmission of a ciphertext character in 8-bit CFB mode, how far does the error propagate? How about the error propagation in 16-bit CFB mode? Assume that a 64-bit shift...

If a bit error occurs in the transmission of a ciphertext character in 8-bit CFB mode, how far does the error propagate? How about the error propagation in 16-bit CFB mode? Assume that a 64-bit shift register is used. Provide a detailed discussion of your answer.