A stream cipher is used to encrypt. The plain text m_1 is 10101010, the pseudo random number k is: 01101011. What is the cipher text c_1? Show the detail mathematics If another plain text m_2 (for example, 11100010) is encrypted with the same pseudo random number k and generate cipher text c_2, what useful information about m_1 and m_2 can you extract from c_1 and c_2? Show the detail mathematics