Ili Open with Google Docs Part V: From the material that we discussed about the public key certification, answ the following questions in details (out of 12): 1. The authentication that goes over the network must be done solely on the basis of messages and data exchanged as part of an authentication protocol. One authentication approach is to use an encrypted secret key password. a. Explain why that the communication with this authentication is not fully safe. b. Explain in details the solution suggested for this, i.e., discuss the improved authentication approach 2. Explain why that the trust is necessary in issuing certificate authority