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Consider CBC to provide confidentiality and CBC-Residue to provide integrity verification where we use one key K1 to generate CBC encryption of a given plaintext P=P1P2...Pn to produce the corresponding ciphertext C= C1C2...Cn and another key K2 to compute the CBC-Residue R from P for integrity verification as C=CBC(K1, P) and R=CBC-Residue(K2, P) and we send C and R to the receiver. Now assume that we want to modify the above mechanism to avoid doing a complete CBC for the second time in CBC-Residue computation as follows: C=CBC(K1,P) and R=AES(K2,Cn) where AES is the encryption algorithm we use in CBC and Cn is the last block of C in CBC(K1, P). In other words, instead of doing a full CBC to produce the CBC-Residue R, we encrypt the last block of CBC (i.e., Cn) using the second key K2 and use it as the CBC-Residue value. We then send C and R to the receiver site. Would this modification make any difference from security point of view? Justify your answer.
Briefly investigate some networking technologies and Determine the names and function of numerous networking organisations designing standards
Write client and server, Java Swing application using socket connections which permits the client to specify filename to server in Textfield and server send contents of text file back to client if it exists.
Define each protocol and describe at least two data transmission technologies associated with the protocol. Include bandwidth limitations of each technology.
Compute both the unadjusted and adjusted function-point count for this system, stating carefully any assumptions you are making.
Explain why there are three MAC addresses listed in 802.11 Wireless PDUs and Compare the results of your analysis in the above step (7) with the findings of Act
Describe how and where IP datagram fragments are reassembled. Make sure to explain how fragments from multiple datagram's are sorted out and how the order of fragments is resolved for each set of fragments.
Using the netstat Program Time Required: 10 minutes Objective: Use the netstat program to view network interface and IP protocol status and statistics.
Identify which vendor(s) may be a fit for the Good Foods company, based on the company's current needs.
Why is Wi-Fi channel selection important when designing and installing a WLAN with multiple APs in an ESS? Explain.
What VLAN(s) should devices in the IP subnet be in? What type of route adds the subnet to the routing table of a Cisco device when the ip address command is issued on an interface with a state of Up/Up?
you are a network administrator in net ambit inc. the company has one external ip five servers static. one of them
For the networking report, describe the network configuration, explaining the role of each component and connection, following the diagram provided by your supervisor.
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