During a TLS transaction using a different cipher specification, what role does the MAC play, and what responsibilities does it fulfill
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Q: major complaint to layered protocols. What can be done to stop copying
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During a TLS transaction using a different cipher specification, what role does the MAC play, and what responsibilities does it fulfill?
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- Design a key establishment protocol that will allow a Mutually Agreed Session key (Kabc) to be established between three entities A, B and C. This key can then be used to secure a chat between the three entities. I want you to develop your own design based on the conditions below. Note: The session key should NOT be known to the Chat Server (S) and the Chat Server (S) can only forward the encrypted messages to A, B and C and S cannot read the messages,i.e. End to end encryption/privacy is to be used between the chat parties A, B and C. The secure chat between entities A, B and C must use the Chat Server (S) and session key Kabc as below: i.e. A, B and C Do NOT communicate directly and must exchange messages through the Server S. The following conditions apply to your protocol design. 1. A, B and C Never communicate directly. Each entity (A, B, C and S) have a Public Key Certificate, ie. CA<<A>>, CA<<B>>, CA<<C>> and CA<<S>>.…The MAC is used by the change-cipher-spec transaction that is used by TLS.Design a security protocol that will allow a Mutually Agreed Session key (Kabc) to be established between three entities A, B and C. This key can then be used to secure a chat between the three entities. I want you to develop your own design based on the conditions below.Note: The session key should NOT be known to the Chat Server (S) and the Chat Server (S) can only forward the encrypted messages to A, B and C and S cannot read the messages. The secure chat between entities A, B and C must use the Chat Server (S) and session key Kabc as below: (refer image)i.e. A, B and C Do NOT communicate directly. The following conditions apply to your protocol design.1. A, B and C Never communicate directly. 2. Each entity (A, B, C and S) have a Public Key Certificate, ie. CA<<A>>, CA<<B>>, CA<<C>> and CA<<S>>. 3. The Chat Server, S, has access to all Entity Certificates that use its service and can provide these Certificate to its service users if…
- Design a security protocol that will allow a Mutually Agreed Session key (Kabc) to be established between three entities A, B and C. This key can then be used to secure a chat between the three entities. I want you to develop your own design based on the conditions below. Note: The session key should NOT be known to the Chat Server (S) and the Chat Server (S) can only forward the encrypted messages to A, B and C and S cannot read the messages. The secure chat between entities A, B and C must use the Chat Server (S) and session key Kabc as below: i.e. A, B and C Do NOT communicate directly. The following conditions apply to your protocol design. 1. A, B and C Never communicate directly. 2. Each entity (A, B, C and S) have a Public Key Certificate, ie. CA<>, CA<>, CA<> and CA<>. 3. The Chat Server, S, has access to all Entity Certificates that use its service and can provide these Certificate to its service users if requested to do so. 4. Challenge – Response…a^A stream cipher using XOR based encryption along with a key stream is to be used to secure a communications link. What is the key stream and what property must it have to ensure the link is secure?The seeming overhead of copying occurring at each tier is a major complaint to layered protocols. What can be done to stop copying?
- DNS records should be sorted by record type. Each one has to be defined precisely, with illustrative cases and explanations of why they work the way they do. Is it feasible for a web server and an internal mail server to use the same hostname?Explain why each of the following protocols should or should not be used:• Multiversion timestamp ordering • Multiversion two-phase lockingWhen a web client attempts to get access to protected resources hosted by a web server, it is important to demonstrate the step-by-step implementation of native authentication and authorization services. What are the two most persuasive arguments in favor of layered protocols and why should they be used? You need to provide specific examples to back up your point.