According to protocol 4.0, the scenario can be defined in terms of Bob, Alice and Trudy as follows:
The communication is done between Bob and Alice only in whom they share a secret key KAB with each other. The Trudy is an intruder who wants to get the information that is being communicated between Alice and Bob. To do so, Trudy wants Bob to initiate the communication by authenticating herself her Alice. Thus, Trudy waits for the Bob to start in-order to make the Bob authenticate himself.
Here are the steps how the communication is done between the Bob and Trudy:
Step 1: Bob starts the communication by himself to other side and waits for the reply.
Step 2: Trudy starts to disguise as Alice herself and authenticate herself to Bob.
Step 3: After looking at the reply, Bob sends the nonce key to Trudy. At this step, still Trudy does not know the KAB(R) in-order to reply to Bob.
Step 4: At this point Trudy response to the step-1 while Bob still continuing to authentication. Trudy picks the nonce for the Bob to encrypt the message with the Bob sent nonce in the Step-3.
Step 5: Now Bob completes his own authentication to himself on the other side of encrypting the nonce he sent at step 4. Where, Trudy gets the nonce key KAB( R).
Step 6: Now, Trudy completes her authentication in responding to R that is sent by Bob in step 3. At this point, Trudy has responded properly, so Bob thinks that he is communicating with Alice(Trudy).
The actual scenario with respect to above steps, the communication is done as follows:
Bob: “I am Bob”
Trudy: “I am Alice”
Bob: “R”
Trudy: “R”
Bob: “KAB (R )” – Bob completes his authentication.
Trudy: Get the KAB (R ) – Trudy complete her authentication.
Thus, the communication is started between the Bob and Trudy instead of Bob and Alice according to protocol 4.0.
Based on the information given, it should be noted that the traditional marketing techniques that can be used are:
- Billboards.
- Direct mail.
- Signage.
- Flyers.
<h3>
What is marketing?</h3>
Marketing simply means they action that is used to promote one's business and it includes marketing research and advertising.
The traditional marketing approaches used by the University in reaching out to potential students without the medium of technology include Billboards, Direct mail, Signage, and Flyers.
Learn more about marketing on:
brainly.com/question/25369230
Answer:
<u>c. public-key certificates.</u>
Explanation:
It is important to<em> note</em> that in Kerberos infrastructure, <em>tickets </em>are issued by a third party as part of the authentication process.
This authentication process corresponds most closely to that of the Public Key certificates Infrastructure since it is a third party that issues out tickets to authenticate both parties engaged in the communication over a network.
Answer:
Yes
Explanation: If the something is a site or app offering free downloads or streams of well-known movies, popular TV shows, big-league sports, and absorbing games, the hidden cost is probably malware.
<h2>Dead lock is possible in Bank Transactions</h2>
Explanation:
Let us understand the term "Dead lock"
A deadlock is a situation where whole set of process is locked, since each of the process is waiting or holding the resource of another process. Each process will be interdependent and waiting for the same resource.
Deadlock is possible during bank transaction in the following situation:
A & B are two accounts where A tries to transfer funds to B and B tries to transfer fund to A.
When both tries to transfer funds at the same time, deadlock occurs.
A deadlock can be avoided by any one of the four methods.
They are: Mutual exclusion, No preemption, circular wait, hold and wait.
