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Citrus2011 [14]
3 years ago
9

1 Suppose Alice, Bob, and Carol want to use secret key technology to authenticate each other. If they all used the same secret k

ey K, then Bob could impersonate Carol to Alice (actually any of the three can impersonate the other to the third). Suppose instead that each had their own secret key, so Alice uses KA, Bob uses KB and Carol Uses KC. This means that each one to prove his or her identity responds to a challenge with a function of his or her secret key and the challenge. Is this more secure than having them all use the same secret key K?
Engineering
1 answer:
Dmitry [639]3 years ago
6 0

Answer:

Explained

Explanation:

Alice need to know the secret key of carol to verify the carol's answer to Alice challenges.

Similarly it needs the secret key of Bob to verify bob's answer  to Alice challenge (actually any of the three need others secret key for verify answer to challenge).

So, Bob could impersonate Carol to Alice as he should know the secret key of Carol to answer Carol's challenge. Hence it is no more secure than having all use the same secret key.

So, it is no more secure than having them all use the same secret key K.

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Nikolay [14]

Answer:

Aluminum

Explanation:

The best material to use when creating an electric fence would be Aluminum. Aluminum wiring is incredibly durable and can be easily obtained. Since aluminum is a non-magnetic metal its conducting capabilities far exceed other metallic options in the market and is also why companies choose aluminum for their high tension cable wiring. Aside from being more expensive than other feasible options its durability and conducting capabilities make it easily the best option.

7 0
2 years ago
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What do we need to do to get CO2 emissions all the way to zero?
Svetlanka [38]

Answer:

A key element is powering economies with clean energy, replacing polluting coal - and gas and oil-fired power stations - with renewable energy sources, such as wind or solar farms. This would dramatically reduce carbon emissions. Plus, renewable energy is now not only cleaner, but often cheaper than fossil fuels

Explanation:

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3 0
2 years ago
What is clearance? What is backlash? What is interference? Explain briefly.
Anton [14]

Explanation:

Clearance:

For easy matching  and dis matching  of  hole and  shaft we use size of hole little bit more than the size of shaft and this difference in size is called clearance.

Backlash:

  It is the clearance between the two mating gear to avoids failure of gears.Actually when temperature of gears increases then at the same time the size of gear also increases ,due this there is a possibility foe jamming of gears so to avoids this backlash is provides.

Interference:

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5 0
3 years ago
PLEASE QUICK!!! what phrase describes an ad hominem fallacy?
Igoryamba

Answer:

personal attack

Explanation:

it is personal attack

5 0
2 years ago
Two flat plates, separated by a space of 4 mm, are moving relative to each other at a velocity of 5 m/sec. The space between the
xenn [34]

Answer:

0.008

Explanation:

From the question, the parameters given are:

Velocity V = 5 m/s

Pressure = 10 pa

But pressure = F/A

10 = F/A

F = 10A

Substitute all the parameters into the formula below

Coefficient of viscosity (η) = F × r /[AV]

Where

F = tangential force,

r = distance between layers,

A = Area, and

V = velocity

(η) = 10A × 0.004 /[A × 5]

The A will cancel out

(η) = 10 × 0.004 /[5]

(η) = 0.04 /5

(η) = 0.008

Therefore, the coefficient of viscosity of the fluid is 0.008

5 0
3 years ago
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