3a Suppose a 16-year old releases automatic-dialing software that will flood the

Question

3a

Suppose a 16-year old releases automatic-dialing software that will flood the emergency 911 telephone system with calls, knocking out service. He claims he was experimenting with the software program to purchase a large number of tickets be prosecuted for exceeding authorized access to the site? Why or why not?

3b

Identify several issues raised by this scenario:

Someone in California posts on amazon.com a very critical review of a new book written by a British author. The review says the writer is an incompetent fool without a single good idea; he can’t even express the bad ideas clearly and probably did not graduate from grade school; and he should be washing dishes instead of wasting the reader’s time. The author files a lawsuit for libel in England against the reviewer and Amaon.

3c

I have a message M=32 that I want to encrypt. Given the two prime numbers, p=5 and q=11, find the public and private key. Then encrypt the message. When using brute force search to determine the keys, just pick the first one (lowest number) that works.

Explanation / Answer

Solution:

3a)

In such a case the appropriate penalty should be to make him sit in 911 and make him attend the calls for a week. This should be done under supervision. Also after completion of this term, he should be encouraged to utilize his skills in the positive direction.

The above punishment will also help him understand the seriousness of emergency call.

3b)

n such a case the appropriate penalty should be to make him sit in 911 and make him attend the calls for a week. This should be done under supervision. Also after completion of this term, he should be encouraged to utilize his skills in the positive direction.

The above punishment will also help him understand the seriousness of emergency call.

3c)

given p=5,q=11 and m=32

n=p*q

=55

z=(p-1)*(q-1)

=40

choose d,e so that d*e=1+(k*z) k is positive integer.

let e=3. d=27 so d*e=1+(k*z)

encryption:

The cipher text is c= me mod z

=323 mod 40

=8

The encrypted text is c= 8

decryption:

The plain text or message is m= ce mod z

=827 mod 40

=32

The decrypted text is 32.

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