A foreign navy has implemented the secure communications, Ask an Expert

Engineering

A foreign navy has implemented the secure communications system where submarine commanders transmit the single 5- letter message every day. The messages may only utilize the capital (English) letters, and all the messages are equally probable. A crypto device encrypts each message into the 20 bits of the ciphertext.

a) Specify the entropy of the plaintext message?

b) State the entropy of the ciphertext message?

c) Whether this is the good cryptosystem? Why or why not?

View complete question

Computer Engineering, Engineering

Category:- Computer Engineering
Reference No.:- M9172075

Have any Question?Write your Review or question?

Related Questions in Computer Engineering

Suppose that in the fiat-shamir protocol in figure 932 we

Suppose that in the Fiat-Shamir protocol in Figure 9.32 we have N = 55 and Alice's secret is S = 9. What is v? Suppose Alice chooses r = 10. What does Alice send in the first message? What does Alice send in the third me ...

If the probability that an individual suffers from a bad

If the probability that an individual suffers from a bad reaction from an injection of a given serum is 0.001, determine the probability that out of 2000 individuals (a) exactly 3, (b) more than 2 individuals will suffer ...

Answer the question given belowwhat is the relationship

Answer the question given below What is the relationship between a context diagram and diagram 0, and which symbol is not used in a context diagram? The response must be typed, single spaced, must be in times new roman f ...

Question what system design methodologies and techniques

Question : What system design methodologies and techniques will you use? What potential risks do you see that may prevent successful completion of your solution design? The response must be typed, single spaced, must be ...

Suppose that you have a singly-linked list l containing the

Suppose that you have a singly-linked list L containing the sequence of numbers (1,2,3,4,5,6,7,8,9). Suppose further that you have an initially empty stack S. i) Give a pseudo-code description of a method that uses only ...

Command to mail only the process id of running java program

Command to mail only the process ID of running Java program test to the email address (single line Unix)

Scenario upon logging into the centos7 server you notice

Scenario: Upon logging into the CentOS7 server you notice that the system seems sluggish. You suspect that a runaway process is causing the problem, so you open the top utility and notice that there are numerous "cat bom ...

Do a search for how to write a for-loop in r practice some

Do a search for how to write a for-loop in R. Practice some simple examples from the internet. Then use a for-loop to calculate the alternating sum of the first 100,000 digits of pi. That is, calculate the sum 3 - 1 + 4 ...

Here is a series of addresses in hexadecimal20w 3cr 10r 16w

Here is a series of addresses in hexadecimal: 20(w), 3C(r), 10(r), 16(w), 20(r), 04(w), 28(r), 6(r), 10(w), 17(w) Assume a LRU replacement algorithm. Draw each of the following caches as it would appear at the end of the ...

Select one of the discussion topics and respond begin your

Select one of the discussion topics and respond. Begin your response by indicating which question you chose. Discussion topics: Section 1 Should the government set a maximum wage? Why or why not? Section 2 Most people be ...

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Computer Engineering Expert