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pychu [463]
3 years ago
6

Let m be a message consisting of ℓ aes blocks (say ℓ=100). alice encrypts m using randomized counter mode and transmits the resu

lting ciphertext to bob. due to a network error, ciphertext block number ℓ/2 is corrupted during transmission. all other ciphertext blocks are transmitted and received correctly. once bob decrypts the received ciphertext, how many plaintext blocks will be corrupted?
Computers and Technology
1 answer:
guajiro [1.7K]3 years ago
8 0

Answer:

Only 1.

Explanation:

One of the merits of counter mode encryption is that the blocks can be decrypted independently of each other. There is no chaining involved, where one transmission error would propagate into all following blocks.

The "randomized" aspect doesn't have anything to do with it (I think). It applies only to the initialization vector and/or the counter start value, which has to be shared with the receiver in plaintext.

The initialization vector is a combination of a random value and a part where the counter is stored.

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Driving at slower speeds than traffic flow _____________ .
UNO [17]
The answer is B. may impede other vehicles on the road that are traveling at a normal and safe speeds
4 0
3 years ago
Assume the availability of a function is_prime. Assume a variable n has been associated with positive integer. Write the stateme
My name is Ann [436]

Answer:

def main():

   # Accept data from the user

   n=int(input('Enter the value of n:'))

   k=2;

   sum=0

   print('The list of the prime numbers are as follows:')

   # This loop runs from k to n

   while k<=n:

       # Call is_prime() method,

       # to check whether k is a prime or not

       sum=sum+is_prime(k)

       k=k+1

   print('Sum of the prime numbers:',sum)

# is_prime() Method

def is_prime(k):

   prime=0        

   i=1

   # Check k is a prime or not

   while i<=int(k):

       # Find the factors of k

       if (k % i) == 0:

           prime=prime+1

       i=i+1

   # If k as two factors

   if(prime==2):        

       print(k)

       return k;

   # If k as more than two factors

   else:        

       return 0;

# Call the main() method

main()

Explanation:

5 0
2 years ago
What is the best way to appeal to an audience in any medium ?
BigorU [14]

Answer:

I think it's D

Explanation:

The best way to appeal is with emotions

8 0
3 years ago
what is a coding process that takes a digital map feature and assigns it an attribute that serves as a unique id (tract number,
disa [49]

Answer:

Geocoding in spatial databases

Explanation:

This is a coding process that assigns a digital map feature to an attribute that serves as a unique ID (tract number, node number) or classification (soil type, zoning category).

Hope this helps!

7 0
1 year ago
Display list of numbered or lettered choices for actions
Stells [14]

Answer:

import java.util.Scanner;

public class num1 {

   public static void main(String[] args) {

       System.out.println("Age Greater than 18?");

       System.out.println("Y = \"Yes\"\t N = \"No\"");

      Scanner in = new Scanner(System.in);

      char response = in.next().charAt(0);

     switch(response) {

         case 'Y':

         case 'y':

             System.out.println("You can Visit this Website");

             break;

         case 'N':

         case 'n':

             System.out.println("You are to young to visit this website");

             break;

         default:

             System.out.println("You response is not valid");

     }

   }

}

Explanation:

  • Using Java programming language
  • create a list of options for users to input "yes" or "no"
  • Using the imported scanner class, prompt, receive and store the user's response in a char variable.
  • Use the switch statement in an expression to test user input and print appropriate message.
  • If there is no match print the default message

5 0
3 years ago
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