Question

both queation plz plz plz

We discussed XOR cipher in class. If the security key is "1,0, 1,0, 1,0, 1 0" and a plaintext is "1, 1,0, 1,0, 1,0,0 applying XOR and the ciphertext (the encrypted) will be: O 1,0,1,0,1,0, 1,0 O 1,1,0, 1,0,1,0,0 O 0,0, 1,0, 1,0, 1,1 O 0,1,0, 1,0,1,0,1 O 0,1,1,1,1,1,1,0 O 1,0,0,0,0,0,0,1 Question 10 1 pts If a security key has 10 bits, how many possible security keys are there? O between 100 and 500 O 20 O between 500 and 1000 O around 1000 O around 100 O-10000 Question 11 1 pts

Answer 1

Question 9)

Key - 10101010

text - 11010100

Using XOR,

0 XOR 0 - 0

1 XOR 1 - 0

0 XOR 1 - 1

1 XOR 0 - 1

Using the above rules, doing XOR, the result is 0,1,1,1,1,1,1,0(Option 5)

Question 10)

The security key has 10 bits. Each bit has possible values of 0 and 1(2 values). Hence the total number of security keys = 2^10 = 1024 (Option 4)