Answer:
(a)
Assuming the one-time pad P is used to XOR the message M to get ciphertext C, the following holds:
M ⊕ P = C
P = C ⊕ M
this is a basic property of how XOR works.
(b)
P = M1 ⊕ C1
then M2 = C2 ⊕ P
(c)
The attacker can make assumptions about the message (e.g., presence of certain words and spaces) and then calculate which pad would be needed to get them in the ciphertexts. He then has two ciphertexts that should yield valid content, making it much more easy to guess the pad.
Explanation:
Answer:
--- True
--- False
--- True
Explanation:
Required
Determine if the statements are true or not.
To do this, we convert DE from base 16 to base 10 using product rule.
So, we have:
In hexadecimal.
So, we have:
Hence:
(a) is true
First, convert D7 to base 10 using product rule
So, we have:
Next convert 215 to base 2, using division rule
Write the remainders from bottom to top.
<em>Hence (b) is false</em>
Convert 13 to base 10 using product rule
Hence; (c) is true
Answer:
2. Add error routines that allow the program to execute fully even when unanticipated data is entered.
3. Create error messages to alert the user to an error in data entry.
4. Create controls in the program that ensure the input of proper data.
Explanation:
Mark me brainliest plz
Answer:
The solution code is written in Python:
- itemsOSS = ""
- userItem = input("Enter an item: ")
-
- while(item != "Exit"):
- itemsOSS += userItem + " "
- userItem = input("Enter an item: ")
-
- print(itemsOSS)
Explanation:
Firstly, we create a variable itemsOSS (intialized it with empty string) and use it as output string stream (Line 1).
Next use input function to prompt user to enter first item (Line 2)
While the item value is not "Exit" (Line 4), append userItem to variable itemsOSS.
When the user enter "Exit", use print function to print the itemsOSS string (Line 8).
