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never [62]
2 years ago
9

How many warnings do u get before you like lose your account?

Computers and Technology
2 answers:
Step2247 [10]2 years ago
7 0

Answer: 5 warnings untill your account is gone.

sergiy2304 [10]2 years ago
6 0

5 Warnings before getting banned from Brainly

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Be consistent in whether you use single or double quotes to declare your strings: our autograder assumes you'll be consistent.
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3 years ago
a. The DES algorithm is based on the idea of the Feistel cipher. Explain how the Feistel cipher structure achieves substitution
madam [21]

Answer:

a. Feistel Cipher is basically a design model used in many block encryption algorithms one of them is DES. The Feistel structure has many rounds of substitution followed by permutation. In each round the plaintext is processed.

A Feistel Cipher comprise of;

1. Divide plaintext block into two parts

2. Perform multiple rounds of

a. Substitution on left half

b. Permutation by swapping halves

See attachment for the diagram of a feistel cipher.

B.

The concept of confusion and diffusion were identified by Claude Shannon in his paper Communication Theory of Secrecy Systems, published in 1949.

According to Shannon's definitions,

-Confusion means, making the relationship between the ciphertext and the key as complex and involved as possible.

It basically hides the relationship between the cipher text and the key. This property makes it difficult to find the key even tough there are many plaintext cipher text pairs created using the same key.

Diffusion is property that the non-uniformity which is much harder to detect. The distribution of the individual and pairs of neighbouring letters in the plaintext should be redistributed into the non-uniformity in the distribution of much larger structures of the ciphertext. The concept behind diffusion is to hide the relationship between the plaintext and the ciphertext. A cipher with good diffusion, should make sure that even if one bit in plaintext changes, then the ciphertext should change completely, in a manner such that its unpredictable.

Both Confusion and diffusion prevents the deduction of encryption key difficult. As a result this protects the original message or plaintext. Confusion and diffusion can be achieved using substitution and permutation.

Encryption methods use the principles of confusion and diffusion.

Confusion does the work of changing the data drastically from input to output by many ways like translate the data using a non-linear table created from the key.

Diffusion is used in encryption to make every bit of input affect every bit of the output which in tun makes the analysis difficult.

8 0
3 years ago
Read 2 more answers
Create a script that asks for the visitor's weight in pounds and his/her height in inches. The program should then calculate the
Nookie1986 [14]

Answer:

weightPound = float(input("Enter your weight in pounds "))

heightInches = float(input("Enter your height in inches "))

weightKg = weightPound*0.453592

heightMeter = heightInches*0.0254

BodyMassIndex = weightKg/(heightMeter*heightMeter)

print("")

print("Your Weight in kilograms is: ")

print(weightKg)

print("Your Height in meters is: ")

print(heightMeter)

print("Your Body Mass Index is: ")

print(BodyMassIndex)

Explanation:

  1. Above is a Python Script to accomplish the task
  2. See attached image for the program output.
  3. Observe that we used the formula weight/height*height to calculate the Body Mass Index
  4. Observe also the conversion from pounds to Kilogram and inches to meters

6 0
3 years ago
The link for notepad is located by default in the _______ menu.
jolli1 [7]
B. Accessories. Notepad, like many other useful tools, is located within the accessories area.
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Edmund wants to create a website for his company. He has created all the necessary content and now wants to style and format the
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CSS, or Cascading Style Sheets, will allow him to manipulate the looks.

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