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ivann1987 [24]
3 years ago
14

What is your understanding of the difference between a stream cipher and a block cipher?

Computers and Technology
1 answer:
Mars2501 [29]3 years ago
4 0

Answer:

In a stream cipher, the information is ciphered byte-by-byte.

In a block cipher, the information is ciphered block by block.

Explanation:

Suppose I have the following text:

Buffalo Bills New England Patriots

New York Jets Miami Dolphins

Each line is one byte, so, on the stream cipher, i am going to apply the ciphering algorithm on:

The letter B

The letter u

The letter f

Until

The letter s(of Miami Dolphins)

Now for the block cipher, i am saying that each line is a block, so the algorithm is going to be applied.

First on: Buffalo Bills New England Patriots

Then: New York Jets Miami Dolphins

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Assume that x is a string variable has been given a value. Write an expression whose value is true if and only if x is an hexade
Lady bird [3.3K]

Answer:

import string

all(c in string.hexdigits for c in s)

Explanation:

The hexadecimal number system, often abbreviated as "hex", is a numeral system which consist of 16 symbols (base 16). The standard numeral system we are all use to, called decimal (base 10) and utilizes ten symbols: 0,1,2,3,4,5,6,7,8,9.

Using python programming language

import the  string module

the second expression iterate through the digit in s and confirm if they all are within the rage of 0 -9 ad A -F. If yes , it returns True and else, it returns false

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3 years ago
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Practice!
And a good keyboard I recommend mechanical key boards
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Hope this helps!
Brainliest is much appreciated!
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_____ can be either software-based or deployed via hardware, such as a recording "dongle" that is plugged in between a keyboard
Monica [59]
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3 years ago
What are the differences and similarities of computer virus and biological virus. Give 4 examples
Papessa [141]

Answer:

During recent months, we’ve witnessed an unexpected and distressing pandemic of a coronavirus disease. What I find especially distressing about it is how the worldwide adversity was caused by just a tiny thing — namely, a virus called SARS-CoV-2.

However, biological viruses have always been a potent threat to humanity, as historic pandemics have proved. No wonder viruses became an ideal weapon model in a totally different world — a world of programming. The first computer viruses were created as early as in the 1970s. Starting as pranks, they evolved to become a major threat to the stability of computer networks worldwide. And the more I think of viruses, both biological and digital, the more amazed I am by their similarities.

We don’t know what kind of challenges viruses of either type will cause in the future, but understanding how they infect, the symptoms they induce, how they spread, and the damage they can cause can help us fight both.

The Common Thread

Let’s start with the basics: What does a virus look like?

computer virus of 1999

Click image for larger version

Figure 1: Pictured on the left is an electron microscope image of SARS-CoV-2 particles - the pandemic-causing coronavirus. Source: NIAID-RML. Pictured on the right is a code snippet of a Melissa, the notorious email-spreading computer virus of 1999. Source: Gizmodo.

The images in Figure 1 might look vastly different, but, essentially, they’re the same: a string of code. In the coronavirus, it’s the RNA genome in a shell; in Melissa, it’s computer code. In both cases, the code is an “instruction” for the virus to follow.

Explanation:

here is your answer hope you will enjoy

thank you

6 0
3 years ago
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