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3 years ago

The principal object of a hash function is __________ .

Computers and Technology

1 answer:

abruzzese [7]3 years ago

8 0

Answer:

a. data integrity

Explanation:

In Computer science, a hash function can be defined as any function which is used to map data by accepting a block of data with variable length size or arbitrary size as input to produce a fixed size hash values or codes.

Generally, when a block of data (input) of arbitrary size is hashed, the resulting hash values or codes is usually smaller than the input data. Thus, hash functions are considered to be a compression of data and as a result, sometimes called compression functions. Basically, the block size of a hash function typically ranges from 128 bits to 512 bits.

Some of the properties of a hash function are;

1. Pre-image resistance: this makes it practically impossible to reverse a fixed-size hash values to its initial arbitrary size. This property helps to maintain and enhance data integrity by making it difficult or impossible for an attacker to find the input data from a hash value.

2. Second pre-image resistance: this property makes it near impossible or very difficult to determine or decode another input data from a given set of input and hash values. Also, this helps to enhance data integrity.

3. Collision resistance: this is to make possible for all hash values to have a unique value. This simply means that, with this property it would be difficult for different input data to have the same hash value. Thus, it helps to create integrity in data management.

Hence, with the aforementioned properties, the principal object of a hash function is data integrity.

Hash functions in the computer world includes;

1. Message Digest (MD): it is a 128 bit hash function and comprises of the following; MD2, MD4, MD5, and MD6.

2. Secure Hash Function (SHA): it comprises of the following; SHA-0, SHA-1,SHA-2, and SHA-3.

3. Whirlpool: it comprises of the following; Whirlpool-0, Whirlpool-T, and Whirlpool. It is primarily a 512 bit hash function.

4. RACE Integrity Primitives Evaluation Message Digest (RIPEMD): it comprises of the following versions; RIPEMD, RIPEMD-128, and RIPEMD-160.

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3 years ago

Write an algorithm which gets a number A, if it is even, prints even, and if it is odd prints odd.

juin [17]

Answer:

The algorithm to find A is even or odd.

input A.
Check the remainder on diving by 2 by A%2.
If remainder is 1 then A is odd Print(Odd).
If remainder is 0 print(Even).

Explanation:

To check if the number is even or odd we use modulo operator(%).Which gives the remainder on dividing.So if we do this A%2 it will give the remainder that will come out on dividing the value of A by 2.

So if the remainder comes out is 1 then the number is odd and if the remainder is 0 then the number is odd.

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3 years ago

What is the term for the instructions that tell a computer what to do

Liono4ka [1.6K]

Answer: I believe it's software.

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3 years ago

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inn [45]

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3 years ago

How does Mixed Reality expand on Augmented Reality?

taurus [48]

Mixed Reality expand on Augmented Reality option d: by enabling real-time interaction between real and virtual objects.

<h3>How does mixed reality expand on augmented reality?</h3>

Mixed reality is known to be one that is made up of both augmented reality and that of augmented virtuality.

Note that Mixed reality is one that acts so as to make an environment with interactive kinds of digital objects. Augmented reality needs a screen to be able to experience the augmented experience. Mixed reality is said to be experienced via the a headset.

Hence, Mixed Reality expand on Augmented Reality option d: by enabling real-time interaction between real and virtual objects.

Learn more about Augmented Reality from

brainly.com/question/9054673

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2 years ago