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3 years ago

How can you encrypt and decrypt a message in cryptography

1 answer:

5 0

There are two main types of encryption - <span>symmetric and asymmetric.

Using symmetric encryption, you use a single secret key that is used to both encrypt and decrypt the data. This form of encryption has been used way before computers! Without this key it is very hard to decrypt a message. However, the issue with this is that if you want to send an encrypted message, you also have to send a key to them, and </span>if your somebody unintended intercepts the key, they can read the message.

What's the solution? Asymmetric cryptography or public key encryption. Asymmetric cryptography uses encryption that splits the key into two smaller keys. One of the keys is public and one is kept private. A good metaphor for understanding this is the public key is the lock, and the private key is the key. You can encrypt a message to send to somebody with their public key, locking it, which they can then decrypt, unlock, with their private key. And vice versa. So with this kind of encryption it's very difficult to decrypt a message for anybody but the owner as it's much harder to steal when it doesn't need to leave their computer, but easy to encrypt messages to send to them

You might be interested in

If a company's IS-related programs are not developed in-house, then the development group of the IS department will be staffed p

EastWind [94]

Answer:Systems analysts

Explanation: System analyst is referred as the person in an organization for resolving the issue related program and information technologies. The person basically design the solution by analyzing the problem accordingly.

Information system of company has any separate department for handling the problems related with the IS-related programs. These problem usually lies under the department of the system analyst. They work on the problem solving, improvement and improvisation, training etc.

3 0

3 years ago

A hardware compatibility list recommends striping with double parity as storage for an application. In a test environment, a tec

riadik2000 [5.3K]

Answer:

RAID level 5 can be used to compensate a limited number of available disks.

Explanation:

There are two type of RAID

Software RAID
Hardware RAID

Software RAID

deliver services form the host.

Hardware RAID

provides hardware services.

RAID has levels

0, 1, 5, 6, and 10

RAID 0, 1, and 5 work on both HDD and SSD media,

4 and 6 also work on both media.

RAID 0 :Striping

In this level minimum of two disks,RAID 0 split the file strip the data.Multiple hard drive are used to split the data.

RAID 1 : Mirroring

In this level Minimum two disk require and provide data tendency.

RAID 5 :Stripping with parity

Parity is a binary data.RAID system calculate the value which system used to recover the data.

Most RAID system with parity function store parity blocks.

RAID 5 combines the performance of RAID 0 with redundancy of RAID 1.

RAID 5 level should minimize the fault tolerance.

4 0

3 years ago

4. Which of the following root keys contains the data for a system’s non-user-specific configurations? a. HKEY_LOCAL_MACHINE b.

seropon [69]

Answer:

The system’s non-user-specific configurations are stored in the HKEY_LO-

CAL_MACHINE root key of the Registry.

Explanation:

6 0

3 years ago

Design a class named QuadraticEquation for a quadratic equation ax^2+bx+x=0. The class contains: **private data fields a, b, and

LenaWriter [7]

Answer:

<em>C++</em>

///////////////////////////////////////////////////////////////////////////////////////////

#include <iostream>

using namespace std;

//////////////////////////////////////////////////////////////////

class QuadraticEquation {

int a, b, c;

public:

QuadraticEquation(int a, int b, int c) {

this->a = a;

this->b = b;

this->c = c;

}

////////////////////////////////////////

int getA() {

return a;

}

int getB() {

return b;

}

int getC() {

return c;

}

////////////////////////////////////////

// returns the discriminant, which is b2-4ac

int getDiscriminant() {

return (b*2)-(4*a*c);

}

int getRoot1() {

if (getDiscriminant() < 0)

return 0;

else {

// Please specify how to calculate the two roots.

return 1;

}

int getRoot2() {

if (getDiscriminant() < 0)

return 0;

else {

// Please specify how to calculate the two roots.

return -1;

}

};

//////////////////////////////////////////////////////////////////

int main() {

return 0;

}

4 0

3 years ago

What subsection of the Internet requires specialized browser to access and is frequently used by cyber criminals and underground

kotykmax [81]

Answer:

c. Dark Web

Explanation:

Surface web is also called visible web is a part of world wide web that can be easily searchable using search engines as its contents are indexed by the search engines such as Google and its contents are accessible by public using standard web browsers. So a is not a suitable choice.

Deep Web is called invisible web as it is not accessible or searchable to standard search engines like Google. Search engines cannot index the contents of these sites. However such sites do not requires specialized browsers to access. So b is not a suitable choice.

Dark Web: It is a part of Deep Web sites but it requires specialized software and browsers to access. These sites cannot be indexed and cannot be searchable through standard search engines. This is also called dark side of the world wide web darker which is frequently used by criminals, hackers, black markets, hit-men. Illegal activities on a massive level is takes place in the dark web such as access to stolen sensitive information, malware, drug trade and terrorist operations. These sites are temporary and keep changing addresses to lessen the risk of getting caught by govt agencies or security officials. So c is the suitable choice.

Crypto-Net is a kind of neural network which works with encrypted data which can make a prediction based on the data without disclosing the data and prediction to the 3rd party. So d is not a suitable option.

6 0

3 years ago