# Javascript Algorithms And Data Structures Caesar Encryption Projects

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An encryption course may be all it takes to convince yourself that encryption is as great as it sounds. Maybe it was the word crypt you implied, or maybe you think knowing the secret keys, the hidden messages, and the cipher algorithms will help you find a career path for your of skills problems resolution . In any case, we are here for you help.

Whether or not you believe you can be successful in computing , learning cryptography doesn’t have to be scary. In this guide, we’ll look at the field from all angles, help you chart a personal path to gaining knowledge, and point you to some great courses and resources that may be the key to your future.

## What is encryption?

Encryption is the art of creating codes to share valuable information with desired parties while avoiding unwanted parties. Starting from a Greek root which roughly means hidden writing, cryptography has been practiced continuously since ancient times. Its modern form has developed in tandem with advances in mathematics and computer science.

Cryptography and its double cryptanalysis field are two sides of the same coin. While cryptographers working with algorithms encryption and convert plain text something cryptogram , a process known as the name of cryptography, cryptanalysts study the conversion process on the back of cryptogram in plain text, called decryption. Cryptography is the main area of ‚Äã‚Äãthe two.

### What - what the encryption?

Whenever people, organizations, and businesses need to protect their information from malicious attacks, encryption is one of the first tools they use. Especially in the age of the Internet, digital messages sent over the information superhighways are vulnerable to hackers, who can steal the precious load of valuable data without ever breaking a sweat.

As data does it so that our lives change more and more online, so that data security cryptographic applications continue to grow. Here are four main ways encryption helps us protect ourselves and our data in the modern world.

• Secure communication. For Julius Caesar it was physical letters containing military strategies between him and his generals. For us it is -at end - end encrypted WhatsApp messages containing sensitive information. This or emails containing state secrets .
• Information security . This is a huge area of ‚Äã‚Äãinterest for the modern cryptographers, covering both the storage security and data. encryption techniques used to protect data is to ensure confidentiality, integrity and availability .
• eCommerce . Not long ago, public intellectuals were betting against the Internet, arguing that the tra nsfer money on the web will never be safe. Well, over to us now. The big breakthrough in cryptography was SSL and the rest is l ’ history.
• Digital signatures. This form of identity authentication backbone encryption technology for some types of most valuable digital information . The parties to an official document can now define in terms distance without fear of fraud.

### Types of Encryption

List all forms of secret writing ever devised is a daunting task. Lucky for me, other sites have already done the brilliant job of compiling i classic codes and modern encryption algorithms < / a> in one place, so I didn’t.

Students of the modern version will be relieved to know that computer science has managed to organize almost all of these codes and algorithms into three main types. These are the cryptography secret key, cryptography public key and the one-way cryptography .

#### secret key encryption

also known as symmetric key encryption or Simply symmetric encryption, this type involves an encrypted message shared between two parties and a single key that the sender and recipient have access to. As a result, the sender of the message encrypts using the same encryption key that the recipient of the other party will end account to use for decryption.

A big limitation in using a key for encryption and decryption is that if the two parties have been reduced to communicating in secret, they must find a secure way to exchange the key. Any key that is forced to pass through the same message transit path is also vulnerable to exposure.

#### Public Key Cryptography

Public Key Cryptography works around the key exchange problem by adding a second key. Since different keys are used for encryption and decryption, this type is also called asymmetric encryption. A different way to understand the asymmetry is a key that is kept private and one key is public, but it can afford to be exposed.

Everyone on the network has a public and private key, the former for encryption and the latter for decryption. Open a line of communication with someone by sending them your public key, which they can use any time they want to send you an encrypted message. If someone steals the message, it won’t matter, because your private key can decrypt it.

#### one-way encryption

The most common form of one-way encryption is a hash function. Once encrypted, a one-way cryptographic message is virtually impossible to crack. At first glance, it seems like a limited value, but it’s more useful than you might imagine

a hash function leaves of a trace - digital, which can protect the words password and ensure the integrity Datas. If a company uses a hashing algorithm to store all of its passwords in encrypted form, they will be useless to any hacker who can break into a system. And a hacker cannot manipulate a person’s data in transit if there is a hashed recording location.