What is Encryption? Why You Need it? A Complete Guide

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Encryption is the method which converts the information in security or private code which hides the true meaning of the information. The Cryptography is referring to the science of encryption and decryption. The encrypted message can only access by the authorized party and not anyone else. In the language of computer, the data which is not encrypted is known plaintext and the data which is encrypted is known as cipher text.

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There are two types of Encryption key named as Symmetric key and Public key.

  • Symmetric Key – In this scheme, the keys of encryption and decryption are the same. In order to achieve secure communication, the parties must have the same key.
  • Public Key – In this scheme, there is only one key which is published to the encrypted message holder. The receiving party only has access to decrypt the message. This key is first described in 1973. The Public key is also known as Private key.

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The Encryption has much importance in various fields which secures different Information Technology data. There are 4 major fields in which Encryption plays a very important role which are as follows –

– Confidentiality which encodes the content of messages.

– The origin of the message is verifying by Authentication.

– The Integrity in Encryption of the data proves that there has been no change in the message content since it was sent.

– Non-repudiation helps the sender from denying of sending the encrypted message.



Encryption starts its work by taking the plaintext from variable sources like Email or Text messages and starts converting the plaintext into Cipher text which is the encrypted text. This will maintain the confidentiality of the data and cannot be decrypted by anyone.

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The Encryption protects the data either it is stored in the computer system or transferred to other via the internet. To unlock the encrypted message, both the sender and receiver should have the key to decoding the text. The encrypted data can only present in the readable form if the decryption of data done properly.

Source - What is Encryption

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Created on Jul 15th 2020 11:06. Viewed 189 times.


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