Encryption

The technique of encoding information is referred to as encryption when discussing cryptography. This procedure alters the information's initial representation, which is known as plaintext, into a different form that is known as ciphertext. In an ideal world, only those who are permitted to do so may convert ciphertext back into plaintext and have access to the information it originally contained. Encryption does not in and of itself prevent interference; rather, it prevents a would-be interceptor from understanding the material that is being sent.

An encryption method will often make use of a pseudo-random encryption key that is produced by an algorithm. This is done for practical reasons. It is feasible to decode the message without having possession of the key; but, in order to do so, extensive computer resources as well as expertise are necessary for a well-designed encryption system. The communication can be simply decrypted by an authorised receiver using the key that is supplied by the originator to recipients, but unauthorised users are unable to utilise the key.

Throughout the course of history, several techniques of encryption have been used as aids in cryptography. The early methods of encryption were often used in the military's communication. Since that time, new approaches have surfaced and quickly become standard practise across the board in contemporary computing. The ideas of public key encryption and symmetric key encryption are used in modern encryption methods. Because current computers are not very good at breaking encryption, new encryption methods provide an additional layer of protection against potential threats.