Simply put, encryption is the process of encoding information so that unauthorized persons cannot read or modify it. Encryption changes the form of the data and the new form can only be read by those who have access to a decoding key or possess tools and data allowing them to create a decoding key. At present, encryption is one of the most popular and effective methods of securing data used by organizations.

The purpose of data encryption is the protection of confidential data and information in electronic format, stored in information/communication systems and transferred using the internet or other computer networks. The outdated DES (Data Encryption Standard) has been superseded by modern encryption algorithms which play a decisive role in the security of IT systems and communication.