By Kenny199 | cryptogo | 7 Sep 2020

Cryptography is a branch of mathematics and computer science that deals with research and development of information security methods and data communication at their various levels, in an open environment accessible to a third party known as an "enemy", "competitor" or "potential opponent".

The field combines the development and analysis of protocols that deal with various aspects of information security in the presence of a third party. In addition to confidentiality, access permissions, passwords, proof of knowledge, challenge-response protocol, digital signature mechanisms, secret division, multi-participant calculation, confidentiality, identity verification, denial prevention and more.

An encryption system uses cryptological building blocks such as symmetric code, current code, public key, stacking functions, message verification code, random pseudo-generator and the like.
Modern cryptography integrates with other fields of research such as mathematics, statistics and probability, information theory, computer science and electronics engineering. Its applications are many and varied and include, among other things, security of communication networks, cellular communication, firewall, withdrawal terminals, credit cards, e-mail, e-commerce and more.

The name "cryptography" comes from the Greek word "crypto" which means hidden or the art of concealment, and which means "writing". In free translation the name is used interchangeably for the term cryptology which means theory, although its meaning is broader than the field of encryption only.

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