CRYPTOGRAPHHY

Confidentiality: consists of privacy, data is only visible for people that have the rights to see it.

Cryptography: consists of writing words in a different way, to have the data cofidentiality.

It is the set of techniques that allows you to encrypt the data:Encrypt and Decrypt:

Encryption consists of modifying the data using cryptography, so other people can't understand it.

Decryption consists of discovering the way that the data has been encrypt of.

Algorithm: steps or patrons that you can follow to decrypt a word or a phrase.

A key: is the number you use in order to encrypt something using algorithms.