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What is Cryptography? – Definition, Types, and More

What is Cryptography? - Definition, Types, and More

Cryptography Definition

Cryptography is the science and art of writing messages in encrypted form or code. It is part of a field of studies that deals with secret communications.

It is a technique that keeps documents and data. And also, it works through the use of figures or codes to write something secret in papers.

The Romans used codes to hide their war projects from those who should not know them so that only people who knew the meaning of these codes.

And also, From the evolution of computers, It is widely disseminated, used, and modified.

Also Read: What is a Penetration Test (Pen test)? – Definition, Methods and More

What is Cryptography in Computer Security?

What keys does Cryptography have?

Cryptographic keys can be basically of two types:


  1. It is the use of specific algorithms to decrypt and encrypt (hide) documents.
  2. They are groups of different algorithms that relate to each other to keep the information confidential.


  1. It is a mathematical formula that uses two keys, one public and the other private.
  2. The public key is one to which any person can have access, while the private key is one that only the person who receives it can decipher.

What are the Types of Cryptography Keys?

Types of cryptography keys are:

Single key cryptography

Public and private key cryptography

Also Read: What is TACACS? – Definition, Versions, and More

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