O'Reilly logo

CISSP in 21 Days - Second Edition by M. L. Srinivasan

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

The fundamentals of cryptography

Cryptography is an art as well as a science that involves the process of transforming plain text into scrambled text and vice versa. The purpose of cryptography is to conceal confidential information from unauthorized entities and ensure immediate detection of any alteration made to the concealed information. Concealing the original information that is in human or machine-readable format is achieved by a method called encryption.

The methods of encryption

A plain text in the cryptographic context is information that is in a human or machine-readable format that needs protection. For example, the password that you are typing is in plain text. Similarly, documents such as business agreements, MOU, and so on are in ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required