CompTIA Tech+ CertMike: Prepare. Practice. Pass the Test! Get Certified!, 2nd Edition

CHAPTER 39Encryption: Objective 6.4: Identify common use cases for encryption

Encryption protects information from prying eyes by making it unreadable to anyone who does not have the required decryption key. We use encryption to protect data that is at rest on a storage device or in motion over a network.

In this chapter, you’ll learn the material that you need to know about Tech+ objective 6.4. The topics covered in this chapter include:

• Plain text vs. cipher text
• Data at rest
• Data in transit

CRYPTOGRAPHY

Encryption is one of the most important security controls that we can use to protect the confidentiality of our data. Encryption uses mathematical operations to transform information into a format where it is unreadable by anyone ...