CompTIA Security+ SY0-601 Exam Cram, 6th Edition

Chapter 16

Cryptographic Concepts

This chapter covers the following official Security+ exam objective:

• ▶ 2.8 Summarize the basics of cryptographic concepts.

Essential Terms and Components

• ▶ digital signature

• ▶ key length

• ▶ key stretching

• ▶ salting

• ▶ hashing

• ▶ key exchange

• ▶ elliptical curve cryptography (ECC)

• ▶ perfect forward secrecy (PFS)

• ▶ quantum cryptography

• ▶ ephemeral

• ▶ blockchain

• ▶ mode of operation

• ▶ stream cipher

• ▶ block cipher

• ▶ symmetric cryptography

• ▶ asymmetric cryptography

• ▶ steganography

• ▶ homomorphic encryption

Cryptosystems

A cryptosystem or cipher system provides a method for protecting information by disguising it in a format that only authorized systems or individuals can read. The use and creation of such systems ...