CompTIA Security+™: Review Guide, Second Edition

6.1 Summarize general cryptography concepts

There is a wide breadth of topics related to cryptography. Some of these are foundational issues, some are security services, and others are solutions or implementations. This section discusses many important general cryptography concepts that are addressed on the Security+ exam.

Security practitioners utilize cryptographic systems to meet several fundamental goals, including confidentiality, integrity, and authentication. Achieving each of these goals requires the satisfaction of a number of design requirements, and not all cryptosystems are intended to achieve all possible goals.

Confidentiality ensures that data remains private while at rest, such as when stored on a disk, or in motion, such as during ...