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Table Of Contents  CertiGuide to Security+

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Chapter 4:  Basics of Cryptography (Domain 4.0; 15%)

"The job is never done. Just because you've wiped out the top N holes in your systems doesn't mean that it's Miller time. Expand the scope of your sweeps to include more obscure vulnerabilities -- after all, you never hear or see the one that gets you."
-- "Senior Analyst”, InfoWorld Test Center

Chapter Objectives

The objective of this chapter is to provide the reader with an understanding of the following:

Domain 4.0: Basics of Cryptography – 15%

4.1 Be able to identify and explain the of the following different kinds of cryptographic algorithms:

  • Hashing; Symmetric; Asymmetric

4.2 Understand how cryptography addresses the following security concepts:

    • Confidentiality; Integrity (Digital Signatures)

    • Authentication; Non-Repudiation (Digital Signatures)

    • Access Control

4.3 Understand and be able to explain the following concepts of PKI (Public Key Infrastructure):

    • Certificates (Certificate Policies; Certificate Practice Statements)

    • Revocation; Trust Models

4.4 Identify and be able to differentiate different cryptographic standards and protocols.

4.5 Understand and be able to explain the following concepts of Key Management and Certificate Lifecycles:

    • Centralized vs. Decentralized

    • Storage (Hardware vs. Software; Private Key Protection)

    • Escrow; Expiration

    • Revocation (Status Checking)

    • Suspension (Status Checking)

    • Recovery (M-of-N Control)

    • Renewal; Destruction

    • Key Usage (Multiple Key Pairs: Single, Dual)

Quick navigation to subsections and regular topics in this section



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