Book Image

CASP+ CompTIA Advanced Security Practitioner Study Guide: Exam CAS-003 - Third Edition

By : Jeff T. Parker, Michael Gregg
Book Image

CASP+ CompTIA Advanced Security Practitioner Study Guide: Exam CAS-003 - Third Edition

By: Jeff T. Parker, Michael Gregg

Overview of this book

The next few years will bring a 45-fold increase in digital data and at least one-third of that data will pass through the cloud. The level of risk to data everywhere is growing in parallel and organizations are in need of qualified data security professionals to safeguard their information. The CASP+ certification validates this in-demand skillset and this book is your ideal resource for passing the exam. CASP+ meets the ISO 17024 standard and is approved by the U.S. Department of Defense to fulfill Directive 8570.01-M requirements. It is also compliant with government regulations under the Federal Information Security Management Act (FISMA). As such, this career-building credential makes you in demand in the marketplace and shows that you are qualified to address enterprise-level security concerns. The CASP+ CompTIA Advanced Security Practitioner Study Guide: Exam CAS-003, Third Edition, is the preparation resource you need to take the next big step for your career and pass with flying colors. This book provides detailed explanations of technical and business concepts that give you the background you need to apply, identify, and implement appropriate security solutions. You’ll solidify your understanding of each objective with end-of-chapter reviews. The book contains hands-on lab exercises and hundreds of practice questions to help you test your knowledge in advance of the exam. By the end of the book, you’ll have the knowledge and the confidence to ace the CASP+ certification exam.
Table of Contents (22 chapters)
Free Chapter
1
Cover
2
Acknowledgments
3
About the Authors
4
Table of Exercises
6
Assessment Test
7
Answers to Assessment Test
18
Index
19
Advert
20
End User License Agreement

Hybrid Encryption

Sometimes mixing two things together makes good sense. Do you remember the commercial, “You got your chocolate in my peanut butter?” While you may not consider cryptography as tasty as chocolate, there is a real benefit to combining both symmetric and asymmetric encryption. Symmetric encryption is fast, but key distribution is a problem. Asymmetric encryption offers easy key distribution, but it’s not suited for large amounts of data. Combining the two into hybrid encryption uses the advantages of each and results in a truly powerful system. Public key cryptography is used as a key encapsulation scheme, and the private key cryptography is used as a data encapsulation scheme. Here is how the system works. If Bob wants to send a message to Alice, the following occurs:

  1. Bob generates a random private key for a data encapsulation scheme. This session key is a symmetric key.
  2. The data encapsulation happens when Bob encrypts the message using the symmetric...