Book Image

Modern Cryptography for Cybersecurity Professionals

By : Lisa Bock
Book Image

Modern Cryptography for Cybersecurity Professionals

By: Lisa Bock

Overview of this book

In today's world, it is important to have confidence in your data storage and transmission strategy. Cryptography can provide you with this confidentiality, integrity, authentication, and non-repudiation. But are you aware of just what exactly is involved in using cryptographic techniques? Modern Cryptography for Cybersecurity Professionals helps you to gain a better understanding of the cryptographic elements necessary to secure your data. The book begins by helping you to understand why we need to secure data and how encryption can provide protection, whether it be in motion or at rest. You'll then delve into symmetric and asymmetric encryption and discover how a hash is used. As you advance, you'll see how the public key infrastructure (PKI) and certificates build trust between parties, so that we can confidently encrypt and exchange data. Finally, you'll explore the practical applications of cryptographic techniques, including passwords, email, and blockchain technology, along with securely transmitting data using a virtual private network (VPN). By the end of this cryptography book, you'll have gained a solid understanding of cryptographic techniques and terms, learned how symmetric and asymmetric encryption and hashed are used, and recognized the importance of key management and the PKI.
Table of Contents (16 chapters)
Section 1: Securing Our Data
Section 2: Understanding Cryptographic Techniques
Section 3: Applying Cryptography in Today's World


Now, it's time to check your knowledge. Select the best response to the following questions and then check your answers, found in the Assessment section at the end of the book:

  1. _____ was the first VPN and can work with almost any operating system; however, it is not secure and should be avoided.

    a. PPTP

    b. L2TP

    c. SSTP

    d. IKE

  2. _____ is a technology used to securely access remote hosts. When using this type of VPN, once the client and server are connected, you will interface with the host using the CLI.

    a. PPTP

    b. ISAKMP

    c. IKE

    d. SSH

  3. The _____ protocol provides data confidentiality and optional authentication of data packets between hosts.

    a. PPTP

    b. ESP

    c. AH

    d. IKE

  4. When traveling in _____ mode, IPsec will encrypt only the data portion of each packet yet leave the header unencrypted.

    a. tunnel

    b. IKE

    c. PFS

    d. transport

  5. In order to protect against a malicious actor gaining access into a system and stealing a server's private key, a network administrator...