Cryptography And Network Security

Strengthen your defenses against cyber attacks by learning cryptography and network security principles and practices.

(CryptoSec.AB1.E1) / ISBN : 978-1-64459-188-8
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About This Course

We'll break down core network security and cryptography concepts, so you'll understand the foundations of securing information and networks. Uncover how secure communication protocols like TLS/SSL and SSH safeguard data transmission.  You’ll also learn how firewalls and intrusion detection systems work to identify and mitigate threats like DDoS attacks. In addition, explore security considerations of cloud computing and the Internet of Things (IoT) to gain strategies for securing these emerging technologies. Our hands-on virtual labs solidify your understanding of real-world tools for encryption and decryption, network security configuration, and implementing best practices.

Skills You’ll Get

  • Understand core cybersecurity concepts for securing information and networks.
  • Grasp the fundamentals of cryptography and explore various encryption methods.
  • Apply secure communication protocols like TLS/SSL and SSH to safeguard data transmission.
  • Mitigate security challenges specific to wireless networks and email communication.
  • Master essential network security tools and best practices, including firewalls and intrusion detection systems.
  • Navigate the security considerations of cloud computing and the Internet of Things (IoT).
  • Gain hands-on experience with real-world security tools through practical exercises.

Get the support you need. Enroll in our Instructor-Led Course.


28+ Lessons | 130+ Quizzes | 201+ Flashcards | 201+ Glossary of terms


60+ Pre Assessment Questions | 2+ Full Length Tests | 60+ Post Assessment Questions | 120+ Practice Test Questions

Hands-On Labs

33+ LiveLab | 32+ Video tutorials | 44+ Minutes


Information and Network Security Concepts

  • Cybersecurity, Information Security, and Network Security
  • The OSI Security Architecture
  • Security Attacks
  • Security Services
  • Security Mechanisms
  •  Cryptography
  • Network Security
  • Trust and Trustworthiness
  • Standards

Introduction to Number Theory

  • Divisibility and The Division Algorithm
  • The Euclidean Algorithm
  • Modular Arithmetic
  • Prime Numbers4
  • Fermat’s and Euler’s Theorems
  • Testing for Primality
  • The Chinese Remainder Theorem
  • Discrete Logarithms
  • Appendix 2A: The Meaning of Mod

Classical Encryption Techniques

  • Symmetric Cipher Model
  • Substitution Techniques
  • Transposition Techniques

Block Ciphers and the Data Encryption Standard

  • Traditional Block Cipher Structure
  • The Data Encryption Standard
  • A DES Example
  • The Strength of DES
  • Block Cipher Design Principles

Finite Fields

  • Groups
  • Rings
  • Fields
  • Finite Fields of the Form GF(p)
  • Polynomial Arithmetic
  • Finite Fields of the Form GF (2n)

Advanced Encryption Standard

  • Finite Field Arithmetic
  • AES Structure
  • AES Transformation Functions
  • AES Key Expansion
  • An AES Example
  • AES Implementation
  • Appendix 6A: Polynomials with Coefficients in GF(28)

Block Cipher Operation

  • Multiple Encryption and Triple DES
  • Electronic CodeBook
  • Cipher Block Chaining Mode
  • Cipher Feedback Mode
  • Output Feedback Mode
  • Counter Mode
  • XTS-AES Mode for Block-Oriented Storage Devices
  • Format-Preserving Encryption

Random Bit Generation and Stream Ciphers

  • Principles of Pseudorandom Number Generation
  • Pseudorandom Number Generators
  • Pseudorandom Number Generation Using a Block Cipher
  • Stream Ciphers
  • RC4
  • Stream Ciphers Using Feedback Shift Registers
  • True Random Number Generators

Public-Key Cryptography and RSA

  • Principles of Public-Key Cryptosystems
  • The RSA Algorithm

Other Public-Key Cryptosystems

  • Diffie–Hellman Key Exchange
  • Elgamal Cryptographic System
  • Elliptic Curve Arithmetic
  • Elliptic Curve Cryptography

Cryptographic Hash Functions

  • Applications of Cryptographic Hash Functions
  • Two Simple Hash Functions
  • Requirements and Security
  • Secure Hash Algorithm (SHA)
  • SHA-3

Message Authentication Codes

  • Message Authentication Requirements
  • Message Authentication Functions
  • Requirements for Message Authentication Codes
  • Security of MACs
  • MACs Based on Hash Functions: HMAC
  • MACs Based on Block Ciphers: DAA and CMAC
  • Authenticated Encryption: CCM and GCM
  • Key Wrapping
  • Pseudorandom Number Generation Using Hash Functions and MACs

Digital Signatures

  • Digital Signatures
  • Elgamal Digital Signature Scheme
  • Schnorr Digital Signature Scheme
  • Nist Digital Signature Algorithm
  • Elliptic Curve Digital Signature Algorithm
  • RSA-PSS Digital Signature Algorithm

Lightweight Cryptography and Post-Quantum Cryptography

  • Lightweight Cryptography Concepts
  • Lightweight Cryptographic Algorithms
  • Post-Quantum Cryptography Concepts
  • Post-Quantum Cryptographic Algorithms

Cryptographic Key Management and Distribution

  • Symmetric Key Distribution Using Symmetric Encryption
  • Symmetric Key Distribution Using Asymmetric Encryption
  • Distribution of Public Keys
  • X.509 Certificates
  • Public-Key Infrastructure

User Authentication

  • Remote User-Authentication Principles
  • Remote User-Authentication Using Symmetric Encryption
  • Kerberos
  • Remote User-Authentication Using Asymmetric Encryption
  • Federated Identity Management

Transport-Level Security

  • Web Security Considerations
  • Transport Layer Security
  • Secure Shell (SSH)

Wireless Network Security

  • Wireless Security
  • Mobile Device Security
  • IEEE 802.11 Wireless LAN Overview
  • IEEE 802.11i Wireless LAN Security

Electronic Mail Security

  • Internet Mail Architecture
  • Email Formats
  • Email Threats and Comprehensive Email Security
  • S/MIME
  • DNS-Based Authentication of Named Entities
  • Sender Policy Framework
  • Domainkeys Identified Mail
  • Domain-Based Message Authentication, Reporting, and Conformance

IP Security

  • IP Security Overview
  • IP Security Policy
  • Encapsulating Security Payload
  • Combining Security Associations
  • Internet Key Exchange

Network Endpoint Security

  • Firewalls
  • Intrusion Detection Systems
  • Malicious Software
  • Distributed Denial of Service Attacks

Cloud Security

  • Cloud Computing
  • Cloud Security Concepts
  • Cloud Security Risks and Countermeasures
  • Cloud Security as a Service
  • An Open-Source Cloud Security Module

Internet of Things (IoT) Security

  • The Internet of Things
  • IoT Security Concepts and Objectives
  • An Open-Source IoT Security Module

Appendix A: Basic Concepts from Linear Algebra

  • A.1 Operations on Vectors and Matrices
  • A.2 Linear Algebra Operations Over Zn

Appendix B: Measures of Secrecy and Security

  • B.1 Conditional Probability
  • B.2 Perfect Secrecy
  • B.3 Information and Entropy
  • B.4 Entropy and Secrecy
  • B.5 Min-Entropy

Appendix C: Data Encryption Standard

Appendix D: Simplified AES

  • D.1 Overview
  • D.2 S-AES Encryption and Decryption
  • D.3 Key Expansion
  • D.4 The S-box
  • D.5 S-AES Structure

Appendix E: Mathematical Basis of the Birthday Attack

  • E.1 Related Problem
  • E.2 The Birthday Paradox
  • E.3 Useful Inequality
  • E.4 The General Case of Duplications
  • E.5 Overlap Between Two Sets


Information and Network Security Concepts

  • Obtaining Information about an IP Version
  • Getting Information about the DNS
  • Getting Information about the UDP Ports
  • Getting Information about the Current Connection Statistics of UDP
  • Getting the UDP Settings
  • Getting Information about the TCP Ports
  • Getting Information about the Current Connection Statistics of TCP
  • Getting the TCP Settings
  • Obtaining Information about the Net Firewall Profile
  • Obtaining IP Route Information from the IP Routing Table

Classical Encryption Techniques

  • Using OWASP ZAP
  • Performing Symmetric Encryption

Advanced Encryption Standard

  • Encrypting a File or Folder
  • Configuring File and Share Permissions
  • Using BitLocker in Windows 10
  • Configuring MDT
  • Creating a New Partition and Configuring BitLocker
  • Implementing AES Encryption

Public-Key Cryptography and RSA

  • Using OpenSSL to Create a Public/Private Key Pair
  • Using the RSA Asymmetric Algorithm

Cryptographic Hash Functions

  • Installing Windows Server Backup and Performing Backup of a Folder
  • Creating a Backup Schedule
  • Creating a Backup Once
  • Configuring RAID
  • Configuring RAID 5
  • Installing the Failover Cluster Feature
  • Using the Dependency Viewer

Cryptographic Key Management and Distribution

  • Using Steganography
  • Enabling a Keylogger in a Target Machine

IP Security

  • Adding Revision to the Revision History
  • Viewing and Downloading the Policy Templates
  • Opening the Policy Template and Setting the Company Name
  • Reviewing and Modifying the Policy Items

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In computer science, cryptography is the study and practice of maintaining secure communications using mathematical algorithms to disguise the message in the presence of threats.

Cryptography is important because it safeguards individuals and organizations against today’s cyber threats and information theft or loss.

Make Expert-Approved Cryptography and Network Security Notes

Learn advanced cryptography and network security techniques to disguise your sensitive information and fortify your organization’s defenses against notorious cyber attacks.  


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