Computer and Network Security

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Course content

Lecture 1
- Course Synopsis of Computer and Network security
- Refereed e-Book of Computer and Network security
  - Refereed e-Book of Computer and Network security
- Syllabus of Computer and Network Security
- Previous NU Board question of Network security
  - Previous NU Board question of Network security
- PowerPoint Slide of Chapter 1: Introduction
  - PowerPoint Slide of Chapter 1: Introduction
- NETWORK SECURITY - BASIC CONCEPTS
- Tahmina Aktar Trisha-DIIT- Security Goals and Threats
- Network Security Demonstrate by--Cisco
  - Network Security Demonstrate by--Cisco
- Recent Network Security Articles
  - Recent Network Security Articles
Lecture 2 : Network Security and Access model
- PowerPoint Slide of Chapter 1: Network security model
  - PowerPoint Slide of Chapter 1: Network security model
- Network Security Model Explained Easily
- Quiz 1: Chapter 1
- Trisha's Hand notes on- Chapter 1- Introduction
  - Trisha's Hand notes on- Chapter 1- Introduction
- Sample Mid Term Question- Network Security
- Tahmina Aktar Trisha-DIIT- Network Security- Active and Passive attacks
- Video on Security Attacks
  - Video on Security Attacks
- Class Recorded on Conducted Quiz 1
  - Class Recorded on Conducted Quiz 1
Lecture 3 : Cryptography
- PowerPoint Slide of Chapter : 2 Cryptography
  - PowerPoint Slide of Chapter : 2 Cryptography
- Public Key Cryptography - Computerphile
- Symmetric Key and Public Key Encryption
- Trisha's- Hand notes on- Chapter 2- Classical Encryption Technique
  - Trisha's- Hand notes on- Chapter 2- Classical Encryption Technique
- Research on Unshared Secret Key Cryptography
  - Research on Unshared Secret Key Cryptography
Lecture 4: Poly alphabetic, Mono Alphabetic, Hill Ciphers
- PowerPoint Slide of Chapter : 2 Cryptography
  - PowerPoint Slide of Chapter : 2 Cryptography
- Polyalphabetic Substitution Cipher explained step by step with example !!!
- Playfair Cipher || Network Security in Bangla || How to convert Plaintext into Cipher text in bangla
- hill cipher decryption 3×3 matrix
- One time pad Cipher (Vernam Cipher)
- Trisha's- Hand notes on- Chapter 2- Ciphers
  - Trisha's- Hand notes on- Chapter 2- Ciphers
Lecture 5: Block Ciphers and Encryption standard method
- PowerPoint slide of Chapter 3: Block Cipher and DES
  - PowerPoint slide of Chapter 3: Block Cipher and DES
- Quiz 2: Chapter 2
  - Quiz 2: Chapter 2
- NETWORK SECURITY - DES (DATA ENCRYPTION STANDARD) ALGORITHM
- Feistel Cipher - Computerphile
- Published Research on DES
  - Published Research on DES
- Trisha's Hand notes on- Chapter 3- Block cipher & Data encryption standard
  - Trisha's Hand notes on- Chapter 3- Block cipher & Data encryption standard
- Class Recorded on Conducted Quiz 2
  - Class Recorded on Conducted Quiz 2
- NETWORK SECURITY - FEISTEL STRUCTURE
- DES encryption animation and example part 4(DES)
Lecture 6: Double DES
- Recorded Link of Class on Double DES
  - Recorded Link of Class on Double DES
- PowerPoint slide of Chapter 6: Double DES
  - PowerPoint slide of Chapter 6: Double DES
- S Box (Substitution Box)
- S-Box Theory
- Trisha's Hand notes on- Chapter 6- More on Symmetric ciphers
  - Trisha's Hand notes on- Chapter 6- More on Symmetric ciphers
- Recorded Link of Conducted demo Quiz
  - Recorded Link of Conducted demo Quiz
Lecture 7: Block cipher modes of operation
- PowerPoint Slide of Chapter 6: Block Cipher Modes
  - PowerPoint Slide of Chapter 6: Block Cipher Modes
- NETWORK SECURITY - BLOCK CIPHER MODES OF OPERATION
- Research on Block Cipher modes
  - Research on Block Cipher modes
- Recorded Link of Class on Block Cipher Modes of operation
  - Class on Block Cipher modes of operation
- Trisha's Hand notes on- Chapter 6- Block ciphers Modes
  - Trisha's Hand notes on- Chapter 6- Block ciphers Modes
Lecture 8: Confidentiality using Symmetric Encryption
- PowerPoint Slide of Chapter 7: Confidentiality using symmetric Encryption
  - PowerPoint Slide of Chapter 7: Confidentiality using symmetric Encryption
- Session Keys
- Recorded Link of Class on Link & end-to-end encryption
  - Recorded Link of Class on Link & end-to-end encryption
- Link encryption vs. End to end encryption
- Trisha's Hand notes on- Chapter 7- Confidentiality using symmetric encryption
  - Trisha's Hand notes on- Chapter 7- Confidentiality using symmetric encryption
Lecture 9: Key Distribution scenario
- PowerPoint Slide of Chapter 7: Key distribution Scenario
  - PowerPoint Slide of Chapter 7: Key distribution Scenario
- NETWORK SECURITY - PUBLIC KEY DISTRIBUTION
- Trisha's Hand notes on- Chapter 7- Public Key Distribution
  - Trisha's Hand notes on- Chapter 7- Public Key Distribution
- Wireless Authentication and Key Generation
- Recorded Link of class on key distribution
  - Recorded Link of class on key distribution
- Research on Key distribution
  - Research on Key distribution
Lecture 10: RSA Algorithm
- PowerPoint Slide of Chapter 9: Public Key cryptography & RSA
  - PowerPoint Slide of Chapter 9: Public Key cryptography & RSA
- The Practice of RSA Algorithm
- NETWORK SECURITY - RSA ALGORITHM
- Trisha's Hand notes on- Chapter 9- Public Key cryptography & RSA
  - Trisha's Hand notes on- Chapter 9- Public Key cryptography & RSA
- Assignment on RSA Algorithm
  - Assignment on RSA Algorithm
- Recorded Link of Class on RSA Algorithm
  - Recorded Link of Class on RSA Algorithm
- Research Article on RSA Algorithm
Lecture 11: Key Management
- PowerPoint Slide of Chapter 10: Key Management
  - PowerPoint Slide of Chapter 10: Key Management
- Public Key Distribution - Public Key Authority and Public Key Certificate
- Recorded Link of Class on public key authority
  - Recorded Link of Class on public key authority
- Trisha's Hand notes on- Chapter 10- Key Management Document
  - Trisha's Hand notes on- Chapter 10- Key Management Document
- X.509 AUTHENTICATION SERVICE PART 1 - NETWORK SECURITY
- Research on Digital signature
- The Key authority - secure key management
  - The Key authority - secure key management
Lecture 12: Diffie Hellman Key exchange algorithm
- PowerPoint Slide chapter 10: Diffie Hellman Algorithm
  - PowerPoint Slide chapter 10: Diffie Hellman Algorithm
- Trisha's Hand notes on- Chapter 10- Diffie Hellman Algorithm
  - Trisha's Hand notes on- Chapter 10- Diffie Hellman Algorithm
- Research article on Diffie Hellman Algorithm
  - Research article on Diffie Hellman Algorithm
- Recorded Link of Class on Diffie Hellman Algorithm
  - Recorded Link of Class on Diffie Hellman Algorithm
- NETWORK SECURITY - DIFFIE HELLMAN KEY EXCHANGE ALGORITHM
- Mathematical Practice on Diffie Hellman Key Exchange Algorithm
- Assignment on Diffie Hellman key exchange algorithm
Lecture 13: Man in the Middle attack
- NETWORK SECURITY - TYPES OF AUTHENTICATION (Message Encryption, MAC, Hash Functions)
- PowerPoint Slide chapter 10: Man in the Middle attack
  - PowerPoint Slide chapter 10: Man in the Middle attack
- Recorded Link of class on man-in-the middle attack
  - Recorded Link of class on man-in-the middle attack
- What Is A Man-in-the-Middle Attack?
- Formulation on Man-in-the Middle attack
- Man-in-the-Middle Attacks - NS-video
Lecture 14: MAC ad Hash function
- PowerPoint Slide chapter 11: MAC & Hash function
  - PowerPoint Slide chapter 11: MAC & Hash function
- Trisha's Hand notes on- Chapter 11- MAC & Hash Function
  - Trisha's Hand notes on- Chapter 11- MAC & Hash Function
- Recorded Link of class on hash function
  - Recorded Link of class on hash function
- Message Authentication Code
  - Message Authentication Code
Lecture 15: SHA Algorithm
- PowerPoint Slide chapter 12: SHA Algorithms
  - PowerPoint Slide chapter 12: SHA Algorithms
- NETWORK SECURITY - SHA 512 (AUTHENTICATION ALGORITHM)
- NETWORK SECURITY - MD5 ALGORITHM
Lecture 16 : Digital signatures
- PowerPoint Slide chapter 13: Digital signatures & Authentication Protocols
  - PowerPoint Slide chapter 13: Digital signatures & Authentication Protocols
- NETWORK SECURITY - DIGITAL SIGNATURE ALGORITHM (DSA)
- Trisha's Hand notes on- Chapter 13: Digital Signature
  - Trisha's Hand notes on- Chapter 13: Digital Signature
Lecturer 17: Electronic Mail Security
- PowerPoint Slide chapter 15: Electronic mail security
  - PowerPoint Slide chapter 15: Electronic mail security
- NETWORK SECURITY - PGP (E-MAIL SECURITY)
- Trisha's Hand notes on- Chapter 15: Electronic mail security
  - Trisha's Hand notes on- Chapter 15: Electronic mail security
- NETWORK SECURITY - KERBEROS (AUTHENTICATION APPLICATION)
- PGP Encryption
  - PGP Encryption
Lecture 18: IP Security
- PowerPoint Slide chapter 15: IP Security
  - PowerPoint Slide chapter 15: IP Security
- X.509 AUTHENTICATION SERVICE PART 2 - NETWORK SECURITY
- NETWORK SECURITY - IP SECURITY PART 1 (AUTHENTICATION HEADER)
- NETWORK SECURITY - IP SECURITY PART 2 (ENCAPSULATING SECURITY PAYLOAD)
Lecture 19: Firewall
- PowerPoint Slide chapter 19: Firewall
  - PowerPoint Slide chapter 19: Firewall
- How firewalls work | Network firewall security | firewall security | TechTerms
- Firewalls and Network Security - Information Security
- Firewall limitations - Software and Hardware - Disadvantages| Network Security | TechTerms
- CHAPTER 12 FIREWALL Networking Basic
Skill Development
- How to Design Cartoon Character in PowerPoint
- Skill Development with GoEdu
- Language Learning with DJIT
  - Language Learning with DJIT

NETWORK SECURITY - FEISTEL STRUCTURE

FEISTEL STRUCTURE
Most of the block ciphers follows the Feistel Structure.
Plain text is processed in terms of blocks
Plain text is divided into two equal halves
Plain text is processed in number of rounds
Sub Keys are generated for each round.

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Computer and Network Security

NETWORK SECURITY - FEISTEL STRUCTURE

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