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 - DES (DATA ENCRYPTION STANDARD) ALGORITHM

DES algorithm follows the Feistel Structure
Most of the Block cipher algorithms follows Feistel Structure

BLOCK SIZE - 64 bits Plain Text
No. of Rounds - 16 Rounds
Key Size - 64 bits
Sub Key Size - 48 bits
No. of Sub Keys - 16 Sub Keys
Cipher Text - 64 bits

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Computer and Network Security

NETWORK SECURITY - DES (DATA ENCRYPTION STANDARD) ALGORITHM

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