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Lecture Data security and encryption - Lecture 27: Malicious Software

The contents of this chapter include all of the following: problem of intrusion, behavior and techniques; intrusion detection (statistical & rule-based); password management; various malicious programs; trapdoor, logic bomb, trojan horse, zombie; viruses; worms; distributed denial of service attacks.


Lecture Data security and encryption - Lecture 14: Stream Ciphers and Random Number Generation

The comparatively late rise of the theory of probability shows how hard it is to grasp, and the many paradoxes show clearly that we, as humans, lack a well grounded intuition in this matter. In probability theory there is a great deal of art in setting up the model, in solving the problem, and in applying the results back to the real world actions that will follow.


Lecture Data security and encryption - Lecture 15: Public Key Cryptography

The development of public-key cryptography is the greatest and perhaps the only true revolution in the entire history of cryptography. From its earliest beginnings to modern times, virtually all cryptographic systems have been based on the elementary tools of substitution and permutation, and can be classed as private/secret/single key (symmetric) systems. All classical, and modern block and stream ciphers are of this form.


Lecture Data security and encryption - Lecture 7: Data encryption standard (DES)

This chapter presents the following content: Data encryption standard (DES), DES history, DES design controversy, DES encryption overview, initial permutation IP, DES round structure, substitution boxes S, DES key schedule, DES decryption, avalanche in DES, avalanche effect, strength of DES – Timing attacks.


Lecture Data security and encryption - Lecture 4: Classical Encryption Techniques

This chapter presents the following content: Classical cipher techniques and terminology, brute force, cryptanalysis of brute force, caesar cipher, cryptanalysis of caesar cipher, monoalphabetic substitution ciphers, playfair cipher, polyalphabetic ciphers, vigenère cipher.


Lecture Data security and encryption - Lecture 3: Classical Encryption Techniques

This chapter presents the following content: Models for network (access) security, classical encryption techniques, symmetric cipher model, have considered, classical cipher techniques and terminology, brute force, cryptanalysis of brute force, caesar cipher, cryptanalysis of caesar cipher.


Lecture Data security and encryption - Lecture 30: Privacy and Ethical Aspects

The contents of this chapter include all of the following: Cybercrime and computer crime, EU privacy law, US privacy law, intellectual property issues, cybercrime and computer crime, intellectual property issues, privacy, ethical issues.


Lecture Data security and encryption - Lecture 25: IP security

The contents of this chapter include all of the following: IPSec security framework, IPSec security policy, ESP, combining security associations, internet key exchange, cryptographic suites used, secure email, PGP, S/MIME, domain-keys identified email.


Lecture Data security and encryption - Lecture 16: RSA

The contents of this chapter include all of the following: principles of public-key cryptography, RSA en/decryption, RSA key setup, why RSA works, exponentiation, efficient encryption, efficient decryption, RSA key generation, RSA security, factoring problem, progress in factoring.


Lecture Data security and encryption - Lecture 18: Hash Function

The contents of this chapter include all of the following: Hash functions, cryptographic hash function, hash functions & message authentication, hash functions & digital signatures, other hash function uses, two simple insecure hash functions, attacks on hash functions.


Lecture Data security and encryption - Lecture 12: Number Theory and Finite Fields

This chapter presents the following content: Number theory, divisibility & GCD, modular arithmetic with integers, Euclid’s algorithm for GCD & inverse, Group, Ring, Field, finite fields GF(p), polynomial arithmetic in general and in GF(2n).


Lecture Data security and encryption - Lecture 9: AES

This chapter presents the following content: Data encryption standard (DES), strengths of DES, differential & linear cryptanalysis, block cipher design principles, the AES selection process, the details of Rijndael – the AES cipher, looked at the steps in each round.


Lecture Network security: Chapter 1 - Dr. Munam Ali Shah

This chapter provides knowledge of network security. In this chapter students will be able to: provide a survey and exposure of both principles and practice of network security; determine threats to a network and how to protect organization’s systems and data from attacks. This chapter will also help you understand and learn counter measures used to prevent, detect and correct security violations in a computer network.


Lecture Network security: Chapter 2 - Dr. Munam Ali Shah

In this chapter, the following content will be discussed: Hackers and attackers; threats, risks, vulnerabilities and attacks; why is security difficult to achieve; threat modelling and risk assessment.


Lecture Network security: Chapter 24 - Dr. Munam Ali Shah

In this chapter: We will continue our discussion on Needham-Schroeder Protocol and will see how does it work, digital signature standard (DSS) and digital signature algorithm (DSA) will be discussed, we will talk about authentication applications, and will study kerberos which is an authentication service developed at MIT.


Lecture Network security: Chapter 9 - Dr. Munam Ali Shah

This chapter we will continue our discussion on mobile device security, robust security network (RSN) and IEEE802.11i network security model. After completing this unit, you should be able to present an overview of security threats and countermeasures for mobile networks, understand the basics of IEEE802.11i standard for robust security, describe the principal elements for a network security model.


Lecture Network security: Chapter 11 - Dr. Munam Ali Shah

The topic discussed in this chapter are cryptography as a network security tool. In this chapter we will talk about 3-Dimesions of cryptography; cryptanalysis and brute force attacks; classical ciphers: substitution cipher, transposition cipher.


Lecture Network security: Chapter 25 - Dr. Munam Ali Shah

This chapter we will continue our discussion on authentication applications and more precisely we will talk about kerberos in detail. kerberos versions, threats and vulnerabilities will also be discussed.


Lecture Network security: Chapter 16 - Dr. Munam Ali Shah

The topics discussed in this chapter are stream cipher features and characteristics; we will explore RC4, RC5, blowfish and triple DES. After studying this chapter you will be able to present an understanding of the principles for stream and block ciphers, use and understand the different techniques used for stream ciphers.


Lecture Network security: Chapter 4 - Dr. Munam Ali Shah

In this chapter, the following content will be discussed: Security through obscurity, aspects of security, OSI security architecture, active and passive attacks, protection and access rights. After studying this chapter you will be able to describe the difference between security and protection, to understand access privileges and create access right metrix, to understand how different security tools be used.


Lecture Network security: Chapter 29 - Dr. Munam Ali Shah

The topic discussed in this chapter are email security, pretty good privacy, secure/multipurpose internet mail extensions (S/MIME). In this chapter you would be able to present an understanding of how to secure email over the internet, you would be able demonstrate knowledge about PGP and its operation.


Lecture Network security: Chapter 8 - Dr. Munam Ali Shah

The topic discussed in this chapter are internet security, wwireless security. After studying this chapter you will be able to present an overview of security threats and countermeasures for wireless networks, understand the unique security threats posed by the use of mobile devices with enterprise networks.


Lecture Network security: Chapter 13 - Dr. Munam Ali Shah

The topics discussed in this chapter are: Our discussion on more cryptographic schemes will continue, poly-alphabetic cipher will also be discussed, we will explore one time pad and OTP, the security and practicality of OTP will also be discussed, transposition cipher with an example of rail fence cipher will form part of our today’s lecture.


Lecture Network security: Chapter 20 - Dr. Munam Ali Shah

In this chapter, we will talk about confidentiality using symmetric encryption, we will also explore link vs. end to end encryption, key distribution design constraints will be explored.


Lecture Network security: Chapter 21 - Dr. Munam Ali Shah

In this chapter, you will learn: Key distribution mechanism will be discuss in detail, the role of a KDC (key distribution center), key distribution design constraints will be explored. In this chapter students will be able to present an understanding of the confidentiality using symmetric encryption, demonstrate knowledge about the key distribution.


Lecture Network security: Chapter 26 - Dr. Munam Ali Shah

The learning objectives for this chapter include: You would be able to present an understanding of transaction that is carried out over the internet, you would be able demonstrate knowledge about different entities and their role in a SET.


Lecture Network security: Chapter 22 - Dr. Munam Ali Shah

In this chapter you would be able to present an understanding of the confidentiality and message authentication mechanism, you would be able demonstrate knowledge about different functions and protocols used for message authentication.


Lecture Network security: Chapter 19 - Dr. Munam Ali Shah

The topic discussed in this chapter are: Attacks on pseudorandom generators, tests for pseudorandom functions, true random generators. After studying this chapter you will be able to present an understanding of the random numbers and pseudorandom numbers; understand the use and implementation of TRNG, PRNG and PRF.


Lecture Network security: Chapter 31 - Dr. Munam Ali Shah

This is the last part of the course. The main concepts that are discussed in this part are: Tools and techniques to protect data during the transmission over the Internet, Sobig F. worm, grappling Hook attack, Morris Internet worm, Overview of the Internet security protocols such as https and ssh.


Lecture Network security: Chapter 17 - Dr. Munam Ali Shah

The topic discussed in this chapter are: We will explore the need, features and characteristics of public key cryptography; the working/function of a public key cryptography scheme will be discussed in detail; RSA, as an example, will be explained.


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