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Internetwork Security

Internetwork Security. Instructor: Prof. Sourav Mukhopadhyay, Department of Mathematics, IIT Kharagpur. The aim of this course is to introduce the student to the areas of cryptography and cryptanalysis. This course develops a basic understanding of the algorithms used to protect users online and to understand some of the design choices behind these algorithms. Our aim is to develop a workable knowledge of the mathematics used in cryptology in this course. The course emphasizes to give a basic understanding of previous attacks on cryptosystems with the aim of preventing future attacks. (from nptel.ac.in)

Lecture 08 - Triple DES and Modes of Operation

Triple DES, Problem with Triple DES, Modes of Operation, ECB, Problem with ECB, CBC, CFB, OFB, CTR.

Go to the Course Home or watch other lectures:

Lecture 01 - Introduction to Cryptography

Lecture 02 - Classical Cryptosystem

Lecture 03 - Cryptanalysis on Substitution Cipher (Frequency Analysis)

Lecture 04 - Polyalphabetic Cipher, Playfair Cipher

Lecture 05 - Introduction to Block Cipher, Substitution and Permutation Network

Lecture 06 - Data Encryption Standard (DES)

Lecture 07 - DES (cont.)

Lecture 08 - Triple DES and Modes of Operation

Lecture 09 - Stream Cipher

Lecture 10 - Pseudorandom Sequence

Lecture 11 - LFSR based Stream Cipher

Lecture 12 - Mathematical Background: Abstract Algebra, Group

Lecture 13 - Abstract Algebra: Ring, Field

Lecture 14 - Number Theory

Lecture 15 - Number Theory: Euclidean Algorithm, Modular Arithmetic, Congruence Relation

Lecture 16 - Modular Inverse

Lecture 17 - Extended Euclidean Algorithm

Lecture 18 - Fermat's Little Theorem, Euler Pi-Function

Lecture 19 - Euler's Theorem, Quadratic Residue

Lecture 20 - Polynomial Arithmetic

Lecture 21 - Advanced Encryption Standard (AES)

Lecture 22 - AES: AES Sub Byte, Min Column, Key Scheduling Algorithm

Lecture 23 - Introduction to Public Key Cryptosystem, Diffie-Hellman Key Exchange

Lecture 24 - Knapsack Cryptosystem

Lecture 25 - RSA Cryptosystem

Lecture 26 - More on RSA

Lecture 27 - Primality Testing: Euler Test, Miller-Rabin Test, AKS Algorithms

Lecture 28 - ElGamal Cryptosystem

Lecture 29 - Elliptic Curve over the Reals

Lecture 30 - Elliptic Curve Modulo a Prime

Lecture 31 - Generalised ElGamal Public Key Cryptosystem

Lecture 32 - Chinese Remainder Theorem

Lecture 33 - Rabin Cryptosystem

Lecture 34 - Legendre and Jacobi Symbol

Lecture 35 - Jacobi Symbol (cont.)

Lecture 36 - Message Authentication

Lecture 37 - Digital Signature Scheme: RSA Signature Scheme, ElGamal Signature Scheme

Lecture 38 - Key Management

Lecture 39 - Key Exchange

Lecture 40 - Hash Function

Lecture 41 - Universal Hashing

Lecture 42 - Cryptographic Hash Function

Lecture 43 - Secure Hash Algorithm (SHA)

Lecture 44 - Digital Signature Standard (DSS)

Lecture 45 - More on Key Exchange Protocol

Lecture 46 - Cryptanalysis

Lecture 47 - Time-Memory Trade-off Attack

Lecture 48 - Differential Cryptanalysis

Lecture 49 - More on Differential Cryptanalysis

Lecture 50 - Linear Cryptanalysis

Lecture 51 - Cryptanalysis on Stream Cipher

Lecture 52 - Modern Stream Ciphers

Lecture 53 - Shamir's Secret Sharing and BE (Broadcast Encryption)

Lecture 54 - Identity based Encryption (IBE)

Lecture 55 - Attribute based Encryption (ABE)

Lecture 56 - Functional Encryption

Lecture 57 - Solving Discrete Log Problem

Lecture 58 - Implementation Attacks: Side Channel Attack, Power Analysis, Timing Attack

Lecture 59 - The Secure Sockets Layer

Lecture 60 - Pretty Good Privacy, Email security