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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 51 - Cryptanalysis on Stream Cipher

LFSR based stream ciphers, linear, nonlinear, algebraic attack.

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