Cryptography And Network Security Atul Kahate Ppt ●

Based on the textbook by Atul Kahate

: Introduction to modern asymmetric cryptography offering equivalent security to RSA with significantly smaller key sizes. Module 4: Data Integrity and Authentication

Laws demand robust data protection strategies. The OSI Security Architecture Standard framework: Created by ITU-T under X.800.

| | Topic Area | Key Concepts Covered | | ------------ | ------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Part 1 | Introduction to Security Concepts | Core security principles (confidentiality, integrity, availability, authentication, non-repudiation, access control), various security attacks, services, and security mechanisms. | | Part 2 | Cryptography Techniques | Plain text, cipher text, substitution and transposition techniques, and classic ciphers like Caesar and Vernam. | | Part 3 | Symmetric Key Algorithms & AES | Detailed study of symmetric encryption, including the Data Encryption Standard (DES) and its more secure successor, the Advanced Encryption Standard (AES). | | Part 4 | Asymmetric Key Algorithms, Digital Signatures, & RSA | The revolutionary concept of public-key cryptography, focusing on the RSA algorithm, its mathematical underpinnings, and its use in creating digital signatures. | | Part 5 | Public Key Infrastructure (PKI) | The framework for managing digital certificates and public-key encryption, enabling secure electronic transactions. | | Part 6 | Internet Security Protocols | Application-layer security protocols like Secure Sockets Layer (SSL), Transport Layer Security (TLS), and Secure Electronic Transaction (SET) for e-commerce. | | Part 7 | User Authentication & Kerberos | Methods for verifying user identity, including a deep dive into the Kerberos network authentication protocol. | | Part 8 | Practical Cryptography Implementations | How cryptographic concepts are applied in real-world programming environments like Java and .NET, and within operating systems. | | Part 9 | Network Security, Firewalls, & VPNs | Defensive technologies used to protect networks, including firewalls for filtering traffic and Virtual Private Networks (VPNs) for secure remote access. | | Part 10 | Case Studies | In-depth examples that tie together the concepts from the book in real-world cybersecurity scenarios. |

ECB, CBC, CFB, OFB, and CTR modes. Module 4: Public Key Cryptography (Asymmetric) cryptography and network security atul kahate ppt

Added robust protection against brute-force guessing. Electronic Mail Security

This protocol allows two parties to establish a shared secret key over an insecure channel without prior knowledge of each other. It is fundamental for setting up secure session keys in protocols like SSL/TLS.

MD5 and Secure Hash Algorithm (SHA) families.

Broken RC4 stream cipher implementations failed. WPA upgrades: Introduced TKIP to rotate keys dynamically. Based on the textbook by Atul Kahate :

Differential attacks require choosing specific plaintexts. Block Cipher Design Principles

The revolutionary shift to two keys (public and private).

Rearranging the order of characters without changing the actual characters themselves (e.g., Rail Fence Cipher, Row Transposition). Modern Symmetric Block Ciphers

Uses prime numbers and primitive roots mathematically. | | Topic Area | Key Concepts Covered

– Overview of TLS/SSL, IPsec VPN architecture, and Firewalls. Slide 23: Summary & Q&A – Key takeaways.

Recipient decrypts hash with public key.

Before diving into the slides, it is important to understand why the book translates so well into presentations.

Makes relationship between key and ciphertext complex.