Cryptography And Network Security Atul Kahate Ppt Fixed Here

Cryptography is the practice and study of techniques for secure communication in the presence of third-party adversaries. It involves the use of algorithms and protocols to protect data confidentiality, integrity, and authenticity. Network security, on the other hand, refers to the practices and technologies designed to protect computer networks from unauthorized access, use, disclosure, disruption, modification, or destruction. cryptography and network security atul kahate ppt

’s widely used textbook and related presentation materials covers the fundamental mechanics of securing data in transit and at rest. 1. Introduction to Security Basics Based on the curriculum and structure of Atul

• Confidentiality: Cryptography (AES, RSA) ensures data is readable only by authorized parties.
• Integrity: Hashing algorithms (SHA) ensure data is not tampered with during transit.
• Availability: Network defense mechanisms ensure systems remain accessible.

1. Encryption: The process of converting plaintext into ciphertext to protect it from unauthorized access.
2. Digital Signatures: A technique used to authenticate the sender of a message and ensure the integrity of the data.
3. Firewalls: Network security systems that control incoming and outgoing network traffic based on predetermined security rules.
4. Virtual Private Networks (VPNs): Networks that use encryption and other security measures to protect data transmitted over the internet.

Module 3: Asymmetric Cryptography