'International data encryption algorithm' diaporamas de présentation

Chapter 8 - Cryptography

1.85k views • 105 slides

Security Basics (Cryptography)

Security Basics (Cryptography). SSE USTC Qing Ding. Agenda. What is and Why network security? What security services do we need? Cryptographic process Public key vs. Secret key scheme Digital signing, Tamper-proofing & Encrypting Security (Cryptographic) technologies

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E-Commerce: Security Challenges and Solutions

E-Commerce: Security Challenges and Solutions. Dr. Khalid Al-Tawil. College of Computer Sciences & Engineering. King Fahd University of Petroleum and Minerals. Outline of the Presentation. Internet Security Cryptography Firewalls E-Commerce Challenges E-Commerce Security

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Security+ Guide to Network Security Fundamentals, Third Edition

Security+ Guide to Network Security Fundamentals, Third Edition. Chapter 11 Basic Cryptography. Defining Cryptography. Objectives. Define cryptography Describe hashing List the basic symmetric cryptographic algorithms Describe how asymmetric cryptography works

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Security+ Guide to Network Security Fundamentals, Third Edition

Security+ Guide to Network Security Fundamentals, Third Edition. Chapter 11 Basic Cryptography. Objectives. Define cryptography Describe hashing List the basic symmetric cryptographic algorithms. Objectives (continued). Describe how asymmetric cryptography works

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Cryptography

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Chapter 8: Scrambling Through Cryptography

Chapter 8: Scrambling Through Cryptography. Security+ Guide to Network Security Fundamentals Second Edition. Objectives. Define cryptography Secure with cryptography hashing algorithms Protect with symmetric encryption algorithms Harden with asymmetric encryption algorithms

690 views • 46 slides

Residue Number systems

Residue Number systems. P.V. Ananda Mohan FNAE, Fellow IEEE pvam@vsnl.net IEEE CAS Chapter 8 th March 2008 Bangalore. Binary to RNS converter. Binary to RNS converter. Binary to RNS converter. Why RNS. Input Binary Number.

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ECE454/599 Computer and Network Security

ECE454/599 Computer and Network Security. Dr. Jinyuan (Stella) Sun Dept. of Electrical Engineering and Computer Science University of Tennessee Fall 2012. Secret Key Cryptography. Block cipher DES 3DES AES. Generic Block Encryption.

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E1. Security

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Ch 3: Block Ciphers and the Data Encryption Standard

Information and Network Security. Ch 3: Block Ciphers and the Data Encryption Standard. Modern Block Ciphers. will now look at modern block ciphers one of the most widely used types of cryptographic algorithms provide secrecy and/or authentication services

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Network Security

Network Security. Lecture 2 Secret Key Cryptography http://web.uettaxila.edu.pk/CMS/coeCCNbsSp09/index.asp. Waleed Ejaz waleed.ejaz@uettaxila.edu.pk. Overview. Cryptography Data Encryption Standard (DES) International Data Encryption Algorithm (IDEA) Advanced Encryption Standard (AES)

516 views • 39 slides

Ch 3: Block Ciphers and the Data Encryption Standard

Information and Network Security. Ch 3: Block Ciphers and the Data Encryption Standard. Modern Block Ciphers. will now look at modern block ciphers one of the most widely used types of cryptographic algorithms provide secrecy and/or authentication services

562 views • 39 slides

CRYPTOGRAPHY AND INFORMATION SECURITY

CRYPTOGRAPHY AND INFORMATION SECURITY. Lecturer: Dr. Nguyen Nam Hong Tel.: 048781437. Mob.: 0912312816. Email: nguyennamhong2003@yahoo.com.au Website: www.freewebs.com/namhongthanhloc Chapter 7. Contemporary Symmetric Ciphers. Chapter 7. Contemporary Symmetric Ciphers (1/3).

531 views • 32 slides

Chapter 9: Using and Managing Keys

Chapter 9: Using and Managing Keys. Security+ Guide to Network Security Fundamentals Second Edition. Objectives. Explain cryptography strengths and vulnerabilities Define public key infrastructure (PKI) Manage digital certificates Explore key management.

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Security

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Data Compression and Security

Data Compression and Security. Chapter 20, Exploring the Digital Domain. Digital Compression Concepts. Compression techniques are used to replace a file with another that is smaller Decompression techniques expands the compressed file to recover original data -- exactly or in facsimile

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CRYPTOSYSTEM DESIGN AND AES

CRYPTOSYSTEM DESIGN AND AES. Cryptosystem Design. With cryptosystems, we desire perfect secrecy : the probability that the contents of some intercepted data corresponds to some plaintext message is unaltered by knowledge of the ciphertext for that message.

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Encryption Methods

Encryption Methods. By: Michael A. Scott 20140508. There are three basic encryption methods: Hashing S ymmetric cryptography A symmetric cryptography . Each of these encryption methods have their own uses, advantages, and disadvantages.

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The beauty of modulo math!

The beauty of modulo math!. Overview of Cryptography What is Cryptography?.

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