'Secret key cryptography' diaporamas de présentation

Electronic Commerce COMP3210

843 views • 72 slides

The Secrets of Keeping Secrets

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Fundamentals of Security in Communication Systems overview tutorial By Dr. Muhammad Elrabaa

Fundamentals of Security in Communication Systems overview tutorial By Dr. Muhammad Elrabaa. Outlines. The Story of Security Science Traditional Secret Key Systems Public Key Systems Protocols Identification Secrecy Modern Standards. Communication Security Objectives. Secrecy

706 views • 53 slides

Session 3

Session 3. Module 4: Java Security Module 5: Cryptography. Module 3 - Review (1). Scrollable result sets provide the ability to move the cursor forward and backward to a specified position or to a position relative to the current position

615 views • 45 slides

CRYPTOGRAPHY

CRYPTOGRAPHY. Presented by: Debi Prasad Mishra Institute of Technical Education & Reaserch Electronics & Telecommunication Engineering Section - A 7 th Semester Regd. No. - 0301212148. Talk Flow. Terminology Secret-key cryptographic system Block cipher Stream cipher

549 views • 45 slides

CRYPTOGRAPHY

CRYPTOGRAPHY. Presented by: Debi Prasad Mishra Institute of Technical Education & Reaserch Electronics & Telecommunication Engineering Section - A 7 th Semester Regd. No. - 0301212148. Talk Flow. Terminology Secret-key cryptographic system Block cipher Stream cipher

532 views • 45 slides

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.

659 views • 44 slides

Chapter 3: Secret Key Cryptography

Chapter 3: Secret Key Cryptography. CS 772/872: Fall 2005. General Block Encryption.

565 views • 41 slides

MAT 302: Algebraic Cryptography

MAT 302: Algebraic Cryptography. LECTURE 1. Jan 7, 2013. MAT 302: Cryptography from Euclid to Zero-Knowledge Proofs. LECTURE 1. Jan 7, 2013. Administrivia (see course info sheet). Instructor. Vinod Vaikuntanathan. 3073 CCT Building. first.last@utoronto.ca. Location & Hours.

409 views • 40 slides

Unit 1: Protection and Security for Grid Computing

Unit 1: Protection and Security for Grid Computing. Protection and security overview. We will cover a lot of things, including Basic concepts of cryptography Authentication in context of Grid Authorization in context of Grid

470 views • 38 slides

Web security

Web security. Applications. Email electronic commerce electronic voting homework submission E-bank Paper submission. Security Requirments. Authentication : identifying someone (or something) reliably. Proving you are who you say you are. Authorization : permission to access a resource.

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Cryptography Basics

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Cryptography Basics ( ch 2)

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CSC 774 Advanced Network Security

CSC 774 Advanced Network Security. Topic 2. Review of Cryptographic Techniques. Outline. Encryption/Decryption Digital signatures Hash functions One-way hash chain Merkle hash tree Pseudo random functions Key exchange/agreement/distribution. Encryption/Decryption.

427 views • 29 slides

Introduction to Cryptography (1)

Introduction to Cryptography (1). What is Cryptography. Cryptography In a narrow sense Mangling information into apparent unintelligibility Allowing a secret method of un-mangling In a broader sense Mathematical techniques related to information security

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Cryptography

Cryptography. CS 472 Fall 2006 . What is Cryptography?. Encrypting data so that unauthorized users cannot know the contents Purpose: Encryption of messages/data Integrity checking (Has the content been changed?) Authentication (Who had sent the message/data?).

352 views • 28 slides

Cryptography

Cryptography. What does it say?. Secrecy Ciphers Secret Key Cryptography Key Exchange Public Key Cryptography Digital Signatures Internet applications. Secrecy.

369 views • 21 slides

Introduction to Cryptography

Introduction to Cryptography. EE 5900 Fall 03. Outline. Introduction to Cryptography Secret Key Cryptography Public Key Cryptography Hash Algorithms. Cryptography: Definitions. Idea: process data into unintelligible (confidentiality) form, reversible , without data loss

660 views • 18 slides

Applied Cryptography

326 views • 14 slides

Applied Cryptography

315 views • 14 slides