'Public key algorithm' diaporamas de présentation

A Look at Globus Grids

A Look at Globus Grids. Leesa Brieger. What is a GRID?. A GRID must: Coordinate resources that are not under centralized control Use standard, open, general-purpose protocols and interfaces Deliver non-trivial quality of service. Not a grid:. a cluster a network

825 views • 70 slides

IS 2150 / TEL 2810 Introduction to Security

IS 2150 / TEL 2810 Introduction to Security. James Joshi Associate Professor, SIS Lecture 8 Nov 10, 2009 Key Management Network Security. Objectives. Understand/explain the issues related to, and utilize the techniques Key management Authentication and distribution of keys

655 views • 65 slides

Cryptography

Cryptography. Basic goal: design procedures to transform messages (plaintext) into cryptograms (ciphertext). withstand intense cryptoanalysis for recovering the original plaintext. Basic approach: code system: text content depending on the size of code book.

581 views • 52 slides

Cyber Attacks and Cryptography Overview

Cyber Attacks and Cryptography Overview. Security Objectives. How can we define these concepts wrt . the Internet?. Confidentiality Integrity Availability Authentication Non-repudiation. Types of Attacks (1).

880 views • 48 slides

Key Management and Identity

Key Management and Identity. CS461/ECE422 Spring 2012. Reading Material. Chapters 2 and 23 from text Handbook of Applied Cryptography http://www.cacr.math.uwaterloo.ca/hac/ Chapter 5 for information on Pseudorandom sequences Chapter 12 for Needham-Schroeder protocol

438 views • 43 slides

Chapter 9: Key Management

Chapter 9: Key Management. Session and Interchange Keys Key Exchange Cryptographic Key Infrastructure Storing and Revoking Keys Digital Signatures. Overview. Key exchange Session vs. interchange keys Classical, public key methods Cryptographic key infrastructure Certificates

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Computer and Internet Security

Computer and Internet Security. Introduction. Both individuals and companies are vulnerable to data theft and hacker attacks that can compromise data, corrupt files and crash systems. For these reasons, security is crucial to the success of e-business and Web services. Introduction.

517 views • 41 slides

Presentation on HKU Grid CA

Presentation on HKU Grid CA Mr. Frankie F. T. Cheung HPC Team Computer Centre The University of Hong Kong E-mail: ftcheung@hku.hk Agenda (HKU Grid CA) 0. Introduction 1. CP/CPS 2. CA System 3. CA private key 4. CA certificate 5. Certificate Revocation 6. Certificate Revocation List

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CS 5920 Applied Cryptography Spring 2014 Chapter 9 Public Key Cryptography and RSA

CS 5920 Applied Cryptography Spring 2014 Chapter 9 Public Key Cryptography and RSA. Cryptography and Network Security Fifth Edition, by William Stallings . Secret-Key Cryptography. traditional symmetric/secret/single key cryptography uses one key shared by both sender and receiver

774 views • 36 slides

Chapter 21

Chapter 21. Public -Key Cryptography and Message Authentication. Secure Hash Algorithm (SHA). SHA was originally developed by NIST P ublished as FIPS 180 in 1993 W as revised in 1995 as SHA-1 Produces 160-bit hash values NIST issued revised FIPS 180-2 in 2002

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Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)

Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Summary of WPAN Security Proposal] Date Submitted: [22 February, 2002] Source: [Dr. Matthew Welborn] Company [XtremeSpectrum, Inc.] Address [8133 Leesburg Pike, Ste. 700, Vienna, VA, 22180]

253 views • 18 slides

RSA

RSA. By: Abhishek Naik Viswanath Chennuru CPSC 624. Contents. What is Encryption ? What is RSA ? Key Generation Encryption and Decryption Applications Attacks on RSA Conclusion. What is encryption ?.

368 views • 17 slides

Chapter 3 Encryption Algorithms & Systems (Part C)

Chapter 3 Encryption Algorithms & Systems (Part C). Outline. NP-completeness & Encryption Symmetric (secret key) vs Asymmetric (public key) Encryptions Popular Encryption Algorithms Merkle-Hellman Knapsacks RSA Encryption El Gamal Algorithms DES Hashing Algorithms Key Escrow & Clipper.

295 views • 17 slides

Implementing a 1024-bit RSA on FPGA

Implementing a 1024-bit RSA on FPGA. Jing Lu Qian Wan. Outline. Motivation System Architecture Implementation Testing. Motivation. Network hosts and devices are threatened by virus, worms, and all sorts of attacks

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Attacks on Digital Signature Algorithm: RSA

392 views • 12 slides