'Secret key encryption' diaporamas de présentation

Security Overview

Security Overview. Security Objectives. Confidentiality : prevent/detect/deter improper disclosure of information Integrity : prevent/detect/deter improper modification of information Availability : prevent/detect/deter improper denial of access to services. Distributed applications.

1.15k views • 95 slides

95-702 Distributed Systems

95-702 Distributed Systems. Lecture 13: Security. Computer Security. Needed because of the desire to share resources. Security policies are enforced by security mechanisms. Cryptography provides the basis for most security mechanisms but is a distinct subject.

966 views • 80 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

1.09k views • 79 slides

Security in Computer Networks

Security in Computer Networks. Raj Jain Washington University in Saint Louis Saint Louis, MO 63130 Jain@wustl.edu Audio/Video recordings of this lecture are available on-line at: http://www.cse.wustl.edu/~jain/cse473-09/. Overview. Secret Key Encryption Public Key Encryption Hash Functions

885 views • 74 slides

Cryptography 1

Cryptography 1. Cyber Attacks Cryptography Terminology Secret-Key Encryption. Reading Assignment. Reading assignments for this lecture Required: Pfleeger: Ch 2 Recommended: C. Dupuis, A Short History of Cryptography, http://jproc.ca/crypto/crypto_hist.html

608 views • 60 slides

CIS*6650.01 Service-Oriented Computing

CIS*6650.01 Service-Oriented Computing. Qusay H. Mahmoud, Ph.D. qmahmoud@uoguelph.ca. Securing Web Services. Security and Protection Cryptography Encryption/Decryption Digital signatures Certificates Message digests SSL and Web services Standards for securing Web services.

618 views • 49 slides

Chapter 9 - Control in Computerized Environment

586 views • 43 slides

Chin-Chih Chang chang@cs.twsu

545 views • 42 slides

Cryptography

501 views • 39 slides

Cryptography

Cryptography. Comes from the Greek words for secret and writing In reality, it is the art of mangling data into apparently something unintelligible and allowing for a secret method of unmangling.

629 views • 36 slides

Security in Computer Networks

Security in Computer Networks. Raj Jain Washington University in Saint Louis Saint Louis, MO 63130 Jain@wustl.edu Audio/Video recordings of this lecture are available on-line at: http://www.cse.wustl.edu/~jain/cse473-11/. Overview. Secret Key Encryption Public Key Encryption

535 views • 26 slides

265 views • 26 slides

Security

362 views • 24 slides

Security

246 views • 24 slides

226 views • 22 slides

Security

Security. Defending Intellectual Property. Agenda. Hacker Anatomy Risks Categories of Security Tools. Anatomy of a Hacker. Motives Challenge / Fame Disgruntled Gamer Cost / experience Profit Skill Novice Knows how to copy a disk or get hacks off the net Geek

360 views • 21 slides

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Chapter 13

Chapter 13. Knowledge of Networking and Network Security. BY D r.Sukchatri Prasomsuk. Contents. Aspects of security Secret key encryption Public key encryption. Aspects of security. Secret key encryption. Public key encryption. Combination.

228 views • 15 slides

Security

Security. Meredith Friedman CS 111.01. Aspects of Security. Privacy. The concept of confidentiality; Only sender and receiver should have access to contents of a transmission. Authentication. Assures the recipient knows who the sender is, and where the information is coming from. Integrity.

227 views • 15 slides

Topic 7: Using cryptography in mobile computing

Topic 7: Using cryptography in mobile computing. Cryptography basics: symmetric, public-key, hash function and digital signature.

98 views • 9 slides