'Public key' diaporamas de présentation

Internetwork Technologies

Internetwork Technologies. Internetwork Security. Authentication Is that you? Nonrepudiation No denying it Access control Hands off! Reputation Name = MUD. What are you trying to secure?. Confidentiality Avoid snooping Encryption? Integrity Deletes, changes Backups Availability

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AES algorithm

AES algorithm. 128 bits/16 bytes. Byte substitution. Shift Row. A round:. Mix Column. Key Addition. 4 bytes. AES algorithm. a set of 16 bytes from the file to be encrypted. B Y S T U E B. s. S H I R F O T W. Mix column. Mix column. Mix column. Mix column.

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Computer Networks

Computer Networks Security Internet no central authority end systems in control no central knowledge of connections no per-packet billing legal issues not well understood anonymity is easy Internet/Telco Comparison Telephone System central authority network in control

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E-Mail Capturing & E-mail Encryption

E-Mail Capturing & E-mail Encryption. 60-564 Project Mohit Sud Dr. Aggarwal University of Windsor. Statement of the Problem. Electronic mail (e-mail) messages are one of the most common forms of communication today. But are our e-mail messages kept private and secure?

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Chapter 8: Network Security

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Lecture 17

Lecture 17. Security Introduction Cryptography basics Web Security and Vulnerabilities Network SecurityTools. What is Network Security?.

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Fluency with Information Technology Third Edition by Lawrence Snyder

Chapter 13: Shhh, It's a Secret: Privacy and Digital Security. Fluency with Information Technology Third Edition by Lawrence Snyder. Privacy: Whose Information Is It?. What is privacy? Examine a transaction of buying Dating for Total Dummies

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How to Design Usable IT Security Mechanisms Using the Example of Email Encryption

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luibPc eKy fsueIrtcrnartu

luibPc eKy fsueIrtcrnartu oeJ dlofrdO E5 7E9 0M 2r0 6a Public Key Infrastructure Joe Oldford EE 579 02 Mar 06 Spartans vs. Persians Overview Introduction Classical (symmetric) Cryptography Public Key (asymmetric) Cryptography Digital Signatures Public Key Infrastructures

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Web-Centric Collaboration & Information Sharing

Web-Centric Collaboration & Information Sharing. Overview/Status of the Defense Collaboration Network International Collaboration Network. DCN/ICN Team Nov 10, 2000. OSD LAMP Program Robert S. Kidwell, ManTech VP & Sr Tech Dir enterprise Integration Center. DCN/ICN.

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Security: An Overview of Cryptographic Techniques

Security: An Overview of Cryptographic Techniques. With slides from: Debabrata Dash, Nick Feamster, Gregory Kesden, Vyas Sekar and others. Cryptography, Cryptographic Protocols and Key Distribution. Authentication Mutual Authentication Private/Symmetric Keys Public Keys Key Distribution.

721 views • 26 slides

Introduction to Cryptography

Introduction to Cryptography. Based on: William Stallings, Cryptography and Network Security. Chapter 10. Other Public-Key Cryptosystems. Diffie-Hellman Key Exchange. First published public-key algorithm A number of commercial products employ this key exchange technique

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EEC-484/584 Computer Networks

EEC-484/584 Computer Networks. Lecture 16 Wenbing Zhao wenbing@ieee.org. Outline. Reminder Quiz#5 4/30 4-6pm Final Revised Wiki Page due 5/5 midnight Presentation: request for waiver will be handled FCFS Waiver request must have a revision summary and a url to your revised wiki page

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Using the MyProxy Online Credential Repository

Using the MyProxy Online Credential Repository. Jim Basney National Center for Supercomputing Applications University of Illinois jbasney@ncsa.uiuc.edu. What is MyProxy?. Independent Globus Toolkit add-on since 2000 To be included in Globus Toolkit 4.0 A service for securing private keys

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The RSA Cryptosystem

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Meeting the Privacy Goals of NSTIC in the Short Term

Meeting the Privacy Goals of NSTIC in the Short Term. Presentation at the 2011 Internet Identity Workshop Francisco Corella and Karen P. Lewison Pomcor. Contents.

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The RSA Cryptosystem

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On Public Key Encryption from Noisy Codewords

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Trust Infrastructure and DNSSEC Deployment

Under normal circumstances, this [a way that the BlackBerry Router can be shut down using a flaws in the ... BlackBerry Router will only communicate with the BlackBerry ...

433 views • 16 slides