Slide 1Can they do that? Can maintenance just come in my apartment without warning? Do I have to pay late fees for my roommate? $50 for a light bulb! Is that legal? I hate…

Slide 1 Objective: Understand what must be in a contract. Know how an offer can be terminated. Slide 2 Creation of Offers Contracts: agreements between two or more parties…

Slide 1 Lecture 25 Secure Communications CPE 401 / 601 Computer Network Systems slides are modified from Jim Kurose & Keith Ross and Dave Hollinger Slide 2 Secure Protocols…

Slide 1 Authentication applications Digital signatures Key management Kerberos X-509 Slide 2 Digital Signatures Cryptographic technique analogous to hand- written signatures.…

Slide 1 Cryptology Digital Signatures and Digital Certificates Prof. David Singer Dept. of Mathematics Case Western Reserve University Slide 2 Cryptographic Services Privacy…

Slide 1 CONTRACTS Slide 2 CHAPTER 4: What is a Contract? Contract is any agreement enforceable by law. Not all agreements are contracts Agreeing to take out the trash (not…

Last time P2P Security Intro Principles of cryptography This time Message integrity Authentication Key distribution and certification Chapter 8 roadmap 8.1 What is network…

Network Security 7-* CIS3360: Chapter 8: Cryptography Application of Public Cryptography Cliff Zou Spring 2012 TexPoint fonts used in EMF. Read the TexPoint manual before…

Authentication Goal: Bob wants Alice to âproveâ her identity to him Protocol ap1.0: Alice says âI am Aliceâ Failure scenario?? âI am Aliceâ Authentication Goal: Bob…

Overview Two of the most popular uses of the Internet are: Electronic mail The World Wide Web By default, both offer almost no protection for the privacy, integrity, and…