asp.net barcode font Non-repudiation in Font

Print Data Matrix 2d barcode in Font Non-repudiation

1.8. Non-repudiation
Encode ECC200 In None
Using Barcode encoder for Font Control to generate, create Data Matrix ECC200 image in Font applications.
www.OnBarcode.com
Paint PDF 417 In None
Using Barcode printer for Font Control to generate, create PDF 417 image in Font applications.
www.OnBarcode.com
The goal of non-repudiation is to ensure undeniability of a transaction by any of the parties involved. A trusted third party, such as Trent, can be used to accomplish this. For example, let us say Alice interacted with Bob at some point, and she does not want Bob to deny that she interacted with him. Alice wants to prove to some trusted third party (i.e., Trent) that she did communicate with Bob. If, for instance, Alice sent a payment for a bill to Bob over the Web, she may want her payment to be non-repudiable. That is, she does not want Bob to be able to deny that he received the payment at some later point for any reason. Alice, for example, may feel comfortable sending money to Trent, but not directly to Bob. Bob also trusts Trent. Trent may say to Bob, Yes, Alice gave me the $500, so you can ship her the goods, and then I will pay you. In such an example, Trent is playing the role of an escrow agent, but trusted third parties may be able to serve in many other types of trusted roles
Make ANSI/AIM Code 39 In None
Using Barcode generation for Font Control to generate, create Code 3/9 image in Font applications.
www.OnBarcode.com
Printing QR Code In None
Using Barcode drawer for Font Control to generate, create QR Code image in Font applications.
www.OnBarcode.com
CHAPTER 1 s SECURITY GOALS
UPC A Maker In None
Using Barcode encoder for Font Control to generate, create Universal Product Code version A image in Font applications.
www.OnBarcode.com
EAN13 Creation In None
Using Barcode generation for Font Control to generate, create EAN-13 image in Font applications.
www.OnBarcode.com
beyond being escrow agents. Because Alice and Bob trust Trent, they may be able to conduct certain types of transactions that they could not have accomplished otherwise. To illustrate another example in which Alice and Bob use the help of Trent, consider that Alice might want to sign a contract to be employed by Bob. Alice might want Trent to serve as a judge so that if Bob ever tries to pay her less than the salary specified by the contract, she can call on Trent to help enforce the contract. At the same time, Bob might not want Alice to show the employment contract to another potential employer to try to get a higher offer. Alice and Bob can accomplish both of their goals by using Trent s help. Bob can give Trent the employment contract. Trent tells Alice the amount of the offer, and agrees not to show the employment contract to other employers. Then, Alice can decide whether to accept the contract, but will not be able to use it to negotiate higher offers with other employers. Also, if Bob ever tries to cheat Alice by not issuing payment, Trent can intervene. Note that we assume that Trent is trusted to be impartial and will not collude with either Alice or Bob. To summarize, trusted third parties can help conduct non-repudiable transactions. In general, non-repudiation protocols in the world of security are used to ensure that two parties cannot deny that they interacted with each other. In most non-repudiation protocols, as Alice and Bob interact, various sets of evidence, such as receipts, are generated. The receipts can be digitally signed statements that can be shown to Trent to prove that a transaction took place. Unfortunately, while non-repudiation protocols sound desirable in theory, they end up being very expensive to implement, and are not used often in practice.
UCC - 12 Creator In None
Using Barcode encoder for Font Control to generate, create UCC - 12 image in Font applications.
www.OnBarcode.com
Encoding ISSN - 10 In None
Using Barcode creation for Font Control to generate, create ISSN - 10 image in Font applications.
www.OnBarcode.com
1.9. Concepts at Work
Decoding ECC200 In Java
Using Barcode decoder for Java Control to read, scan read, scan image in Java applications.
www.OnBarcode.com
Data Matrix 2d Barcode Creation In None
Using Barcode drawer for Office Word Control to generate, create Data Matrix 2d barcode image in Office Word applications.
www.OnBarcode.com
Now that we have covered a number of key security concepts, let us examine how those concepts work together in a typical web client/web server interaction. Suppose Alice is an employee of a company called PCs-R-Us, and her job responsibility is to order DVD drives for the company s PCs from a company called DVD-Factory. DVD-Factory has a web site that Alice uses to procure DVDs for her company. The following points examine why DVD-Factory might want to care about the security goals discussed in this chapter when implementing its web site. Authentication: If a malicious competitor is trying to steal business from DVD-Factory, the competitor could create a web site that looks exactly like the DVD-Factory web site, but at a different web address. To combat that tactic, DVD-Factory needs to make sure that the web server can be authenticated so that when Alice goes to the DVD-Factory web site, she knows she is dealing with DVD-Factory and not DVD-Factory s look-alike competitor. The SSL protocol is used between web clients and web servers to do secure transactions. When Alice enters the web address https://www.dvd-factory.biz, Alice s browser will invoke the SSL protocol to make sure that the web site authenticates itself to her browser. (We will talk more about how the SSL protocol accomplishes this later in the book, but at this point, it is important to note that the web browser authenticates the web site to make sure that it is dealing with DVD-Factory s web site and not another web site that is trying to spoof or imitate it.)
Decoding Code 3/9 In Java
Using Barcode decoder for Java Control to read, scan read, scan image in Java applications.
www.OnBarcode.com
Paint EAN13 In .NET
Using Barcode creator for Reporting Service Control to generate, create GTIN - 13 image in Reporting Service applications.
www.OnBarcode.com
Printing USS-128 In VS .NET
Using Barcode printer for Visual Studio .NET Control to generate, create USS-128 image in .NET applications.
www.OnBarcode.com
Code128 Scanner In VB.NET
Using Barcode scanner for .NET framework Control to read, scan read, scan image in VS .NET applications.
www.OnBarcode.com
Code 3/9 Generation In Visual Studio .NET
Using Barcode creation for .NET Control to generate, create Code-39 image in Visual Studio .NET applications.
www.OnBarcode.com
Create Code-39 In None
Using Barcode drawer for Online Control to generate, create Code 3 of 9 image in Online applications.
www.OnBarcode.com
ANSI/AIM Code 39 Scanner In VS .NET
Using Barcode recognizer for VS .NET Control to read, scan read, scan image in VS .NET applications.
www.OnBarcode.com
Code 128 Code Set A Creation In Java
Using Barcode generator for BIRT reports Control to generate, create Code 128A image in BIRT reports applications.
www.OnBarcode.com
Paint GS1-128 In .NET
Using Barcode creator for ASP.NET Control to generate, create UCC - 12 image in ASP.NET applications.
www.OnBarcode.com
Generating PDF-417 2d Barcode In None
Using Barcode creation for Software Control to generate, create PDF-417 2d barcode image in Software applications.
www.OnBarcode.com
Copyright © OnBarcode.com . All rights reserved.