java qr code reader webcam Protecting confidential data in Java

Generator QR Code 2d barcode in Java Protecting confidential data

Protecting confidential data
QR Code 2d Barcode Creator In Java
Using Barcode maker for Java Control to generate, create QR Code image in Java applications.
www.OnBarcode.com
QR Scanner In Java
Using Barcode reader for Java Control to read, scan read, scan image in Java applications.
www.OnBarcode.com
Web browser Server Password Password Encryption Encryption
Draw Data Matrix 2d Barcode In Java
Using Barcode maker for Java Control to generate, create Data Matrix 2d barcode image in Java applications.
www.OnBarcode.com
USS-128 Maker In Java
Using Barcode maker for Java Control to generate, create EAN / UCC - 13 image in Java applications.
www.OnBarcode.com
xxxxxxxxx xxxxxxxxx Routing node xxxxxxxxx Routing node
Denso QR Bar Code Generator In Java
Using Barcode encoder for Java Control to generate, create Denso QR Bar Code image in Java applications.
www.OnBarcode.com
ECC200 Encoder In Java
Using Barcode maker for Java Control to generate, create Data Matrix image in Java applications.
www.OnBarcode.com
Routing node xxxxxxxxx
Encoding Barcode In Java
Using Barcode printer for Java Control to generate, create Barcode image in Java applications.
www.OnBarcode.com
USPS POSTNET Barcode Encoder In Java
Using Barcode creator for Java Control to generate, create Postnet image in Java applications.
www.OnBarcode.com
The Internet
Encode QR In VS .NET
Using Barcode generation for Reporting Service Control to generate, create QR image in Reporting Service applications.
www.OnBarcode.com
Scan QR Code ISO/IEC18004 In VB.NET
Using Barcode recognizer for .NET Control to read, scan read, scan image in VS .NET applications.
www.OnBarcode.com
Figure 7.7 Using a secure HTTP connection, data is encrypted in both directions. Intermediate nodes still see the encrypted data but lack the necessary key to decrypt it.
Create Data Matrix ECC200 In Visual Studio .NET
Using Barcode generation for ASP.NET Control to generate, create ECC200 image in ASP.NET applications.
www.OnBarcode.com
Printing PDF-417 2d Barcode In None
Using Barcode drawer for Microsoft Word Control to generate, create PDF417 image in Word applications.
www.OnBarcode.com
Let us introduce a few caveats about HTTPS. First, the encryption and decryption do introduce a computational overhead. At the client end, this is not a significant problem, as a single client need only process one stream of traffic. On the server, however, the additional load can be significant on a large website. In a classic web application, it is common practice to transmit only key resources over HTTPS and send mundane content such as images and boilerplate markup over plain HTTP. In an Ajax application, you need to be aware of the impact that this may have on the JavaScript security model, which will recognize http:// and https:// as distinct protocols. Second, using HTTPS secures only the transmission of data; it is not a complete security solution in itself. If you securely transmit your users credit card details using 128-bit SSL encryption and then store the information in an unpatched database that has been infected with a backdoor exploit, the data will still be vulnerable. Nonetheless, HTTPS is the recommended solution for transferring sensitive data across the network. However, we do recognize that it has its costs and might not be within easy reach of the small website owner. For those with more modest security requirements, we next present a plain HTTP mechanism for transmitting encrypted data.
PDF 417 Printer In Java
Using Barcode maker for Eclipse BIRT Control to generate, create PDF417 image in BIRT applications.
www.OnBarcode.com
Code 128B Generation In Java
Using Barcode generator for Eclipse BIRT Control to generate, create Code 128A image in BIRT applications.
www.OnBarcode.com
Security and Ajax
Print UPC Code In .NET
Using Barcode printer for Reporting Service Control to generate, create UPC Code image in Reporting Service applications.
www.OnBarcode.com
Print PDF 417 In VS .NET
Using Barcode creation for .NET Control to generate, create PDF 417 image in .NET applications.
www.OnBarcode.com
7.3.3 Encrypting data over plain HTTP using JavaScript
QR Reader In Java
Using Barcode reader for Java Control to read, scan read, scan image in Java applications.
www.OnBarcode.com
Make Code 128 Code Set C In None
Using Barcode maker for Online Control to generate, create Code-128 image in Online applications.
www.OnBarcode.com
Let s suppose that you run a small website that doesn t routinely transmit sensitive data requiring secure connections. You do ask users to log in, however, and are troubled by the passwords being sent as plain text for verification. In such a scenario, JavaScript can come to your aid. First, let s describe the overview of the solution and then look at the implementation. Public and private keys Rather than transmitting the password itself, we can transmit an encrypted form of the password. An encryption algorithm will generate a random-looking, but predictable, output from an input string. MD5 is an example of such an algorithm. It has a few key features that make it useful for security. First, MD5-ing a piece of data will always generate the same result, every time. Second, two different resources are monumentally unlikely to generate the same MD5 digest. Taken together, these two features make an MD5 digest (that is, the output of the algorithm) of a resource a rather good fingerprint of that resource. The third feature is that the algorithm is not easy to reverse. The MD5 digest can therefore be freely passed about in the open, without the risk of a malicious entity being able to use it to decrypt the message. For example, the MD5 algorithm will generate the digest string 8bd04bbe6ad2709075458c03b6ed6c5a from the password string Ajax in action every time. We could encrypt it on the client and transmit the encrypted form to the server. The server would then fetch the password for the user from the database, encrypt it using the same algorithm, and compare the two strings. If they match, the server would log us in. At no time did our unencrypted password go across the Internet. We can t transmit the straight MD5 digest across the Internet in order to log in, however. A malicious entity might not be able to figure out that it was generated from Ajax in action , but they would soon learn that that particular digest grants them access to our site account. This is where public and private keys come in. Rather than encrypting just our password, we will encrypt a concatenation of our password and a random sequence of characters supplied by the server. The server will supply us with a different random sequence every time we visit the login screen. This random sequence is transmitted across the Internet to the client. On the client tier, when the user enters her password, we append the random string and encrypt the result. The server has remembered the random string for the duration of this login attempt. It can therefore retrieve the user id, pull the
Barcode Printer In .NET
Using Barcode drawer for ASP.NET Control to generate, create Barcode image in ASP.NET applications.
www.OnBarcode.com
Creating Barcode In None
Using Barcode printer for Font Control to generate, create Barcode image in Font applications.
www.OnBarcode.com
Copyright © OnBarcode.com . All rights reserved.