vb.net data matrix reader AM FL Y in Software

Drawer Code39 in Software AM FL Y

4
Scan Code 39 In None
Using Barcode Control SDK for Software Control to generate, create, read, scan barcode image in Software applications.
Generate ANSI/AIM Code 39 In None
Using Barcode creator for Software Control to generate, create Code 3/9 image in Software applications.
director is Maria, Gwen represents sales and marketing, the shipping department sends Daniel, Julia comes from engineering, and Michelle is the key recovery administrator. To start the process, all the trustees gather to generate and collect shares. First, an RSA key pair is generated. Then the threshold program splits the private key into six shares, with each trustee getting one share (see Figure 4-26). The program generating the shares takes as input the private key, the number of shares (six), and the threshold count (three) and produces as output six shares. It s up to the trustees to protect their shares, although the company probably has a policy that defines the procedure. They can simply use PBE on the shares and store them on floppy disks, or they can store them on smart cards or other tokens. After the shares are generated and distributed, the public key is distributed and the private key is destroyed.
Code 3 Of 9 Decoder In None
Using Barcode decoder for Software Control to read, scan read, scan image in Software applications.
Create Code 3/9 In C#
Using Barcode creation for Visual Studio .NET Control to generate, create Code 39 Full ASCII image in VS .NET applications.
Figure 4-26 An RSA key pair is generated, and each trustee gets one share of the private key, which is then destroyed
Draw ANSI/AIM Code 39 In Visual Studio .NET
Using Barcode maker for ASP.NET Control to generate, create Code-39 image in ASP.NET applications.
Painting USS Code 39 In VS .NET
Using Barcode printer for VS .NET Control to generate, create Code39 image in VS .NET applications.
Now employees can copy their keys (symmetric encryption keys, key exchange or digital enveloping keys) and encrypt them using the key recovery public key. Suppose Pao-Chi encrypts sensitive files on his hard drive and keeps the key on a token. Furthermore, suppose he participates in the key recovery and has created a digital envelope of his session key using the key recovery public key. He keeps that digital envelope on a floppy in his desk drawer. Now suppose he loses his token. How can he recover his data
Make Code39 In VB.NET
Using Barcode creation for .NET framework Control to generate, create Code 39 Extended image in .NET framework applications.
Draw Barcode In None
Using Barcode encoder for Software Control to generate, create barcode image in Software applications.
AM FL Y
Print Code 39 In None
Using Barcode drawer for Software Control to generate, create Code 3/9 image in Software applications.
Create GS1-128 In None
Using Barcode generation for Software Control to generate, create USS-128 image in Software applications.
The Key Distribution Problem and Public-Key Cryptography
EAN13 Creator In None
Using Barcode encoder for Software Control to generate, create EAN-13 image in Software applications.
Bar Code Creation In None
Using Barcode encoder for Software Control to generate, create bar code image in Software applications.
To recover the data, Pao-Chi takes the floppy containing the digital envelope to Michelle, the key recovery administrator. If Michelle is out that day, he could take it to Warren, the system administrator, or Gwen, the VP of sales, or any of the other trustees. The trustee he visits must then find two other trustees. The combination of trustees might be Warren, Daniel and Julia, or Maria, Daniel, and Julia. Maybe it would be Warren, Maria, and Gwen, or if Michelle were there that day it could be Michelle, Gwen and Daniel. It doesn t matter; the scheme needs three trustees. The three trustees give their shares to the program running the threshold algorithm, and the program combines them to produce the secret, which in this case is an RSA private key. Now that the private key is reconstructed, Pao-Chi s digital envelope can be opened. The result is the session key he needs to decrypt the data on his hard drive (see Figure 4-27).
Code 2 Of 5 Creation In None
Using Barcode generation for Software Control to generate, create 2 of 5 Standard image in Software applications.
USS-128 Decoder In Visual Basic .NET
Using Barcode decoder for VS .NET Control to read, scan read, scan image in .NET framework applications.
Figure 4-27 Three trustees combine their shares to reproduce the key recovery private key
Barcode Generation In .NET
Using Barcode creator for Visual Studio .NET Control to generate, create bar code image in .NET applications.
Generating UPC-A Supplement 2 In Visual Basic .NET
Using Barcode generator for .NET framework Control to generate, create UPC-A Supplement 5 image in .NET framework applications.
4
Draw Code 128 Code Set A In Java
Using Barcode printer for Java Control to generate, create Code 128C image in Java applications.
Reading Bar Code In Visual Basic .NET
Using Barcode decoder for VS .NET Control to read, scan read, scan image in .NET framework applications.
The threshold scheme has many advantages over the key recovery programs described earlier, and it eliminates some of the disadvantages. First, no one person can recover keys; it takes a group acting together. Anyone attempting to be dishonest must find some co-conspirators. Second, if one of the trustees is unavailable, it s still possible to perform the operation. Third, if one of the trustees leaves the company, the secret is still safe, and there s no need to restart the key recovery process from the beginning. A disadvantage is that if one trustee leaves the company, his or her share is still valid. By itself, this share can t do anything, but if a threshold number of people leave the company, this group of unauthorized people would have the power to recover the company s secrets. For example, suppose that Warren, Maria, and Julia leave the company, either all at once or over a period of time. They might form their own company, start working for another firm, or work for different companies. If the three of them decide to steal their former employer s secrets, they could re-create the key recovery private key. Of course, that private key won t do them any good without the digital envelopes protecting the session keys of all the employees. So if they want to steal secrets, they still have to find the floppy disks or tokens storing the encrypted session keys. But a company that wants to eliminate such an attack would generate a new key pair and restart the key recovery program from scratch. Fortunately, with a threshold scheme, this step is not necessary every time a trustee leaves but only when several of them leave.
Decoding Bar Code In Java
Using Barcode Control SDK for BIRT reports Control to generate, create, read, scan barcode image in Eclipse BIRT applications.
Print Code-128 In Objective-C
Using Barcode creator for iPad Control to generate, create Code 128C image in iPad applications.
Copyright © OnBarcode.com . All rights reserved.