generate 2d barcode c# HOW TO SECURE YOUR COMPUTER in Font

Creator Code 3 of 9 in Font HOW TO SECURE YOUR COMPUTER

CHAPTER 8 HOW TO SECURE YOUR COMPUTER
Print Code 3/9 In None
Using Barcode encoder for Font Control to generate, create USS Code 39 image in Font applications.
www.OnBarcode.com
UCC.EAN - 128 Creator In None
Using Barcode generator for Font Control to generate, create GTIN - 128 image in Font applications.
www.OnBarcode.com
Setting Up for Encryption
Data Matrix ECC200 Drawer In None
Using Barcode encoder for Font Control to generate, create DataMatrix image in Font applications.
www.OnBarcode.com
Encoding Barcode In None
Using Barcode creation for Font Control to generate, create Barcode image in Font applications.
www.OnBarcode.com
To manage your encryption keys, you use the Seahorse application, which comes with Ubuntu. You first generate a key pair (your private key and the public key), and then you can export or publish the public key so others can use it.
Paint EAN13 In None
Using Barcode drawer for Font Control to generate, create EAN13 image in Font applications.
www.OnBarcode.com
Code 39 Full ASCII Printer In None
Using Barcode printer for Font Control to generate, create Code 39 image in Font applications.
www.OnBarcode.com
Generating a Key Pair
Encoding PDF 417 In None
Using Barcode drawer for Font Control to generate, create PDF-417 2d barcode image in Font applications.
www.OnBarcode.com
Generating 4-State Customer Barcode In None
Using Barcode creation for Font Control to generate, create OneCode image in Font applications.
www.OnBarcode.com
Regardless of whether you want to use Evolution s encryption/signing feature or Nautilus s fileencryption abilities, you must first create a key pair. Here are the steps for doing so: 1. Click Applications Accessories Passwords and Encryption Keys. This will run the Seahorse application, as shown in Figure 8-1.
Make USS Code 39 In Visual C#.NET
Using Barcode printer for .NET framework Control to generate, create Code 3 of 9 image in VS .NET applications.
www.OnBarcode.com
Code 3/9 Decoder In Java
Using Barcode recognizer for Java Control to read, scan read, scan image in Java applications.
www.OnBarcode.com
Figure 8-1. Seahorse is an easy-to-use management tool for passwords and encryption keys. 2. Click File New and select PGP Key from the available options, as shown in Figure 8-2. PGP, which stands for Pretty Good Privacy, is an industry-standard public key encryption system and is typically used to secure e-mails or files. The Secure Shell key is used as an extra security measure when connecting to remote machines, as discussed in 25. The Password Keyring can act as a kind of wallet for securely storing a collection of passwords that would then be accessible with a single password. Use the Stored Password option to store a text password in a keyring.
Read GTIN - 12 In VS .NET
Using Barcode decoder for VS .NET Control to read, scan read, scan image in .NET applications.
www.OnBarcode.com
Create Barcode In None
Using Barcode generator for Online Control to generate, create Barcode image in Online applications.
www.OnBarcode.com
CHAPTER 8 HOW TO SECURE YOUR COMPUTER
Painting QR In None
Using Barcode generator for Software Control to generate, create QR Code ISO/IEC18004 image in Software applications.
www.OnBarcode.com
Generate PDF417 In Java
Using Barcode generation for Java Control to generate, create PDF-417 2d barcode image in Java applications.
www.OnBarcode.com
Figure 8-2. Choose PGP Key to create a key pair for e-mail or file encryption. 3. The New PGP Key dialog box appears. Fill in a full name, e-mail address, and, optionally, a comment, as shown in Figure 8-3. The e-mail address you use for your PGP key should be the one you will be using for sending e-mails with Evolution (see 14 for instructions on creating an e-mail account in Evolution). You may also set three advanced options, available in the Advanced Key Options drop-down list:
Barcode Generation In Objective-C
Using Barcode printer for iPhone Control to generate, create Barcode image in iPhone applications.
www.OnBarcode.com
PDF-417 2d Barcode Encoder In .NET Framework
Using Barcode creator for Reporting Service Control to generate, create PDF 417 image in Reporting Service applications.
www.OnBarcode.com
CHAPTER 8 HOW TO SECURE YOUR COMPUTER
Painting Barcode In Java
Using Barcode generator for Android Control to generate, create Barcode image in Android applications.
www.OnBarcode.com
Paint Matrix 2D Barcode In .NET
Using Barcode generation for Visual Studio .NET Control to generate, create 2D Barcode image in .NET framework applications.
www.OnBarcode.com
Figure 8-3. Fill in the fields in the New PGP Key dialog box and optionally set advanced options for your keys. Encryption Type lets you choose the type of cipher for your new keys. The default is RSA RSA along with DSA Elgamal are the best choices because they enable you to encrypt, decrypt, sign, and authenticate files and e-mail. DSA (sign only) and RSA (sign only), on the other hand, can only sign files and e-mail. The Key Strength option specifies the strength of your key, set in bits. The lower the key strength, the faster it is to encrypt and decrypt, but choosing a lower strength will make it easier for others to crack the encryption. Increasing the key strength means slower encryption, but this should be weighed against the fact that it reduces the chance of your messages being intercepted to the point where larger keys of 2,048+ bits are currently considered unbreakable. This is why the default is set as 2,048 bits, which is a sensible compromise. The Expiration Date option sets an expiration date on your keys. The default is that the keys are set to never expire. An expiration date is useful if you suspect your private key might fall into the wrong hands (for example, if you use a laptop that could get stolen), as the key will be useful only until the expiration date. If you decide to assign an expiration date, you must create a new key before the old one expires and use the old key to sign your new one, in order to maintain authentication.
Create PDF 417 In Visual Studio .NET
Using Barcode generator for .NET framework Control to generate, create PDF 417 image in Visual Studio .NET applications.
www.OnBarcode.com
Create GS1-128 In None
Using Barcode drawer for Microsoft Word Control to generate, create GTIN - 128 image in Microsoft Word applications.
www.OnBarcode.com
CHAPTER 8 HOW TO SECURE YOUR COMPUTER
Note The Key Strength option aids in strengthening your key, because the key strength is based on the type of
cipher used together with the size of the key. Sometimes a key based on a weak cipher can still be made into a strong key by increasing the key length.
4. 5.
Click the Create button to create the keys. The Passphrase for New PGP Key dialog box appears. You need to create a passphrase for your new PGP key. This is a block of text (perhaps a sentence or simply a long stream of characters) that will have to be entered when decrypting files you have encrypted while using Nautilus, and encrypted emails you receive via Evolution. The best passphrase is easy for you to remember but hard for others to guess; ideally, it should include uppercase and lowercase letters, punctuation, and numbers to make it harder for a brute force dictionary attack (that is, a machine systematically entering real words) to break. Enter your passphrase twice: once in the Password box and again in the Confirm box. As shown in Figure 8-4, the characters won t appear on the screen. Click OK to continue.
Copyright © OnBarcode.com . All rights reserved.