Use the GnuPG plug-in to implement Linux program communication security

Article Title: Use the GnuPG plug-in to implement Linux program communication security. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.

There are many ways to implement secure communication in Linux. Encryption or signature is a reliable choice. For example, GNU Privacy Guard (GnuPG) allows users to encrypt, decrypt, sign, verify communications and data, and create and manage keys required for these tasks. GnuPG is a fully open-source tool that complies with OpenPGP standards and is integrated with many Linux applications, from clipboard programs to instant messaging clients. These applications make it easier to use GnuPG for digital communication in the GNU network Object Model Environment (GNOME.

The applications described in this article can use the GnuPG technology almost transparently and can be successfully implemented without having to have much knowledge about encryption or digital communication security.

To use GnuPG for secure digital communication, you need to set a GnuPG key. The secret can then be used in GNOME desktop applications that support GnuPG to ensure the security of messaging, email, text, and files.

　　Seahorse

Let's start with Seahorse. This is a program written for GNOME on the GnuGP graphic user interface. Users can set and manage their GnuPG keys. Most Linux distributions include them in the repository, so the installation is quite simple. During installation, it adds some plug-ins for gEdit, Nautilus, and Epiphany Web browsers.

To run Seahorse, find in the Applications menu, open Seahorse, find Passwords and Encryption Keys, and click on key, select the "Create New Key" menu. 1:

In the displayed window, select the "PGP Key" option to create a new PGP Key. 2:

Click "Continue". In the displayed window, enter the user's name and email address, and select the key type. 3:

The default settings provided by Seahorse for other options during key creation are usually sufficient for most people. In this process, you will be prompted to enter a password phrase for your private key. The user should select a secure password phrase and keep it in mind. If you forget the password phrase, you cannot use the private key to decrypt or sign the data. Once you enter your own password phrase, you only need to click OK to create a Key Pair for the user ). 4:

Once you have a key pair, you can include it in the email signature or place it on a Web site or blog to share it with friends. To build a trusted site, you need to make the public key signed by a friend and sign the public key of a friend.

Users may want to Publish the public key to a key server. To implement this function in Seahorse, choose Remote-> Sync and Publish Keys.5:

Once the GnuPG key is set, your GNOME desktop will become its digital security workstation.

The process for using GnuPG is as follows:

1. Select the data you want to sign, encrypt, verify, or decrypt.

2. Select the key that the user wants to use for this process.

3. If the user is using the private key, a password phrase should be provided.

　　Text Editor Gedit

Seahorse installs a plug-in for gEdit that allows users to encrypt, decrypt, sign, and verify plain text. To enable this GnuGP plug-in for gEdit, select "Preferences" from the "Edit" menu ". 6:

Click the Plugins tab, select Text Encryption, and click OK ". Select the text to be encrypted, decrypted, and signed, and select the encryption option under the "Edit" menu. Then, copy and paste the encrypted text to other applications.

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