Use Gnupg to encrypt files in Linux

Use Gnupg to encrypt files in Linux
GuideGnuPG (GNU Privacy Guard or GPG) is an open source code for encryption or signature released with the GNU General Public License, which can be used to replace PGP. Most gpg software only supports the command line method, which is hard to grasp. Because gpg software is open source code, it is difficult to hide backdoors, so it is safer than pgp and other commercial software.

1. Create alice and bob users and set the password in the test machine.

2. Switch to alice user and generate the key/Public Key

3. Switch to bob and generate it again.

4. Export bob's public key in ASCII format

5. Switch to user alice and import bob's public key and encrypt the file.

6. Use bob's private key to decrypt the file.

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