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- #HOW TO ENCRYPT PLAIN TEXT IN GPG SUITE FULL#
- #HOW TO ENCRYPT PLAIN TEXT IN GPG SUITE PASSWORD#
- #HOW TO ENCRYPT PLAIN TEXT IN GPG SUITE FREE#
Digital signature using X.509 certificate. However, how can Nihad make sure that this message was sent from Sophy? What if another person ( Mary, for example) sent him the message pretending to be Sophy! Here comes the digital signature’s role in authenticating the sender of the message.įigure 1.10. For example in our last demonstration, we said that if Sophy wants to send a secure message to Nihad she should encrypt it using Nihad’s public key, and Nihad will use his private key to decrypt the received message. Digital SignatureĪfter we learned how public/private keypair works, we need a method to make sure that the person who sends us the encrypted message is who he pretends to be. When Sophy receives Nihad’s reply, she will use her private key to decrypt the message so she is able to read it. If Nihad wants to send an encrypted reply to Sophy, he will use her public key to encrypt the message and send it back to her. When Nihad receives the encrypted message, he uses his private key to decrypt the message so he can read it. Sophy wants to communicate secretly with Nihad, so Sophy encrypts a message using Nihad’s public key (which he made available to everyone through his website or on his email signature) and sends the encrypted message to him. Demonstration of asymmetric cryptography: public and private key pair. Write the editorial team at and tell us how you use the gpg command.Figure 1.9. I will demonstrate some of the other options in a future article unless one of you wants to do that and submit it to Enable Sysadmin for publication. But these three are easy-to-use encryption and decryption options that will get you started protecting your files right away. Of course, gpg has many more options than I've shown here. You have restored your original file, and both the encrypted and decrypted versions exist. If you want to extract the original file while decrypting it, strangely enough, you issue the gpg command with no options.
#HOW TO ENCRYPT PLAIN TEXT IN GPG SUITE PASSWORD#
If you want to be prompted to enter the password to decrypt the file again, you'll have to wait ten minutes, which is the default timeout value. Note that there was no passphrase prompt to decrypt the file. This is an encryption and decryption test There's no extraction of content or creation of the original file when you decrypt. Testfile01.doc: GPG symmetrically encrypted data (AES cipher)ĭecrypting a file means that you remove the encryption to read the file's contents. $ file į: GPG symmetrically encrypted data (AES cipher) You can rename the file to anything you want. gpg extension isn't required, but it does let the user know which decryption tool to use to read the file. Alternatively, if you're going to share the encrypted version, you can rename it before sharing. You should probably remove the original file, file1.txt, so that the encrypted one is the sole source of the information contained in it. gpg extension to the newly encrypted file.
#HOW TO ENCRYPT PLAIN TEXT IN GPG SUITE FREE#
Free eBook: Hybrid cloud strategy for dummiesĮncrypting a file with gpg leaves the original file intact, file1.txt, and adds the telltale.Free course: Red Hat OpenStack technical overview.Mqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqj Lqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqk The quick method for encrypting a file is to issue the gpg command with the -c (create) option: $ echo This is an encryption test > file1.txt The gpg utility has a lot of options, but fortunately for us, encrypting and decrypting are easy to do and only require that you know three options for quick use: Create or encrypt ( -c), decrypt ( -d), and extract and decrypt (no option).
#HOW TO ENCRYPT PLAIN TEXT IN GPG SUITE FULL#
gpg features complete key management and all the bells and whistles you would expect from a full OpenPGP implementation. It is a tool to provide digital encryption and signing services using the OpenPGP standard. Gpg is the OpenPGP (Pretty Good Privacy) part of the GNU Privacy Guard (GnuPG). The GNU Privacy Guard (GPG or gpg) tool is a native/baseos security tool for encrypting files.