In this section, I’ll show you how to encrypt a file using the OpenSSL tool. You are prompted for the passphrase you created during the encryption. Linux and other Unixish oses offers strong file permissions and ACL (access control list) concept in Linux/UNIX computer security used to enforce privilege separation. However, none of them offers a password to protect files. Enter a unique password for the file and hit Enter.
Therefore, the only people who can read these documents are yourself, and anyone with admin privileges.For example, let’s say I have a file called “testfile.txt” in a particular folder. nautilus -q Open the file manager, then go to the directory that contains the file you want to encrypt. To decrypt a file from the file manager, follow these steps:
I can deny permissions to other accounts by issuing the following command:In this example, I’ve executed this command as “root”. For example, to name the folder In Linux, folders that begin with a period are called hidden folders Verify the newly typed password by typing it again and hitting Enter. When you execute this command, it’ll ask you for a password and after verifying it, it’ll place the decrypted file with the “out” filename.
$ zip -p pass123 ccat-command.zip ccat-1.1.0/. Let's say you have a file, ~/Documents/important.docx, that you want to password protect. It is a suite of cryptographic software. When prompted, give the new folder a name, but make sure it begins with a period. Encrypt folders using the file manager or the gpg-zip command.
And after you’re done reading the decrypted file, you should delete that as well. 3. To encrypt a folder from the command line, use the gpg-zip command. The text editor vim for example, has To encrypt entire folders and directories, it’s best to zip the contents into a single file and then encrypt it. The next method makes use of encryption software. If I have a folder called testfolder, I can write:Now when I try and access it as another user, I get a permission denied message as expected:While easy to implement, this approach doesn’t provide hard security. When you execute this command, it’ll ask you for a password and after verifying it, it’ll place the decrypted file with the “out” filename.
The only difference is that you're asked if you want to encrypt the files individually or together in a package.
Encrypt, for example, the Documents directory, with the command: Then however, when one wants to access a file, one must extract the unencrypted file from the zip, read file and then delete, or edit file and then update zip with new file, then delete intermediate file. Designed as a replacement of UNIX crypt, ccrypt is an utility for files and streams encryption … Warning! In this, you simply assign the appropriate permissions to the file or folder, which prevents others from accessing them. Encrypt the file with the command gpg -c important.docx. Like this:Now if I try and open the encrypted file using a text editor, I get rubbish:When you protect files like this, it doesn’t matter whether the user is an administrator, or has sudo privileges. When the installation completes, restart Nautilus with the command: Create an encrypted ZIP file secure.zip from some file: $ zip --encrypt secure.zip file Enter password: Verify password: adding: file (deflated 8%) Create password protected ZIP archive … For example, you can use gpg to encrypt files. When prompted, type and verify an encryption password. You should now see the newly encrypted file in the folder. In this article, we’ll take a look at two different approaches to protecting files and folders in Linux.The first approach is the simplest, and might suit your needs. The “in” parameter specifies the input file, and the “out” parameter specifies the output file. Here's how: Once installed, you can use the zip command with -p flag to create a password protected zip archive called ccat-command.zip from the directory of files called ccat-1.1.0 as follows. sudo apt-get install seahorse-nautilus -y When the installation completes, restart Nautilus with the command: