Seal

Seal is a simple program to encrypt files, notes, and passwords. Seal depends on the vis editor because vis can be used in a pipe without writing temporary files. Install vis by compiling it from source or using your package manager:

If you have any ideas on how Seal could use Vim without writing data in cleartext to disk, let me know!

First steps

Install Seal and generate your private key:

$ go get github.com/davidlazar/seal/...

$ seal-keygen 
Created directory /home/david/.seal
Enter passphrase: 
Enter same passphrase again: 
Wrote public key: /home/david/.seal/david.publickey
Wrote private key: /home/david/.seal/david.privatekey

Backup your private key:

$ cp ~/.seal/david.privatekey /mnt/usbkey
$ lpr ~/.seal/david.privatekey  # print the private key

Encrypt files

Encrypt a file:

$ seal example.pdf
Wrote example.pdf.sealed (encrypted with key david)
$ rm example.pdf

Reveal the contents of the encrypted file:

$ seal-cat example.pdf.sealed | zathura -
Enter passphrase for key david: ...

Encrypt notes

Seal can create and edit encrypted documents. You do not need to enter a passphrase to create an encrypted document:

$ seal-edit doc.txt.sealed  # launches the vis editor

Subsequent edits require a passphrase:

$ seal-edit doc.txt.sealed
Enter passphrase for key david: ...

Manage passwords

The seal-pw program can be used as a password manager. To generate a password for a new account:

$ seal-pw github  # launches the vis editor to specify account information

Run the same command again to copy the password to the clipboard:

$ seal-pw github
Enter passphrase for key david: ...
url: github.com
username: davidlazar
Password copied to clipboard for 10 seconds.

Use seal-cat and seal-edit to view and update account information:

$ seal-cat github 
Enter passphrase for key david: 
url: github.com
username: davidlazar
clipboard: lQBphTfTTaafOEFCJHc4udEJYvAe99eJ

Related work

• Pick: Minimal password manager for macOS and Linux
• Pwclip: Hash-based password manager