Linux (`.deb`)¶

Tested on Ubuntu 22.04+, Debian 12+, Linux Mint 21+.

Install¶

Grab siwit-seal_<version>_amd64.deb from the Releases page. Always pick the latest version unless you have a reason not to.
Install with apt from the directory containing the file:
```
sudo apt install ./siwit-seal_<version>_amd64.deb
```
The leading ./ is important. It tells apt to treat the file as a local package and resolve its dependencies automatically. If you prefer dpkg, run sudo apt -f install afterwards to fix any missing dependencies.
Launch from your applications menu (search for SiliconWit Seal), or run siwit-seal in a terminal.

What is installed¶

The Seal binary and Qt libraries
A bundled GnuPG (no separate apt install gnupg needed)
A .desktop entry so the app shows up in your launcher

Uninstall¶

sudo apt remove siwit-seal

This leaves your keys and contacts in place. To remove everything including your keys (irreversible), also delete ~/.local/share/Seal/ and the SILICONWIT-SEAL folder under your Documents.

Where your files live¶

Type	Location
Keyring (private and public)	`~/.local/share/Seal/gnupg/`
Contacts database	`~/.local/share/Seal/contacts.sqlite`
Visible saved files	`~/Documents/SILICONWIT-SEAL/`

After install¶

First launch runs the setup wizard. Save the private-key backup and revocation certificate to a USB stick or password manager before you start sealing real files.

Linux (.deb)¶