debsigs software package provides toolset for cryptographically signing Debian packages, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install debsigs
debsigs is installed in your system.
Make ensure the debsigs package were installed using the commands given below,
$ sudo dpkg-query -l | grep debsigs *
You will get with debsigs package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Development |
| Package | debsigs |
| Version | 0.1.19 |
| Description | toolset for cryptographically signing Debian packages |
| Sub Section | devel |