aespipe software package provides AES-encryption tool with loop-AES support, 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 aespipe
aespipe is installed in your system.
Make ensure the aespipe package were installed using the commands given below,
$ sudo dpkg-query -l | grep aespipe *
You will get with aespipe package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Utilities |
| Package | aespipe |
| Version | 2.4c-1+b1 [armhf], 2.4c-1 [amd |
| Description | AES-encryption tool with loop-AES support |
| Sub Section | Utils |