SecTrans is an application made for a cybersecurity course. It is supposed to allow secure transfer of files.

The main constraint was using the provided libserver.so and libclient.so. These two dynamic libraries are simple wrapper around sockets, with some limitations. See the preliminery report for more details.

A post-coding report is also available.

Do not use this code in production. It is not secure at all. It is only a proof of concept, and I did not have the time to implement all the security features I wanted.

The user is expected to use Nix in order to get the dependencies. The Determinate Systems installer is recommanded:

curl --proto '=https' --tlsv1.2 -sSf -L https://install.determinate.systems/nix | sh -s -- install

Once Nix is installed, running nix develop --impure will put you in a working environment.

You can then build the project:

cmake --preset linux-gcc
cmake --build build

Finally, run the server:

./build/src/server/cybersec_project_server

The client (on the same machine) will then connect automatically. Available commands are:

• -up <file>: upload a file
• -down <file>: download a file and write it locally, overwriting existing content
• -list: list available files

The client binary is available at build/src/client/cybersec_project_client.

The user is hardcoded and is user1. The password is password1.

Ports 12345 and 12346 are expected to be available.