AES/GCM min sample

This is an attempt of producing a sane and well-explained tiny code to show how to use (minimally) AES-256/GCM into Linux kernel crypto api. Instead of wasting hours grasping into code that does not matter directly to your task.

I have waste some time on it and I hope you waste less of your time from now on.

"A good idea is an orphan without effective communication" -- Andrew Hunt, The Pragmatic Programmer.

Have you found issues? Please, let me know and thank you!

How can I clone it?

_ git clone https://github.com/rafael-santiago/linux-crypto-api-aes-gcm-min-sample

All code is within src subdirectory.

How can I build?

cd src
make

If the build has succeeded you will got aes-gcm-min-sample.ko module.

How can I test it?

It is just about inserting the produced LKM. Supposing your cwd is the src subdirectory:

_ insmod ./aes-gcm-min-sample.ko

Watch the results by executing dmesg.

If the encryption and decryption was done, the kernel module has inserted, so you need to remove it:

_ rmmod aes-gcm-min-sample

So folks, that's all! I hope it be useful and saves your time ;)