Crypto Driver

This is done as part for Advanced operating systems course. This project contains a driver code to interact with the crypto device and a library handle that can be used in userspace programs to derive the functionalities provided.

Crypto Device

The crypto device provides hardware encrytion and and decryption using two 8bit keys. The device supports both mmio and dma.

Driver program

The driver allows us to set the configuration in which we want to use the device. Once this is done we can invoke encrypt or decrypt functions. The driver is configurable in both mmio and dma setting with/without interrupts. This can be used in single and multi-process settings.

library

1.create_handle It returns handle to driver code which is implemented as a character device.

2.encrypt and decrypt given data encrypt and decrypt it respectively.

3.set_key set the key.

4.set_config set the configuration in which u wnat to run the program.

5.close_handle Close the handle to character device.

compile and install driver

cd drivers
make
sudo insmod crypto_mod.ko

uninstall the driver

sudo rmmod crypto_mod

compile library

cd .. # come back to root directory
make