This is an analysis program that creates a png file that is then deleted by the algorithms below. After this, I use a program called photorec to attempt to find these previously deleted png files. From this, I can roughly test whether these png files are deleted or still readable.
This program uses the following algorithms as options for secure deletion:
Overwrites the file with random data 35 times.
Specified by the U.S. Department of Defense, this method overwrites the file with random data, 0s, and 1s seven times.
Specified by the British government, this method overwrites the file with random data, 0s, and 1s three times, one time for each type of overwrite.
Overwrites the file with random data a random number of times (between 1 and 10), providing variable security. This should be a weaker method that could be recoverable
Uses just the os.remove function to delete the file without additional security measures. Should be used as a test bench as these files should be recoverable