Walter Anderson wandrson
wandrson
/ analyze.py
Created
March 27, 2014 18:21
Python scrupt that performs basic tests (derived from ent utility) on a binary file and also produces both a histogram of the distribution of bytes as well as a scatter plot of those byte pairs. Useful for preliminary testing of quality of entropy (random) data sources.
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| #! /usr/bin/python | |
| # | |
| # This program will take a file name from the command line and analyze its entropy, using many of the same algorithms | |
| # as the ent program from hotbits | |
| import sys | |
| import struct | |
| import math | |
| import numpy as np | |
| import matplotlib.pyplot as plt | |
| import matplotlib.mlab as mlab |
wandrson
/ RandomCardDraw.pde
Last active
August 29, 2015 13:57
The following example demonstrates how to produce the numbers 1 to X in a random order, where each number only appears once, and that all numbers are produced.
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| // FILE: RandomCardDraw.ino | |
| // AUTHOR: Rob Tillaart and Walter Anderson | |
| // VERSION: 1.0.0 | |
| // PURPOSE: generate random sequence (optimized) | |
| // DATE: April 24, 2014 | |
| // URL: | |
| // The Entropy library provides true random numbers and can be obtained from: | |
| // http://code.google.com/p/avr-hardware-random-number-generation/wiki/WikiAVRentropy | |
| #include <Entropy.h> |