#!/usr/bin/env python
# coding: utf-8

# # Counter-Based Random Number Generation

# In[38]:


from Crypto.Cipher import AES
import os
import numpy as np
import matplotlib.pyplot as plt


# In[7]:


#secret = os.urandom(BLOCK_SIZE)
secret = np.array([23842839,234234,2342314,2342342], dtype=np.uint32)


# In[12]:


counter = np.array([1,0,0,0], dtype=np.uint32)


# In[13]:


aes = AES.new(secret)


# In[14]:


aes.encrypt(counter)


# In[15]:


aes.encrypt(counter)


# In[33]:


x = np.fromstring(aes.encrypt(counter), dtype=np.uint32)
counter[0] += 1
x


# ## Batched Random Number Generation

# In[43]:


counters = np.zeros((100000, 4), dtype=np.uint32)
counters[:, 0] = np.arange(len(counters))


# In[44]:


numbers = np.fromstring(aes.encrypt(counters), dtype=np.uint32).reshape(-1)


# In[45]:


plt.hist(numbers)


# * How would you convert that to real numbers between 0 and 1?