Demo_AVR_over_serial.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 52,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "b''\n"
     ]
    }
   ],
   "source": [
    "import serial\n",
    "import time\n",
    "ser = serial.Serial('/dev/ttyUSB0', baudrate=9600) \n",
    "time.sleep(1)\n",
    "r = ser.read_all()\n",
    "print(r)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 53,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "b'OK\\n'\n"
     ]
    }
   ],
   "source": [
    "ser.write(b't')\n",
    "print(ser.readline())"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Envoie du plaintext :"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "16"
      ]
     },
     "execution_count": 3,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "ser.write(b'p')\n",
    "plaintext = [0x32, 0x43, 0xf6, 0xa8, 0x88, 0x5a, 0x30, 0x8d, 0x31, 0x31, 0x98, 0xa2, 0xe0, 0x37, 0x07, 0x34]\n",
    "ser.write(bytearray(plaintext))"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Envoie de la  clé :"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "16"
      ]
     },
     "execution_count": 4,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "ser.write(b'k')\n",
    "key = [0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c]\n",
    "ser.write(bytearray(key))"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### On execute le chiffrement:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "1"
      ]
     },
     "execution_count": 5,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "ser.write(b'g')"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### On récupère le texte chiffré :"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "ser.write(b'c')\n",
    "ciphertext=[]\n",
    "for i in range(0,16):\n",
    "    ciphertext.append(int.from_bytes(ser.read(),byteorder='little'))\n",
    "    #print(hex(int.from_bytes(ser.read(),byteorder='little')))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "0x39\n",
      "0x25\n",
      "0x84\n",
      "0x1d\n",
      "0x2\n",
      "0xdc\n",
      "0x9\n",
      "0xfb\n",
      "0xdc\n",
      "0x11\n",
      "0x85\n",
      "0x97\n",
      "0x19\n",
      "0x6a\n",
      "0xb\n",
      "0x32\n"
     ]
    }
   ],
   "source": [
    "for e in ciphertext:\n",
    "    print(hex(e)) "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "0x39\n",
      "0x25\n",
      "0x84\n",
      "0x1d\n",
      "0x2\n",
      "0xdc\n",
      "0x9\n",
      "0xfb\n",
      "0xdc\n",
      "0x11\n",
      "0x85\n",
      "0x97\n",
      "0x19\n",
      "0x6a\n",
      "0xb\n",
      "0x32\n"
     ]
    }
   ],
   "source": [
    "from aes import aes_128\n",
    "for e in aes_128(plaintext,key):\n",
    "    print(hex(e)) "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "True"
      ]
     },
     "execution_count": 9,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "ciphertext == aes_128(plaintext,key)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Fast mode"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 14,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "0x6f\n",
      "0xb8\n",
      "0xcf\n",
      "0xa5\n",
      "0xf2\n",
      "0x9\n",
      "0xbd\n",
      "0xb9\n",
      "0xab\n",
      "0x49\n",
      "0x29\n",
      "0xb6\n",
      "0x24\n",
      "0x78\n",
      "0xc6\n",
      "0x7b\n",
      "Le chiffré est correct\n"
     ]
    }
   ],
   "source": [
    "ser.write(b'f')\n",
    "plaintext = [0x32, 0x43, 0xf6, 0xa8, 0x88, 0x5a, 0x30, 0x8d, 0x31, 0x31, 0x98, 0xa2, 0xe0, 0x37, 0x07, 0x34]\n",
    "ser.write(bytearray(plaintext))\n",
    "ciphertext=[]\n",
    "for i in range(0,16):\n",
    "    ciphertext.append(int.from_bytes(ser.read(),byteorder='little'))\n",
    "    \n",
    "for e in ciphertext:\n",
    "    print(hex(e)) \n",
    "\n",
    "if ciphertext == aes_128(plaintext,key):\n",
    "    print(\"Le chiffré est correct\")\n",
    "else:\n",
    "    print(\"le chiffré est incorrect !\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "ser.close()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 20,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[83, 180, 109, 190, 54, 155, 94, 188, 69, 227, 74, 138, 120, 197, 185, 221]"
      ]
     },
     "execution_count": 20,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "import numpy as np\n",
    "list(np.random.randint(255, size=16))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": []
  }
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