--- /dev/null
+{
+ "cells": [
+ {
+ "cell_type": "code",
+ "execution_count": 2,
+ "metadata": {},
+ "outputs": [],
+ "source": [
+ "import os,sys,inspect, collections\n",
+ "currentdir = os.path.dirname(os.path.abspath(inspect.getfile(inspect.currentframe())))\n",
+ "parentdir = os.path.dirname(currentdir)\n",
+ "sys.path.insert(0,parentdir) \n",
+ "\n",
+ "import matplotlib.pyplot as plt\n",
+ "%matplotlib inline\n",
+ "\n",
+ "from cipherbreak import *\n",
+ "\n",
+ "ca = open('3a.ciphertext').read()\n",
+ "cb = open('3b.ciphertext').read()"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 6,
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "'MHALEATASTIFETHOTSFETNRAFSSETFWTHEYAROLPOTTLEMATHPNFDAUUOOTMOTLARGSTIEETHEHODREATHEITHETINNWSRNITHETOUTAUOLOPALATBTNNVEIUNCETHEHFGERFCEIAUOLDASODVORTOGEYOUEDPBHASOICBMATHNFTTHESFWWNITNYOGIAUNLOORDHASTOLERTEDSUNFTSDEYEOTMNFLDHOVEPEERAREVATOPLEORDMATHATTHELNSSNYPIATORRAOHOVARGIEOLASEDTHOTTHEAUERAMEIEIEODARGHASUNCCFRAUOTANRSOGIAUNLOOIIORGEDTNWLORTYOLSEARYNICOTANROPNFTTHEWLORREDDASWNSATANRNYTINNWSSETTARGOTIOWARTNMHAUHTHEAUERAYELLATASSTALLFRULEOIHNMTHESOVOGETIAPESHODLEOIREDTNDEUAWHEINFIOICBSUNCCFRAUOTANRSOSTHEBHODRNMIATARGNYTHEAINMRHNMEVEIEVEIBOICBHOSATSTIOATNISORDATSEECSLAKELBTNCETHOTNRENICNIENYTHELNUOLTIAPESWENWLETFIREDSNCENRESHEODLNVENICNREBATASOLLTIEOUHEIBPFTTHASOUTTHIEOTEREDTNFRDEICARETHEECWAIESERTAIESBSTECNYSEUFIEUNCCFRAUOTANRTHEUOESOIUAWHEIWEIHOWSCNIETHORINODSHODEROPLEDTHEECWAIETNYFRUTANRSEUFIELBORDATSLNSSMOSODASOSTEITFIRARGTHOTLNSSARTNOVAUTNIBNRTHEPOTTLEYAELDDESEIVEDCNIEIEUNGRATANRTHORATIEUEAVEDWEIHOWSSFETNRAFSREVEIKREMNIWEIHOWSHEYOALEDTNFRDEISTORDTHEUFRRARGNYTHEWLORPFTEATHEIMOBDESWATETHEVAUTNIBOGIAUNLOORDTHERARTHLEGANRIECOAREDARDASGIOUENRHEOIARGTHASREMSULOFDAFSUOESOIOFGFSTFSGEICORAUFSREINECWEINIASSFEDOSEUIETWINULOCOTANRESTOPLASHARGOUAWHEISUHNNLTNDEVELNWOREMSBSTECNYACWEIAOLUAWHEISATMNIKEDARSEUIETYNINVEITMERTBBEOISDEVELNWARGREMCETHNDSTNSEUFIEUNCCFRAUOTANRSOUINSSTHEECWAIESTFDBARGTHEMNIKSNYTHEGIEEKSOGESEFULADORDHBWOTAOORDEVERNLDEIMNIKSYINCORUAERTPOPBLNRTHESUHNNLDEVELNWEDREMMOBSTNSOYEGFOIDUNCCFRAUOTANRSYINCINCESERECAESTHESEREMSBSTECSMEIEMIATTERDNMRORDDASTIAPFTEDARTHEUNDEXNUUFLTNIFCWEIHOWSTHECNSTSTIAUTLBGFOIDEDDNUFCERTAROLLHASTNIBMHERATMOSYAROLLBUNCWLETEDCORBBEOISLOTEITHEECWEINIDNCATAORASSFEDOREXEUFTAVENIDEIMHAUHWIEYOUEDEVEIBUNWBNYTHEUNDEXTHOTATMOSTNPEGFOIDEDPBEVEIBLEGANRTNTHELOSTCORTHEDEYEOTNYTHEAUERAORDTHESFAUADENYPNFDAUUOWEIHOWSWINTEUTEDTHERARTHLEGANRYINCDASSNLFTANROGIAUNLOMOSLOIGELBLEYTTNHASNMRDEVAUESARTHEWINVARUETHNFGHATMOSCODEULEOITNHACTHOTTNIETFIRMNFLDCEOROTPESTDASGIOUEORDOTMNISTDEOTHAROPIEOKMATHTIODATANRTHERARTHIOASEDOREMSTORDOIDTHELEGANRMOSEXALEDARDASGIOUETNERDFIETHEHOIDORDDORGEINFSMNIKNYSFPDFARGTHEUOLEDNRAAARTHEPLEOKMALDEIRESSESNYUOLEDNRAOSFETNRAFSNIDEIEDTHERARTHTNCOIUHTNEPNIOUFCMHAUHTHEBMEIETNCOKETHEAIPOSEYNIIOADSARTNUOLEDNRAOTHEFRSWNKERIEOSNRYNITHEAIEXALEMOSTHOTARTELLAGERUEIEWNITSSFGGESTEDTHOTTHASMOSMHEIETHEBCAGHTYARDTHEAILNSTOQFALOTHNSEMHNMNFLDIEODNRCFSTYNLLNMCBYOATHYFLSLOVETAINMHNYOUESOGIOVETOSKWEIHOWSTHELOIGESTTNDOTEOSHETIOVELSTNUNRUEOLTHEYNFITHUHOWTEINYTHASTIOGAUTOLE'"
+ ]
+ },
+ "execution_count": 6,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "scb = sanitise(cb)\n",
+ "scbp = chunks(scb, 2)\n",
+ "order = 'xlcdm'\n",
+ "ltrs = 'etoanisrhdlufcmwgybpvkxqz'\n",
+ "prs = [p[0] for p in collections.Counter(chunks(sanitise(cb), 2)).most_common()]\n",
+ "trans = {pr[1]: pr[0].upper() for pr in zip(ltrs, prs)}\n",
+ "scbpt = cat(trans[p] for p in scbp)\n",
+ "scbpt"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 7,
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "'MHALEATASTIFETHOTSFETNRAFSSETFWTHEYAROLPOTTLEMATHPNFDAUUOOTMOTLARGSTIEETHEHODREATHEITHETINNWSRNITHETOUTAUOLOPALATBTNNVEIUNCETHEHFGERFCEIAUOLDASODVORTOGEYOUEDPBHASOICBMATHNFTTHESFWWNITNYOGIAUNLOORDHASTOLERTEDSUNFTSDEYEOTMNFLDHOVEPEERAREVATOPLEORDMATHATTHELNSSNYPIATORRAOHOVARGIEOLASEDTHOTTHEAUERAMEIEIEODARGHASUNCCFRAUOTANRSOGIAUNLOOIIORGEDTNWLORTYOLSEARYNICOTANROPNFTTHEWLORREDDASWNSATANRNYTINNWSSETTARGOTIOWARTNMHAUHTHEAUERAYELLATASSTALLFRULEOIHNMTHESOVOGETIAPESHODLEOIREDTNDEUAWHEINFIOICBSUNCCFRAUOTANRSOSTHEBHODRNMIATARGNYTHEAINMRHNMEVEIEVEIBOICBHOSATSTIOATNISORDATSEECSLAKELBTNCETHOTNRENICNIENYTHELNUOLTIAPESWENWLETFIREDSNCENRESHEODLNVENICNREBATASOLLTIEOUHEIBPFTTHASOUTTHIEOTEREDTNFRDEICARETHEECWAIESERTAIESBSTECNYSEUFIEUNCCFRAUOTANRTHEUOESOIUAWHEIWEIHOWSCNIETHORINODSHODEROPLEDTHEECWAIETNYFRUTANRSEUFIELBORDATSLNSSMOSODASOSTEITFIRARGTHOTLNSSARTNOVAUTNIBNRTHEPOTTLEYAELDDESEIVEDCNIEIEUNGRATANRTHORATIEUEAVEDWEIHOWSSFETNRAFSREVEIKREMNIWEIHOWSHEYOALEDTNFRDEISTORDTHEUFRRARGNYTHEWLORPFTEATHEIMOBDESWATETHEVAUTNIBOGIAUNLOORDTHERARTHLEGANRIECOAREDARDASGIOUENRHEOIARGTHASREMSULOFDAFSUOESOIOFGFSTFSGEICORAUFSREINECWEINIASSFEDOSEUIETWINULOCOTANRESTOPLASHARGOUAWHEISUHNNLTNDEVELNWOREMSBSTECNYACWEIAOLUAWHEISATMNIKEDARSEUIETYNINVEITMERTBBEOISDEVELNWARGREMCETHNDSTNSEUFIEUNCCFRAUOTANRSOUINSSTHEECWAIESTFDBARGTHEMNIKSNYTHEGIEEKSOGESEFULADORDHBWOTAOORDEVERNLDEIMNIKSYINCORUAERTPOPBLNRTHESUHNNLDEVELNWEDREMMOBSTNSOYEGFOIDUNCCFRAUOTANRSYINCINCESERECAESTHESEREMSBSTECSMEIEMIATTERDNMRORDDASTIAPFTEDARTHEUNDEXNUUFLTNIFCWEIHOWSTHECNSTSTIAUTLBGFOIDEDDNUFCERTAROLLHASTNIBMHERATMOSYAROLLBUNCWLETEDCORBBEOISLOTEITHEECWEINIDNCATAORASSFEDOREXEUFTAVENIDEIMHAUHWIEYOUEDEVEIBUNWBNYTHEUNDEXTHOTATMOSTNPEGFOIDEDPBEVEIBLEGANRTNTHELOSTCORTHEDEYEOTNYTHEAUERAORDTHESFAUADENYPNFDAUUOWEIHOWSWINTEUTEDTHERARTHLEGANRYINCDASSNLFTANROGIAUNLOMOSLOIGELBLEYTTNHASNMRDEVAUESARTHEWINVARUETHNFGHATMOSCODEULEOITNHACTHOTTNIETFIRMNFLDCEOROTPESTDASGIOUEORDOTMNISTDEOTHAROPIEOKMATHTIODATANRTHERARTHIOASEDOREMSTORDOIDTHELEGANRMOSEXALEDARDASGIOUETNERDFIETHEHOIDORDDORGEINFSMNIKNYSFPDFARGTHEUOLEDNRAAARTHEPLEOKMALDEIRESSESNYUOLEDNRAOSFETNRAFSNIDEIEDTHERARTHTNCOIUHTNEPNIOUFCMHAUHTHEBMEIETNCOKETHEAIPOSEYNIIOADSARTNUOLEDNRAOTHEFRSWNKERIEOSNRYNITHEAIEXALEMOSTHOTARTELLAGERUEIEWNITSSFGGESTEDTHOTTHASMOSMHEIETHEBCAGHTYARDTHEAILNSTOQFALOTHNSEMHNMNFLDIEODNRCFSTYNLLNMCBYOATHYFLSLOVETAINMHNYOUESOGIOVETOSKWEIHOWSTHELOIGESTTNDOTEOSHETIOVELSTNUNRUEOLTHEYNFITHUHOWTEINYTHASTIOGAUTOLE'"
+ ]
+ },
+ "execution_count": 7,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "trhc = ''.maketrans('abmdefghijklcnopqrstuvwxyz', string.ascii_lowercase)\n",
+ "scbpt.translate(trhc)"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 8,
+ "metadata": {},
+ "outputs": [],
+ "source": [
+ "def polybius_grid(keyword, column_order, row_order, letters_to_merge=None,\n",
+ " wrap_alphabet=KeywordWrapAlphabet.from_a):\n",
+ " alphabet = keyword_cipher_alphabet_of(keyword, wrap_alphabet=wrap_alphabet)\n",
+ " if letters_to_merge is None: \n",
+ " letters_to_merge = {'j': 'i'}\n",
+ " grid = {l: k \n",
+ " for k, l in zip([(c, r) for c in column_order for r in row_order],\n",
+ " [l for l in alphabet if l not in letters_to_merge])}\n",
+ " for l in letters_to_merge:\n",
+ " grid[l] = grid[letters_to_merge[l]]\n",
+ " return grid "
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 9,
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "{'a': ('x', 'x'),\n",
+ " 'b': ('x', 'l'),\n",
+ " 'c': ('x', 'c'),\n",
+ " 'd': ('x', 'd'),\n",
+ " 'e': ('x', 'm'),\n",
+ " 'f': ('l', 'x'),\n",
+ " 'g': ('l', 'l'),\n",
+ " 'h': ('l', 'c'),\n",
+ " 'i': ('l', 'd'),\n",
+ " 'j': ('l', 'd'),\n",
+ " 'k': ('l', 'm'),\n",
+ " 'l': ('c', 'x'),\n",
+ " 'm': ('c', 'l'),\n",
+ " 'n': ('c', 'c'),\n",
+ " 'o': ('c', 'd'),\n",
+ " 'p': ('c', 'm'),\n",
+ " 'q': ('d', 'x'),\n",
+ " 'r': ('d', 'l'),\n",
+ " 's': ('d', 'c'),\n",
+ " 't': ('d', 'd'),\n",
+ " 'u': ('d', 'm'),\n",
+ " 'v': ('m', 'x'),\n",
+ " 'w': ('m', 'l'),\n",
+ " 'x': ('m', 'c'),\n",
+ " 'y': ('m', 'd'),\n",
+ " 'z': ('m', 'm')}"
+ ]
+ },
+ "execution_count": 9,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "polybius_grid('', order, order)"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 10,
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "{'a': ('a', 'a'),\n",
+ " 'b': ('a', 'b'),\n",
+ " 'c': ('a', 'c'),\n",
+ " 'd': ('a', 'd'),\n",
+ " 'e': ('a', 'e'),\n",
+ " 'f': ('b', 'a'),\n",
+ " 'g': ('b', 'b'),\n",
+ " 'h': ('b', 'c'),\n",
+ " 'i': ('b', 'd'),\n",
+ " 'j': ('b', 'd'),\n",
+ " 'k': ('b', 'e'),\n",
+ " 'l': ('c', 'a'),\n",
+ " 'm': ('c', 'b'),\n",
+ " 'n': ('c', 'c'),\n",
+ " 'o': ('c', 'd'),\n",
+ " 'p': ('c', 'e'),\n",
+ " 'q': ('d', 'a'),\n",
+ " 'r': ('d', 'b'),\n",
+ " 's': ('d', 'c'),\n",
+ " 't': ('d', 'd'),\n",
+ " 'u': ('d', 'e'),\n",
+ " 'v': ('e', 'a'),\n",
+ " 'w': ('e', 'b'),\n",
+ " 'x': ('e', 'c'),\n",
+ " 'y': ('e', 'd'),\n",
+ " 'z': ('e', 'e')}"
+ ]
+ },
+ "execution_count": 10,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "polybius_grid('a', 'abcde', 'abcde')"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 11,
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "True"
+ ]
+ },
+ "execution_count": 11,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "polybius_grid('elephant', 'abcde', 'abcde')['b'] == ('b', 'c')"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 12,
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "True"
+ ]
+ },
+ "execution_count": 12,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "polybius_grid('elephant', 'abcde', 'abcde')['e'] == ('a', 'a')"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 13,
+ "metadata": {},
+ "outputs": [],
+ "source": [
+ "def polybius_reverse_grid(keyword, column_order, row_order, letters_to_merge=None,\n",
+ " wrap_alphabet=KeywordWrapAlphabet.from_a):\n",
+ " alphabet = keyword_cipher_alphabet_of(keyword, wrap_alphabet=wrap_alphabet)\n",
+ " if letters_to_merge is None: \n",
+ " letters_to_merge = {'j': 'i'}\n",
+ " grid = {k: l \n",
+ " for k, l in zip([(c, r) for c in column_order for r in row_order],\n",
+ " [l for l in alphabet if l not in letters_to_merge])}\n",
+ "# for l in letters_to_merge:\n",
+ "# for r, c in grid:\n",
+ "# if grid[r, c] == letters_to_merge[l]:\n",
+ "# grid[l] = grid[r, c]\n",
+ " return grid "
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 14,
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "{('c', 'c'): 'n',\n",
+ " ('c', 'd'): 'o',\n",
+ " ('c', 'l'): 'm',\n",
+ " ('c', 'm'): 'p',\n",
+ " ('c', 'x'): 'l',\n",
+ " ('d', 'c'): 's',\n",
+ " ('d', 'd'): 't',\n",
+ " ('d', 'l'): 'r',\n",
+ " ('d', 'm'): 'u',\n",
+ " ('d', 'x'): 'q',\n",
+ " ('l', 'c'): 'h',\n",
+ " ('l', 'd'): 'i',\n",
+ " ('l', 'l'): 'g',\n",
+ " ('l', 'm'): 'k',\n",
+ " ('l', 'x'): 'f',\n",
+ " ('m', 'c'): 'x',\n",
+ " ('m', 'd'): 'y',\n",
+ " ('m', 'l'): 'w',\n",
+ " ('m', 'm'): 'z',\n",
+ " ('m', 'x'): 'v',\n",
+ " ('x', 'c'): 'c',\n",
+ " ('x', 'd'): 'd',\n",
+ " ('x', 'l'): 'b',\n",
+ " ('x', 'm'): 'e',\n",
+ " ('x', 'x'): 'a'}"
+ ]
+ },
+ "execution_count": 14,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "polybius_reverse_grid('', order, order)"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 15,
+ "metadata": {},
+ "outputs": [],
+ "source": [
+ "def polybius_flatten(pair, column_first):\n",
+ " if column_first:\n",
+ " return str(pair[1]) + str(pair[0])\n",
+ " else:\n",
+ " return str(pair[0]) + str(pair[1])"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 16,
+ "metadata": {},
+ "outputs": [],
+ "source": [
+ "def polybius_encipher(message, keyword, column_order, row_order, \n",
+ " column_first=False,\n",
+ " letters_to_merge=None, wrap_alphabet=KeywordWrapAlphabet.from_a): \n",
+ " grid = polybius_grid(keyword, column_order, row_order, letters_to_merge, wrap_alphabet)\n",
+ " return cat(polybius_flatten(grid[l], column_first)\n",
+ " for l in message\n",
+ " if l in grid)"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 17,
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "'mllcldcxxmldddlddcdddldmxm'"
+ ]
+ },
+ "execution_count": 17,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "polybius_encipher('while it is true', '', order, order)"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 18,
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "'mllcldcxxmldddlddcdddldmxmddlcxxdddcdmxmddcdcclddmdcdcxmdddmcmddlcxmlxldccxxcxxlxxdd'"
+ ]
+ },
+ "execution_count": 18,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "sanitise(cb[:100])"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 19,
+ "metadata": {},
+ "outputs": [],
+ "source": [
+ "def polybius_decipher(message, keyword, column_order, row_order, \n",
+ " column_first=False,\n",
+ " letters_to_merge=None, wrap_alphabet=KeywordWrapAlphabet.from_a): \n",
+ " grid = polybius_reverse_grid(keyword, column_order, row_order, letters_to_merge, wrap_alphabet)\n",
+ " column_index_type = type(column_order[0])\n",
+ " row_index_type = type(row_order[0])\n",
+ " if column_first:\n",
+ " pairs = [(column_index_type(p[1]), row_index_type(p[0])) for p in chunks(message, 2)]\n",
+ " else:\n",
+ " pairs = [(row_index_type(p[0]), column_index_type(p[1])) for p in chunks(message, 2)]\n",
+ " return cat(grid[p] for p in pairs if p in grid)"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 20,
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "'whileitistrue'"
+ ]
+ },
+ "execution_count": 20,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "polybius_decipher('mllcldcxxmldddlddcdddldmxm', '', order, order)"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 21,
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "'lmcldlxcmxdldddlcdddldmdmx'"
+ ]
+ },
+ "execution_count": 21,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "polybius_encipher('whileitistrue', '', order, order, column_first=True)"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 22,
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "'kmrcvrtrotiyv'"
+ ]
+ },
+ "execution_count": 22,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "polybius_decipher('lmcldlxcmxdldddlcdddldmdmx', '', order, order)"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 23,
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "'whileitistrue'"
+ ]
+ },
+ "execution_count": 23,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "polybius_decipher('lmcldlxcmxdldddlcdddldmdmx', '', order, order, column_first=True)"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 24,
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "'52232431152444244344424515'"
+ ]
+ },
+ "execution_count": 24,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "polybius_encipher('while it is true', '', '12345', '12345')"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 25,
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "'52232431152444244344424515'"
+ ]
+ },
+ "execution_count": 25,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "polybius_encipher('while it is true', '', [1, 2, 3, 4, 5], [1, 2, 3, 4, 5])"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 26,
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "'whileitistrue'"
+ ]
+ },
+ "execution_count": 26,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "polybius_decipher('52232431152444244344424515', '', [1, 2, 3, 4, 5], [1, 2, 3, 4, 5])"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 27,
+ "metadata": {},
+ "outputs": [],
+ "source": [
+ "from multiprocessing import Pool\n",
+ "\n",
+ "def polybius_break_mp(message, column_labels, row_labels,\n",
+ " letters_to_merge=None,\n",
+ " wordlist=keywords, fitness=Pletters,\n",
+ " number_of_solutions=1, chunksize=500):\n",
+ " \"\"\"Breaks a Polybius substitution cipher using a dictionary and\n",
+ " frequency analysis\n",
+ "\n",
+ " >>> polybius_break_mp(polybius_encipher('this is a test message for the ' \\\n",
+ " 'polybius decipherment', 'elephant', 'abcde', 'abcde'), \\\n",
+ " 'abcde', 'abcde', \\\n",
+ " wordlist=['cat', 'elephant', 'kangaroo']) # doctest: +ELLIPSIS\n",
+ " (('elephant', <KeywordWrapAlphabet.from_a: 1>, 'abcde', 'abcde', False), \\\n",
+ " -54.5397...)\n",
+ " >>> polybius_break_mp(polybius_encipher('this is a test message for the ' \\\n",
+ " 'polybius decipherment', 'elephant', 'abcde', 'abcde', column_first=True), \\\n",
+ " 'abcde', 'abcde', \\\n",
+ " wordlist=['cat', 'elephant', 'kangaroo']) # doctest: +ELLIPSIS\n",
+ " (('elephant', <KeywordWrapAlphabet.from_a: 1>, 'abcde', 'abcde', True), \\\n",
+ " -54.5397...)\n",
+ " >>> polybius_break_mp(polybius_encipher('this is a test message for the ' \\\n",
+ " 'polybius decipherment', 'elephant', 'abcde', 'abcde', column_first=False), \\\n",
+ " 'abcde', 'abcde', \\\n",
+ " wordlist=['cat', 'elephant', 'kangaroo']) # doctest: +ELLIPSIS\n",
+ " (('elephant', <KeywordWrapAlphabet.from_a: 1>, 'abcde', 'abcde', False), \\\n",
+ " -54.5397...)\n",
+ " >>> polybius_break_mp(polybius_encipher('this is a test message for the ' \\\n",
+ " 'polybius decipherment', 'elephant', 'abcde', 'pqrst', column_first=True), \\\n",
+ " 'abcde', 'pqrst', \\\n",
+ " wordlist=['cat', 'elephant', 'kangaroo']) # doctest: +ELLIPSIS\n",
+ " (('elephant', <KeywordWrapAlphabet.from_a: 1>, 'abcde', 'pqrst', True), \\\n",
+ " -54.5397...)\n",
+ " \"\"\"\n",
+ " if letters_to_merge is None: \n",
+ " letters_to_m53880erge = {'j': 'i'}\n",
+ " with Pool() as pool:\n",
+ " helper_args = [(message, word, wrap, \n",
+ " column_labels, row_labels, column_first, \n",
+ " letters_to_merge, \n",
+ " fitness)\n",
+ " for word in wordlist\n",
+ " for wrap in KeywordWrapAlphabet\n",
+ " for column_first in [False, True]]\n",
+ " # Gotcha: the helper function here needs to be defined at the top level\n",
+ " # (limitation of Pool.starmap)\n",
+ " breaks = pool.starmap(polybius_break_worker, helper_args, chunksize)\n",
+ " if number_of_solutions == 1:\n",
+ " return max(breaks, key=lambda k: k[1])\n",
+ " else:\n",
+ " return sorted(breaks, key=lambda k: k[1], reverse=True)[:number_of_solutions]\n",
+ "\n",
+ "def polybius_break_worker(message, keyword, wrap_alphabet, \n",
+ " column_order, row_order, column_first, \n",
+ " letters_to_merge, \n",
+ " fitness):\n",
+ " plaintext = polybius_decipher(message, keyword, \n",
+ " column_order, row_order, \n",
+ " column_first=column_first,\n",
+ " letters_to_merge=letters_to_merge, \n",
+ " wrap_alphabet=wrap_alphabet)\n",
+ " if plaintext:\n",
+ " fit = fitness(plaintext)\n",
+ " else:\n",
+ " fit = float('-inf')\n",
+ " logger.debug('Polybius break attempt using key {0} (wrap={1}, merging {2}), '\n",
+ " 'columns as {3}, rows as {4} (column_first={5}) '\n",
+ " 'gives fit of {6} and decrypt starting: '\n",
+ " '{7}'.format(keyword, wrap_alphabet, letters_to_merge,\n",
+ " column_order, row_order, column_first,\n",
+ " fit, sanitise(plaintext)[:50]))\n",
+ " return (keyword, wrap_alphabet, column_order, row_order, column_first), fit"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 28,
+ "metadata": {},
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "CPU times: user 2.67 s, sys: 308 ms, total: 2.98 s\n",
+ "Wall time: 3min 58s\n"
+ ]
+ },
+ {
+ "data": {
+ "text/plain": [
+ "(('a', <KeywordWrapAlphabet.from_a: 1>, 'xlcdm', 'xlcdm', False),\n",
+ " -3018.8648333417113)"
+ ]
+ },
+ "execution_count": 28,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "%time polybius_break_mp(sanitise(cb), order, order)"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 29,
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "(('elephant',\n",
+ " <KeywordWrapAlphabet.from_a: 1>,\n",
+ " [1, 2, 3, 4, 5],\n",
+ " [1, 2, 3, 4, 5],\n",
+ " True),\n",
+ " -54.53880323982303)"
+ ]
+ },
+ "execution_count": 29,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "polybius_break_mp(polybius_encipher('this is a test message for the ' \\\n",
+ " 'polybius decipherment', 'elephant', \\\n",
+ " [1, 2, 3, 4, 5], [1, 2, 3, 4, 5], \\\n",
+ " KeywordWrapAlphabet.from_last), \\\n",
+ " [1, 2, 3, 4, 5], [1, 2, 3, 4, 5], \\\n",
+ " wordlist=['cat', 'elephant', 'kangaroo'])"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 30,
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "'2214445544551522115522511155551543114252542214111352123234442355411135441314115451112122'"
+ ]
+ },
+ "execution_count": 30,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "polybius_encipher('this is a test message for the ' \\\n",
+ " 'polybius decipherment', 'elephant', \\\n",
+ " [1, 2, 3, 4, 5], [1, 2, 3, 4, 5], \\\n",
+ " wrap_alphabet=KeywordWrapAlphabet.from_last)"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 31,
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "(('elephant',\n",
+ " <KeywordWrapAlphabet.from_last: 2>,\n",
+ " [1, 2, 3, 4, 5],\n",
+ " [1, 2, 3, 4, 5],\n",
+ " False),\n",
+ " -54.53880323982303)"
+ ]
+ },
+ "execution_count": 31,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "polybius_break_mp('2214445544551522115522511155551543114252542214111352123234442355411135441314115451112122', \\\n",
+ " [1, 2, 3, 4, 5], [1, 2, 3, 4, 5], \\\n",
+ " wordlist=['cat', 'elephant', 'kangaroo'])"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 32,
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "'thisisatestmessageforthepolybiusdecipherment'"
+ ]
+ },
+ "execution_count": 32,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "polybius_decipher('2214445544551522115522511155551543114252542214111352123234442355411135441314115451112122', \\\n",
+ " 'elephant',\n",
+ " [1, 2, 3, 4, 5], [1, 2, 3, 4, 5], \\\n",
+ " wrap_alphabet=KeywordWrapAlphabet.from_last)"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 33,
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "{(1, 1): 'e',\n",
+ " (1, 2): 'l',\n",
+ " (1, 3): 'p',\n",
+ " (1, 4): 'h',\n",
+ " (1, 5): 'a',\n",
+ " (2, 1): 'n',\n",
+ " (2, 2): 't',\n",
+ " (2, 3): 'b',\n",
+ " (2, 4): 'c',\n",
+ " (2, 5): 'd',\n",
+ " (3, 1): 'f',\n",
+ " (3, 2): 'g',\n",
+ " (3, 3): 'i',\n",
+ " (3, 4): 'k',\n",
+ " (3, 5): 'm',\n",
+ " (4, 1): 'o',\n",
+ " (4, 2): 'q',\n",
+ " (4, 3): 'r',\n",
+ " (4, 4): 's',\n",
+ " (4, 5): 'u',\n",
+ " (5, 1): 'v',\n",
+ " (5, 2): 'w',\n",
+ " (5, 3): 'x',\n",
+ " (5, 4): 'y',\n",
+ " (5, 5): 'z'}"
+ ]
+ },
+ "execution_count": 33,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "polybius_reverse_grid('elephant', [1, 2, 3, 4, 5], [1, 2, 3, 4, 5] )"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 34,
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "4"
+ ]
+ },
+ "execution_count": 34,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "type(2)('4')"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 35,
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "'bbadccddccddaebbaaddbbceaaddddaecbaacadadcbbadaaacdaabedbcccdeddbeaabdccacadaadcceaababb'"
+ ]
+ },
+ "execution_count": 35,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "polybius_encipher('this is a test message for the ' \\\n",
+ " 'polybius decipherment', 'elephant', 'abcde', 'abcde', column_first=False)"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 36,
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "'bbdaccddccddeabbaaddbbecaaddddeabcaaacadcdbbdaaacaadbadecbccedddebaadbcccadaaacdecaaabbb'"
+ ]
+ },
+ "execution_count": 36,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "polybius_encipher('this is a test message for the ' \\\n",
+ " 'polybius decipherment', 'elephant', 'abcde', 'abcde', column_first=True)"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 37,
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "'toisisvtestxessvbephktoefhnugiysweqifoekxelt'"
+ ]
+ },
+ "execution_count": 37,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "polybius_decipher('bbdaccddccddeabbaaddbbecaaddddeabcaaacadcdbbdaaacaadbadecbccedddebaadbcccadaaacdecaaabbb', 'elephant', 'abcde', 'abcde', column_first=False)"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 38,
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "'thisisatestmessageforthepolybiusdecipherment'"
+ ]
+ },
+ "execution_count": 38,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "polybius_decipher('bbdaccddccddeabbaaddbbecaaddddeabcaaacadcdbbdaaacaadbadecbccedddebaadbcccadaaacdecaaabbb', 'elephant', 'abcde', 'abcde', column_first=True)"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 39,
+ "metadata": {
+ "scrolled": true
+ },
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "(('elephant', <KeywordWrapAlphabet.from_a: 1>, 'abcde', 'abcde', False),\n",
+ " -54.53880323982303)"
+ ]
+ },
+ "execution_count": 39,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "polybius_break_mp(polybius_encipher('this is a test message for the ' \\\n",
+ " 'polybius decipherment', 'elephant', 'abcde', 'abcde'), \\\n",
+ " 'abcde', 'abcde',\n",
+ " wordlist=['cat', 'elephant', 'kangaroo'])"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 40,
+ "metadata": {
+ "scrolled": true
+ },
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "(('elephant', <KeywordWrapAlphabet.from_a: 1>, 'abcde', 'abcde', True),\n",
+ " -54.53880323982303)"
+ ]
+ },
+ "execution_count": 40,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "polybius_break_mp(polybius_encipher('this is a test message for the ' \\\n",
+ " 'polybius decipherment', 'elephant', 'abcde', 'abcde', column_first=True), \\\n",
+ " 'abcde', 'abcde',\n",
+ " wordlist=['cat', 'elephant', 'kangaroo'])"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 41,
+ "metadata": {
+ "scrolled": true
+ },
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "(('elephant', <KeywordWrapAlphabet.from_a: 1>, 'abcde', 'abcde', False),\n",
+ " -54.53880323982303)"
+ ]
+ },
+ "execution_count": 41,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "polybius_break_mp(polybius_encipher('this is a test message for the ' \\\n",
+ " 'polybius decipherment', 'elephant', 'abcde', 'abcde', column_first=False), \\\n",
+ " 'abcde', 'abcde',\n",
+ " wordlist=['cat', 'elephant', 'kangaroo'])"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 42,
+ "metadata": {
+ "scrolled": true
+ },
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "(('elephant', <KeywordWrapAlphabet.from_a: 1>, 'abcde', 'pqrst', True),\n",
+ " -54.53880323982303)"
+ ]
+ },
+ "execution_count": 42,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "polybius_break_mp(polybius_encipher('this is a test message for the ' \\\n",
+ " 'polybius decipherment', 'elephant', 'abcde', 'pqrst', column_first=True), \\\n",
+ " 'abcde', 'pqrst',\n",
+ " wordlist=['cat', 'elephant', 'kangaroo'])"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 43,
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "'bwaycxdycxdyazbwavdybwczavdydyazcwavcvdvdxbwayavaxdvaweybxcxdzdybzavbycxaxayavdxczavbvbw'"
+ ]
+ },
+ "execution_count": 43,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "polybius_encipher('this is a test message for the ' \\\n",
+ " 'polybius decipherment', 'elephant', 'abcde', 'vwxyz')"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 44,
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "'thisisatestmessageforthepolybiusdecipherment'"
+ ]
+ },
+ "execution_count": 44,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "polybius_decipher('bwaycxdycxdyazbwavdybwczavdydyazcwavcvdvdxbwayavaxdvaweybxcxdzdybzavbycxaxayavdxczavbvbw', \n",
+ " 'elephant', 'abcde', 'vwxyz')"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 45,
+ "metadata": {},
+ "outputs": [],
+ "source": [
+ "logger.setLevel(logging.DEBUG)"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 46,
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "(('elephant', <KeywordWrapAlphabet.from_a: 1>, 'abcde', 'vwxyz', False),\n",
+ " -54.53880323982303)"
+ ]
+ },
+ "execution_count": 46,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "polybius_break_mp('bwaycxdycxdyazbwavdybwczavdydyazcwavcvdvdxbwayavaxdvaweybxcxdzdybzavbycxaxayavdxczavbvbw', \\\n",
+ " 'abcde', 'vwxyz',\n",
+ " wordlist=['cat', 'elephant', 'kangaroo'])"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 47,
+ "metadata": {},
+ "outputs": [],
+ "source": [
+ "logger.debug('test')"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": null,
+ "metadata": {},
+ "outputs": [],
+ "source": []
+ }
+ ],
+ "metadata": {
+ "kernelspec": {
+ "display_name": "Python 3",
+ "language": "python",
+ "name": "python3"
+ },
+ "language_info": {
+ "codemirror_mode": {
+ "name": "ipython",
+ "version": 3
+ },
+ "file_extension": ".py",
+ "mimetype": "text/x-python",
+ "name": "python",
+ "nbconvert_exporter": "python",
+ "pygments_lexer": "ipython3",
+ "version": "3.5.3"
+ }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 2
+}
projects / cipher-tools.git / blobdiff