def handler():
cText = ''
IC = 0
mono_poly = ''
key_len = 0
while True:
cmd_ = raw_input("{}{}(CipherAnalysis){} >> ".format(BUNDERLINE,BBLUE,BEND)).strip()
if cmd_ == 'help' or cmd_ == 'h' or cmd_ == '?':
help_ = helper.help_('analysis','')
print help_.format(CLIGHTBLUE,CEND)
elif cmd_.startswith('show') and cmd_.endswith('info'):
if __platform__.startswith('Linux') or __platform__.startswith('Darwin'):
header = ['Type','Result','Description']
rows = [['Cipher Text',cText,'Encrypted message'],
['Incidence of Coincidence',IC,'Incidence of Coincidence prediction'],
['Result',mono_poly,'Prediction whether monoalphabetic or polyalphabetic'],
['Key length',key_len,'Key length prediction for TheVigenereSquare cipher only']]
print
print table(rows,header,colorfmt='red')
print
else:
table_maker = PrettyTable()
table_maker.title = "Information Box"
table_maker.field_names = ["Type", "Result","Description"]
table_maker.add_row(['Cipher Text',cText,'Encrypted message'])
table_maker.add_row(['Incidence of Coincidence',IC,'Incidence of Coincidence prediction'])
table_maker.add_row(['Result',mono_poly,'Prediction whether monoalphabetic or polyalphabetic'])
table_maker.add_row(['Key length',key_len,'Key length prediction for TheVigenereSquare cipher only'])
print table_maker
elif cmd_.startswith('SET') or cmd_.startswith('set'):
try:
msg = cmd_.split()[1]
cipher = cmd_.split()[2]
if msg and msg == 'message' or msg == 'msg':
cText = cipher
else:
raise IndexError()
except IndexError:
print BERR + " Please specify message [cipher text]" + BEND
print " ex. SET message 'Cipher Text'\n"
elif cmd_ == 'execute':
if cText == '':
print BERR + "Execution Error.." + BEND
print "Please specify message [cipher text]"
IC, key_len = Analysis(cText)
if IC > 0.06:
if IC > 0.052:
mono_poly = " More likely monoalphabetic"
else:
mono_poly = " Probably monoalphabetic"
elif IC < 0.045:
mono_poly = "{}".format(random.choice([" More likely polyalphabetic"," Probably polyalphabetic"]))
print '\n' + BOKMSG + mono_poly + BEND
print BOKMSG + ' Your Incidence of Coincidence is >>{} {}'.format(BEND,IC)
print BOKMSG + ' Your key length for TheVigenereSquare cipher is >>{} {}'.format(BEND,key_len)
elif cmd_ == 'back':
break
def Table_maker(msg, key, result, DecOrEn):
encOrdec = ['encrypt', 'encryption', 'decrypt', 'decryption']
if DecOrEn == 'encrypt':
encOrdec.pop(2)
encOrdec.pop()
elif DecOrEn == 'decrypt':
encOrdec.pop(0)
encOrdec.pop(0)
help_msg = helper.help_('helper', 'msg').format(encOrdec[0])
help_key = helper.help_('helper', 'key').format(encOrdec[1])
help_result = helper.help_('helper', 'result').format(encOrdec[1])
if __platform__.startswith('Linux') or __platform__.startswith('Darwin'):
header = ['Types', 'Information', 'Helper']
rows = [["Message", msg, help_msg], ["Key", key, help_key],
["Result", result, help_result]]
table_maker = table(rows, header, colorfmt='green')
return table_maker
elif __platform__.startswith('Windows'):
table_maker = PrettyTable()
table_maker.title = "Information Box"
table_maker.field_names = ["Types", "Information", "Helper"]
table_maker.add_row(["Message", msg, help_msg])
table_maker.add_row(["Key", key, help_key])
table_maker.add_row(["Result", result, help_result])
table_maker.align = "l"
table_maker.align["Information"] = 'c'
table_maker.align["Types"] = 'c'
table_maker.max_width = 120
table_maker.hrules = 1
return table_maker
def Analysis(cipherText):
nums_0 = (0 for i in range(27))
alp = dict(zip(string.ascii_uppercase,nums_0))
for letter in cipherText:
for key,value in alp.iteritems():
if letter == key:
alp[key] += 1
header = ['Letter','Repeat Time']
rows = []
for i in string.ascii_uppercase:
rows += [[i,str(alp.get(i)) + ' ']]
table_maker = table(rows,header,colorfmt='green')
print table_maker
for key,value in alp.iteritems():
alp[key] = value * (value - 1)
IC = sum(alp.values()) / (len(cipherText) * len(cipherText) - 1)
key_len = abs(((0.027 * len(cipherText)) / (len(cipherText) - 1) * IC - 0.038 * len(cipherText) + 0.065))
IC = "%.6f" % IC
key_len = "%.2f" % key_len
return IC,key_len
def handler():
while True:
cmd_encrypt = raw_input("{}{}(Decrypt){} >> ".format(
BUNDERLINE, BBLUE, BEND)).strip()
if cmd_encrypt == 'help' or cmd_encrypt == 'h' or cmd_encrypt == '?':
help_ = helper.help_('decrypt', 'out')
print help_.format(CLIGHTBLUE, CEND)
elif cmd_encrypt.startswith('show') and cmd_encrypt.endswith(
'options'):
if __platform__.startswith('Linux') or __platform__.startswith(
'Darwin'):
header = ['ID', 'Type', 'Description']
rows = [
[
'1', 'The Additive Cipher',
'EnciphDeWord using addition'
],
[
'2', 'The Multiplicative Cipher',
'EnciphDeWord using multiplication'
],
[
'3', 'The Affine Cipher',
'EnciphDeWord using combined of addition and multiplication'
],
[
'4', 'The Hill Digraph Cipher',
'EnciphDeWord using 2x2 integer matricess'
],
[
'5', 'The Hill Digraph Cipher',
'EnciphDeWord using 3x3 integer matrices'
],
[
'6', 'The Vigenere Square (Cipher)',
'EnciphDeWord using word or string'
]
]
print
print table(rows, header, colorfmt='red')
print
else:
table_maker = PrettyTable()
table_maker.title = "Information Box"
table_maker.field_names = ["ID", "Type", "Description"]
table_maker.add_row([
"1", "The Additive Cipher", 'EnciphDeWord using addition'
])
table_maker.add_row([
"2", "The Multiplicative Cipher",
"EnciphDeWord using multiplication"
])
table_maker.add_row([
'3', 'The Affine Cipher',
'EnciphDeWord using combined of addition and multiplication'
])
table_maker.add_row([
'4', 'The Hill Digraph Cipher',
'EnciphDeWord using 2x2 integer matricess'
])
table_maker.add_row([
'5', 'The Hill Digraph Cipher',
'EnciphDeWord using 3x3 integer matrices'
])
table_maker.add_row([
'6', 'The Vigenere Square (Cipher)',
'EnciphDeWord using word or string'
])
print table_maker
elif cmd_encrypt.startswith('use'):
try:
num_given = int(cmd_encrypt.split()[1])
if num_given == 1:
loop_handler_one_key('additive', TheAdditiveCipher)
elif num_given == 2:
loop_handler_one_key('multiplicative',
TheMultiplicativeCipher)
elif num_given == 3:
loop_handler_multi_key('affine', TheAffineCipher)
elif num_given == 4:
loop_handler_multi_key('digraph', TheHillDigraphCipher)
elif num_given == 5:
loop_handler_multi_key('trigraph', TheHillTrigraphCipher)
elif num_given == 6:
loop_handler_word(TheVigenereSquare)
except ValueError:
print BERR + " Please specify ID." + BEND
print " ex. SET message 'your string'\n"
pass
except IndexError:
print BERR + " Please specify ID.\n" + BEND
print "Please type '{}show options{}' to show IDs".format(
CLIGHTBLUE, CEND)
print "ex. use [id]\n"
pass
elif cmd_encrypt == 'back':
break