def decode(string):
encoded = Str(string[:string.find("11") + 1])
num = generate_numbers(len(encoded))
value = 0
for i in encoded.indexes("1"):
value += num[i + 1]
return value
def first_sifra(data, key):
"""first bellaso substitution cipher"""
alphabet = "abcdefghilmnopqrstvxyz" # bellaso didn't use a 26 chars alphabet
constant_part, rotated_part = alphabet[:11], Str(
alphabet[11:]) # and it was split in two parts, used differently
pairs = [
alphabet[i:i + 2] for i in range(0, len(alphabet), 2)
] #each pair of letters of the key gets a different substitution alphabet
order = "aeiovcgmqsy" # this is the order of pairs, rotation-wise.
# now let's generate the substitution alphabet for each pair
# at each step (following the right order), the rotated part is rotated left one character
alphabets = dict()
for index, char in enumerate(order):
#let's get the pair by its first char in the order
current_pair = [pair for pair in pairs if char in pair][0]
alphabets[current_pair] = constant_part + (rotated_part >> index)
output = str()
for char, current_key in zip(data, key):
pair = [p for p in alphabets if current_key in p]
if pair:
char = substitute(char, alphabets[pair[0]])
output += char
return output
def second_sifra(data, key, alphabet_key):
#now the substitution alphabet is generated from a passphrase
consonants = mix_alphabet(alphabet_key, "bcdfghlmnpqrstxyz")
#then we'll work on the vowels, but we'll insert them every 3 character
#let's split the consonants string
consonants_blocks = split_string_blocks(consonants, 3)
#and parse the key for its used vowels
vowels = mix_alphabet(alphabet_key, "aeiou")
#let's merge the consonants and vowels data
alphabet = "".join(i + j
for i, j in zip_extend(consonants_blocks, list(vowels)))
#assert alphabet == "rmqacntupsbidfgehlxoyz"
constant_part, rotated_part = alphabet[:11], Str(alphabet[11:])
#now to generate the pairs, we'll do the same, but merge the vowel every char blocks
consonants_blocks = split_string_blocks(consonants, 1)
pairsString = Str("".join(
i + j for i, j in zip_extend(consonants_blocks, list(vowels))))
pairs = pairsString.splitblock(2)
#now we have the pairs, the initial substitution alphabet
#let's generate the 'rotated' alphabet for each pair
alphabets = dict()
for index, pair in enumerate(pairs):
#let's get the pair by its first char in the order
alphabets[pair] = constant_part + (rotated_part >> index)
# now the actual encryption
# for this cipher, the xth character of the key is used to decrypt the xth word (space separated) of the plaintext
output = str()
key_index = 0
for char in data:
pair = [p for p in alphabets if key[key_index] in p]
if pair:
char = substitute(char, alphabets[pair[0]])
if char == ' ':
key_index += 1
output += char
return output
def second_sifra(data, key, alphabet_key):
#now the substitution alphabet is generated from a passphrase
consonants = mix_alphabet(alphabet_key, "bcdfghlmnpqrstxyz")
#then we'll work on the vowels, but we'll insert them every 3 character
#let's split the consonants string
consonants_blocks = split_string_blocks(consonants, 3)
#and parse the key for its used vowels
vowels = mix_alphabet(alphabet_key, "aeiou")
#let's merge the consonants and vowels data
alphabet = "".join(i + j for i, j in zip_extend(consonants_blocks, list(vowels)))
#assert alphabet == "rmqacntupsbidfgehlxoyz"
constant_part, rotated_part = alphabet[:11], Str(alphabet[11:])
#now to generate the pairs, we'll do the same, but merge the vowel every char blocks
consonants_blocks = split_string_blocks(consonants, 1)
pairsString = Str("".join(i + j for i, j in zip_extend(consonants_blocks, list(vowels))))
pairs = pairsString.splitblock(2)
#now we have the pairs, the initial substitution alphabet
#let's generate the 'rotated' alphabet for each pair
alphabets = dict()
for index, pair in enumerate(pairs):
#let's get the pair by its first char in the order
alphabets[pair] = constant_part + (rotated_part >> index)
# now the actual encryption
# for this cipher, the xth character of the key is used to decrypt the xth word (space separated) of the plaintext
output = str()
key_index = 0
for char in data:
pair = [p for p in alphabets if key[key_index] in p]
if pair:
char = substitute(char, alphabets[pair[0]])
if char == ' ':
key_index += 1
output += char
return output
#Kabopan - Readable Algorithms. Public Domain, 2007-2009
from kbp.types import ( \
sub_string, add_string,
Str, List,
Byte, Dword, Word, Qword, Oword, DQword)
assert sub_string("abc", "aBc") == "_B_"
assert add_string("abc", "_B_") == "aBc"
s = Str("abcdefghij")
assert [ s, s << 1, s >> 1, (s << 1) >> 1, s << 2, s << 3, s << 4] == \
['abcdefghij', 'bcdefghija', 'jabcdefghi', 'abcdefghij', 'cdefghijab', 'defghijabc', 'efghijabcd']
assert s.setstart("d") == "defghijabc"
s = Str('abcaba')
assert s.indexes("a") == [0, 3, 5]
assert s.indexes("d") == []
s = Str("abcdefghij")
import pprint
assert [s.insert("1", 2), s.insert("12", 2), s.overwrite("1", 2), s.overwrite("12", 2)] == \
['ab1cdefghij', 'ab12cdefghij', 'ab1defghij', 'ab12efghij']
assert [s.splitblock(2), s.splitblock(3)] == [['ab', 'cd', 'ef', 'gh', 'ij'], ['abc', 'def', 'ghi', 'j']]
assert List([1, 2, 3, 4]) >> 1 == [4, 1, 2, 3]
assert List([1, 2, 3, 4]) >> 4 == [1, 2, 3, 4]
assert List([1, 2, 3, 4]) << 1 == [2, 3, 4, 1]
#Kabopan - Readable Algorithms. Public Domain, 2007-2009
from kbp.types import ( \
sub_string, add_string,
Str, List,
Byte, Dword, Word, Qword, Oword, DQword)
assert sub_string("abc", "aBc") == "_B_"
assert add_string("abc", "_B_") == "aBc"
s = Str("abcdefghij")
assert [ s, s << 1, s >> 1, (s << 1) >> 1, s << 2, s << 3, s << 4] == \
['abcdefghij', 'bcdefghija', 'jabcdefghi', 'abcdefghij', 'cdefghijab', 'defghijabc', 'efghijabcd']
assert s.setstart("d") == "defghijabc"
s = Str('abcaba')
assert s.indexes("a") == [0, 3, 5]
assert s.indexes("d") == []
s = Str("abcdefghij")
import pprint
assert [s.insert("1", 2), s.insert("12", 2), s.overwrite("1", 2), s.overwrite("12", 2)] == \
['ab1cdefghij', 'ab12cdefghij', 'ab1defghij', 'ab12efghij']
assert [s.splitblock(2), s.splitblock(3)] == [['ab', 'cd', 'ef', 'gh', 'ij'],
['abc', 'def', 'ghi', 'j']]
assert List([1, 2, 3, 4]) >> 1 == [4, 1, 2, 3]
assert List([1, 2, 3, 4]) >> 4 == [1, 2, 3, 4]
assert List([1, 2, 3, 4]) << 1 == [2, 3, 4, 1]