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
assert gethyphenstr(r"c:\WINDOWS\system32\drivers\http.sys") == r"c:\WINDOW [...] \http.sys"
assert getbinstr(0) == "0"
assert getbinstr(8) == "1000"
assert countmissing(0, 8) == 0
assert countmissing(3, 8) == 5
assert countmissing(8, 8) == 0
assert insert_string("abcd", 2, "1") == "ab1cd"
assert zip([1, 2], [0]) == [(1, 0)]
assert zip_extend([1, 2], [0], 0) == [(1, 0), (2, 0)]
assert zip_extend([0], [1, 2], 0) == [(1, 0), (2, 0)]
assert rorstr("abc") == "cab"
assert [rorstr("abc", i) for i in range(4)] == ['abc', 'cab', 'bca', 'abc']
assert setstr("abcde","d") == "deabc"
assert list(slice_and_pad("0001" + "0000" + "0", 4)) == ['0001', '0000', '01__']
assert list(slice_and_pad("0001" + "0000" + "00", 4)) == ['0001', '0000', '001_']
assert list(slice_and_pad("0001" + "0000" + "000", 4)) == ['0001', '0000', '0001', 'extr']
assert list(slice_and_pad("0001" + "0000" + "0000", 4)) == ['0001', '0000', '0000', '1___']
assert hex2bin("0123456789ABCDEF") == "\x01\x23\x45\x67\x89\xAB\xCD\xEF"
assert nibbleswap(0x1234, 2) == 0x2143
assert gethyphenstr(
r"c:\WINDOWS\system32\drivers\http.sys") == r"c:\WINDOW [...] \http.sys"
assert getbinstr(0) == "0"
assert getbinstr(8) == "1000"
assert countmissing(0, 8) == 0
assert countmissing(3, 8) == 5
assert countmissing(8, 8) == 0
assert insert_string("abcd", 2, "1") == "ab1cd"
assert zip([1, 2], [0]) == [(1, 0)]
assert zip_extend([1, 2], [0], 0) == [(1, 0), (2, 0)]
assert zip_extend([0], [1, 2], 0) == [(1, 0), (2, 0)]
assert rorstr("abc") == "cab"
assert [rorstr("abc", i) for i in range(4)] == ['abc', 'cab', 'bca', 'abc']
assert setstr("abcde", "d") == "deabc"
assert list(slice_and_pad("0001" + "0000" + "0",
4)) == ['0001', '0000', '01__']
assert list(slice_and_pad("0001" + "0000" + "00",
4)) == ['0001', '0000', '001_']
assert list(slice_and_pad("0001" + "0000" + "000",
4)) == ['0001', '0000', '0001', 'extr']
assert list(slice_and_pad("0001" + "0000" + "0000",
4)) == ['0001', '0000', '0000', '1___']