def __init__(self): # pragma: no cover
self.methods = [
self.Base64,
self.Ascii,
self.Base16,
self.Base32,
self.Binary,
self.Hex,
self.MorseCode,
self.Reverse,
self.Vigenere,
]
self.morse_dict = dict(cipheydists.get_charset("morse"))
self.letters = string.ascii_lowercase
self.group = cipheydists.get_charset("english")["lcase"]
def __init__(
self,
text: str,
flip: bool = bool(random.randint(0, 1)),
randomize: bool = True,
key: list = None,
):
self.ASCII = cipheydists.get_charset("asciiTable")
self.text = text.lower()
self.ctext = ""
self.flip = flip
self.randomize = randomize
self.key = key
def decrypt(self, message):
logger.debug("Trying caesar Cipher")
# Convert it to lower case
#
# TODO: handle different alphabets
message = message.lower()
# Hand it off to the core
group = cipheydists.get_charset("english")["lcase"]
expected = cipheydists.get_dist("lcase")
analysis = cipheycore.analyse_string(message)
possible_keys = cipheycore.caesar_crack(analysis, expected, group)
n_candidates = len(possible_keys)
logger.debug(f"Caesar cipher core heuristic returned {n_candidates} candidates")
for candidate in possible_keys:
translated = cipheycore.caesar_decrypt(message, candidate.key, group)
result = self.lc.checkLanguage(translated)
if result:
logger.debug(f"Caesar cipher returns true {result}")
return {
"lc": self.lc,
"IsPlaintext?": True,
"Plaintext": translated,
"Cipher": "Caesar",
"Extra Information": f"The rotation used is {candidate.key}",
}
# if none of them match English, return false!
logger.debug(f"Caesar cipher returns false")
return {
"lc": self.lc,
"IsPlaintext?": False,
"Plaintext": None,
"Cipher": "Caesar",
"Extra Information": None,
}
def __init__(self, lc):
self.lc = lc
self.ALLOWED = [".", "-", " ", "/", "\n"]
self.MORSE_CODE_DICT = dict(cipheydists.get_charset("morse"))
self.MORSE_CODE_DICT_INV = {v: k for k, v in self.MORSE_CODE_DICT.items()}