zadammac / python-enigma Goto Github PK

Describe the bug
User Michael Zimmermann [email protected] reported that he was having trouble decrypting a known-plaintext message generated on an original Enigma M4. This message was originally produced during the war and is fully decryptable using other emulation platforms.

To Reproduce
Steps to reproduce the behavior:

1. Create an enigma machine instance with the appropriate settings (detailed below)
2. Set the wheelpack correctly.
3. Parse the encrypted message.
4. If reproducing, the wrong plaintext is sent.

Expected behavior
A new key should be generated and written to configuration, and that key should be used throughout the rest of the backup process.

Log/Console Output
Where possible, add the output of the Logs or Console when the problem occurs.

Desktop (please complete the following information):

• Not obtained. There's nothing platform-specific in this machine so... shouldn't matter.

Additional context
Add any other context about the problem here.

Reflector: C
Greek: B
Wheels: 568
Wheel positions: YOSZ
Rings: AAEL
Plugs: AE BF CM DQ HU JN LX PR SZ VW

Message indicator groups: DUHF TETO

Ciphertext (without indicator groups):
LANOTCTOUARBBFPMHPHGCZXTDYGAHGUFXGEWKBLKGJWLQXXTGPJJAVTOYJFGSLPPQIHZFXOEBWIIEKFZLCLOAQJULJOYHSSMBBGWHZANVOIIPYRBRTDJQDJJOQKCXWDNBBTYVXLYTAPGVEATXSONPNYNQFUDBBHHVWEPYEYDOHNLXKZDNWRHDUWUJUMWWVIIWZXIVIUQDRHYMNCYEFUAPNHOTKHKGDNPSAKNUAGHJZSMJBMHVTREQEDGXHLZWIFUSKDQVELNMIMITHBHDBWVHDFYHJOQIHORTDJDBWXEMEAYXGYQXOHFDMYUXXNOJAZRSGHPLWMLRECWWUTLRTTVLBHYOORGLGOWUXNXHMHYFAACQEKTHSJW

Plaintext:

KRKRALLEXXFOLGENDESISTSOFORTBEKANNTZUGEBENXXICHHABEFOLGENDENBEFEHLERHALTENXXJANSTERLEDESBISHERIGXNREICHSMARSCHALLSJGOERINGJSETZTDERFUEHRERSIEYHVRRGRZSSADMIRALYALSSEINENNACHFOLGEREINXSCHRIFTLSCHEVOLLMACHTUNTERWEGSXABSOFORTSOLLENSIESAEMTLICHEMASSNAHMENVERFUEGENYDIESICHAUSDERGEGENWAERTIGENLAGEERGEBENXGEZXREICHSLEITEIKKTULPEKKJBORMANNJXXOBXDXMMMDURNHFKSTXKOMXADMXUUUBOOIEXKP

where is the catatague.json that is supposed to be in the module ?
i can not instanciate object enigma because is not there

i installed python-enigma with pip

Could you provide some code example ?

There appears to be an issue with some combinations of rotors.
For example the code below gives the output as ECPRX LNMBQ.

from python_enigma import enigma
ciphertext = "HELLO WORLD"
plugs="AS LK DE FV GJ CU MW OT PX RZ" 
rotors = [("II", "A"), ("IV", "B"), ("III", "C")] 
machine = enigma.Enigma(catalog="default", stecker=plugs,
                    rotors=rotors, reflector="Reflector B", operator=True, word_length=5, stator="military")
machine.set_wheels("EFC")
plain=machine.parse(ciphertext)
print(plain)

Whereas if you run it through other tools you get an output of CVHFJ PBKYK.

This is using python3. Am I doing something wrong?

hello,

is this package thread safe ?
I get error when running multiple machin in thread

You can check that in the package files at PyPI there is no catalog.json file. I think this file should be included so the class can actually be used with the "default" string.

Does what it says on the tin. Requested by Michael Zimmerman.

Probably make this part of whatever push brings about an interpreter mode as well.