How do I solve the issue “No module name Botan”

Question

I am using windows 8 and python 3.6.1 I've done the following command in my cmd:

pip install cryptoshop

However, when I run the following python code:

from cryptoshop import encryptfile
from cryptoshop import decryptfile

result1 = encryptfile(filename="test", passphrase="mypassphrase", algo="srp")
print(result1)

result2 = decryptfile(filename="test.cryptoshop", passphrase="mypassphrase")
print(result2)

I get the following error:

Traceback (most recent call last): File "C:/Users/Owner/Desktop/test.py", line 1, in from cryptoshop import encryptfile File "C:\Users\Owner\AppData\Local\Programs\Python\Python36-32\lib\site-packages\cryptoshop__init__.py", line 26, in from cryptoshop.cryptoshop import encryptfile File "C:\Users\Owner\AppData\Local\Programs\Python\Python36-32\lib\site-packages\cryptoshop\cryptoshop.py", line 56, in from ._cascade_engine import encry_decry_cascade File "C:\Users\Owner\AppData\Local\Programs\Python\Python36-32\lib\site-packages\cryptoshop_cascade_engine.py", line 27, in from ._nonce_engine import generate_nonce_timestamp File "C:\Users\Owner\AppData\Local\Programs\Python\Python36-32\lib\site-packages\cryptoshop_nonce_engine.py", line 39, in import botan ModuleNotFoundError: No module named 'botan'

Now, I obviously know that you must install botan into python in order to use it. However, this is where I am running into an issue. I've downloaded Botan from this link as instructed:

https://github.com/randombit/botan

And then I've followed these instructions in an attempt to install Botan:

./configure.py [--prefix=/some/directory]
make
make install

However, when I type make into the command line I get an error saying there is no such command. And then when I go to run my above Python code I still get the no module Botan error. So obviously I am doing something run. How can I properly install Botan into my Python 3.6 directories so that I can use cryptoshop.

I've also attempted to do pip install Botan, as that is how I've installed so many other python libraries but that has been unsuccessful as well.

Answer 1

make is a linux command

According to the botan website you can use nmake as a replacement on windows ( http://wiki.c2.com/?UsingNmake ) :

On Windows

You need to have a copy of Python installed, and have both Python and your chosen compiler in your path. Open a command shell (or the SDK shell), and run:

  $ python configure.py --cc=msvc (or --cc=gcc for MinGW) [--cpu=CPU] 
  $ nmake 
  $ botan-test.exe 
  $ nmake install

Botan supports the nmake replacement Jom which enables you to run multiple build jobs in parallel.

source : https://botan.randombit.net/manual/building.html

Answer 2

For completeness, here's how I made it work on a Mac

Assuming you have brew installed.

brew install botan

You may need to install other functionality first:

brew install gmp
brew install mpfr
brew install mpc

Find out where botan got installed with brew info botan. My location is /usr/local/Cellar/botan/2.6.0

In that folder, you'll find lib/python2.7/site-packages, copy the contents of this folder into your Python's installation site-packages folder.

Note 1: At the time of this writing, only python 2.7 seems to be supported, but I'm using python 3.6 and everything seems to be working.

Note 2: If the file is called botan2.py, you may need to rename it to botan.py in your python's site-packages folder.