Encrypt files and strings with AES and Pycrypto

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Pycrypto is a collection of cryptographic modules for Python. It has secure hash functions and symmetric encryption algorithms. It has not been in development for quite some time and it’s kinda getting phased out. However, I think the interest stems from the ability to encrypt files with strong AES encryption using a password.

So that’s exactly what I’ll show you how to do in this video.

If you’re not sure what symmetric encryption is, or where it fits into the whole encryption framework, you can look at my original video on symmetric encryption, which gives a super quick and simple overview

First, we need to install the pycrypto library. This can be a bit tricky to install at times so best to run a pip3 list first to ensure that you do now have other conflicting encryption libraries installed. There are some know issues with Pycrypto and Pycryptodome for instance so that’s one you may need to remove if present.

The install is straightforward. I am using Python 3.8 here. I have it running on 3.6 and 3.7 as well.

[SaiRam-ydpx]

hello sir i am getting this error
Object type <class 'str'> cannot be passed to C code

[cameronmann]

When trying to add the file, I get an error message "[Errno 13] Permission denied:" Any ideas on why this is/ how to fix it?

[noaprevilon]

What's the name of the program u start the video in?

[saravananaryan]

The iv value should be same for both encryption and decryption??

[sebastianestrada]

How do I decrypt this in node js?. With a text it works but with a file it doesn't.

[nora]

thank you for the video, but i tried the code and i got an error (ValueError: Data must be padded to 16 byte boundary in CBC mode)

[ВсеволодОвчинииков]

hello, i cannot install pycrypto for python 3.8

[oubaidas]

I could not install pycrypto. can you help ?

[MyDavidsen]

This code is not running in Python 3.7 and upper. must be modified with unit64

[bhawanasharma]

hey why password is there? what purpose does it serve

[pniavis]

I think that padding with spaces or any other predefined character is insecure.

[ardiannewstar]

bro i had a problem with instaling pycrypto

[judeleon]

Thanks so much. This was really helpful

[maxxhiaro]

from Crypto.Cipher import AES
File "C:\Users\Lol\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.7_qbz5n2kfra8p0\LocalCache\local-packages\Python37\site-packages\Crypto\__init__.py", line 35, in <module>
from StringIO import StringIO
ModuleNotFoundError: No module named 'StringIO'

...ok now i can burn my pc