Error with pycripto and AWS-Lambda

Question

I'm trying to use pycrypto and lambda service, but every time that i run my script lambda service return:

Unable to import module 'service': /var/task/Crypto/Cipher/_AES.so: invalid ELF header

I don't know why is happen if someone have the same problem, please help me.

Thank you everyone.

Joe Perks · Accepted Answer · 2016-09-26 19:08:05Z

1

I ran into this same issue, had to build my deployable zip on a Linux VM.

As alex-luminul comments in this issue, it may be due to the OSX-compatible shared library _AES.so being sent to Lambda, where Lambda requires Linux compatible shared libraries.

answered Sep 26, 2016 at 19:08

Joe Perks

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stefansundin · Accepted Answer · 2016-10-15 04:36:15Z

0

There are some people who have pre-compiled some python packages for use in AWS Lambda. For example the pip package lambda_packages and a GitHub repository called awslambda-pycrypto.

I picked the latter since I only needed PyCrypto in my function. To use it, I downloaded the awslambda-pycrypto repository and then put the files in a directory named "modules", and then I loaded the code like so:

import sys
sys.path.insert(0, "./modules")
from Crypto.Cipher import AES

You then have to zip the directory that contains your function and upload it to Lambda.

answered Oct 15, 2016 at 4:36

stefansundin

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