{
"errorMessage": "/var/task/cryptography/hazmat/bindings/_constant_time.abi3.so: invalid ELF header",
"errorType": "ImportError"
}
...then you need to include required libraries used by your Lambda function.The problem arises when attempting to package up libraries from the OS on which you are developing and the OS to which you are deploying has different dependency requirements.
For example the libraries required on Windows are different than the libraries required by an AWS Linux EC2 instance when dealing with C libraries.
The solution is to do this packaging with virtual env on an EC2 instance, which will then package up compatible libraries for your Lambda function.
---
Trying to set up a Python virtual environment that has the correct libraries and/or works on AWS Lambda? Check out these blog posts which are specific to Paramiko and Cryptography but explain how to determine which libraries to use and package up a virtual environment that has the correct underlying libraries:
http://websitenotebook.blogspot.com/2017/05/installing-paramiko-and-crytography-in.html
http://websitenotebook.blogspot.com/2017/05/creating-paramiko-and-cryptography.html
