Pycryptodome Python3 RSA.importKey阻止/挂起

Question

I am running Python 3.5.2 with the latest version of Pycryptodome.

When importing my RSA private key using RSA.importKey there is an infinite hang or block. I've tried to step through the lib and cannot find any reason why.

The private key is an RSA private key in PEM format. ie I am passing a byte array of the key.

I get no exceptions just a hang making message signing impossible. Has anyone else encountered a similar problem with a solution? If it helps, this is running on Linux.

Answer 1

One neat solution is taken from another SO question and it is based on lptrace . You get the PID of the python process and then run:

sudo python lptrace -p $STUCK_PROGRAM_PID

Once you have identified at least the offending line, you can log a bug on the project's page and get more help there.