Create self signed SSL certificates in Python

python ssl m2crypto
Niklas picture Niklas · Sep 9, 2011 · Viewed 11.4k times · Source

I am trying to generate self signed SSL certificates using Python, so that it is platform independent. My target is the *.pem format.

I found this script that generates certificates, but no information how to self-sign them.

Answer

jfs picture jfs · Sep 9, 2011

The script you've linked doesn't create self-signed certificate; it only creates a request.

To create self-signed certificate you could use openssl it is available on all major OSes.

$ openssl req -new -x509 -key privkey.pem -out cacert.pem -days 1095

If you'd like to do it using M2Crypto then take a look at X509TestCase.test_mkcert() method.

Related questions

How can I retrieve the TLS/SSL peer certificate of a remote host using python?

I need to scan through a list of IPs and retrieve the common name from the certificate on that IP (for every IP that allows port 443 connections). I have been able to successfully do this using the sockets and ssl …

Read More
How do I verify an SSL certificate in python?

I need to verify that a certificate was signed by my custom CA. Using OpenSSL command-line utilities this is easy to do: # Custom CA file: ca-cert.pem # Cert signed by above CA: bob.cert $ openssl verify -CAfile test-ca-cert.pem bob.…

Read More
How to validate / verify an X509 Certificate chain of trust in Python?

I am working on implementing a web application that utilizes an API. During a response, the API server sends over a link to an X509 certificate (in PEM format, composed of a signing certificate and one or more intermediate certificates …

Read More