PyOpenSSL convert certificate object to .pem file

Question

I want to send a certificate from a \"certificate authority\" to a node through sockets. I have a certificate created using this example https://skippylovesmalorie.wordpress

Answer 1

This is for generating a certificate signing request, but the concept should be the same

from OpenSSL import crypto

req = crypto.X509Req()
pkey = crypto.PKey()
pkey.generate_key(crypto.TYPE_RSA, 2048)
req.set_pubkey(pkey)
req.sign(pkey, 'sha1')
certreq = crypto.dump_certificate_request(crypto.FILETYPE_PEM, req)
certreq = certreq.replace('-----BEGIN CERTIFICATE REQUEST-----\n', '').replace('-----END CERTIFICATE REQUEST-----\n', '')
private_key = crypto.dump_privatekey(crypto.FILETYPE_PEM, pkey)

for a certificate you can use:

crypto.dump_certificate(type, cert)