How to convert PKCS#8-formatted PEM private key to the traditional format?

Question

From OpenSSL 1.0 change log:

Make PKCS#8 the default write format for private keys, replacing the traditional format. This form is standardis

Answer 1

Succeeded to solve that in that way - the request:

openssl req -configconfigfile.cfg -newkey rsa:2048 -keyout newkey.pem -out newreq.pem 365

Then, I converted it to RSA format:

openssl rsa -in newkey.pem -out newkey.pem

Hope that it will help someone.