How to convert PKCS#8-formatted PEM private key to the traditional format?
stackoverflow.com/questions/2957742/how-to-convert-pkcs8-formatted-pem-private-key-to-the-traditional-formatFrom OpenSSL 1.0 change log:
Make PKCS#8 the default write format
for private keys, replacing the
traditional format. This form is standardised, more secure and doesn't
include an