问题
From 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 implicit MD5 dependency. [Steve Henson]
However, I need the private key file in the previous, traditional format. Is it possible to convert the pem file from PKCS#8 to the traditional format (using OpenSSL.exe app)?
Thank you very much!
回答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.
来源：https://stackoverflow.com/questions/2957742/how-to-convert-pkcs8-formatted-pem-private-key-to-the-traditional-format