Generating A Private Key With Openssl

Generating an RSA key. A RSA key can be used both for encryption and for signing and generating a key is quite easy, all you have to do is the following: openssl genrsa -des3 -out privkey.pem 2048. That will generate a private key with is password protected (it will prompt you for the password during generation). If you don’t want it password.

• To generate a certificate chain and private key using the OpenSSL, complete the following steps: On the configuration host, navigate to the directory where the certificate file is required to be placed. Create a 2048 bit server private key. Openssl genrsa -out key.pem 2048 The following output is displayed.
• Reasons for importing keys include wanting to make a backup of a private key (generated keys are non-exportable, for security reasons), or if the private key is provided by an external source. This document will guide you through using the OpenSSL command line tool to generate a key pair which you can then import into a YubiKey.

This is a simple doc on generating certificates with OpenSSL.It focus on three different certificate types, exactly the classic RSA and ECDSA and the relative new RSASSA-PSS.It generates a CA and an end entity (EE) certificate for each type.The content is straightforward and concise: Commands with comments.

Please note that the commands on different certificate types are quite similar.Especially, the private key generation on different algorithms just uses tool genpkey, though some algorithms (e.g. RSA) have their own tool (e.g. genrsa).This is deliberate. In further development, these commands could be abstracted as a single common certificate generation facility.

OpenSSL configurations

RSA certificates

EC certificates

These commands and options are quit similar to those in section RSA certificates.The main difference is the private key generation.

Generate A Private Key With Openssl

RSASSA-PSS certificates

These commands and options are almost the same as those in section RSA certificates.The only difference is the public key algorithm, of course rsa-pss here.

DSA certificates

Advantages Of Private Key Encryption

These commands and options are quite similar to those in section RSA certificates.The main difference is that it needs to generate key parameters before generating key.