Chapter 2. Creating RSA public-private key pair

Procedure

1. To create the private key, run the following command using the command-line interface:

   $ openssl genrsa -out key.pem 4096

   Example output

   Generating RSA private key, 4096 bit long modulus(2 primes)
   .......................++++
   .......................++++

2. To create the public key, run the following command using the command-line interface:

   $ openssl rsa -in key.pem -out pubkey.pem -outform PEM -pubout

   Example output

   writing RSA key

Verification steps

1. To check if the private key is generated, run the following command:

   $ ls

   Example output

   key.pem

2. To check if the public key is generated, run the following command:

   $ ls

   Example output

   pubkey.pem