SSL Certificate Generation Script 📝

This script is a bash shell script that generates SSL certificates for use with web servers. The script generates a self-signed certificate for a certificate authority (CA) and a signed certificate for a web server.

Requirements

The script requires the OpenSSL library to be installed on the system. It has been tested on Ubuntu and macOS, and should work on other Unix-like systems as well.

Usage

To use the script, simply run it from the command line with root privileges:

sudo ./generate_ssl_cert.sh

The script performs the following steps:

• Remove any existing .pem files in the current directory.
• Generate a private key and a self-signed certificate for the CA.
• Display the self-signed certificate for the CA.
• Generate a private key and a certificate signing request (CSR) for the web server.
• Use the CA's private key to sign the web server's CSR and generate a signed certificate for the web server.
• Display the signed certificate for the web server.
• Verify the signed certificate using the CA's certificate.

The generated files will be saved in the current directory.

Customization

The script can be customized by modifying the following values:

• The subj parameter in the openssl req commands can be changed to customize the details of the certificates.
• The days parameter in the CA and server certificate generation commands can be changed to adjust the validity period of the certificates.
• The filenames of the generated certificates can be changed by modifying the output file names in the commands.

Security

This script is designed for generating SSL certificates for development and testing purposes only. It should not be used for production systems. The generated certificates are self-signed and not trusted by any certificate authority. Therefore, they are vulnerable to man-in-the-middle attacks. For production systems, you should use certificates issued by a trusted certificate authority.