CSR Generator

This project is a Python script for generating Certificate Signing Requests (CSRs) and verifying the consistency between CSRs, certificates, and private keys.

Requirements

Ensure you have Python 3.6 or higher installed. Install the required dependencies by running:

python -m venv .venv
source .venv/bin/activate  # On Windows use `.venv\Scripts\activate`
pip install -r requirements.txt

Features

Generate a New CSR

The script allows you to generate a CSR and a private key. During the process, you can configure:

• CSR Names: Country, State, Locality, Organization Name, Organizational Unit, Common Name.
• Key Usage
• SANs (Subject Alternative Names)

The generated files are saved in the current directory with a timestamp in their names:

• <timestamp>_csr.csr
• <timestamp>_key.pem

Verify Credentials

The script can verify if a CSR, a certificate, and a private key match. You need to provide the file paths for:

• Private key (.pem)
• CSR (.csr)
• Certificate (.crt)

The script compares the public key modulus of the files to determine if they match.

Usage

Run the script with:

python csr_gen.py

Main Menu

The script presents a menu with two options:

• Generate new CSR: to create a new CSR.
• Verify your credentials: to verify the consistency between a CSR, certificate, and private key.

Project Structure

• csrgen.py: Main script for generating and verifying CSRs.
• requirements.txt: List of required dependencies.