Generate a self-signed certificate (for testing/development)

Use OpenSSL to create a self-signed certificate:


Step 1: Install OpenSSL (if not already installed) 

# On Ubuntu/WSL

sudo apt-get update
sudo apt-get install openssl

Step 2: Generate the certificate



# Create certs directory
mkdir -p certs
cd certs

# Generate a private key and certificate
openssl req -x509 -newkey rsa:2048 -keyout signature-key.pem -out signature-cert.pem -days 365 -nodes

# Convert to PKCS#12 format (.p12)
openssl pkcs12 -export -out signature-cert.p12 -inkey signature-key.pem -in signature-cert.pem -name "Invoice Signing Certificate"

When prompted:
  • Enter a password for the .p12 file (To use in env variable)
  • Fill in certificate details (or press Enter to skip)

This will generate the certs file for you.



Thank you.

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