Key Exchange

The merchant must provide the public key and Device Serial Number to Finexus.
Finexus will then provide the Finexus public key and source system to the merchant.

To retrieve the Device Serial Number, go to Settings > System > About > Status.

Set Up OpenSSL

Step 1 : Download SSL file

Download OpenSSL-1.0.2p.zip from https://sourceforge.net/projects/openssl-for-windows/files/.

Step 2 : Set configuration and path

Set OPENSSL_CONF and Path in User Variable for user.

Generate Keypair

1. Open the Command Prompt as Administrator.
2. Navigate to the folder where you want to place the key file (e.g., cd <Drive>:\<Folder>).
3. Run the following commands to generate the key pair:

Private Key

Step 1 : Generate PEM format by RSA

openssl genrsa -out privatekey.pem 2048

Step 2 : Convert PEM to key

openssl rsa -in privatekey.pem -out private.key

Public Key

Step 1 : Generate publickey.pem from privatekey.pem

openssl rsa -in privatekey.pem -out publickey.pem -pubout -outform PEM

Step 2 : Generate publickey.key from privatekey.pem

openssl rsa -in privatekey.pem -pubout > public.key