WebsiteKeypairGenScript

#! /bin/bash

clear

echo "Generating 4096-bit RSA key in PEM format..."
openssl genrsa -out private_key.pem 4096
echo "Done"

echo "Extracting public key..."
openssl rsa -in private_key.pem -out public_key.pem -pubout
echo "Done"

echo "Restricting permissions to 600 for both keys..."
chmod 600 private_key.pem
echo "Private key restricted"
chmod 600 public_key.pem
echo "Public key restricted"

echo "Copying public key into OpenSSH (.pub) format..."
ssh-keygen -y -f private_key.pem > public_key.pub
echo "Done"

echo "Generating SSH2 fingerprint of public key..."
ssh-keygen -l -f public_key.pub > ssh2_fingerprint.txt
echo "Done"

echo "Keypair and fingerprint generation complete"
echo