Done Feature Scanning

src/generator.keys.rb

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+#!/usr/bin/env ruby
+# encoding: utf-8
+
+require 'optparse'
+require 'openssl'
+
+public_key_file = nil
+private_key_file = nil
+
+OptionParser.new do |opts|
+  opts.banner = "Usage: generator.keys.rb [options]"
+
+  opts.on("--public-key PATH", "Specify public key file (required)") do |v|
+    public_key_file = File.expand_path(v)
+  end
+
+  opts.on("--private-key PATH", "Specify private key file (required)") do |v|
+    private_key_file = File.expand_path(v)
+  end
+
+  opts.on("-h", "--help", "Prints this help") do
+    puts opts
+    exit
+  end
+end.parse!
+
+if public_key_file.nil? || private_key_file.nil?
+  puts "[!] missing required options"
+  puts "[!] use -h for help"
+  exit 1
+end
+
+if File.exist?(private_key_file) || File.exist?(public_key_file)
+  puts "[!] key pair already exists"
+  puts "[!] remove them if you want to regenerate"
+  exit 1
+end
+
+puts "[*] generating rsa key pair..."
+key = OpenSSL::PKey::RSA.new(2048)
+File.write(private_key_file, key.to_pem)
+File.write(public_key_file, key.public_key.to_pem)
+
+puts "[*] done"