rubysha.rb

require 'openssl'
require 'base64'

def gather_args
  args = Array.new

  # Only accepts two arguments
  raise if ARGV.length > 2

  ARGV.each do |a|
    args << a
  end

  puts "----- Printing Arguments -----"
  puts "> secret: #{args[0]}"
  puts "> base_string: #{args[1]}"

  return args
end

def create_hash(key, data)
  digest = OpenSSL::Digest.new('sha1')
  return OpenSSL::HMAC.hexdigest(digest, key, data)
end

def base_64_encode(hmac)
  return Base64.encode64(hmac)
end

args = gather_args
hmac = create_hash(args[0], args[1])
puts base_64_encode(hmac)