class Gem::Commands::CertCommand

def load_default_key
  key_file = File.join Gem.default_key_path
  key = File.read key_file
  passphrase = ENV['GEM_PRIVATE_KEY_PASSPHRASE']
  options[:key] = OpenSSL::PKey::RSA.new key, passphrase
rescue Errno::ENOENT
  alert_error \
    "--private-key not specified and ~/.gem/gem-private_key.pem does not exist"
  terminate_interaction 1
rescue OpenSSL::PKey::RSAError
  alert_error \
    "--private-key not specified and ~/.gem/gem-private_key.pem is not valid"
  terminate_interaction 1
end