load_default_cert

# File lib/rubygems/commands/cert_command.rb, line 209
  def load_default_cert
    cert_file = File.join Gem.default_cert_path
    cert = File.read cert_file
    options[:issuer_cert] = OpenSSL::X509::Certificate.new cert
  rescue Errno::ENOENT
    alert_error        "--certificate not specified and ~/.gem/gem-public_cert.pem does not exist"

    terminate_interaction 1
  rescue OpenSSL::X509::CertificateError
    alert_error        "--certificate not specified and ~/.gem/gem-public_cert.pem is not valid"

    terminate_interaction 1
  end