re_sign_cert

# File lib/rubygems/security/signer.rb, line 43
  def self.re_sign_cert(expired_cert, expired_cert_path, private_key)
    return unless expired_cert.not_after < Time.now

    expiry = expired_cert.not_after.strftime('%Y%m%d%H%M%S')
    expired_cert_file = "#{File.basename(expired_cert_path)}.expired.#{expiry}"
    new_expired_cert_path = File.join(Gem.user_home, ".gem", expired_cert_file)

    Gem::Security.write(expired_cert, new_expired_cert_path)

    re_signed_cert = Gem::Security.re_sign(
      expired_cert,
      private_key,
      (Gem::Security::ONE_DAY * Gem.configuration.cert_expiration_length_days)
    )

    Gem::Security.write(re_signed_cert, expired_cert_path)

    yield(expired_cert_path, new_expired_cert_path) if block_given?
  end