new

# File lib/rubygems/security/signer.rb, line 68
  def initialize(key, cert_chain, passphrase = nil, options = {})
    @cert_chain = cert_chain
    @key        = key
    @passphrase = passphrase
    @options = DEFAULT_OPTIONS.merge(options)

    unless @key
      default_key  = File.join Gem.default_key_path
      @key = default_key if File.exist? default_key
    end

    unless @cert_chain
      default_cert = File.join Gem.default_cert_path
      @cert_chain = [default_cert] if File.exist? default_cert
    end

    @digest_algorithm = Gem::Security::DIGEST_ALGORITHM
    @digest_name      = Gem::Security::DIGEST_NAME

    if @key && !@key.is_a?(OpenSSL::PKey::RSA)
      @passphrase ||= ask_for_password("Enter PEM pass phrase:")
      @key = OpenSSL::PKey::RSA.new(File.read(@key), @passphrase)
    end

    if @cert_chain
      @cert_chain = @cert_chain.compact.map do |cert|
        next cert if OpenSSL::X509::Certificate === cert

        cert = File.read cert if File.exist? cert

        OpenSSL::X509::Certificate.new cert
      end

      load_cert_chain
    end
  end