# File lib/net/ssh/key_factory.rb, line 89
      def load_data_public_key(data, filename="")
        type, blob = data.split(/ /)

        raise Net::SSH::Exception, "public key at #{filename} is not valid" if blob.nil?

        blob = blob.unpack("m*").first
        reader = Net::SSH::Buffer.new(blob)
        reader.read_key or raise OpenSSL::PKey::PKeyError, "not a public key #{filename.inspect}"
      end