code: def __get_keys(self, name='master', passphrase=None):
          '''
          Returns a key object for a key in the pki-dir
          '''
          path = os.path.join(self.opts['pki_dir'],
                              name + '.pem')
          if not os.path.exists(path):
              log.info('Generating %s keys: %s', name, self.opts['pki_dir'])
              gen_keys(self.opts['pki_dir'],
                       name,
                       self.opts['keysize'],
                       self.opts.get('user'),
                       passphrase)
          if HAS_M2:
              key_error = RSA.RSAError
          else:
              key_error = ValueError
          try:
              key = get_rsa_key(path, passphrase)
          except key_error as e:
              message = 'Unable to read key: {0}; passphrase may be incorrect'.format(path)
              log.error(message)
              raise MasterExit(message)
          log.debug('Loaded %s key: %s', name, path)
          return kef __get_keys(self, name='master', passphrase=None):
          '''
          Returns a key object for a key in the pki-dir
          '''
          path = os.path.join(self.opts['pki_dir'],
                              name + '.pem')
          if not os.path.exists(path):
              log.info('Generating %s keys: %s', name, self.opts['pki_dir'])
              gen_keys(self.opts['pki_dir'],
                       name,
                       self.opts['keysize'],
                       self.opts.get('user'),
                       passphrase)
          if HAS_M2:
              key_error = RSA.RSAError
          else:
              key_error = ValueError
          try:
              key = get_rsa_key(path, passphrase)
          except key_error as e:
              message = 'Unable to read key: {0}; passphrase may be incorrect'.format(path)
              log.error(message)
              raise MasterExit(message)
          log.debug('Loaded %s key: %s', name, path)
          return key
docs: Returns a key object for a key in the pki-dir