text: import logging
  import copy
  import os
  from cli_common import run_proc
  
  class GnuPG(object):
      def __init__(self, homedir, gpg_path):
          self.__gpg = gpg_path
          self.__common_params = ['--homedir', homedir, '--yes']
          self.__password = None
          self.__userid = None
          self.__hash = None
  
      @property
      def bin(self):
          return self.__gpg
  
      @property
      def common_params(self):
          import copy
          return copy.copy(self.__common_params)
  
      @property
      def password(self):
          return self.__password
  
      @property
      def userid(self):
          return self.__userid
  
      @userid.setter
      def userid(self, val):
          self.__userid = val
  
      @property
      def hash(self):
          return self.__hash
  
      @hash.setter
      def hash(self, val):
          self.__hash = val
  
      @password.setter
      def password(self, val):
          self.__password = val
  
      def copy(self):
          return copy.deepcopy(self)
  
      def _run(self, cmd, params, batch_input = None):
          retcode, _, _ = run_proc(cmd, params, batch_input)
          return retcode == 0
  
      def list_keys(self, secret = False):
          params = ['--list-secret-keys'] if secret else ['--list-keys']
          params = params + self.common_params
          return self._run(self.__gpg, params)
  
      def generate_key_batch(self, batch_input):
          params = ['--gen-key', '--expert', '--batch',
                    '--pinentry-mode', 'loopback'] + self.common_params
          if self.password:
              params += ['--passphrase', self.password]
          if self.hash:
              params += ['--cert-digest-algo', self.hash]
          return self._run(self.__gpg, params, batch_input)
  
      def export_key(self, out_filename, secret=False):
          params = ['--armor']
          if secret:
              params += ['--pinentry-mode', 'loopback', '--export-secret-key']
              params += ['--passphrase', self.password]
          else:
             params = ['--export']
  
          params = self.common_params + \
              params + ['-o', out_filename, self.userid]
          return self._run(self.__gpg, params)
  
      def import_key(self, filename, secret = False):
          params = self.common_params
          if secret:
              params += ['--trust-model', 'always']
              params += ['--batch']
              params += ['--passphrase', self.password]
          params += ['--import', filename]
          return self._run(self.__gpg, params)
  
      def sign(self, out, input):
          params = self.common_params
          params += ['--passphrase', self.password]
          params += ['--batch']
          params += ['--pinentry-mode', 'loopback']
          params += ['-u', self.userid]
          params += ['-o', out]
          params += ['--sign', input]
          if self.hash:
              params += ['--digest-algo', self.hash]
          return self._run(self.__gpg, params)
  
      def verify(self, input):
          params = self.common_params
          params += ['--verify', input]
          if self.hash:
              params += ['--digest-algo', self.hash]
          return self._run(self.__gpg, params)
  
      def encrypt(self, recipient, out, input):
          params = self.common_params
          params += ['--passphrase', self.password]
          params += ['-r', recipient]
          params += ['-o', out]
          # Blindely trust the key without asking
          params += ['--always-trust']
          params += ['--encrypt', input]
          return self._run(self.__gpg, params)
  
      def decrypt(self, out, input):
          params = self.common_params
          params += ['--passphrase', self.password]
          params += ['--pinentry-mode', 'loopback']
          params += ['-o', out]
          params += ['--decrypt', input]
          return self._run(self.__gpg, params)
  