DEG2021

choices_pb2.py

# -*- coding: utf-8 -*-
# Generated by the protocol buffer compiler.  DO NOT EDIT!
# source: choices.proto
"""Generated protocol buffer code."""
from google.protobuf import descriptor as _descriptor
from google.protobuf import message as _message
from google.protobuf import reflection as _reflection
from google.protobuf import symbol_database as _symbol_database
# @@protoc_insertion_point(imports)

_sym_db = _symbol_database.Default()




DESCRIPTOR = _descriptor.FileDescriptor(
  name='choices.proto',
  package='',
  syntax='proto3',
  serialized_options=None,
  create_key=_descriptor._internal_create_key,
  serialized_pb=b'\n\rchoices.proto\"\x17\n\x07\x43hoices\x12\x0c\n\x04\x64\x61ta\x18\x01 \x03(\rb\x06proto3'
)




_CHOICES = _descriptor.Descriptor(
  name='Choices',
  full_name='Choices',
  filename=None,
  file=DESCRIPTOR,
  containing_type=None,
  create_key=_descriptor._internal_create_key,
  fields=[
    _descriptor.FieldDescriptor(
      name='data', full_name='Choices.data', index=0,
      number=1, type=13, cpp_type=3, label=3,
      has_default_value=False, default_value=[],
      message_type=None, enum_type=None, containing_type=None,
      is_extension=False, extension_scope=None,
      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
  ],
  extensions=[
  ],
  nested_types=[],
  enum_types=[
  ],
  serialized_options=None,
  is_extendable=False,
  syntax='proto3',
  extension_ranges=[],
  oneofs=[
  ],
  serialized_start=17,
  serialized_end=40,
)

DESCRIPTOR.message_types_by_name['Choices'] = _CHOICES
_sym_db.RegisterFileDescriptor(DESCRIPTOR)

Choices = _reflection.GeneratedProtocolMessageType('Choices', (_message.Message,), {
  'DESCRIPTOR' : _CHOICES,
  '__module__' : 'choices_pb2'
  # @@protoc_insertion_point(class_scope:Choices)
  })
_sym_db.RegisterMessage(Choices)


# @@protoc_insertion_point(module_scope)

decode.py

import psycopg2
import psycopg2.extras

import json
import six

import nacl.utils
from nacl.public import PrivateKey, PublicKey, Box

from choices_pb2 import Choices

# XXX: enc = {...}

skey = PrivateKey(bytes.fromhex("54e3cf70f712b2ff727bde3849772fa811a9d5de796aa7d788d205aa86af04ad"))
pkey = PublicKey(bytes.fromhex(enc['public_key']))
box = Box(skey, pkey)
pb = box.decrypt(bytes.fromhex(enc['encrypted_message']), bytes.fromhex(enc['nonce']))
offset = int.from_bytes(pb[:2], 'big')+2
choices = Choices().FromString(pb[offset:])
print(choices.data)

zBatchDecrypt.ipynb