def test_encode_random_bytes(self):
key = encode_random_bytes(num_bytes=16)
self.assertEqual(len(decode_bytes(key)), 16)
key = encode_random_bytes(num_bytes=24)
self.assertEqual(len(decode_bytes(key)), 24)
key = encode_random_bytes(num_bytes=32)
self.assertEqual(len(decode_bytes(key)), 32)
def test_encrypt_mode_gcm(self):
from eventsourcing.utils.cipher.aes import AESCipher
from eventsourcing.utils.random import encode_random_bytes, decode_random_bytes
# Unicode string representing 256 random bits encoded with Base64.
cipher_key = encode_random_bytes(num_bytes=32)
# Construct AES cipher.
cipher = AESCipher(cipher_key=decode_random_bytes(cipher_key))
# Encrypt some plaintext.
ciphertext = cipher.encrypt('plaintext')
self.assertNotEqual(ciphertext, 'plaintext')
# Decrypt some ciphertext.
plaintext = cipher.decrypt(ciphertext)
self.assertEqual(plaintext, 'plaintext')
# Check DataIntegrityError is raised (broken Base64 padding).
with self.assertRaises(DataIntegrityError):
damaged = ciphertext[:-1]
cipher.decrypt(damaged)
# Check DataIntegrityError is raised (MAC check fails).
with self.assertRaises(DataIntegrityError):
damaged = 'a' + ciphertext[:-1]
cipher.decrypt(damaged)
from eventsourcing.application.sqlalchemy import SimpleApplication
from eventsourcing.exceptions import ConcurrencyError
from eventsourcing.application.sqlalchemy import SimpleApplication
from eventsourcing.exceptions import ConcurrencyError
from world import World
from eventsourcing.utils.random import encode_random_bytes
import os
# Keep this safe.
cipher_key = encode_random_bytes(num_bytes=32)
# Optional cipher key (random bytes encoded with Base64).
os.environ['CIPHER_KEY'] = cipher_key
# SQLAlchemy-style database connection string.
os.environ['DB_URI'] = 'sqlite:///:memory:'
# Construct simple application (used here as a context manager).
with SimpleApplication(persist_event_type=World.Event) as app:
# 1. Call library factor method as 'Geekshub' user.
world = World.__create__(ruler='Geekshub')
# 2. Check if the ruler is Geekshub
assert world.ruler == 'Geekshub'
# 3. Change the ruler
world.ruler = 'Lucas'
# 4. Add
def get_application(self):
return SimpleApplication(cipher_key=encode_random_bytes(16))
def get_application(self):
return self.application_class(
cipher_key=encode_random_bytes(16),
persist_event_type=DomainEvent,
)