EncryptedPickle 0.1.4

Example Usage

from encryptedpickle import encryptedpickle

passphrases = {
    0: 'Change me! CHange me! CHAnge me! CHANge me!'
       'CHANGe me! CHANGE ME! CHANGE Me! CHANGE ME!'
}

data = {'example': 123, 'test': 'testing'}

encoder = encryptedpickle.EncryptedPickle(signature_passphrases=passphrases,
                                          encryption_passphrases=passphrases)

print("* data: %s" % data)

sealed = encoder.seal(data)
print("* sealed: %s" % sealed)

unsealed = encoder.unseal(sealed)
print("* unsealed: %s" % unsealed)

Customization Example

from encryptedpickle import encryptedpickle

# You can use different passphrases for signature and encryption
signature_passphrases = {
    0: 'change me! change me! change me! change me!'
       'change me! change me! change me! change me!'
}

encryption_passphrases = {
    0: 'Change me! CHange me! CHAnge me! CHANge me!'
       'CHANGe me! CHANGE ME! CHANGE Me! CHANGE ME!'
}

data = {'example': 123, 'test': 'testing'}

encoder = encryptedpickle.EncryptedPickle(signature_passphrases,
                                          encryption_passphrases)

encryption = {
    # Add new encryption algorithm specification with id = 255.
    # Default algorithms can not be overridden so we must use some other
    # id, maybe best starting with 255 (maximum id) and decreasing by one
    # for next added algorithm.
    255: {
        # Algorithm name defined in EncryptedPickle.ALGORITHMS.
        'algorithm': 'aes-256-cbc',

        # Salt size for PBKDF2 key.
        'salt_size': 32,

        # Digest mode for PBKDF2 key.
        'pbkdf2_algorithm': 'sha256',

        # Use 10 iterations in PBKDF2 key generation.
        'pbkdf2_iterations': 10,
    },
}
encoder.set_algorithms(encryption=encryption)

options = {
    # Use above defined encryption algorithm (id = 255).
    'encryption_algorithm_id': 255,

    # Use "gzip-deflate" (id = 1) algorithm for compression.
    #
    # Be carefull with this option, because compression is applied before
    # encryption and "Crime" attack is possible if third party can modify
    # data that is encrypted. For more info see:
    #
    # https://www.isecpartners.com/news-events/news/2012/september/details-on-the-crime-attack.aspx
    #
    'compression_algorithm_id': 1,

    # Add timestamp to header (unencrypted).
    'flags': {
        'timestamp': True,
    },
}
encoder.set_options(options)

sealed = encoder.seal(data)
print("* sealed: %s" % sealed)

unsealed, unsealed_options = encoder.unseal(sealed, return_options=True)
print("* unsealed: %s" % unsealed)
if unsealed_options['info']['timestamp']:
    print("* timestamp: %d" % unsealed_options['info']['timestamp'])

Copyright and License

EncryptedPickle for Python is Copyright (c) 2013 Vingd, Inc. and licensed under the MIT License.