Python Triplesec Save

A Python port of the triplesec library.

Project README


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A Python port of the TripleSec_ library. See also the JS implementation_.

Compatible with Python 2.7 and 3.6+.

.. _TripleSec: .. _implementation:



pip install TripleSec

Note: You may get an OpenSSL error while installing the scrypt dependency on older operating systems. On Ubuntu/Debian, run ::

apt-get install libssl-dev

On OS X, follow the instructions at


Instantiate a triplesec.TripleSec(key=None) object, with or without a key (if omitted it will have to be specified at each use), then use the encrypt(message, key=None) and decrypt(ciphertext, key=None) methods.

All values must be binary strings (str on Python 2, bytes on Python 3)


The (unkeyed) functions ``encrypt`` and ``decrypt`` are exposed at the module level.

Command line tool

TripleSec offers a ``triplesec`` command line tool to encrypt and decrypt messages from the terminal.

Here is the help::

  Command-line TripleSec encryption-decryption tool

  usage: triplesec [-h] [-b | --hex] [-k KEY] {enc|dec} [data]

  positional arguments:
    {enc|dec}          enc: encrypt and sign a message with TripleSec; by
                       default output a hex encoded ciphertext (see -b and
                       --hex) -- dec: decrypt and verify a TripleSec ciphertext
    data               the TripleSec message or ciphertext; if not specified it
                       will be read from stdin; by default ciphertexts will be
                       considered hex encoded (see -b and --hex)

  optional arguments:
    -h, --help         show this help message and exit
    -b, --binary       consider all input (key, plaintext, ciphertext) to be
                       plain binary data and output everything as binary data -
                       this turns off smart decoding/encoding - if you pipe
                       data, you should use this
    --hex              consider all input (key, plaintext, ciphertext) to be hex
                       encoded; hex encode all output
    -k KEY, --key KEY  the TripleSec key; if not specified will check the
                       TRIPLESEC_KEY env variable, then prompt the user for it
    --compatibility    Use Keccak instead of SHA3 for the second MAC and reverse
                       endianness of Salsa20 in version 1. Only effective in
                       versions before 4.

Changes in 0.5
For message authentication, the Triplesec spec uses the Keccak SHA3 proposal function for versions 1 through 3, but for some time, this library used the standardized SHA3-512 function instead. Thus, by default, the Python implementation for versions 1 through 3 is incompatible with the JavaScript and Golang implementations.
From version 4 and going forward, the spec will use only the standardized SHA3-512 function (provided, for example, by `hashlib` in Python), and the Python, JavaScript, and Golang implementations will be compatible.

If you would like to use Keccak with versions 1 through 3 (and thus achieve compatibility with the Node and Go packages), you can pass in `compatibility=True` to `encrypt` and `decrypt`, or on the commandline as detailed in the above section.

Additionally, encryptions that do not specify a version will now use version 4 by default, which is not compatible with previous versions.


>>> import triplesec
>>> x = triplesec.encrypt(b"IT'S A YELLOW SUBMARINE", b'* password *')
>>> print(triplesec.decrypt(x, b'* password *').decode())

>>> from triplesec import TripleSec
>>> T = TripleSec(b'* password *')
>>> x = T.encrypt(b"IT'S A YELLOW SUBMARINE")
>>> print(T.decrypt(x).decode())
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