2D-Doc parser library

This is a 2D-Doc parser library. It is able to decode and pretty-print a 2D-Doc as defined by French ANTS, and is also able to verify signature.

Usage

Dumper

There is a built-in dumper tool that can be called through command line with:

$ python3 -m tdd.dump --test-ca tests/spec_samples/3.1.3/15.2.2/17.txt
tests/spec_samples/3.1.3/15.2.2/17.txt:
Version: 3
Country: FR
CA: FR00
Cert: 0001
Emit date: 2179-06-06
Sign date: 2017-06-18
Emitter doc type: Carte T3P
User doc type: Justificatif d'activité
Identifiants de données relatives aux véhicules
  Numéro de la carte: 12345678901
  Date d’expiration initiale: 2019-11-30
Sign: a06b0fb1979c3a526d797a019c78f969a09d9973553d3e353d79a4a29041a4100792ccce10821f328046a36a024a2f47366c2df0cc627344d2070aa987c8e047
Signature OK

API

A basic parsing sessions boils down to:

>>> from tdd.doc import TwoDDoc
>>> c = TwoDDoc.from_code(open('tests/spec_samples/3.1.3/15.2.2/17.txt', 'r').read().strip())
>>> c.header.doc_type().user_type
"Justificatif d'activité"
>>> c.header.doc_type().emitter_type
'Carte T3P'
>>> c.message.dataset
[<tdd.message.FixedData object at 0x10ab320a0>, <tdd.message.FixedData object at 0x10ab32310>]
>>> c.message.dataset[0].definition.name
'Numéro de la carte'
>>> c.message.dataset[0].value
'12345678901'
>>> from tdd.keychain import internal
>>> chain = internal()
>>> c.header.ca_id
'FR00'
>>> c.header.cert_id
'0001'
>>> c.signature_is_valid(chain)
True

Certificate Chains

The library ships with bundled certificate chains from the French ANTS Trust Service List (TSL). These are loaded automatically by keychain.internal(). Test CA "FR00" is not loaded automatically unless explicitly asked for.

To download additional or updated chains, install the fetch extras and run:

$ pip install tdd[fetch]
$ python -m tdd.fetch_chains

This downloads chains to ~/.config/tdd/chains/, which are automatically loaded after the bundled ones.

To update the bundled chains shipped with the package (for maintainers):

$ python setup.py fetch_chains

TODO

• Documentation
  • Full API documentation, better pydoc strings.
• Support for "binary" V4 messages
  • And support for V4 ancillary data

License

MIT.