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Project Description

jot is a Python implementation of the draft [JSON Web Token (JWT)](http://tools.ietf.org/html/draft-jones-json-web-token-07) specification.

It supports signing through the draft [JWS](http://tools.ietf.org/html/draft-jones-json-web-signature-04) specification. Only HMAC SHA-256/384/512 are supported as of yet.

It will eventually support encryption through JWE, following a similar API.

Plaintext JWT

Plaintext JWTs are neither signed nor encrypted and take a JSON-compatible object as the sole argument.

>>> from jot import jwt
>>> msg = jwt.encode({'status': 'ready'})
>>> msg
'eyJhbGciOiJub25lIiwidHlwIjoiSldUIn0.eyJzdGF0dXMiOiJyZWFkeSJ9.'
>>> jwt.decode(msg)
{'headers': {u'alg': u'none', u'typ': u'JWT'}, 'valid': True, 'payload':
{u'status': u'ready'}}

Signed JWT (JWS)

For encoding, you need to provide an object representing your desired algorithm along with a key and, optionally, a key id for the header.

>>> from jot import jwt, jws
>>> msg = jwt.encode({'status': 'ready'}, signer=jws.HmacSha(
bits=256, key='verysecret', key_id='client1'))
>>> msg
'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCIsImtpZCI6ImNsaWVudDEifQ.eyJzdGF0dXM
iOiJyZWFkeSJ9.DcKKQXXUjGP7pape8BgQ3AcQSPH8toWFLY2woIVUZ-w'

To decode and verify, you must pass a signer object for every possible expected algorithm. This may only be one. You can pass a key directly to the signer object if you expect only a particular one:

>>> jwt.decode(msg, signers=[jws.HmacSha(bits=256, key='verysecret')])
{'headers': {u'alg': u'HS256', u'typ': u'JWT', u'kid': u'client1'},
'valid': True, 'payload': {u'status': u'ready'}}

If you expect any of several keys, you can pass a dictionary of key_id -> key mappings. decode() will use the ‘kid’ (key id) header to choose the correct one.

>>> jwt.decode(msg, signers=[jws.HmacSha(bits=256, keydict={'client1':
'verysecret', 'client2': 'evensecreter'})])
{'headers': {u'alg': u'HS256', u'typ': u'JWT', u'kid': u'client1'},
'valid': True, 'payload': {u'status': u'ready'}}

An invalid key, or a key id not being found in the key dictionary, will flip the ‘valid’ attribute to False:

>>> jwt.decode(msg, signers=[jws.HmacSha(bits=256, keydict={'client1':
'notverysecret', 'client2': 'evensecreter'})])
{'headers': {u'alg': u'HS256', u'typ': u'JWT', u'kid': u'client1'},
'valid': False, 'payload': {u'status': u'ready'}}
>>> jwt.decode(msg, signers=[jws.HmacSha(bits=256, keydict={'client10':
'verysecret', 'client2': 'evensecreter'})])
{'headers': {u'alg': u'HS256', u'typ': u'JWT', u'kid': u'client1'},
'valid': False, 'payload': {u'status': u'ready'}}

The headers and payload should not be trusted if valid is False, but they are provided for informational purposes.

Release History

Release History

0.2

This version

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

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0.1

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TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

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Download Files

Download Files

TODO: Brief introduction on what you do with files - including link to relevant help section.

File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
jot-0.2.tar.gz (5.2 kB) Copy SHA256 Checksum SHA256 Source Sep 2, 2014

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