Bearer token decoder
Bearer token decoder for Python (>= 2.7 and 3).
pip install xiongxiong
The class must be instantiated with the private key and, optionally, the hashing algorithm (defaults to sha1).
from xiongxiong import Xiongxiong xiongxiong = Xiongxiong(privateKey, 'md5')
n.b., An exception will be thrown if the specified hashing algorithm is not supported. If you are using Python greater than 2.7.9 or 3.2, you will have access to all the algorithms supported by your platform’s instance of OpenSSL; otherwise you are limited to MD5, SHA1, SHA224, SHA256, SHA384 and SHA512.
Obviously, the private key and hashing algorithm must match those used by a token’s encoder in order to successfully decode it.
An instantiation of the Xiongxiong class is callable and will decode the seed data, expiration and validate from the bearer token/basic authentication pair, returning a Token object (see below).
The decoded Token is built, called by the above function, in such a way that its properties are read-only. (The factory function shouldn’t be invoked directly and has been designed to be a private module function, insofar as Python allows.) It nonetheless has the following members:
- .data The original seed data, which will be split into a list by : characters, wherever possible (a string, otherwise).
- .expiration The expiration time (datetime.datetime)
- .valid The validity of the token/basic pair (Boolean).
For example, continuing from the above:
from datetime import datetime tokenData = xiongxiong(someBearerToken) if tokenData.valid: expiresIn = tokenData.expiration - datetime.now() print('Token expires in %d seconds.' % expiresIn.seconds) print('Contents: %s' % tokenData.data)
The validity property (valid) will return false if the token can’t be authenticated, otherwise it will test whether the token has passed its best before date.
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