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RFC7638: JSON Web Key (JWK) Thumbprint
======================================
.. versionadded:: v0.15
.. automodule:: authlib.jose
This RFC7638_ is used for computing a hash value over a JSON Web Key (JWK).
The value can be used as an identity of the JWK.
.. _RFC7638: https://tools.ietf.org/html/rfc7638
The ``.thumbprint`` method is defined on the ``Key`` class, you can use it
directly::
from authlib.jose import JsonWebKey
raw = read_file('rsa.pem')
key = JsonWebKey.import_key(raw)
key.thumbprint()
If a key has no ``kid``, you can add the value of ``.thumbprint()`` as a kid::
key['kid'] = key.thumbprint()
This method is available on every Key class, including :class:`OctKey`,
:class:`RSAKey`, :class:`ECKey`, and :class:`OKPKey`.
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