Default: :func:`cryptography.hazmat.backends.default_backend`
Default: :class:`cryptography.hazmat.primitives.hashes.SHA256`
The digest algorithm to use for signing and key generation.
Default: :obj:`None`
This value should not be used, instead the key will be derived from SECRET_KEY. Due to this depedency please consider whether, and how, the SECRET_KEY might change after encryption has taken place.
Default: 'django-cryptography'
The default can be replaced with a a Cryptography based version.
SIGNING_BACKEND = 'django_cryptography.core.signing.TimestampSigner'